Merge tag 'powerpc-5.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:
 "This is a bit late, partly due to me travelling, and partly due to a
  power outage knocking out some of my test systems *while* I was
  travelling.

   - Initial support for running on a system with an Ultravisor, which
     is software that runs below the hypervisor and protects guests
     against some attacks by the hypervisor.

   - Support for building the kernel to run as a "Secure Virtual
     Machine", ie. as a guest capable of running on a system with an
     Ultravisor.

   - Some changes to our DMA code on bare metal, to allow devices with
     medium sized DMA masks (> 32 && < 59 bits) to use more than 2GB of
     DMA space.

   - Support for firmware assisted crash dumps on bare metal (powernv).

   - Two series fixing bugs in and refactoring our PCI EEH code.

   - A large series refactoring our exception entry code to use gas
     macros, both to make it more readable and also enable some future
     optimisations.

  As well as many cleanups and other minor features & fixups.

  Thanks to: Adam Zerella, Alexey Kardashevskiy, Alistair Popple, Andrew
  Donnellan, Aneesh Kumar K.V, Anju T Sudhakar, Anshuman Khandual,
  Balbir Singh, Benjamin Herrenschmidt, Cédric Le Goater, Christophe
  JAILLET, Christophe Leroy, Christopher M. Riedl, Christoph Hellwig,
  Claudio Carvalho, Daniel Axtens, David Gibson, David Hildenbrand,
  Desnes A. Nunes do Rosario, Ganesh Goudar, Gautham R. Shenoy, Greg
  Kurz, Guerney Hunt, Gustavo Romero, Halil Pasic, Hari Bathini, Joakim
  Tjernlund, Jonathan Neuschafer, Jordan Niethe, Leonardo Bras, Lianbo
  Jiang, Madhavan Srinivasan, Mahesh Salgaonkar, Mahesh Salgaonkar,
  Masahiro Yamada, Maxiwell S. Garcia, Michael Anderson, Nathan
  Chancellor, Nathan Lynch, Naveen N. Rao, Nicholas Piggin, Oliver
  O'Halloran, Qian Cai, Ram Pai, Ravi Bangoria, Reza Arbab, Ryan Grimm,
  Sam Bobroff, Santosh Sivaraj, Segher Boessenkool, Sukadev Bhattiprolu,
  Thiago Bauermann, Thiago Jung Bauermann, Thomas Gleixner, Tom
  Lendacky, Vasant Hegde"

* tag 'powerpc-5.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (264 commits)
  powerpc/mm/mce: Keep irqs disabled during lockless page table walk
  powerpc: Use ftrace_graph_ret_addr() when unwinding
  powerpc/ftrace: Enable HAVE_FUNCTION_GRAPH_RET_ADDR_PTR
  ftrace: Look up the address of return_to_handler() using helpers
  powerpc: dump kernel log before carrying out fadump or kdump
  docs: powerpc: Add missing documentation reference
  powerpc/xmon: Fix output of XIVE IPI
  powerpc/xmon: Improve output of XIVE interrupts
  powerpc/mm/radix: remove useless kernel messages
  powerpc/fadump: support holes in kernel boot memory area
  powerpc/fadump: remove RMA_START and RMA_END macros
  powerpc/fadump: update documentation about option to release opalcore
  powerpc/fadump: consider f/w load area
  powerpc/opalcore: provide an option to invalidate /sys/firmware/opal/core file
  powerpc/opalcore: export /sys/firmware/opal/core for analysing opal crashes
  powerpc/fadump: update documentation about CONFIG_PRESERVE_FA_DUMP
  powerpc/fadump: add support to preserve crash data on FADUMP disabled kernel
  powerpc/fadump: improve how crashed kernel's memory is reserved
  powerpc/fadump: consider reserved ranges while releasing memory
  powerpc/fadump: make crash memory ranges array allocation generic
  ...

55 files changed, 718 insertions, 634 deletions

diff --git a/arch/powerpc/include/asm/asm-prototypes.h b/arch/powerpc/include/asm/asm-prototypes.h
index ec1c97a8e8cb..8561498e653c 100644
--- a/arch/powerpc/include/asm/asm-prototypes.h
+++ b/arch/powerpc/include/asm/asm-prototypes.h
@@ -15,6 +15,7 @@
 #include <asm/epapr_hcalls.h>
 #include <asm/dcr.h>
 #include <asm/mmu_context.h>
+#include <asm/ultravisor-api.h>
 
 #include <uapi/asm/ucontext.h>
 
@@ -34,6 +35,16 @@ extern struct static_key hcall_tracepoint_key;
 void __trace_hcall_entry(unsigned long opcode, unsigned long *args);
 void __trace_hcall_exit(long opcode, long retval, unsigned long *retbuf);
 
+/* Ultravisor */
+#if defined(CONFIG_PPC_POWERNV) || defined(CONFIG_PPC_SVM)
+long ucall_norets(unsigned long opcode, ...);
+#else
+static inline long ucall_norets(unsigned long opcode, ...)
+{
+	return U_NOT_AVAILABLE;
+}
+#endif
+
 /* OPAL */
 int64_t __opal_call(int64_t a0, int64_t a1, int64_t a2, int64_t a3,
 		    int64_t a4, int64_t a5, int64_t a6, int64_t a7,
@@ -123,7 +134,8 @@ extern int __ucmpdi2(u64, u64);
 
 /* tracing */
 void _mcount(void);
-unsigned long prepare_ftrace_return(unsigned long parent, unsigned long ip);
+unsigned long prepare_ftrace_return(unsigned long parent, unsigned long ip,
+						unsigned long sp);
 
 void pnv_power9_force_smt4_catch(void);
 void pnv_power9_force_smt4_release(void);
diff --git a/arch/powerpc/include/asm/book3s/32/pgtable.h b/arch/powerpc/include/asm/book3s/32/pgtable.h
index 838de59f6754..0796533d37dd 100644
--- a/arch/powerpc/include/asm/book3s/32/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/32/pgtable.h
@@ -148,23 +148,21 @@ int map_kernel_page(unsigned long va, phys_addr_t pa, pgprot_t prot);
  */
 #include <asm/fixmap.h>
 
-#ifdef CONFIG_HIGHMEM
-#define KVIRT_TOP	PKMAP_BASE
-#else
-#define KVIRT_TOP	FIXADDR_START
-#endif
-
 /*
  * ioremap_bot starts at that address. Early ioremaps move down from there,
  * until mem_init() at which point this becomes the top of the vmalloc
  * and ioremap space
  */
-#ifdef CONFIG_NOT_COHERENT_CACHE
-#define IOREMAP_TOP	((KVIRT_TOP - CONFIG_CONSISTENT_SIZE) & PAGE_MASK)
+#ifdef CONFIG_HIGHMEM
+#define IOREMAP_TOP	PKMAP_BASE
 #else
-#define IOREMAP_TOP	KVIRT_TOP
+#define IOREMAP_TOP	FIXADDR_START
 #endif
 
+/* PPC32 shares vmalloc area with ioremap */
+#define IOREMAP_START	VMALLOC_START
+#define IOREMAP_END	VMALLOC_END
+
 /*
  * Just any arbitrary offset to the start of the vmalloc VM area: the
  * current 16MB value just means that there will be a 64MB "hole" after the
@@ -201,8 +199,6 @@ int map_kernel_page(unsigned long va, phys_addr_t pa, pgprot_t prot);
 #include <linux/sched.h>
 #include <linux/threads.h>
 
-extern unsigned long ioremap_bot;
-
 /* Bits to mask out from a PGD to get to the PUD page */
 #define PGD_MASKED_BITS		0
 
diff --git a/arch/powerpc/include/asm/book3s/64/mmu.h b/arch/powerpc/include/asm/book3s/64/mmu.h
index 23b83d3593e2..bb3deb76c951 100644
--- a/arch/powerpc/include/asm/book3s/64/mmu.h
+++ b/arch/powerpc/include/asm/book3s/64/mmu.h
@@ -206,7 +206,6 @@ extern int mmu_io_psize;
 void mmu_early_init_devtree(void);
 void hash__early_init_devtree(void);
 void radix__early_init_devtree(void);
-extern void radix_init_native(void);
 extern void hash__early_init_mmu(void);
 extern void radix__early_init_mmu(void);
 static inline void early_init_mmu(void)
@@ -238,9 +237,6 @@ static inline void setup_initial_memory_limit(phys_addr_t first_memblock_base,
 					   first_memblock_size);
 }
 
-extern int (*register_process_table)(unsigned long base, unsigned long page_size,
-				     unsigned long tbl_size);
-
 #ifdef CONFIG_PPC_PSERIES
 extern void radix_init_pseries(void);
 #else
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h
index 8308f32e9782..b01624e5c467 100644
--- a/arch/powerpc/include/asm/book3s/64/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/64/pgtable.h
@@ -289,7 +289,6 @@ extern unsigned long __kernel_io_end;
 #define KERN_IO_END __kernel_io_end
 
 extern struct page *vmemmap;
-extern unsigned long ioremap_bot;
 extern unsigned long pci_io_base;
 #endif /* __ASSEMBLY__ */
 
@@ -317,6 +316,7 @@ extern unsigned long pci_io_base;
 #define  PHB_IO_BASE	(ISA_IO_END)
 #define  PHB_IO_END	(KERN_IO_START + FULL_IO_SIZE)
 #define IOREMAP_BASE	(PHB_IO_END)
+#define IOREMAP_START	(ioremap_bot)
 #define IOREMAP_END	(KERN_IO_END)
 
 /* Advertise special mapping type for AGP */
@@ -608,8 +608,10 @@ static inline bool pte_access_permitted(pte_t pte, bool write)
  */
 static inline pte_t pfn_pte(unsigned long pfn, pgprot_t pgprot)
 {
-	return __pte((((pte_basic_t)(pfn) << PAGE_SHIFT) & PTE_RPN_MASK) |
-		     pgprot_val(pgprot));
+	VM_BUG_ON(pfn >> (64 - PAGE_SHIFT));
+	VM_BUG_ON((pfn << PAGE_SHIFT) & ~PTE_RPN_MASK);
+
+	return __pte(((pte_basic_t)pfn << PAGE_SHIFT) | pgprot_val(pgprot));
 }
 
 static inline unsigned long pte_pfn(pte_t pte)
diff --git a/arch/powerpc/include/asm/book3s/64/radix.h b/arch/powerpc/include/asm/book3s/64/radix.h
index e04a839cb5b9..574eca33f893 100644
--- a/arch/powerpc/include/asm/book3s/64/radix.h
+++ b/arch/powerpc/include/asm/book3s/64/radix.h
@@ -266,9 +266,6 @@ extern void radix__vmemmap_remove_mapping(unsigned long start,
 extern int radix__map_kernel_page(unsigned long ea, unsigned long pa,
 				 pgprot_t flags, unsigned int psz);
 
-extern int radix__ioremap_range(unsigned long ea, phys_addr_t pa,
-				unsigned long size, pgprot_t prot, int nid);
-
 static inline unsigned long radix__get_tree_size(void)
 {
 	unsigned long rts_field;
diff --git a/arch/powerpc/include/asm/book3s/64/tlbflush-radix.h b/arch/powerpc/include/asm/book3s/64/tlbflush-radix.h
index 05147cecb8df..4ce795d30377 100644
--- a/arch/powerpc/include/asm/book3s/64/tlbflush-radix.h
+++ b/arch/powerpc/include/asm/book3s/64/tlbflush-radix.h
@@ -17,8 +17,8 @@ extern void radix__flush_tlb_lpid_page(unsigned int lpid,
 					unsigned long addr,
 					unsigned long page_size);
 extern void radix__flush_pwc_lpid(unsigned int lpid);
-extern void radix__flush_tlb_lpid(unsigned int lpid);
-extern void radix__local_flush_tlb_lpid_guest(unsigned int lpid);
+extern void radix__flush_all_lpid(unsigned int lpid);
+extern void radix__flush_all_lpid_guest(unsigned int lpid);
 #else
 static inline void radix__tlbiel_all(unsigned int action) { WARN_ON(1); };
 static inline void radix__flush_tlb_lpid_page(unsigned int lpid,
@@ -31,11 +31,7 @@ static inline void radix__flush_pwc_lpid(unsigned int lpid)
 {
 	WARN_ON(1);
 }
-static inline void radix__flush_tlb_lpid(unsigned int lpid)
-{
-	WARN_ON(1);
-}
-static inline void radix__local_flush_tlb_lpid_guest(unsigned int lpid)
+static inline void radix__flush_all_lpid(unsigned int lpid)
 {
 	WARN_ON(1);
 }
@@ -73,6 +69,4 @@ extern void radix__flush_tlb_pwc(struct mmu_gather *tlb, unsigned long addr);
 extern void radix__flush_tlb_collapsed_pmd(struct mm_struct *mm, unsigned long addr);
 extern void radix__flush_tlb_all(void);
 
