Merge tag 'powerpc-4.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:
 "Notable changes:

   - A fix for a bug in our page table fragment allocator, where a page
     table page could be freed and reallocated for something else while
     still in use, leading to memory corruption etc. The fix reuses
     pt_mm in struct page (x86 only) for a powerpc only refcount.

   - Fixes to our pkey support. Several are user-visible changes, but
     bring us in to line with x86 behaviour and/or fix outright bugs.
     Thanks to Florian Weimer for reporting many of these.

   - A series to improve the hvc driver & related OPAL console code,
     which have been seen to cause hardlockups at times. The hvc driver
     changes in particular have been in linux-next for ~month.

   - Increase our MAX_PHYSMEM_BITS to 128TB when SPARSEMEM_VMEMMAP=y.

   - Remove Power8 DD1 and Power9 DD1 support, neither chip should be in
     use anywhere other than as a paper weight.

   - An optimised memcmp implementation using Power7-or-later VMX
     instructions

   - Support for barrier_nospec on some NXP CPUs.

   - Support for flushing the count cache on context switch on some IBM
     CPUs (controlled by firmware), as a Spectre v2 mitigation.

   - A series to enhance the information we print on unhandled signals
     to bring it into line with other arches, including showing the
     offending VMA and dumping the instructions around the fault.

  Thanks to: Aaro Koskinen, Akshay Adiga, Alastair D'Silva, Alexey
  Kardashevskiy, Alexey Spirkov, Alistair Popple, Andrew Donnellan,
  Aneesh Kumar K.V, Anju T Sudhakar, Arnd Bergmann, Bartosz Golaszewski,
  Benjamin Herrenschmidt, Bharat Bhushan, Bjoern Noetel, Boqun Feng,
  Breno Leitao, Bryant G. Ly, Camelia Groza, Christophe Leroy, Christoph
  Hellwig, Cyril Bur, Dan Carpenter, Daniel Klamt, Darren Stevens, Dave
  Young, David Gibson, Diana Craciun, Finn Thain, Florian Weimer,
  Frederic Barrat, Gautham R. Shenoy, Geert Uytterhoeven, Geoff Levand,
  Guenter Roeck, Gustavo Romero, Haren Myneni, Hari Bathini, Joel
  Stanley, Jonathan Neuschäfer, Kees Cook, Madhavan Srinivasan, Mahesh
  Salgaonkar, Markus Elfring, Mathieu Malaterre, Mauro S. M. Rodrigues,
  Michael Hanselmann, Michael Neuling, Michael Schmitz, Mukesh Ojha,
  Murilo Opsfelder Araujo, Nicholas Piggin, Parth Y Shah, Paul
  Mackerras, Paul Menzel, Ram Pai, Randy Dunlap, Rashmica Gupta, Reza
  Arbab, Rodrigo R. Galvao, Russell Currey, Sam Bobroff, Scott Wood,
  Shilpasri G Bhat, Simon Guo, Souptick Joarder, Stan Johnson, Thiago
  Jung Bauermann, Tyrel Datwyler, Vaibhav Jain, Vasant Hegde, Venkat
  Rao, zhong jiang"

* tag 'powerpc-4.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (234 commits)
  powerpc/mm/book3s/radix: Add mapping statistics
  powerpc/uaccess: Enable get_user(u64, *p) on 32-bit
  powerpc/mm/hash: Remove unnecessary do { } while(0) loop
  powerpc/64s: move machine check SLB flushing to mm/slb.c
  powerpc/powernv/idle: Fix build error
  powerpc/mm/tlbflush: update the mmu_gather page size while iterating address range
  powerpc/mm: remove warning about ‘type’ being set
  powerpc/32: Include setup.h header file to fix warnings
  powerpc: Move `path` variable inside DEBUG_PROM
  powerpc/powermac: Make some functions static
  powerpc/powermac: Remove variable x that's never read
  cxl: remove a dead branch
  powerpc/powermac: Add missing include of header pmac.h
  powerpc/kexec: Use common error handling code in setup_new_fdt()
  powerpc/xmon: Add address lookup for percpu symbols
  powerpc/mm: remove huge_pte_offset_and_shift() prototype
  powerpc/lib: Use patch_site to patch copy_32 functions once cache is enabled
  powerpc/pseries: Fix endianness while restoring of r3 in MCE handler.
  powerpc/fadump: merge adjacent memory ranges to reduce PT_LOAD segements
  powerpc/fadump: handle crash memory ranges array index overflow
  ...