-extern void radix__local_flush_tlb_lpid(unsigned int lpid);
-
 #endif
diff --git a/arch/powerpc/include/asm/book3s/64/tlbflush.h b/arch/powerpc/include/asm/book3s/64/tlbflush.h
index ebf572ea621e..7aa8195b6cff 100644
--- a/arch/powerpc/include/asm/book3s/64/tlbflush.h
+++ b/arch/powerpc/include/asm/book3s/64/tlbflush.h
@@ -162,4 +162,13 @@ static inline void flush_tlb_pgtable(struct mmu_gather *tlb, unsigned long addre
 
 	radix__flush_tlb_pwc(tlb, address);
 }
+
+extern bool tlbie_capable;
+extern bool tlbie_enabled;
+
+static inline bool cputlb_use_tlbie(void)
+{
+	return tlbie_enabled;
+}
+
 #endif /*  _ASM_POWERPC_BOOK3S_64_TLBFLUSH_H */
diff --git a/arch/powerpc/include/asm/book3s/pgtable.h b/arch/powerpc/include/asm/book3s/pgtable.h
index 6436b65ac7bc..0e1263455d73 100644
--- a/arch/powerpc/include/asm/book3s/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/pgtable.h
@@ -26,5 +26,16 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
 				     unsigned long size, pgprot_t vma_prot);
 #define __HAVE_PHYS_MEM_ACCESS_PROT
 
+/*
+ * This gets called at the end of handling a page fault, when
+ * the kernel has put a new PTE into the page table for the process.
+ * We use it to ensure coherency between the i-cache and d-cache
+ * for the page which has just been mapped in.
+ * On machines which use an MMU hash table, we use this to put a
+ * corresponding HPTE into the hash table ahead of time, instead of
+ * waiting for the inevitable extra hash-table miss exception.
+ */
+void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *ptep);
+
 #endif /* __ASSEMBLY__ */
 #endif
diff --git a/arch/powerpc/include/asm/bug.h b/arch/powerpc/include/asm/bug.h
index fed7e6241349..f47e6ff6554d 100644
--- a/arch/powerpc/include/asm/bug.h
+++ b/arch/powerpc/include/asm/bug.h
@@ -5,14 +5,6 @@
 
 #include <asm/asm-compat.h>
 
-/*
- * Define an illegal instr to trap on the bug.
- * We don't use 0 because that marks the end of a function
- * in the ELF ABI.  That's "Boo Boo" in case you wonder...
- */
-#define BUG_OPCODE .long 0x00b00b00  /* For asm */
-#define BUG_ILLEGAL_INSTR "0x00b00b00" /* For BUG macro */
-
 #ifdef CONFIG_BUG
 
 #ifdef __ASSEMBLY__
diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h
index d05f0c28e515..a1ebcbc3931f 100644
--- a/arch/powerpc/include/asm/cputable.h
+++ b/arch/powerpc/include/asm/cputable.h
@@ -145,12 +145,10 @@ static inline void cpu_feature_keys_init(void) { }
 
 /* Definitions for features that only exist on 32-bit chips */
 #ifdef CONFIG_PPC32
-#define CPU_FTR_601			ASM_CONST(0x00001000)
 #define CPU_FTR_L2CR			ASM_CONST(0x00002000)
 #define CPU_FTR_SPEC7450		ASM_CONST(0x00004000)
 #define CPU_FTR_TAU			ASM_CONST(0x00008000)
 #define CPU_FTR_CAN_DOZE		ASM_CONST(0x00010000)
-#define CPU_FTR_USE_RTC			ASM_CONST(0x00020000)
 #define CPU_FTR_L3CR			ASM_CONST(0x00040000)
 #define CPU_FTR_L3_DISABLE_NAP		ASM_CONST(0x00080000)
 #define CPU_FTR_NAP_DISABLE_L2_PR	ASM_CONST(0x00100000)
@@ -160,14 +158,12 @@ static inline void cpu_feature_keys_init(void) { }
 #define CPU_FTR_NEED_COHERENT		ASM_CONST(0x01000000)
 #define CPU_FTR_NO_BTIC			ASM_CONST(0x02000000)
 #define CPU_FTR_PPC_LE			ASM_CONST(0x04000000)
-#define CPU_FTR_UNIFIED_ID_CACHE	ASM_CONST(0x08000000)
 #define CPU_FTR_SPE			ASM_CONST(0x10000000)
 #define CPU_FTR_NEED_PAIRED_STWCX	ASM_CONST(0x20000000)
 #define CPU_FTR_INDEXED_DCR		ASM_CONST(0x40000000)
 
 #else	/* CONFIG_PPC32 */
 /* Define these to 0 for the sake of tests in common code */
-#define CPU_FTR_601			(0)
 #define CPU_FTR_PPC_LE			(0)
 #endif
 
@@ -294,8 +290,8 @@ static inline void cpu_feature_keys_init(void) { }
 #define CPU_FTR_MAYBE_CAN_NAP	0
 #endif
 
-#define CPU_FTRS_PPC601	(CPU_FTR_COMMON | CPU_FTR_601 | \
-	CPU_FTR_COHERENT_ICACHE | CPU_FTR_UNIFIED_ID_CACHE | CPU_FTR_USE_RTC)
+#define CPU_FTRS_PPC601	(CPU_FTR_COMMON | \
+	CPU_FTR_COHERENT_ICACHE)
 #define CPU_FTRS_603	(CPU_FTR_COMMON | CPU_FTR_MAYBE_CAN_DOZE | \
 	    CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_PPC_LE | CPU_FTR_NOEXECUTE)
 #define CPU_FTRS_604	(CPU_FTR_COMMON | CPU_FTR_PPC_LE)
@@ -386,7 +382,7 @@ static inline void cpu_feature_keys_init(void) { }
 #define CPU_FTRS_47X	(CPU_FTRS_440x6)
 #define CPU_FTRS_E200	(CPU_FTR_SPE_COMP | \
 	    CPU_FTR_NODSISRALIGN | CPU_FTR_COHERENT_ICACHE | \
-	    CPU_FTR_UNIFIED_ID_CACHE | CPU_FTR_NOEXECUTE | \
+	    CPU_FTR_NOEXECUTE | \
 	    CPU_FTR_DEBUG_LVL_EXC)
 #define CPU_FTRS_E500	(CPU_FTR_MAYBE_CAN_DOZE | \
 	    CPU_FTR_SPE_COMP | CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_NODSISRALIGN | \
@@ -498,7 +494,9 @@ static inline void cpu_feature_keys_init(void) { }
 #else
 enum {
 	CPU_FTRS_POSSIBLE =
-#ifdef CONFIG_PPC_BOOK3S_32
+#ifdef CONFIG_PPC_BOOK3S_601
+	    CPU_FTRS_PPC601 |
+#elif defined(CONFIG_PPC_BOOK3S_32)
 	    CPU_FTRS_PPC601 | CPU_FTRS_603 | CPU_FTRS_604 | CPU_FTRS_740_NOTAU |
 	    CPU_FTRS_740 | CPU_FTRS_750 | CPU_FTRS_750FX1 |
 	    CPU_FTRS_750FX2 | CPU_FTRS_750FX | CPU_FTRS_750GX |
@@ -574,8 +572,10 @@ enum {
 #else
 enum {
 	CPU_FTRS_ALWAYS =
-#ifdef CONFIG_PPC_BOOK3S_32
-	    CPU_FTRS_PPC601 & CPU_FTRS_603 & CPU_FTRS_604 & CPU_FTRS_740_NOTAU &
+#ifdef CONFIG_PPC_BOOK3S_601
+	    CPU_FTRS_PPC601 &
+#elif defined(CONFIG_PPC_BOOK3S_32)
+	    CPU_FTRS_603 & CPU_FTRS_604 & CPU_FTRS_740_NOTAU &
 	    CPU_FTRS_740 & CPU_FTRS_750 & CPU_FTRS_750FX1 &
 	    CPU_FTRS_750FX2 & CPU_FTRS_750FX & CPU_FTRS_750GX &
 	    CPU_FTRS_7400_NOTAU & CPU_FTRS_7400 & CPU_FTRS_7450_20 &
diff --git a/arch/powerpc/include/asm/current.h b/arch/powerpc/include/asm/current.h
index 297827b76169..bbfb94800415 100644
--- a/arch/powerpc/include/asm/current.h
+++ b/arch/powerpc/include/asm/current.h
@@ -16,7 +16,8 @@ static inline struct task_struct *get_current(void)
 {
 	struct task_struct *task;
 
-	__asm__ __volatile__("ld %0,%1(13)"
+	/* get_current can be cached by the compiler, so no volatile */
+	asm ("ld %0,%1(13)"
 	: "=r" (task)
 	: "i" (offsetof(struct paca_struct, __current)));
 
diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h
index 8aa7c76c2130..6f9b2a12540a 100644
--- a/arch/powerpc/include/asm/eeh.h
+++ b/arch/powerpc/include/asm/eeh.h
@@ -88,6 +88,19 @@ struct eeh_pe {
 	struct list_head child_list;	/* List of PEs below this PE	*/
 	struct list_head child;		/* Memb. child_list/eeh_phb_pe	*/
 	struct list_head edevs;		/* List of eeh_dev in this PE	*/
+
+#ifdef CONFIG_STACKTRACE
+	/*
+	 * Saved stack trace. When we find a PE freeze in eeh_dev_check_failure
+	 * the stack trace is saved here so we can print it in the recovery
+	 * thread if it turns out to due to a real problem rather than
+	 * a hot-remove.
+	 *
+	 * A max of 64 entries might be overkill, but it also might not be.
+	 */
+	unsigned long stack_trace[64];
+	int trace_entries;
+#endif /* CONFIG_STACKTRACE */
 };
 
 #define eeh_pe_for_each_dev(pe, edev, tmp) \
@@ -121,6 +134,8 @@ static inline bool eeh_pe_passed(struct eeh_pe *pe)
 struct eeh_dev {
 	int mode;			/* EEH mode			*/
 	int class_code;			/* Class code of the device	*/
+	int bdfn;			/* bdfn of device (for cfg ops) */
+	struct pci_controller *controller;
 	int pe_config_addr;		/* PE config address		*/
 	u32 config_space[16];		/* Saved PCI config space	*/
 	int pcix_cap;			/* Saved PCIx capability	*/
@@ -136,6 +151,17 @@ struct eeh_dev {
 	struct pci_dev *physfn;		/* Associated SRIOV PF		*/
 };
 
+/* "fmt" must be a simple literal string */
+#define EEH_EDEV_PRINT(level, edev, fmt, ...) \
+	pr_##level("PCI %04x:%02x:%02x.%x#%04x: EEH: " fmt, \
+	(edev)->controller->global_number, PCI_BUSNO((edev)->bdfn), \
+	PCI_SLOT((edev)->bdfn), PCI_FUNC((edev)->bdfn), \
+	((edev)->pe ? (edev)->pe_config_addr : 0xffff), ##__VA_ARGS__)
+#define eeh_edev_dbg(edev, fmt, ...) EEH_EDEV_PRINT(debug, (edev), fmt, ##__VA_ARGS__)
+#define eeh_edev_info(edev, fmt, ...) EEH_EDEV_PRINT(info, (edev), fmt, ##__VA_ARGS__)
+#define eeh_edev_warn(edev, fmt, ...) EEH_EDEV_PRINT(warn, (edev), fmt, ##__VA_ARGS__)
+#define eeh_edev_err(edev, fmt, ...) EEH_EDEV_PRINT(err, (edev), fmt, ##__VA_ARGS__)
+
 static inline struct pci_dn *eeh_dev_to_pdn(struct eeh_dev *edev)
 {
 	return edev ? edev->pdn : NULL;
@@ -247,7 +273,7 @@ static inline bool eeh_state_active(int state)
 	== (EEH_STATE_MMIO_ACTIVE | EEH_STATE_DMA_ACTIVE);
 }
 
-typedef void *(*eeh_edev_traverse_func)(struct eeh_dev *edev, void *flag);
+typedef void (*eeh_edev_traverse_func)(struct eeh_dev *edev, void *flag);
 typedef void *(*eeh_pe_traverse_func)(struct eeh_pe *pe, void *flag);
 void eeh_set_pe_aux_size(int size);
 int eeh_phb_pe_create(struct pci_controller *phb);
@@ -261,20 +287,20 @@ int eeh_rmv_from_parent_pe(struct eeh_dev *edev);
 void eeh_pe_update_time_stamp(struct eeh_pe *pe);
 void *eeh_pe_traverse(struct eeh_pe *root,
 		      eeh_pe_traverse_func fn, void *flag);
-void *eeh_pe_dev_traverse(struct eeh_pe *root,
-			  eeh_edev_traverse_func fn, void *flag);
+void eeh_pe_dev_traverse(struct eeh_pe *root,
+			 eeh_edev_traverse_func fn, void *flag);
 void eeh_pe_restore_bars(struct eeh_pe *pe);
 const char *eeh_pe_loc_get(struct eeh_pe *pe);
 struct pci_bus *eeh_pe_bus_get(struct eeh_pe *pe);
 
 struct eeh_dev *eeh_dev_init(struct pci_dn *pdn);
 void eeh_dev_phb_init_dynamic(struct pci_controller *phb);
-void eeh_probe_devices(void);
+void eeh_show_enabled(void);
 int __init eeh_ops_register(struct eeh_ops *ops);
 int __exit eeh_ops_unregister(const char *name);
 int eeh_check_failure(const volatile void __iomem *token);
 int eeh_dev_check_failure(struct eeh_dev *edev);
-void eeh_addr_cache_build(void);
+void eeh_addr_cache_init(void);
 void eeh_add_device_early(struct pci_dn *);
 void eeh_add_device_tree_early(struct pci_dn *);
 void eeh_add_device_late(struct pci_dev *);
@@ -316,7 +342,7 @@ static inline bool eeh_enabled(void)
         return false;
 }
 
-static inline void eeh_probe_devices(void) { }
+static inline void eeh_show_enabled(void) { }
 
 static inline void *eeh_dev_init(struct pci_dn *pdn, void *data)
 {
@@ -332,7 +358,7 @@ static inline int eeh_check_failure(const volatile void __iomem *token)
 
 #define eeh_dev_check_failure(x) (0)
 
-static inline void eeh_addr_cache_build(void) { }
+static inline void eeh_addr_cache_init(void) { }
 
 static inline void eeh_add_device_early(struct pci_dn *pdn) { }
 
diff --git a/arch/powerpc/include/asm/elfnote.h b/arch/powerpc/include/asm/elfnote.h
new file mode 100644
index 000000000000..a201b6e9ae44
--- /dev/null
+++ b/arch/powerpc/include/asm/elfnote.h
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * PowerPC ELF notes.
+ *
+ * Copyright 2019, IBM Corporation
+ */
+
+#ifndef __ASM_POWERPC_ELFNOTE_H__
+#define __ASM_POWERPC_ELFNOTE_H__
+
+/*
+ * These note types should live in a SHT_NOTE segment and have
+ * "PowerPC" in the name field.
+ */
+
+/*
+ * The capabilities supported/required by this kernel (bitmap).
+ *
+ * This type uses a bitmap as "desc" field. Each bit is described
+ * in arch/powerpc/kernel/note.S
+ */
+#define PPC_ELFNOTE_CAPABILITIES 1
+
+#endif /* __ASM_POWERPC_ELFNOTE_H__ */
diff --git a/arch/powerpc/include/asm/fadump-internal.h b/arch/powerpc/include/asm/fadump-internal.h
new file mode 100644
index 000000000000..c814a2b55389
--- /dev/null
+++ b/arch/powerpc/include/asm/fadump-internal.h
@@ -0,0 +1,169 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Firmware-Assisted Dump internal code.
+ *
+ * Copyright 2011, Mahesh Salgaonkar, IBM Corporation.
+ * Copyright 2019, Hari Bathini, IBM Corporation.
+ */
+
+#ifndef _ASM_POWERPC_FADUMP_INTERNAL_H
+#define _ASM_POWERPC_FADUMP_INTERNAL_H
+
+/* Maximum number of memory regions kernel supports */
+#define FADUMP_MAX_MEM_REGS			128
+
+#ifndef CONFIG_PRESERVE_FA_DUMP
+
+/* The upper limit percentage for user specified boot memory size (25%) */
+#define MAX_BOOT_MEM_RATIO			4
+
+#define memblock_num_regions(memblock_type)	(memblock.memblock_type.cnt)
+
+/* Alignment per CMA requirement. */
+#define FADUMP_CMA_ALIGNMENT	(PAGE_SIZE <<				\
+				 max_t(unsigned long, MAX_ORDER - 1,	\
+				 pageblock_order))
+
+/* FAD commands */
+#define FADUMP_REGISTER			1
+#define FADUMP_UNREGISTER		2
+#define FADUMP_INVALIDATE		3
+
+/*
+ * Copy the ascii values for first 8 characters from a string into u64
+ * variable at their respective indexes.
+ * e.g.
+ *  The string "FADMPINF" will be converted into 0x4641444d50494e46
+ */
+static inline u64 fadump_str_to_u64(const char *str)
+{
+	u64 val = 0;
+	int i;
+
+	for (i = 0; i < sizeof(val); i++)
+		val = (*str) ? (val << 8) | *str++ : val << 8;
+	return val;
+}
+
+#define FADUMP_CPU_UNKNOWN		(~((u32)0))
+
+#define FADUMP_CRASH_INFO_MAGIC		fadump_str_to_u64("FADMPINF")
+
+/* fadump crash info structure */
+struct fadump_crash_info_header {
+	u64		magic_number;
+	u64		elfcorehdr_addr;
+	u32		crashing_cpu;
+	struct pt_regs	regs;
+	struct cpumask	online_mask;
+};
+
+struct fadump_memory_range {
+	u64	base;
+	u64	size;
+};
+
+/* fadump memory ranges info */
+struct fadump_mrange_info {
+	char				name[16];
+	struct fadump_memory_range	*mem_ranges;
+	u32				mem_ranges_sz;
+	u32				mem_range_cnt;
+	u32				max_mem_ranges;
+};
+
+/* Platform specific callback functions */
+struct fadump_ops;
+
+/* Firmware-assisted dump configuration details. */
+struct fw_dump {
+	unsigned long	reserve_dump_area_start;
+	unsigned long	reserve_dump_area_size;
+	/* cmd line option during boot */
+	unsigned long	reserve_bootvar;
+
+	unsigned long	cpu_state_data_size;
+	u64		cpu_state_dest_vaddr;
+	u32		cpu_state_data_version;
+	u32		cpu_state_entry_size;
+
+	unsigned long	hpte_region_size;
+
+	unsigned long	boot_memory_size;
+	u64		boot_mem_dest_addr;
+	u64		boot_mem_addr[FADUMP_MAX_MEM_REGS];
+	u64		boot_mem_sz[FADUMP_MAX_MEM_REGS];
+	u64		boot_mem_top;
+	u64		boot_mem_regs_cnt;
+
+	unsigned long	fadumphdr_addr;
+	unsigned long	cpu_notes_buf_vaddr;
+	unsigned long	cpu_notes_buf_size;
+
+	/*
+	 * Maximum size supported by firmware to copy from source to
+	 * destination address per entry.
+	 */
+	u64		max_copy_size;
+	u64		kernel_metadata;
+
+	int		ibm_configure_kernel_dump;
+
+	unsigned long	fadump_enabled:1;
+	unsigned long	fadump_supported:1;
+	unsigned long	dump_active:1;
+	unsigned long	dump_registered:1;
+	unsigned long	nocma:1;
+
+	struct fadump_ops	*ops;
+};
+
+struct fadump_ops {
+	u64	(*fadump_init_mem_struct)(struct fw_dump *fadump_conf);
+	u64	(*fadump_get_metadata_size)(void);
+	int	(*fadump_setup_metadata)(struct fw_dump *fadump_conf);
+	u64	(*fadump_get_bootmem_min)(void);
+	int	(*fadump_register)(struct fw_dump *fadump_conf);
+	int	(*fadump_unregister)(struct fw_dump *fadump_conf);
+	int	(*fadump_invalidate)(struct fw_dump *fadump_conf);
+	void	(*fadump_cleanup)(struct fw_dump *fadump_conf);
+	int	(*fadump_process)(struct fw_dump *fadump_conf);
+	void	(*fadump_region_show)(struct fw_dump *fadump_conf,
+				      struct seq_file *m);
+	void	(*fadump_trigger)(struct fadump_crash_info_header *fdh,
+				  const char *msg);
+};
+
+/* Helper functions */
+s32 fadump_setup_cpu_notes_buf(u32 num_cpus);
+void fadump_free_cpu_notes_buf(void);
+u32 *fadump_regs_to_elf_notes(u32 *buf, struct pt_regs *regs);
+void fadump_update_elfcore_header(char *bufp);
+bool is_fadump_boot_mem_contiguous(void);
+bool is_fadump_reserved_mem_contiguous(void);
+
+#else /* !CONFIG_PRESERVE_FA_DUMP */
+
+/* Firmware-assisted dump configuration details. */
+struct fw_dump {
+	u64	boot_mem_top;
+	u64	dump_active;
+};
+
+#endif /* CONFIG_PRESERVE_FA_DUMP */
+
+#ifdef CONFIG_PPC_PSERIES
+extern void rtas_fadump_dt_scan(struct fw_dump *fadump_conf, u64 node);
+#else
+static inline void
+rtas_fadump_dt_scan(struct fw_dump *fadump_conf, u64 node) { }
+#endif
+
+#ifdef CONFIG_PPC_POWERNV
+extern void opal_fadump_dt_scan(struct fw_dump *fadump_conf, u64 node);
+#else
+static inline void
+opal_fadump_dt_scan(struct fw_dump *fadump_conf, u64 node) { }
+#endif
+
+#endif /* _ASM_POWERPC_FADUMP_INTERNAL_H */
diff --git a/arch/powerpc/include/asm/fadump.h b/arch/powerpc/include/asm/fadump.h
index 17d9b6acaf63..526a6a647312 100644
--- a/arch/powerpc/include/asm/fadump.h
+++ b/arch/powerpc/include/asm/fadump.h
@@ -6,196 +6,14 @@
  * Author: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
  */
 
-#ifndef __PPC64_FA_DUMP_H__
-#define __PPC64_FA_DUMP_H__
+#ifndef _ASM_POWERPC_FADUMP_H
+#define _ASM_POWERPC_FADUMP_H
 
 #ifdef CONFIG_FA_DUMP
 
-/*
- * The RMA region will be saved for later dumping when kernel crashes.
- * RMA is Real Mode Area, the first block of logical memory address owned
- * by logical partition, containing the storage that may be accessed with
- * translate off.
- */
-#define RMA_START	0x0
-#define RMA_END		(ppc64_rma_size)
-
-/*
- * On some Power systems where RMO is 128MB, it still requires minimum of
- * 256MB for kernel to boot successfully. When kdump infrastructure is
- * configured to save vmcore over network, we run into OOM issue while
- * loading modules related to network setup. Hence we need aditional 64M
- * of memory to avoid OOM issue.
- */
-#define MIN_BOOT_MEM	(((RMA_END < (0x1UL << 28)) ? (0x1UL << 28) : RMA_END) \
-			+ (0x1UL << 26))
-
-/* The upper limit percentage for user specified boot memory size (25%) */
-#define MAX_BOOT_MEM_RATIO			4
-
-#define memblock_num_regions(memblock_type)	(memblock.memblock_type.cnt)
-
-/* Alignement per CMA requirement. */
-#define FADUMP_CMA_ALIGNMENT	(PAGE_SIZE <<				\
-			max_t(unsigned long, MAX_ORDER - 1, pageblock_order))
-
-/* Firmware provided dump sections */
-#define FADUMP_CPU_STATE_DATA	0x0001
-#define FADUMP_HPTE_REGION	0x0002
-#define FADUMP_REAL_MODE_REGION	0x0011
-
-/* Dump request flag */
-#define FADUMP_REQUEST_FLAG	0x00000001
-
-/* FAD commands */
-#define FADUMP_REGISTER		1
-#define FADUMP_UNREGISTER	2
-#define FADUMP_INVALIDATE	3
-
-/* Dump status flag */
-#define FADUMP_ERROR_FLAG	0x2000
-
-#define FADUMP_CPU_ID_MASK	((1UL << 32) - 1)
-
-#define CPU_UNKNOWN		(~((u32)0))
-
-/* Utility macros */
-#define SKIP_TO_NEXT_CPU(reg_entry)					\
-({									\
-	while (be64_to_cpu(reg_entry->reg_id) != REG_ID("CPUEND"))	\
-		reg_entry++;						\
-	reg_entry++;							\
-})
-
 extern int crashing_cpu;
 