1 files changed, 52 insertions, 66 deletions

diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h
index c40b4380951c..a86feddddad0 100644
--- a/arch/powerpc/include/asm/exception-64s.h
+++ b/arch/powerpc/include/asm/exception-64s.h
@@ -35,6 +35,7 @@
  * implementations as possible.
  */
 #include <asm/head-64.h>
+#include <asm/feature-fixups.h>
 
 /* PACA save area offsets (exgen, exmc, etc) */
 #define EX_R9		0
@@ -156,7 +157,7 @@
 	b	hrfi_flush_fallback
 
 #ifdef CONFIG_RELOCATABLE
-#define __EXCEPTION_RELON_PROLOG_PSERIES_1(label, h)			\
+#define __EXCEPTION_PROLOG_2_RELON(label, h)				\
 	mfspr	r11,SPRN_##h##SRR0;	/* save SRR0 */			\
 	LOAD_HANDLER(r12,label);					\
 	mtctr	r12;							\
@@ -166,25 +167,26 @@
 	bctr;
 #else
 /* If not relocatable, we can jump directly -- and save messing with LR */
-#define __EXCEPTION_RELON_PROLOG_PSERIES_1(label, h)			\
+#define __EXCEPTION_PROLOG_2_RELON(label, h)				\
 	mfspr	r11,SPRN_##h##SRR0;	/* save SRR0 */			\
 	mfspr	r12,SPRN_##h##SRR1;	/* and SRR1 */			\
 	li	r10,MSR_RI;						\
 	mtmsrd 	r10,1;			/* Set RI (EE=0) */		\
 	b	label;
 #endif
-#define EXCEPTION_RELON_PROLOG_PSERIES_1(label, h)			\
-	__EXCEPTION_RELON_PROLOG_PSERIES_1(label, h)			\
+#define EXCEPTION_PROLOG_2_RELON(label, h)				\
+	__EXCEPTION_PROLOG_2_RELON(label, h)
 
 /*
- * As EXCEPTION_PROLOG_PSERIES(), except we've already got relocation on
- * so no need to rfid.  Save lr in case we're CONFIG_RELOCATABLE, in which
- * case EXCEPTION_RELON_PROLOG_PSERIES_1 will be using lr.
+ * As EXCEPTION_PROLOG(), except we've already got relocation on so no need to
+ * rfid. Save LR in case we're CONFIG_RELOCATABLE, in which case
+ * EXCEPTION_PROLOG_2_RELON will be using LR.
  */
-#define EXCEPTION_RELON_PROLOG_PSERIES(area, label, h, extra, vec)	\
+#define EXCEPTION_RELON_PROLOG(area, label, h, extra, vec)		\
+	SET_SCRATCH0(r13);		/* save r13 */			\
 	EXCEPTION_PROLOG_0(area);					\
 	EXCEPTION_PROLOG_1(area, extra, vec);				\
-	EXCEPTION_RELON_PROLOG_PSERIES_1(label, h)
+	EXCEPTION_PROLOG_2_RELON(label, h)
 
 /*
  * We're short on space and time in the exception prolog, so we can't
@@ -315,7 +317,7 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
 #define EXCEPTION_PROLOG_1(area, extra, vec)				\
 	_EXCEPTION_PROLOG_1(area, extra, vec)
 