-/* Kernel Dump section info */
-struct fadump_section {
-	__be32	request_flag;
-	__be16	source_data_type;
-	__be16	error_flags;
-	__be64	source_address;
-	__be64	source_len;
-	__be64	bytes_dumped;
-	__be64	destination_address;
-};
-
-/* ibm,configure-kernel-dump header. */
-struct fadump_section_header {
-	__be32	dump_format_version;
-	__be16	dump_num_sections;
-	__be16	dump_status_flag;
-	__be32	offset_first_dump_section;
-
-	/* Fields for disk dump option. */
-	__be32	dd_block_size;
-	__be64	dd_block_offset;
-	__be64	dd_num_blocks;
-	__be32	dd_offset_disk_path;
-
-	/* Maximum time allowed to prevent an automatic dump-reboot. */
-	__be32	max_time_auto;
-};
-
-/*
- * Firmware Assisted dump memory structure. This structure is required for
- * registering future kernel dump with power firmware through rtas call.
- *
- * No disk dump option. Hence disk dump path string section is not included.
- */
-struct fadump_mem_struct {
-	struct fadump_section_header	header;
-
-	/* Kernel dump sections */
-	struct fadump_section		cpu_state_data;
-	struct fadump_section		hpte_region;
-	struct fadump_section		rmr_region;
-};
-
-/* Firmware-assisted dump configuration details. */
-struct fw_dump {
-	unsigned long	cpu_state_data_size;
-	unsigned long	hpte_region_size;
-	unsigned long	boot_memory_size;
-	unsigned long	reserve_dump_area_start;
-	unsigned long	reserve_dump_area_size;
-	/* cmd line option during boot */
-	unsigned long	reserve_bootvar;
-
-	unsigned long	fadumphdr_addr;
-	unsigned long	cpu_notes_buf;
-	unsigned long	cpu_notes_buf_size;
-
-	int		ibm_configure_kernel_dump;
-
-	unsigned long	fadump_enabled:1;
-	unsigned long	fadump_supported:1;
-	unsigned long	dump_active:1;
-	unsigned long	dump_registered:1;
-	unsigned long	nocma:1;
-};
-
-/*
- * Copy the ascii values for first 8 characters from a string into u64
- * variable at their respective indexes.
- * e.g.
- *  The string "FADMPINF" will be converted into 0x4641444d50494e46
- */
-static inline u64 str_to_u64(const char *str)
-{
-	u64 val = 0;
-	int i;
-
-	for (i = 0; i < sizeof(val); i++)
-		val = (*str) ? (val << 8) | *str++ : val << 8;
-	return val;
-}
-#define STR_TO_HEX(x)	str_to_u64(x)
-#define REG_ID(x)	str_to_u64(x)
-
-#define FADUMP_CRASH_INFO_MAGIC		STR_TO_HEX("FADMPINF")
-#define REGSAVE_AREA_MAGIC		STR_TO_HEX("REGSAVE")
-
-/* The firmware-assisted dump format.
- *
- * The register save area is an area in the partition's memory used to preserve
- * the register contents (CPU state data) for the active CPUs during a firmware
- * assisted dump. The dump format contains register save area header followed
- * by register entries. Each list of registers for a CPU starts with
- * "CPUSTRT" and ends with "CPUEND".
- */
-
-/* Register save area header. */
-struct fadump_reg_save_area_header {
-	__be64		magic_number;
-	__be32		version;
-	__be32		num_cpu_offset;
-};
-
-/* Register entry. */
-struct fadump_reg_entry {
-	__be64		reg_id;
-	__be64		reg_value;
-};
-
-/* fadump crash info structure */
-struct fadump_crash_info_header {
-	u64		magic_number;
-	u64		elfcorehdr_addr;
-	u32		crashing_cpu;
-	struct pt_regs	regs;
-	struct cpumask	online_mask;
-};
-
-struct fad_crash_memory_ranges {
-	unsigned long long	base;
-	unsigned long long	size;
-};
-
 extern int is_fadump_memory_area(u64 addr, ulong size);
-extern int early_init_dt_scan_fw_dump(unsigned long node,
-		const char *uname, int depth, void *data);
-extern int fadump_reserve_mem(void);
 extern int setup_fadump(void);
 extern int is_fadump_active(void);
 extern int should_fadump_crash(void);
@@ -207,5 +25,11 @@ static inline int is_fadump_active(void) { return 0; }
 static inline int should_fadump_crash(void) { return 0; }
 static inline void crash_fadump(struct pt_regs *regs, const char *str) { }
 static inline void fadump_cleanup(void) { }
+#endif /* !CONFIG_FA_DUMP */
+
+#if defined(CONFIG_FA_DUMP) || defined(CONFIG_PRESERVE_FA_DUMP)
+extern int early_init_dt_scan_fw_dump(unsigned long node, const char *uname,
+				      int depth, void *data);
+extern int fadump_reserve_mem(void);
 #endif
-#endif
+#endif /* _ASM_POWERPC_FADUMP_H */
diff --git a/arch/powerpc/include/asm/firmware.h b/arch/powerpc/include/asm/firmware.h
index faeca8b76c8c..b3e214a97f3a 100644
--- a/arch/powerpc/include/asm/firmware.h
+++ b/arch/powerpc/include/asm/firmware.h
@@ -50,6 +50,7 @@
 #define FW_FEATURE_DRC_INFO	ASM_CONST(0x0000000800000000)
 #define FW_FEATURE_BLOCK_REMOVE ASM_CONST(0x0000001000000000)
 #define FW_FEATURE_PAPR_SCM 	ASM_CONST(0x0000002000000000)
+#define FW_FEATURE_ULTRAVISOR	ASM_CONST(0x0000004000000000)
 
 #ifndef __ASSEMBLY__
 
@@ -68,9 +69,9 @@ enum {
 		FW_FEATURE_TYPE1_AFFINITY | FW_FEATURE_PRRN |
 		FW_FEATURE_HPT_RESIZE | FW_FEATURE_DRMEM_V2 |
 		FW_FEATURE_DRC_INFO | FW_FEATURE_BLOCK_REMOVE |
-		FW_FEATURE_PAPR_SCM,
+		FW_FEATURE_PAPR_SCM | FW_FEATURE_ULTRAVISOR,
 	FW_FEATURE_PSERIES_ALWAYS = 0,
-	FW_FEATURE_POWERNV_POSSIBLE = FW_FEATURE_OPAL,
+	FW_FEATURE_POWERNV_POSSIBLE = FW_FEATURE_OPAL | FW_FEATURE_ULTRAVISOR,
 	FW_FEATURE_POWERNV_ALWAYS = 0,
 	FW_FEATURE_PS3_POSSIBLE = FW_FEATURE_LPAR | FW_FEATURE_PS3_LV1,
 	FW_FEATURE_PS3_ALWAYS = FW_FEATURE_LPAR | FW_FEATURE_PS3_LV1,
diff --git a/arch/powerpc/include/asm/ftrace.h b/arch/powerpc/include/asm/ftrace.h
index 3dfb80b86561..f54a08a2cd70 100644
--- a/arch/powerpc/include/asm/ftrace.h
+++ b/arch/powerpc/include/asm/ftrace.h
@@ -8,6 +8,8 @@
 #define MCOUNT_ADDR		((unsigned long)(_mcount))
 #define MCOUNT_INSN_SIZE	4 /* sizeof mcount call */
 
+#define HAVE_FUNCTION_GRAPH_RET_ADDR_PTR
+
 #ifdef __ASSEMBLY__
 
 /* Based off of objdump optput from glibc */
diff --git a/arch/powerpc/include/asm/futex.h b/arch/powerpc/include/asm/futex.h
index 3a6aa57b9d90..eea28ca679db 100644
--- a/arch/powerpc/include/asm/futex.h
+++ b/arch/powerpc/include/asm/futex.h
@@ -60,8 +60,7 @@ static inline int arch_futex_atomic_op_inuser(int op, int oparg, int *oval,
 
 	pagefault_enable();
 
-	if (!ret)
-		*oval = oldval;
+	*oval = oldval;
 
 	prevent_write_to_user(uaddr, sizeof(*uaddr));
 	return ret;
diff --git a/arch/powerpc/include/asm/head-64.h b/arch/powerpc/include/asm/head-64.h
index a466765709a9..2dabcf668292 100644
--- a/arch/powerpc/include/asm/head-64.h
+++ b/arch/powerpc/include/asm/head-64.h
@@ -169,47 +169,6 @@ name:
 
 #define ABS_ADDR(label) (label - fs_label + fs_start)
 
-#define EXC_REAL_BEGIN(name, start, size)			\
-	FIXED_SECTION_ENTRY_BEGIN_LOCATION(real_vectors, exc_real_##start##_##name, start, size)
-
-#define EXC_REAL_END(name, start, size)				\
-	FIXED_SECTION_ENTRY_END_LOCATION(real_vectors, exc_real_##start##_##name, start, size)
-
-#define EXC_VIRT_BEGIN(name, start, size)			\
-	FIXED_SECTION_ENTRY_BEGIN_LOCATION(virt_vectors, exc_virt_##start##_##name, start, size)
-
-#define EXC_VIRT_END(name, start, size)				\
-	FIXED_SECTION_ENTRY_END_LOCATION(virt_vectors, exc_virt_##start##_##name, start, size)
-
-#define EXC_COMMON_BEGIN(name)					\
-	USE_TEXT_SECTION();					\
-	.balign IFETCH_ALIGN_BYTES;				\
-	.global name;						\
-	_ASM_NOKPROBE_SYMBOL(name);				\
-	DEFINE_FIXED_SYMBOL(name);				\
-name:
-
-#define TRAMP_REAL_BEGIN(name)					\
-	FIXED_SECTION_ENTRY_BEGIN(real_trampolines, name)
-
-#define TRAMP_VIRT_BEGIN(name)					\
-	FIXED_SECTION_ENTRY_BEGIN(virt_trampolines, name)
-
-#ifdef CONFIG_KVM_BOOK3S_64_HANDLER
-#define TRAMP_KVM_BEGIN(name)					\
-	TRAMP_VIRT_BEGIN(name)
-#else
-#define TRAMP_KVM_BEGIN(name)
-#endif
-
-#define EXC_REAL_NONE(start, size)				\
-	FIXED_SECTION_ENTRY_BEGIN_LOCATION(real_vectors, exc_real_##start##_##unused, start, size); \
-	FIXED_SECTION_ENTRY_END_LOCATION(real_vectors, exc_real_##start##_##unused, start, size)
-
-#define EXC_VIRT_NONE(start, size)				\
-	FIXED_SECTION_ENTRY_BEGIN_LOCATION(virt_vectors, exc_virt_##start##_##unused, start, size); \
-	FIXED_SECTION_ENTRY_END_LOCATION(virt_vectors, exc_virt_##start##_##unused, start, size)
-
 #endif /* __ASSEMBLY__ */
 
 #endif	/* _ASM_POWERPC_HEAD_64_H */
diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
index 20a101046cff..bd6504c28c2f 100644
--- a/arch/powerpc/include/asm/hugetlb.h
+++ b/arch/powerpc/include/asm/hugetlb.h
@@ -31,9 +31,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
 	return 0;
 }
 
-void book3e_hugetlb_preload(struct vm_area_struct *vma, unsigned long ea,
-			    pte_t pte);
-
 #define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
 void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
 			    unsigned long end, unsigned long floor,
diff --git a/arch/powerpc/include/asm/io-workarounds.h b/arch/powerpc/include/asm/io-workarounds.h
index 01567ea4ceaf..3cce499fbe27 100644
--- a/arch/powerpc/include/asm/io-workarounds.h
+++ b/arch/powerpc/include/asm/io-workarounds.h
@@ -8,6 +8,7 @@
 #ifndef _IO_WORKAROUNDS_H
 #define _IO_WORKAROUNDS_H
 
+#ifdef CONFIG_PPC_IO_WORKAROUNDS
 #include <linux/io.h>
 #include <asm/pci-bridge.h>
 
@@ -32,4 +33,23 @@ extern int spiderpci_iowa_init(struct iowa_bus *, void *);
 #define SPIDER_PCI_DUMMY_READ		0x0810
 #define SPIDER_PCI_DUMMY_READ_BASE	0x0814
 
+#endif
+
+#if defined(CONFIG_PPC_IO_WORKAROUNDS) && defined(CONFIG_PPC_INDIRECT_MMIO)
+extern bool io_workaround_inited;
+
+static inline bool iowa_is_active(void)
+{
+	return unlikely(io_workaround_inited);
+}
+#else
+static inline bool iowa_is_active(void)
+{
+	return false;
+}
+#endif
+
+void __iomem *iowa_ioremap(phys_addr_t addr, unsigned long size,
+			   pgprot_t prot, void *caller);
+
 #endif /* _IO_WORKAROUNDS_H */
diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h
index 23e5d5d16c7e..a63ec938636d 100644
--- a/arch/powerpc/include/asm/io.h
+++ b/arch/powerpc/include/asm/io.h
@@ -705,16 +705,9 @@ static inline void iosync(void)
  *   create hand-made mappings for use only by the PCI code and cannot
  *   currently be hooked. Must be page aligned.
  *
- * * __ioremap is the low level implementation used by ioremap and
- *   ioremap_prot and cannot be hooked (but can be used by a hook on one
- *   of the previous ones)
- *
  * * __ioremap_caller is the same as above but takes an explicit caller
  *   reference rather than using __builtin_return_address(0)
  *
- * * __iounmap, is the low level implementation used by iounmap and cannot
- *   be hooked (but can be used by a hook on iounmap)
- *
  */
 extern void __iomem *ioremap(phys_addr_t address, unsigned long size);
 extern void __iomem *ioremap_prot(phys_addr_t address, unsigned long size,
@@ -729,13 +722,14 @@ void __iomem *ioremap_coherent(phys_addr_t address, unsigned long size);
 
 extern void iounmap(volatile void __iomem *addr);
 
-extern void __iomem *__ioremap(phys_addr_t, unsigned long size,
-			       unsigned long flags);
+int early_ioremap_range(unsigned long ea, phys_addr_t pa,
+			unsigned long size, pgprot_t prot);
+void __iomem *do_ioremap(phys_addr_t pa, phys_addr_t offset, unsigned long size,
+			 pgprot_t prot, void *caller);
+
 extern void __iomem *__ioremap_caller(phys_addr_t, unsigned long size,
 				      pgprot_t prot, void *caller);
 
-extern void __iounmap(volatile void __iomem *addr);
-
 extern void __iomem * __ioremap_at(phys_addr_t pa, void *ea,
 				   unsigned long size, pgprot_t prot);
 extern void __iounmap_at(void *ea, unsigned long size);
diff --git a/arch/powerpc/include/asm/iommu.h b/arch/powerpc/include/asm/iommu.h
index 18d342b815e4..350101e11ddb 100644
--- a/arch/powerpc/include/asm/iommu.h
+++ b/arch/powerpc/include/asm/iommu.h
@@ -48,15 +48,16 @@ struct iommu_table_ops {
 	 * returns old TCE and DMA direction mask.
 	 * @tce is a physical address.
 	 */
-	int (*exchange)(struct iommu_table *tbl,
+	int (*xchg_no_kill)(struct iommu_table *tbl,
 			long index,
 			unsigned long *hpa,
-			enum dma_data_direction *direction);
-	/* Real mode */
-	int (*exchange_rm)(struct iommu_table *tbl,
-			long index,
-			unsigned long *hpa,
-			enum dma_data_direction *direction);
+			enum dma_data_direction *direction,
+			bool realmode);
+
+	void (*tce_kill)(struct iommu_table *tbl,
+			unsigned long index,
+			unsigned long pages,
+			bool realmode);
 
 	__be64 *(*useraddrptr)(struct iommu_table *tbl, long index, bool alloc);
 #endif
@@ -111,6 +112,8 @@ struct iommu_table {
 	struct iommu_table_ops *it_ops;
 	struct kref    it_kref;
 	int it_nid;
+	unsigned long it_reserved_start; /* Start of not-DMA-able (MMIO) area */
+	unsigned long it_reserved_end;
 };
 
 #define IOMMU_TABLE_USERSPACE_ENTRY_RO(tbl, entry) \
@@ -149,8 +152,9 @@ extern int iommu_tce_table_put(struct iommu_table *tbl);
 /* Initializes an iommu_table based in values set in the passed-in
  * structure
  */
-extern struct iommu_table *iommu_init_table(struct iommu_table * tbl,
-					    int nid);
+extern struct iommu_table *iommu_init_table(struct iommu_table *tbl,
+		int nid, unsigned long res_start, unsigned long res_end);
+
 #define IOMMU_TABLE_GROUP_MAX_TABLES	2
 
 struct iommu_table_group;
@@ -206,6 +210,12 @@ extern void iommu_del_device(struct device *dev);
 extern long iommu_tce_xchg(struct mm_struct *mm, struct iommu_table *tbl,
 		unsigned long entry, unsigned long *hpa,
 		enum dma_data_direction *direction);
+extern long iommu_tce_xchg_no_kill(struct mm_struct *mm,
+		struct iommu_table *tbl,
+		unsigned long entry, unsigned long *hpa,
+		enum dma_data_direction *direction);
+extern void iommu_tce_kill(struct iommu_table *tbl,
+		unsigned long entry, unsigned long pages);
 #else
 static inline void iommu_register_group(struct iommu_table_group *table_group,
 					int pci_domain_number,
diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
index 6fb5fb4779e0..6fe6ad64cba5 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -297,6 +297,7 @@ struct kvm_arch {
 	cpumask_t cpu_in_guest;
 	u8 radix;
 	u8 fwnmi_enabled;
+	u8 secure_guest;
 	bool threads_indep;
 	bool nested_enable;
 	pgd_t *pgtable;
diff --git a/arch/powerpc/include/asm/machdep.h b/arch/powerpc/include/asm/machdep.h
index c43d6eca9edd..7bcb64444a39 100644
--- a/arch/powerpc/include/asm/machdep.h
+++ b/arch/powerpc/include/asm/machdep.h
@@ -3,9 +3,6 @@
 #define _ASM_POWERPC_MACHDEP_H
 #ifdef __KERNEL__
 
-/*
- */
-
 #include <linux/seq_file.h>
 #include <linux/init.h>
 #include <linux/dma-mapping.h>
@@ -31,10 +28,6 @@ struct pci_host_bridge;
 struct machdep_calls {
 	char		*name;
 #ifdef CONFIG_PPC64
-	void __iomem *	(*ioremap)(phys_addr_t addr, unsigned long size,
-				   pgprot_t prot, void *caller);
-	void		(*iounmap)(volatile void __iomem *token);
-
 #ifdef CONFIG_PM
 	void		(*iommu_save)(void);
 	void		(*iommu_restore)(void);
diff --git a/arch/powerpc/include/asm/mce.h b/arch/powerpc/include/asm/mce.h
index a4c6a74ad2fb..6a6ddaabdb34 100644
--- a/arch/powerpc/include/asm/mce.h
+++ b/arch/powerpc/include/asm/mce.h
@@ -30,6 +30,10 @@ enum MCE_Disposition {
 enum MCE_Initiator {
 	MCE_INITIATOR_UNKNOWN = 0,
 	MCE_INITIATOR_CPU = 1,
+	MCE_INITIATOR_PCI = 2,
+	MCE_INITIATOR_ISA = 3,
+	MCE_INITIATOR_MEMORY= 4,
+	MCE_INITIATOR_POWERMGM = 5,
 };
 
 enum MCE_ErrorType {
@@ -41,6 +45,8 @@ enum MCE_ErrorType {
 	MCE_ERROR_TYPE_USER = 5,
 	MCE_ERROR_TYPE_RA = 6,
 	MCE_ERROR_TYPE_LINK = 7,
+	MCE_ERROR_TYPE_DCACHE = 8,
+	MCE_ERROR_TYPE_ICACHE = 9,
 };
 
 enum MCE_ErrorClass {
@@ -122,7 +128,8 @@ struct machine_check_event {
 			enum MCE_UeErrorType ue_error_type:8;
 			u8		effective_address_provided;
 			u8		physical_address_provided;
-			u8		reserved_1[5];
+			u8		ignore_event;
+			u8		reserved_1[4];
 			u64		effective_address;
 			u64		physical_address;
 			u8		reserved_2[8];
@@ -193,6 +200,7 @@ struct mce_error_info {
 	enum MCE_Initiator	initiator:8;
 	enum MCE_ErrorClass	error_class:8;
 	bool			sync_error;
+	bool			ignore_event;
 };
 
 #define MAX_MC_EVT	100
diff --git a/arch/powerpc/include/asm/mem_encrypt.h b/arch/powerpc/include/asm/mem_encrypt.h
new file mode 100644
index 000000000000..ba9dab07c1be
--- /dev/null
+++ b/arch/powerpc/include/asm/mem_encrypt.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * SVM helper functions
+ *
+ * Copyright 2018 IBM Corporation
+ */
+
+#ifndef _ASM_POWERPC_MEM_ENCRYPT_H
+#define _ASM_POWERPC_MEM_ENCRYPT_H
+
+#include <asm/svm.h>
+
+static inline bool mem_encrypt_active(void)
+{
+	return is_secure_guest();
+}
+
+static inline bool force_dma_unencrypted(struct device *dev)
+{
+	return is_secure_guest();
+}
+
+int set_memory_encrypted(unsigned long addr, int numpages);
+int set_memory_decrypted(unsigned long addr, int numpages);
+
+#endif /* _ASM_POWERPC_MEM_ENCRYPT_H */
diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h
index ba94ce8c22d7..0699cfeeb8c9 100644
--- a/arch/powerpc/include/asm/mmu.h
+++ b/arch/powerpc/include/asm/mmu.h
@@ -257,7 +257,7 @@ extern void radix__mmu_cleanup_all(void);
 /* Functions for creating and updating partition table on POWER9 */
 extern void mmu_partition_table_init(void);
 extern void mmu_partition_table_set_entry(unsigned int lpid, unsigned long dw0,
-					  unsigned long dw1);
+					  unsigned long dw1, bool flush);
 #endif /* CONFIG_PPC64 */
 
 struct mm_struct;
diff --git a/arch/powerpc/include/asm/nohash/32/pgtable.h b/arch/powerpc/include/asm/nohash/32/pgtable.h
index 0284f8f5305f..552b96eef0c8 100644
--- a/arch/powerpc/include/asm/nohash/32/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/32/pgtable.h
@@ -11,8 +11,6 @@
 #include <asm/mmu.h>			/* For sub-arch specific PPC_PIN_SIZE */
 #include <asm/asm-405.h>
 
-extern unsigned long ioremap_bot;
-
 #ifdef CONFIG_44x
 extern int icache_44x_need_flush;
 #endif
@@ -78,23 +76,21 @@ int map_kernel_page(unsigned long va, phys_addr_t pa, pgprot_t prot);
  */
 #include <asm/fixmap.h>
 
-#ifdef CONFIG_HIGHMEM
-#define KVIRT_TOP	PKMAP_BASE
-#else
-#define KVIRT_TOP	FIXADDR_START
-#endif
-
 /*
  * ioremap_bot starts at that address. Early ioremaps move down from there,
  * until mem_init() at which point this becomes the top of the vmalloc
  * and ioremap space
  */
-#ifdef CONFIG_NOT_COHERENT_CACHE
-#define IOREMAP_TOP	((KVIRT_TOP - CONFIG_CONSISTENT_SIZE) & PAGE_MASK)
+#ifdef CONFIG_HIGHMEM
+#define IOREMAP_TOP	PKMAP_BASE
 #else
-#define IOREMAP_TOP	KVIRT_TOP
+#define IOREMAP_TOP	FIXADDR_START
 #endif
 
+/* PPC32 shares vmalloc area with ioremap */
+#define IOREMAP_START	VMALLOC_START
+#define IOREMAP_END	VMALLOC_END
+
 /*
  * Just any arbitrary offset to the start of the vmalloc VM area: the
  * current 16MB value just means that there will be a 64MB "hole" after the
diff --git a/arch/powerpc/include/asm/nohash/64/pgtable.h b/arch/powerpc/include/asm/nohash/64/pgtable.h
index b9f66cf15c31..9a33b8bd842d 100644
--- a/arch/powerpc/include/asm/nohash/64/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/64/pgtable.h
@@ -53,6 +53,7 @@
 #define  PHB_IO_BASE	(ISA_IO_END)
 #define  PHB_IO_END	(KERN_IO_START + FULL_IO_SIZE)
 #define IOREMAP_BASE	(PHB_IO_END)
+#define IOREMAP_START	(ioremap_bot)
 #define IOREMAP_END	(KERN_VIRT_START + KERN_VIRT_SIZE)
 
 
diff --git a/arch/powerpc/include/asm/nohash/pgtable.h b/arch/powerpc/include/asm/nohash/pgtable.h
index 1ca1c1864b32..7fed9dc0f147 100644
--- a/arch/powerpc/include/asm/nohash/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/pgtable.h
@@ -293,5 +293,18 @@ static inline int pgd_huge(pgd_t pgd)
 #define is_hugepd(hpd)		(hugepd_ok(hpd))
 #endif
 
+/*
+ * This gets called at the end of handling a page fault, when
+ * the kernel has put a new PTE into the page table for the process.
+ * We use it to ensure coherency between the i-cache and d-cache
+ * for the page which has just been mapped in.
+ */
+#if defined(CONFIG_PPC_FSL_BOOK3E) && defined(CONFIG_HUGETLB_PAGE)
+void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *ptep);
+#else
+static inline
+void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *ptep) {}
+#endif
+
 #endif /* __ASSEMBLY__ */
 #endif
diff --git a/arch/powerpc/include/asm/opal-api.h b/arch/powerpc/include/asm/opal-api.h
index 383242eb0dea..378e3997845a 100644
--- a/arch/powerpc/include/asm/opal-api.h
+++ b/arch/powerpc/include/asm/opal-api.h
@@ -208,7 +208,10 @@
 #define OPAL_HANDLE_HMI2			166
 #define	OPAL_NX_COPROC_INIT			167
 #define OPAL_XIVE_GET_VP_STATE			170
-#define OPAL_LAST				170
+#define OPAL_MPIPL_UPDATE			173
+#define OPAL_MPIPL_REGISTER_TAG			174
+#define OPAL_MPIPL_QUERY_TAG			175
+#define OPAL_LAST				175
 
 #define QUIESCE_HOLD			1 /* Spin all calls at entry */
 #define QUIESCE_REJECT			2 /* Fail all calls with OPAL_BUSY */
@@ -453,6 +456,7 @@ enum opal_msg_type {
 	OPAL_MSG_DPO		= 5,
 	OPAL_MSG_PRD		= 6,
 	OPAL_MSG_OCC		= 7,
+	OPAL_MSG_PRD2		= 8,
 	OPAL_MSG_TYPE_MAX,
 };
 