-#define __EXCEPTION_PROLOG_PSERIES_1(label, h)				\
+#define __EXCEPTION_PROLOG_2(label, h)					\
 	ld	r10,PACAKMSR(r13);	/* get MSR value for kernel */	\
 	mfspr	r11,SPRN_##h##SRR0;	/* save SRR0 */			\
 	LOAD_HANDLER(r12,label)						\
@@ -324,11 +326,11 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
 	mtspr	SPRN_##h##SRR1,r10;					\
 	h##RFI_TO_KERNEL;						\
 	b	.	/* prevent speculative execution */
-#define EXCEPTION_PROLOG_PSERIES_1(label, h)				\
-	__EXCEPTION_PROLOG_PSERIES_1(label, h)
+#define EXCEPTION_PROLOG_2(label, h)					\
+	__EXCEPTION_PROLOG_2(label, h)
 
 /* _NORI variant keeps MSR_RI clear */
-#define __EXCEPTION_PROLOG_PSERIES_1_NORI(label, h)			\
+#define __EXCEPTION_PROLOG_2_NORI(label, h)				\
 	ld	r10,PACAKMSR(r13);	/* get MSR value for kernel */	\
 	xori	r10,r10,MSR_RI;		/* Clear MSR_RI */		\
 	mfspr	r11,SPRN_##h##SRR0;	/* save SRR0 */			\
@@ -339,13 +341,14 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
 	h##RFI_TO_KERNEL;						\
 	b	.	/* prevent speculative execution */
 
-#define EXCEPTION_PROLOG_PSERIES_1_NORI(label, h)			\
-	__EXCEPTION_PROLOG_PSERIES_1_NORI(label, h)
+#define EXCEPTION_PROLOG_2_NORI(label, h)				\
+	__EXCEPTION_PROLOG_2_NORI(label, h)
 
-#define EXCEPTION_PROLOG_PSERIES(area, label, h, extra, vec)		\
+#define EXCEPTION_PROLOG(area, label, h, extra, vec)			\
+	SET_SCRATCH0(r13);		/* save r13 */			\
 	EXCEPTION_PROLOG_0(area);					\
 	EXCEPTION_PROLOG_1(area, extra, vec);				\
-	EXCEPTION_PROLOG_PSERIES_1(label, h);
+	EXCEPTION_PROLOG_2(label, h);
 
 #define __KVMTEST(h, n)							\
 	lbz	r10,HSTATE_IN_GUEST(r13);				\
@@ -416,10 +419,10 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
 #endif
 
 /* Do not enable RI */
-#define EXCEPTION_PROLOG_PSERIES_NORI(area, label, h, extra, vec)	\
+#define EXCEPTION_PROLOG_NORI(area, label, h, extra, vec)		\
 	EXCEPTION_PROLOG_0(area);					\
 	EXCEPTION_PROLOG_1(area, extra, vec);				\
-	EXCEPTION_PROLOG_PSERIES_1_NORI(label, h);
+	EXCEPTION_PROLOG_2_NORI(label, h);
 
 
 #define __KVM_HANDLER(area, h, n)					\
@@ -550,10 +553,8 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
 /*
  * Exception vectors.
  */
-#define STD_EXCEPTION_PSERIES(vec, label)			\
-	SET_SCRATCH0(r13);		/* save r13 */		\
-	EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, label,		\
-				 EXC_STD, KVMTEST_PR, vec);	\
+#define STD_EXCEPTION(vec, label)				\
+	EXCEPTION_PROLOG(PACA_EXGEN, label, EXC_STD, KVMTEST_PR, vec);
 
 /* Version of above for when we have to branch out-of-line */
 #define __OOL_EXCEPTION(vec, label, hdlr)			\
@@ -561,36 +562,31 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
 	EXCEPTION_PROLOG_0(PACA_EXGEN)				\
 	b hdlr;
 