@@ -1059,6 +1063,7 @@ enum {
 	OPAL_REBOOT_NORMAL		= 0,
 	OPAL_REBOOT_PLATFORM_ERROR	= 1,
 	OPAL_REBOOT_FULL_IPL		= 2,
+	OPAL_REBOOT_MPIPL		= 3,
 };
 
 /* Argument to OPAL_PCI_TCE_KILL */
@@ -1135,6 +1140,44 @@ enum {
 #define OPAL_PCI_P2P_LOAD		0x2
 #define OPAL_PCI_P2P_STORE		0x4
 
+/* MPIPL update operations */
+enum opal_mpipl_ops {
+	OPAL_MPIPL_ADD_RANGE			= 0,
+	OPAL_MPIPL_REMOVE_RANGE			= 1,
+	OPAL_MPIPL_REMOVE_ALL			= 2,
+	OPAL_MPIPL_FREE_PRESERVED_MEMORY	= 3,
+};
+
+/* Tag will point to various metadata area. Kernel will
+ * use tag to get metadata value.
+ */
+enum opal_mpipl_tags {
+	OPAL_MPIPL_TAG_CPU	= 0,
+	OPAL_MPIPL_TAG_OPAL	= 1,
+	OPAL_MPIPL_TAG_KERNEL	= 2,
+	OPAL_MPIPL_TAG_BOOT_MEM	= 3,
+};
+
+/* Preserved memory details */
+struct opal_mpipl_region {
+	__be64	src;
+	__be64	dest;
+	__be64	size;
+};
+
+/* Structure version */
+#define OPAL_MPIPL_VERSION		0x01
+
+struct opal_mpipl_fadump {
+	u8	version;
+	u8	reserved[7];
+	__be32	crashing_pir;	/* OPAL crashing CPU PIR */
+	__be32	cpu_data_version;
+	__be32	cpu_data_size;
+	__be32	region_cnt;
+	struct	opal_mpipl_region region[];
+} __packed;
+
 #endif /* __ASSEMBLY__ */
 
 #endif /* __OPAL_API_H */
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h
index 57bd029c715e..a0cf8fba4d12 100644
--- a/arch/powerpc/include/asm/opal.h
+++ b/arch/powerpc/include/asm/opal.h
@@ -39,6 +39,7 @@ int64_t opal_npu_spa_clear_cache(uint64_t phb_id, uint32_t bdfn,
 				uint64_t PE_handle);
 int64_t opal_npu_tl_set(uint64_t phb_id, uint32_t bdfn, long cap,
 			uint64_t rate_phys, uint32_t size);
+
 int64_t opal_console_write(int64_t term_number, __be64 *length,
 			   const uint8_t *buffer);
 int64_t opal_console_read(int64_t term_number, __be64 *length,
@@ -272,7 +273,7 @@ int64_t opal_xive_get_vp_info(uint64_t vp,
 int64_t opal_xive_set_vp_info(uint64_t vp,
 			      uint64_t flags,
 			      uint64_t report_cl_pair);
-int64_t opal_xive_allocate_irq(uint32_t chip_id);
+int64_t opal_xive_allocate_irq_raw(uint32_t chip_id);
 int64_t opal_xive_free_irq(uint32_t girq);
 int64_t opal_xive_sync(uint32_t type, uint32_t id);
 int64_t opal_xive_dump(uint32_t type, uint32_t id);
@@ -297,6 +298,10 @@ int opal_sensor_group_clear(u32 group_hndl, int token);
 int opal_sensor_group_enable(u32 group_hndl, int token, bool enable);
 int opal_nx_coproc_init(uint32_t chip_id, uint32_t ct);
 
+s64 opal_mpipl_update(enum opal_mpipl_ops op, u64 src, u64 dest, u64 size);
+s64 opal_mpipl_register_tag(enum opal_mpipl_tags tag, u64 addr);
+s64 opal_mpipl_query_tag(enum opal_mpipl_tags tag, u64 *addr);
+
 s64 opal_signal_system_reset(s32 cpu);
 s64 opal_quiesce(u64 shutdown_type, s32 cpu);
 
diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h
index 0d52f57fca04..c8bb14ff4713 100644
--- a/arch/powerpc/include/asm/page.h
+++ b/arch/powerpc/include/asm/page.h
@@ -215,9 +215,19 @@ static inline bool pfn_valid(unsigned long pfn)
 /*
  * gcc miscompiles (unsigned long)(&static_var) - PAGE_OFFSET
  * with -mcmodel=medium, so we use & and | instead of - and + on 64-bit.
+ * This also results in better code generation.
  */
-#define __va(x) ((void *)(unsigned long)((phys_addr_t)(x) | PAGE_OFFSET))
-#define __pa(x) ((unsigned long)(x) & 0x0fffffffffffffffUL)
+#define __va(x)								\
+({									\
+	VIRTUAL_BUG_ON((unsigned long)(x) >= PAGE_OFFSET);		\
+	(void *)(unsigned long)((phys_addr_t)(x) | PAGE_OFFSET);	\
+})
+
+#define __pa(x)								\
+({									\
+	VIRTUAL_BUG_ON((unsigned long)(x) < PAGE_OFFSET);		\
+	(unsigned long)(x) & 0x0fffffffffffffffUL;			\
+})
 
 #else /* 32-bit, non book E */
 #define __va(x) ((void *)(unsigned long)((phys_addr_t)(x) + PAGE_OFFSET - MEMORY_START))
diff --git a/arch/powerpc/include/asm/page_32.h b/arch/powerpc/include/asm/page_32.h
index 683dfbc67ca8..d64dfe3ac712 100644
--- a/arch/powerpc/include/asm/page_32.h
+++ b/arch/powerpc/include/asm/page_32.h
@@ -40,6 +40,8 @@ typedef unsigned long long pte_basic_t;
 typedef unsigned long pte_basic_t;
 #endif
 
+#include <asm/bug.h>
+
 /*
  * Clear page using the dcbz instruction, which doesn't cause any
  * memory traffic (except to write out any cache lines which get
@@ -49,6 +51,8 @@ static inline void clear_page(void *addr)
 {
 	unsigned int i;
 
+	WARN_ON((unsigned long)addr & (L1_CACHE_BYTES - 1));
+
 	for (i = 0; i < PAGE_SIZE / L1_CACHE_BYTES; i++, addr += L1_CACHE_BYTES)
 		dcbz(addr);
 }
diff --git a/arch/powerpc/include/asm/pci-bridge.h b/arch/powerpc/include/asm/pci-bridge.h
index 8dad1fdf4bd2..ea6ec65970ef 100644
--- a/arch/powerpc/include/asm/pci-bridge.h
+++ b/arch/powerpc/include/asm/pci-bridge.h
@@ -183,6 +183,7 @@ struct iommu_table;
 struct pci_dn {
 	int     flags;
 #define PCI_DN_FLAG_IOV_VF	0x01
+#define PCI_DN_FLAG_DEAD	0x02    /* Device has been hot-removed */
 
 	int	busno;			/* pci bus number */
 	int	devfn;			/* pci device and function number */
diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h
index c58ba7963688..8b7865a2d576 100644
--- a/arch/powerpc/include/asm/pgtable.h
+++ b/arch/powerpc/include/asm/pgtable.h
@@ -68,6 +68,8 @@ extern pgd_t swapper_pg_dir[];
 
 extern void paging_init(void);
 
+extern unsigned long ioremap_bot;
+
 /*
  * kern_addr_valid is intended to indicate whether an address is a valid
  * kernel address.  Most 32-bit archs define it as always true (like this)
@@ -77,18 +79,6 @@ extern void paging_init(void);
 
 #include <asm-generic/pgtable.h>
 
-
-/*
- * This gets called at the end of handling a page fault, when
- * the kernel has put a new PTE into the page table for the process.
- * We use it to ensure coherency between the i-cache and d-cache
- * for the page which has just been mapped in.
- * On machines which use an MMU hash table, we use this to put a
- * corresponding HPTE into the hash table ahead of time, instead of
- * waiting for the inevitable extra hash-table miss exception.
- */
-extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t *);
-
 #ifndef CONFIG_TRANSPARENT_HUGEPAGE
 #define pmd_large(pmd)		0
 #endif
diff --git a/arch/powerpc/include/asm/plpar_wrappers.h b/arch/powerpc/include/asm/plpar_wrappers.h
index cff5a411e595..4497c8afb573 100644
--- a/arch/powerpc/include/asm/plpar_wrappers.h
+++ b/arch/powerpc/include/asm/plpar_wrappers.h
@@ -340,6 +340,12 @@ static inline long plpar_set_ciabr(unsigned long ciabr)
 {
 	return 0;
 }
+
+static inline long plpar_pte_read_4(unsigned long flags, unsigned long ptex,
+				    unsigned long *ptes)
+{
+	return 0;
+}
 #endif /* CONFIG_PPC_PSERIES */
 
 #endif /* _ASM_POWERPC_PLPAR_WRAPPERS_H */
diff --git a/arch/powerpc/include/asm/ppc-pci.h b/arch/powerpc/include/asm/ppc-pci.h
index cec2d6409515..7f4be5a05eb3 100644
--- a/arch/powerpc/include/asm/ppc-pci.h
+++ b/arch/powerpc/include/asm/ppc-pci.h
@@ -62,11 +62,6 @@ void eeh_pe_dev_mode_mark(struct eeh_pe *pe, int mode);
 void eeh_sysfs_add_device(struct pci_dev *pdev);
 void eeh_sysfs_remove_device(struct pci_dev *pdev);
 
-static inline const char *eeh_pci_name(struct pci_dev *pdev) 
-{ 
-	return pdev ? pci_name(pdev) : "<null>";
-} 
-
 static inline const char *eeh_driver_name(struct pci_dev *pdev)
 {
 	return (pdev && pdev->driver) ? pdev->driver->name : "<null>";
@@ -74,6 +69,8 @@ static inline const char *eeh_driver_name(struct pci_dev *pdev)
 
 #endif /* CONFIG_EEH */
 
+#define PCI_BUSNO(bdfn) ((bdfn >> 8) & 0xff)
+
 #else /* CONFIG_PCI */
 static inline void init_pci_config_tokens(void) { }
 #endif /* !CONFIG_PCI */
diff --git a/arch/powerpc/include/asm/ppc4xx_ocm.h b/arch/powerpc/include/asm/ppc4xx_ocm.h
deleted file mode 100644
index fc4db6dcde84..000000000000
--- a/arch/powerpc/include/asm/ppc4xx_ocm.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * PowerPC 4xx OCM memory allocation support
- *
- * (C) Copyright 2009, Applied Micro Circuits Corporation
- * Victor Gallardo (vgallardo@amcc.com)
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- */
-
-#ifndef __ASM_POWERPC_PPC4XX_OCM_H__
-#define __ASM_POWERPC_PPC4XX_OCM_H__
-
-#define PPC4XX_OCM_NON_CACHED 0
-#define PPC4XX_OCM_CACHED     1
-
-#if defined(CONFIG_PPC4xx_OCM)
-
-void *ppc4xx_ocm_alloc(phys_addr_t *phys, int size, int align,
-		  int flags, const char *owner);
-void ppc4xx_ocm_free(const void *virt);
-
-#else
-
-#define ppc4xx_ocm_alloc(phys, size, align, flags, owner)	NULL
-#define ppc4xx_ocm_free(addr)	((void)0)
-
-#endif /* CONFIG_PPC4xx_OCM */
-
-#endif  /* __ASM_POWERPC_PPC4XX_OCM_H__ */
diff --git a/arch/powerpc/include/asm/ppc_asm.h b/arch/powerpc/include/asm/ppc_asm.h
index e0637730a8e7..6b03dff61a05 100644
--- a/arch/powerpc/include/asm/ppc_asm.h
+++ b/arch/powerpc/include/asm/ppc_asm.h
@@ -311,18 +311,48 @@ n:
 	addis	reg,reg,(name - 0b)@ha;		\
 	addi	reg,reg,(name - 0b)@l;
 
-#ifdef __powerpc64__
-#ifdef HAVE_AS_ATHIGH
+#if defined(__powerpc64__) && defined(HAVE_AS_ATHIGH)
 #define __AS_ATHIGH high
 #else
 #define __AS_ATHIGH h
 #endif
-#define LOAD_REG_IMMEDIATE(reg,expr)		\
-	lis     reg,(expr)@highest;		\
-	ori     reg,reg,(expr)@higher;	\
-	rldicr  reg,reg,32,31;		\
-	oris    reg,reg,(expr)@__AS_ATHIGH;	\
-	ori     reg,reg,(expr)@l;
+
+.macro __LOAD_REG_IMMEDIATE_32 r, x
+	.if (\x) >= 0x8000 || (\x) < -0x8000
+		lis \r, (\x)@__AS_ATHIGH
+		.if (\x) & 0xffff != 0
+			ori \r, \r, (\x)@l
+		.endif
+	.else
+		li \r, (\x)@l
+	.endif
+.endm
+
+.macro __LOAD_REG_IMMEDIATE r, x
+	.if (\x) >= 0x80000000 || (\x) < -0x80000000
+		__LOAD_REG_IMMEDIATE_32 \r, (\x) >> 32
+		sldi	\r, \r, 32
+		.if (\x) & 0xffff0000 != 0
+			oris \r, \r, (\x)@__AS_ATHIGH
+		.endif
+		.if (\x) & 0xffff != 0
+			ori \r, \r, (\x)@l
+		.endif
+	.else
+		__LOAD_REG_IMMEDIATE_32 \r, \x
+	.endif
+.endm
+
+#ifdef __powerpc64__
+
+#define LOAD_REG_IMMEDIATE(reg, expr) __LOAD_REG_IMMEDIATE reg, expr
+
+#define LOAD_REG_IMMEDIATE_SYM(reg, tmp, expr)	\
+	lis	tmp, (expr)@highest;		\
+	lis	reg, (expr)@__AS_ATHIGH;	\
+	ori	tmp, tmp, (expr)@higher;	\
+	ori	reg, reg, (expr)@l;		\
+	rldimi	reg, tmp, 32, 0
 
 #define LOAD_REG_ADDR(reg,name)			\
 	ld	reg,name@got(r2)
@@ -335,11 +365,13 @@ n:
 
 #else /* 32-bit */
 
-#define LOAD_REG_IMMEDIATE(reg,expr)		\
+#define LOAD_REG_IMMEDIATE(reg, expr) __LOAD_REG_IMMEDIATE_32 reg, expr
+
+#define LOAD_REG_IMMEDIATE_SYM(reg,expr)		\
 	lis	reg,(expr)@ha;		\
 	addi	reg,reg,(expr)@l;
 
-#define LOAD_REG_ADDR(reg,name)		LOAD_REG_IMMEDIATE(reg, name)
+#define LOAD_REG_ADDR(reg,name)		LOAD_REG_IMMEDIATE_SYM(reg, name)
 
 #define LOAD_REG_ADDRBASE(reg, name)	lis	reg,name@ha
 #define ADDROFF(name)			name@l
@@ -351,19 +383,9 @@ n:
 
 /* various errata or part fixups */
 #ifdef CONFIG_PPC601_SYNC_FIX
-#define SYNC				\
-BEGIN_FTR_SECTION			\
-	sync;				\
-	isync;				\
-END_FTR_SECTION_IFSET(CPU_FTR_601)
-#define SYNC_601			\
-BEGIN_FTR_SECTION			\
-	sync;				\
-END_FTR_SECTION_IFSET(CPU_FTR_601)
-#define ISYNC_601			\
-BEGIN_FTR_SECTION			\
-	isync;				\
-END_FTR_SECTION_IFSET(CPU_FTR_601)
+#define SYNC		sync; isync
+#define SYNC_601	sync
+#define ISYNC_601	isync
 #else
 #define	SYNC
 #define SYNC_601
@@ -389,15 +411,11 @@ END_FTR_SECTION_NESTED(CPU_FTR_CELL_TB_BUG, CPU_FTR_CELL_TB_BUG, 96)
 #define MFTBU(dest)			mfspr dest, SPRN_TBRU
 #endif
 
-#ifndef CONFIG_SMP
-#define TLBSYNC
-#else /* CONFIG_SMP */
 /* tlbsync is not implemented on 601 */
-#define TLBSYNC				\
-BEGIN_FTR_SECTION			\
-	tlbsync;			\
-	sync;				\
-END_FTR_SECTION_IFCLR(CPU_FTR_601)
+#if !defined(CONFIG_SMP) || defined(CONFIG_PPC_BOOK3S_601)
+#define TLBSYNC
+#else
+#define TLBSYNC		tlbsync; sync
 #endif
 
 #ifdef CONFIG_PPC64
diff --git a/arch/powerpc/include/asm/ptrace.h b/arch/powerpc/include/asm/ptrace.h
index feee1b21bbd5..ee3ada66deb5 100644
--- a/arch/powerpc/include/asm/ptrace.h
+++ b/arch/powerpc/include/asm/ptrace.h
@@ -203,7 +203,11 @@ do {									      \
 #endif /* __powerpc64__ */
 
 #define arch_has_single_step()	(1)
-#define arch_has_block_step()	(!cpu_has_feature(CPU_FTR_601))
+#ifndef CONFIG_BOOK3S_601
+#define arch_has_block_step()	(true)
+#else
+#define arch_has_block_step()	(false)
+#endif
 #define ARCH_HAS_USER_SINGLE_STEP_REPORT
 
 /*
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index 10caa145f98b..ec3714cf0989 100644
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -38,6 +38,7 @@
 #define MSR_TM_LG	32		/* Trans Mem Available */
 #define MSR_VEC_LG	25	        /* Enable AltiVec */
 #define MSR_VSX_LG	23		/* Enable VSX */
+#define MSR_S_LG	22		/* Secure state */
 #define MSR_POW_LG	18		/* Enable Power Management */
 #define MSR_WE_LG	18		/* Wait State Enable */
 #define MSR_TGPR_LG	17		/* TLB Update registers in use */
@@ -71,11 +72,13 @@
 #define MSR_SF		__MASK(MSR_SF_LG)	/* Enable 64 bit mode */
 #define MSR_ISF		__MASK(MSR_ISF_LG)	/* Interrupt 64b mode valid on 630 */
 #define MSR_HV 		__MASK(MSR_HV_LG)	/* Hypervisor state */
+#define MSR_S		__MASK(MSR_S_LG)	/* Secure state */
 #else
 /* so tests for these bits fail on 32-bit */
 #define MSR_SF		0
 #define MSR_ISF		0
 #define MSR_HV		0
+#define MSR_S		0
 #endif
 
 /*
diff --git a/arch/powerpc/include/asm/scom.h b/arch/powerpc/include/asm/scom.h
deleted file mode 100644
index 08c44396e54a..000000000000
--- a/arch/powerpc/include/asm/scom.h
+++ /dev/null
@@ -1,154 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * Copyright 2010 Benjamin Herrenschmidt, IBM Corp
- *                <benh@kernel.crashing.org>
- *     and        David Gibson, IBM Corporation.
- */
-
-#ifndef _ASM_POWERPC_SCOM_H
-#define _ASM_POWERPC_SCOM_H
-
-#ifdef __KERNEL__
-#ifndef __ASSEMBLY__
-#ifdef CONFIG_PPC_SCOM
-
-/*
- * The SCOM bus is a sideband bus used for accessing various internal
- * registers of the processor or the chipset. The implementation details
- * differ between processors and platforms, and the access method as
- * well.
- *
- * This API allows to "map" ranges of SCOM register numbers associated
- * with a given SCOM controller. The later must be represented by a
- * device node, though some implementations might support NULL if there
- * is no possible ambiguity
- *
- * Then, scom_read/scom_write can be used to accesses registers inside
- * that range. The argument passed is a register number relative to
- * the beginning of the range mapped.
- */
-
-typedef void *scom_map_t;
-
-/* Value for an invalid SCOM map */
-#define SCOM_MAP_INVALID	(NULL)
-
-/* The scom_controller data structure is what the platform passes
- * to the core code in scom_init, it provides the actual implementation
- * of all the SCOM functions
- */
-struct scom_controller {
-	scom_map_t (*map)(struct device_node *ctrl_dev, u64 reg, u64 count);
-	void (*unmap)(scom_map_t map);
-
-	int (*read)(scom_map_t map, u64 reg, u64 *value);
-	int (*write)(scom_map_t map, u64 reg, u64 value);
-};
-
-extern const struct scom_controller *scom_controller;
-
-/**
- * scom_init - Initialize the SCOM backend, called by the platform
- * @controller: The platform SCOM controller
- */
-static inline void scom_init(const struct scom_controller *controller)
-{
-	scom_controller = controller;
-}
-
-/**
- * scom_map_ok - Test is a SCOM mapping is successful
- * @map: The result of scom_map to test
- */
-static inline int scom_map_ok(scom_map_t map)
-{
-	return map != SCOM_MAP_INVALID;
-}
-
-/**
- * scom_map - Map a block of SCOM registers
- * @ctrl_dev: Device node of the SCOM controller
- *            some implementations allow NULL here
- * @reg: first SCOM register to map
- * @count: Number of SCOM registers to map
- */
-
-static inline scom_map_t scom_map(struct device_node *ctrl_dev,
-				  u64 reg, u64 count)
-{
-	return scom_controller->map(ctrl_dev, reg, count);
-}
-
-/**
- * scom_find_parent - Find the SCOM controller for a device
- * @dev: OF node of the device
- *
- * This is not meant for general usage, but in combination with
- * scom_map() allows to map registers not represented by the
- * device own scom-reg property. Useful for applying HW workarounds
- * on things not properly represented in the device-tree for example.
- */
-struct device_node *scom_find_parent(struct device_node *dev);
-
-
-/**
- * scom_map_device - Map a device's block of SCOM registers
- * @dev: OF node of the device
- * @index: Register bank index (index in "scom-reg" property)
- *
- * This function will use the device-tree binding for SCOM which
- * is to follow "scom-parent" properties until it finds a node with
- * a "scom-controller" property to find the controller. It will then
- * use the "scom-reg" property which is made of reg/count pairs,
- * each of them having a size defined by the controller's #scom-cells
- * property
- */
-extern scom_map_t scom_map_device(struct device_node *dev, int index);
-
-
-/**
- * scom_unmap - Unmap a block of SCOM registers
- * @map: Result of scom_map is to be unmapped
- */
-static inline void scom_unmap(scom_map_t map)
-{
-	if (scom_map_ok(map))
-		scom_controller->unmap(map);
-}
-
-/**
- * scom_read - Read a SCOM register
- * @map: Result of scom_map
- * @reg: Register index within that map
- * @value: Updated with the value read
- *
- * Returns 0 (success) or a negative error code
- */
-static inline int scom_read(scom_map_t map, u64 reg, u64 *value)
-{
-	int rc;
-
-	rc = scom_controller->read(map, reg, value);
-	if (rc)
-		*value = 0xfffffffffffffffful;
-	return rc;
-}
-
-/**
- * scom_write - Write to a SCOM register
- * @map: Result of scom_map
- * @reg: Register index within that map
- * @value: Value to write
- *
- * Returns 0 (success) or a negative error code
- */
-static inline int scom_write(scom_map_t map, u64 reg, u64 value)
-{
-	return scom_controller->write(map, reg, value);
-}
-
-
-#endif /* CONFIG_PPC_SCOM */
-#endif /* __ASSEMBLY__ */
-#endif /* __KERNEL__ */
-#endif /* _ASM_POWERPC_SCOM_H */
diff --git a/arch/powerpc/include/asm/sections.h b/arch/powerpc/include/asm/sections.h
index 4a1664a8658d..5a9b6eb651b6 100644
--- a/arch/powerpc/include/asm/sections.h
+++ b/arch/powerpc/include/asm/sections.h
@@ -61,17 +61,6 @@ static inline int overlaps_kernel_text(unsigned long start, unsigned long end)
 		(unsigned long)_stext < end;
 }
 
-static inline int overlaps_kvm_tmp(unsigned long start, unsigned long end)
-{
-#ifdef CONFIG_KVM_GUEST
-	extern char kvm_tmp[];
-	return start < (unsigned long)kvm_tmp &&
-		(unsigned long)&kvm_tmp[1024 * 1024] < end;
-#else
-	return 0;
-#endif
-}
-
 #ifdef PPC64_ELF_ABI_v1
 
 #define HAVE_DEREFERENCE_FUNCTION_DESCRIPTOR 1
diff --git a/arch/powerpc/include/asm/setjmp.h b/arch/powerpc/include/asm/setjmp.h
index d995061f5f86..e9f81bb3f83b 100644
--- a/arch/powerpc/include/asm/setjmp.h
+++ b/arch/powerpc/include/asm/setjmp.h
@@ -7,7 +7,7 @@
 
 #define JMP_BUF_LEN    23
 
-extern long setjmp(long *);
-extern void longjmp(long *, long);
+extern long setjmp(long *) __attribute__((returns_twice));
+extern void longjmp(long *, long) __attribute__((noreturn));
 
 #endif /* _ASM_POWERPC_SETJMP_H */
diff --git a/arch/powerpc/include/asm/spinlock.h b/arch/powerpc/include/asm/spinlock.h
index a47f827bc5f1..e9a960e28f3c 100644
--- a/arch/powerpc/include/asm/spinlock.h
+++ b/arch/powerpc/include/asm/spinlock.h
@@ -101,15 +101,43 @@ static inline int arch_spin_trylock(arch_spinlock_t *lock)
 