-#define STD_EXCEPTION_PSERIES_OOL(vec, label)			\
+#define STD_EXCEPTION_OOL(vec, label)				\
 	EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_PR, vec);	\
-	EXCEPTION_PROLOG_PSERIES_1(label, EXC_STD)
+	EXCEPTION_PROLOG_2(label, EXC_STD)
 
 #define STD_EXCEPTION_HV(loc, vec, label)			\
-	SET_SCRATCH0(r13);	/* save r13 */			\
-	EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, label,		\
-				 EXC_HV, KVMTEST_HV, vec);
+	EXCEPTION_PROLOG(PACA_EXGEN, label, EXC_HV, KVMTEST_HV, vec);
 
 #define STD_EXCEPTION_HV_OOL(vec, label)			\
 	EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_HV, vec);	\
-	EXCEPTION_PROLOG_PSERIES_1(label, EXC_HV)
+	EXCEPTION_PROLOG_2(label, EXC_HV)
 
-#define STD_RELON_EXCEPTION_PSERIES(loc, vec, label)	\
+#define STD_RELON_EXCEPTION(loc, vec, label)		\
 	/* No guest interrupts come through here */	\
-	SET_SCRATCH0(r13);		/* save r13 */	\
-	EXCEPTION_RELON_PROLOG_PSERIES(PACA_EXGEN, label, EXC_STD, NOTEST, vec);
+	EXCEPTION_RELON_PROLOG(PACA_EXGEN, label, EXC_STD, NOTEST, vec);
 
-#define STD_RELON_EXCEPTION_PSERIES_OOL(vec, label)		\
+#define STD_RELON_EXCEPTION_OOL(vec, label)			\
 	EXCEPTION_PROLOG_1(PACA_EXGEN, NOTEST, vec);		\
-	EXCEPTION_RELON_PROLOG_PSERIES_1(label, EXC_STD)
+	EXCEPTION_PROLOG_2_RELON(label, EXC_STD)
 
 #define STD_RELON_EXCEPTION_HV(loc, vec, label)		\
-	SET_SCRATCH0(r13);	/* save r13 */		\
-	EXCEPTION_RELON_PROLOG_PSERIES(PACA_EXGEN, label,	\
-				       EXC_HV, KVMTEST_HV, vec);
+	EXCEPTION_RELON_PROLOG(PACA_EXGEN, label, EXC_HV, KVMTEST_HV, vec);
 
 #define STD_RELON_EXCEPTION_HV_OOL(vec, label)			\
 	EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_HV, vec);	\
-	EXCEPTION_RELON_PROLOG_PSERIES_1(label, EXC_HV)
+	EXCEPTION_PROLOG_2_RELON(label, EXC_HV)
 
 /* This associate vector numbers with bits in paca->irq_happened */
 #define SOFTEN_VALUE_0x500	PACA_IRQ_EE
@@ -627,55 +623,45 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
 #define SOFTEN_NOTEST_PR(vec, bitmask)	_SOFTEN_TEST(EXC_STD, vec, bitmask)
 #define SOFTEN_NOTEST_HV(vec, bitmask)	_SOFTEN_TEST(EXC_HV, vec, bitmask)
 
-#define __MASKABLE_EXCEPTION_PSERIES(vec, label, h, extra, bitmask)	\
+#define __MASKABLE_EXCEPTION(vec, label, h, extra, bitmask)		\
 	SET_SCRATCH0(r13);    /* save r13 */				\
 	EXCEPTION_PROLOG_0(PACA_EXGEN);					\
 	MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, extra, vec, bitmask);	\
-	EXCEPTION_PROLOG_PSERIES_1(label, h);
+	EXCEPTION_PROLOG_2(label, h);
 
-#define _MASKABLE_EXCEPTION_PSERIES(vec, label, h, extra, bitmask)	\
-	__MASKABLE_EXCEPTION_PSERIES(vec, label, h, extra, bitmask)
+#define MASKABLE_EXCEPTION(vec, label, bitmask)				\
+	__MASKABLE_EXCEPTION(vec, label, EXC_STD, SOFTEN_TEST_PR, bitmask)
 