 #if defined(CONFIG_PPC_SPLPAR)
 /* We only yield to the hypervisor if we are in shared processor mode */
-#define SHARED_PROCESSOR (lppaca_shared_proc(local_paca->lppaca_ptr))
-extern void __spin_yield(arch_spinlock_t *lock);
-extern void __rw_yield(arch_rwlock_t *lock);
+void splpar_spin_yield(arch_spinlock_t *lock);
+void splpar_rw_yield(arch_rwlock_t *lock);
 #else /* SPLPAR */
-#define __spin_yield(x)	barrier()
-#define __rw_yield(x)	barrier()
-#define SHARED_PROCESSOR	0
+static inline void splpar_spin_yield(arch_spinlock_t *lock) {};
+static inline void splpar_rw_yield(arch_rwlock_t *lock) {};
 #endif
 
+static inline bool is_shared_processor(void)
+{
+/*
+ * LPPACA is only available on Pseries so guard anything LPPACA related to
+ * allow other platforms (which include this common header) to compile.
+ */
+#ifdef CONFIG_PPC_PSERIES
+	return (IS_ENABLED(CONFIG_PPC_SPLPAR) &&
+		lppaca_shared_proc(local_paca->lppaca_ptr));
+#else
+	return false;
+#endif
+}
+
+static inline void spin_yield(arch_spinlock_t *lock)
+{
+	if (is_shared_processor())
+		splpar_spin_yield(lock);
+	else
+		barrier();
+}
+
+static inline void rw_yield(arch_rwlock_t *lock)
+{
+	if (is_shared_processor())
+		splpar_rw_yield(lock);
+	else
+		barrier();
+}
+
 static inline void arch_spin_lock(arch_spinlock_t *lock)
 {
 	while (1) {
@@ -117,8 +145,8 @@ static inline void arch_spin_lock(arch_spinlock_t *lock)
 			break;
 		do {
 			HMT_low();
-			if (SHARED_PROCESSOR)
-				__spin_yield(lock);
+			if (is_shared_processor())
+				splpar_spin_yield(lock);
 		} while (unlikely(lock->slock != 0));
 		HMT_medium();
 	}
@@ -136,8 +164,8 @@ void arch_spin_lock_flags(arch_spinlock_t *lock, unsigned long flags)
 		local_irq_restore(flags);
 		do {
 			HMT_low();
-			if (SHARED_PROCESSOR)
-				__spin_yield(lock);
+			if (is_shared_processor())
+				splpar_spin_yield(lock);
 		} while (unlikely(lock->slock != 0));
 		HMT_medium();
 		local_irq_restore(flags_dis);
@@ -226,8 +254,8 @@ static inline void arch_read_lock(arch_rwlock_t *rw)
 			break;
 		do {
 			HMT_low();
-			if (SHARED_PROCESSOR)
-				__rw_yield(rw);
+			if (is_shared_processor())
+				splpar_rw_yield(rw);
 		} while (unlikely(rw->lock < 0));
 		HMT_medium();
 	}
@@ -240,8 +268,8 @@ static inline void arch_write_lock(arch_rwlock_t *rw)
 			break;
 		do {
 			HMT_low();
-			if (SHARED_PROCESSOR)
-				__rw_yield(rw);
+			if (is_shared_processor())
+				splpar_rw_yield(rw);
 		} while (unlikely(rw->lock != 0));
 		HMT_medium();
 	}
@@ -281,9 +309,9 @@ static inline void arch_write_unlock(arch_rwlock_t *rw)
 	rw->lock = 0;
 }
 
-#define arch_spin_relax(lock)	__spin_yield(lock)
-#define arch_read_relax(lock)	__rw_yield(lock)
-#define arch_write_relax(lock)	__rw_yield(lock)
+#define arch_spin_relax(lock)	spin_yield(lock)
+#define arch_read_relax(lock)	rw_yield(lock)
+#define arch_write_relax(lock)	rw_yield(lock)
 
 /* See include/linux/spinlock.h */
 #define smp_mb__after_spinlock()   smp_mb()
diff --git a/arch/powerpc/include/asm/string.h b/arch/powerpc/include/asm/string.h
index 9bf6dffb4090..b72692702f35 100644
--- a/arch/powerpc/include/asm/string.h
+++ b/arch/powerpc/include/asm/string.h
@@ -53,7 +53,9 @@ void *__memmove(void *to, const void *from, __kernel_size_t n);
 #ifndef CONFIG_KASAN
 #define __HAVE_ARCH_MEMSET32
 #define __HAVE_ARCH_MEMSET64
+#define __HAVE_ARCH_MEMCPY_MCSAFE
 
+extern int memcpy_mcsafe(void *dst, const void *src, __kernel_size_t sz);
 extern void *__memset16(uint16_t *, uint16_t v, __kernel_size_t);
 extern void *__memset32(uint32_t *, uint32_t v, __kernel_size_t);
 extern void *__memset64(uint64_t *, uint64_t v, __kernel_size_t);
diff --git a/arch/powerpc/include/asm/svm.h b/arch/powerpc/include/asm/svm.h
new file mode 100644
index 000000000000..85580b30aba4
--- /dev/null
+++ b/arch/powerpc/include/asm/svm.h
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * SVM helper functions
+ *
+ * Copyright 2018 Anshuman Khandual, IBM Corporation.
+ */
+
+#ifndef _ASM_POWERPC_SVM_H
+#define _ASM_POWERPC_SVM_H
+
+#ifdef CONFIG_PPC_SVM
+
+static inline bool is_secure_guest(void)
+{
+	return mfmsr() & MSR_S;
+}
+
+void dtl_cache_ctor(void *addr);
+#define get_dtl_cache_ctor()	(is_secure_guest() ? dtl_cache_ctor : NULL)
+
+#else /* CONFIG_PPC_SVM */
+
+static inline bool is_secure_guest(void)
+{
+	return false;
+}
+
+#define get_dtl_cache_ctor() NULL
+
+#endif /* CONFIG_PPC_SVM */
+#endif /* _ASM_POWERPC_SVM_H */
diff --git a/arch/powerpc/include/asm/time.h b/arch/powerpc/include/asm/time.h
index 54f4ec1f9fab..08dbe3e6831c 100644
--- a/arch/powerpc/include/asm/time.h
+++ b/arch/powerpc/include/asm/time.h
@@ -41,11 +41,7 @@ struct div_result {
 
 /* Accessor functions for the timebase (RTC on 601) registers. */
 /* If one day CONFIG_POWER is added just define __USE_RTC as 1 */
-#ifdef CONFIG_PPC_BOOK3S_32
-#define __USE_RTC()	(cpu_has_feature(CPU_FTR_USE_RTC))
-#else
-#define __USE_RTC()	0
-#endif
+#define __USE_RTC()	(IS_ENABLED(CONFIG_PPC_BOOK3S_601))
 
 #ifdef CONFIG_PPC64
 
diff --git a/arch/powerpc/include/asm/timex.h b/arch/powerpc/include/asm/timex.h
index 926b9f91a3ef..d2d2c4bd8435 100644
--- a/arch/powerpc/include/asm/timex.h
+++ b/arch/powerpc/include/asm/timex.h
@@ -17,38 +17,10 @@ typedef unsigned long cycles_t;
 
 static inline cycles_t get_cycles(void)
 {
-#ifdef __powerpc64__
+	if (IS_ENABLED(CONFIG_BOOK3S_601))
+		return 0;
+
 	return mftb();
-#else
-	cycles_t ret;
-
-	/*
-	 * For the "cycle" counter we use the timebase lower half.
-	 * Currently only used on SMP.
-	 */
-
-	ret = 0;
-
-	__asm__ __volatile__(
-#ifdef CONFIG_PPC_8xx
-		"97:	mftb %0\n"
-#else
-		"97:	mfspr %0, %2\n"
-#endif
-		"99:\n"
-		".section __ftr_fixup,\"a\"\n"
-		".align 2\n"
-		"98:\n"
-		"	.long %1\n"
-		"	.long 0\n"
-		"	.long 97b-98b\n"
-		"	.long 99b-98b\n"
-		"	.long 0\n"
-		"	.long 0\n"
-		".previous"
-		: "=r" (ret) : "i" (CPU_FTR_601), "i" (SPRN_TBRL));
-	return ret;
-#endif
 }
 
 #endif	/* __KERNEL__ */
diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h
index 8b03eb44e876..15002b51ff18 100644
--- a/arch/powerpc/include/asm/uaccess.h
+++ b/arch/powerpc/include/asm/uaccess.h
@@ -387,6 +387,20 @@ static inline unsigned long raw_copy_to_user(void __user *to,
 	return ret;
 }
 
+static __always_inline unsigned long __must_check
+copy_to_user_mcsafe(void __user *to, const void *from, unsigned long n)
+{
+	if (likely(check_copy_size(from, n, true))) {
+		if (access_ok(to, n)) {
+			allow_write_to_user(to, n);
+			n = memcpy_mcsafe((void *)to, from, n);
+			prevent_write_to_user(to, n);
+		}
+	}
+
+	return n;
+}
+
 extern unsigned long __clear_user(void __user *addr, unsigned long size);
 
 static inline unsigned long clear_user(void __user *addr, unsigned long size)
diff --git a/arch/powerpc/include/asm/ultravisor-api.h b/arch/powerpc/include/asm/ultravisor-api.h
new file mode 100644
index 000000000000..4fcda1d5793d
--- /dev/null
+++ b/arch/powerpc/include/asm/ultravisor-api.h
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Ultravisor API.
+ *
+ * Copyright 2019, IBM Corporation.
+ *
+ */
+#ifndef _ASM_POWERPC_ULTRAVISOR_API_H
+#define _ASM_POWERPC_ULTRAVISOR_API_H
+
+#include <asm/hvcall.h>
+
+/* Return codes */
+#define U_BUSY			H_BUSY
+#define U_FUNCTION		H_FUNCTION
+#define U_NOT_AVAILABLE		H_NOT_AVAILABLE
+#define U_P2			H_P2
+#define U_P3			H_P3
+#define U_P4			H_P4
+#define U_P5			H_P5
+#define U_PARAMETER		H_PARAMETER
+#define U_PERMISSION		H_PERMISSION
+#define U_SUCCESS		H_SUCCESS
+
+/* opcodes */
+#define UV_WRITE_PATE			0xF104
+#define UV_RETURN			0xF11C
+#define UV_ESM				0xF110
+#define UV_SHARE_PAGE			0xF130
+#define UV_UNSHARE_PAGE			0xF134
+#define UV_UNSHARE_ALL_PAGES		0xF140
+
+#endif /* _ASM_POWERPC_ULTRAVISOR_API_H */
diff --git a/arch/powerpc/include/asm/ultravisor.h b/arch/powerpc/include/asm/ultravisor.h
new file mode 100644
index 000000000000..b1bc2e043ed4
--- /dev/null
+++ b/arch/powerpc/include/asm/ultravisor.h
@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Ultravisor definitions
+ *
+ * Copyright 2019, IBM Corporation.
+ *
+ */
+#ifndef _ASM_POWERPC_ULTRAVISOR_H
+#define _ASM_POWERPC_ULTRAVISOR_H
+
+#include <asm/asm-prototypes.h>
+#include <asm/ultravisor-api.h>
+#include <asm/firmware.h>
+
+int early_init_dt_scan_ultravisor(unsigned long node, const char *uname,
+				  int depth, void *data);
+
+/*
+ * In ultravisor enabled systems, PTCR becomes ultravisor privileged only for
+ * writing and an attempt to write to it will cause a Hypervisor Emulation
+ * Assistance interrupt.
+ */
+static inline void set_ptcr_when_no_uv(u64 val)
+{
+	if (!firmware_has_feature(FW_FEATURE_ULTRAVISOR))
+		mtspr(SPRN_PTCR, val);
+}
+
+static inline int uv_register_pate(u64 lpid, u64 dw0, u64 dw1)
+{
+	return ucall_norets(UV_WRITE_PATE, lpid, dw0, dw1);
+}
+
+static inline int uv_share_page(u64 pfn, u64 npages)
+{
+	return ucall_norets(UV_SHARE_PAGE, pfn, npages);
+}
+
+static inline int uv_unshare_page(u64 pfn, u64 npages)
+{
+	return ucall_norets(UV_UNSHARE_PAGE, pfn, npages);
+}
+
+static inline int uv_unshare_all_pages(void)
+{
+	return ucall_norets(UV_UNSHARE_ALL_PAGES);
+}
+
+#endif	/* _ASM_POWERPC_ULTRAVISOR_H */
diff --git a/arch/powerpc/include/asm/xive.h b/arch/powerpc/include/asm/xive.h
index 818989e11678..24cdf97376c4 100644
--- a/arch/powerpc/include/asm/xive.h
+++ b/arch/powerpc/include/asm/xive.h
@@ -99,6 +99,7 @@ extern void xive_flush_interrupt(void);
 
 /* xmon hook */
 extern void xmon_xive_do_dump(int cpu);
+extern int xmon_xive_get_irq_config(u32 hw_irq, struct irq_data *d);
 
 /* APIs used by KVM */
 extern u32 xive_native_default_eq_shift(void);