-#define MASKABLE_EXCEPTION_PSERIES(loc, vec, label, bitmask)		\
-	_MASKABLE_EXCEPTION_PSERIES(vec, label,				\
-				    EXC_STD, SOFTEN_TEST_PR, bitmask)
-
-#define MASKABLE_EXCEPTION_PSERIES_OOL(vec, label, bitmask)		\
+#define MASKABLE_EXCEPTION_OOL(vec, label, bitmask)			\
 	MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_TEST_PR, vec, bitmask);\
-	EXCEPTION_PROLOG_PSERIES_1(label, EXC_STD)
+	EXCEPTION_PROLOG_2(label, EXC_STD)
 
-#define MASKABLE_EXCEPTION_HV(loc, vec, label, bitmask)			\
-	_MASKABLE_EXCEPTION_PSERIES(vec, label,				\
-				    EXC_HV, SOFTEN_TEST_HV, bitmask)
+#define MASKABLE_EXCEPTION_HV(vec, label, bitmask)			\
+	__MASKABLE_EXCEPTION(vec, label, EXC_HV, SOFTEN_TEST_HV, bitmask)
 
 #define MASKABLE_EXCEPTION_HV_OOL(vec, label, bitmask)			\
 	MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_TEST_HV, vec, bitmask);\
-	EXCEPTION_PROLOG_PSERIES_1(label, EXC_HV)
+	EXCEPTION_PROLOG_2(label, EXC_HV)
 
-#define __MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, h, extra, bitmask) \
+#define __MASKABLE_RELON_EXCEPTION(vec, label, h, extra, bitmask)	\
 	SET_SCRATCH0(r13);    /* save r13 */				\
 	EXCEPTION_PROLOG_0(PACA_EXGEN);					\
 	MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, extra, vec, bitmask);	\
-	EXCEPTION_RELON_PROLOG_PSERIES_1(label, h)
-
-#define _MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, h, extra, bitmask)\
-	__MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, h, extra, bitmask)
+	EXCEPTION_PROLOG_2_RELON(label, h)
 
-#define MASKABLE_RELON_EXCEPTION_PSERIES(loc, vec, label, bitmask)	\
-	_MASKABLE_RELON_EXCEPTION_PSERIES(vec, label,			\
-					  EXC_STD, SOFTEN_NOTEST_PR, bitmask)
+#define MASKABLE_RELON_EXCEPTION(vec, label, bitmask)			\
+	__MASKABLE_RELON_EXCEPTION(vec, label, EXC_STD, SOFTEN_NOTEST_PR, bitmask)
 
-#define MASKABLE_RELON_EXCEPTION_PSERIES_OOL(vec, label, bitmask)	\
+#define MASKABLE_RELON_EXCEPTION_OOL(vec, label, bitmask)		\
 	MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_NOTEST_PR, vec, bitmask);\
-	EXCEPTION_PROLOG_PSERIES_1(label, EXC_STD);
+	EXCEPTION_PROLOG_2(label, EXC_STD);
 
-#define MASKABLE_RELON_EXCEPTION_HV(loc, vec, label, bitmask)		\
-	_MASKABLE_RELON_EXCEPTION_PSERIES(vec, label,			\
-					  EXC_HV, SOFTEN_TEST_HV, bitmask)
+#define MASKABLE_RELON_EXCEPTION_HV(vec, label, bitmask)		\
+	__MASKABLE_RELON_EXCEPTION(vec, label, EXC_HV, SOFTEN_TEST_HV, bitmask)
 
 #define MASKABLE_RELON_EXCEPTION_HV_OOL(vec, label, bitmask)		\
 	MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_TEST_HV, vec, bitmask);\
-	EXCEPTION_RELON_PROLOG_PSERIES_1(label, EXC_HV)
+	EXCEPTION_PROLOG_2_RELON(label, EXC_HV)
 
 /*
  * Our exception common code can be passed various "additions"