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-rw-r--r--include/asm-x86/paravirt.h1650
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diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h
deleted file mode 100644
index 8d6ae2f760d0..000000000000
--- a/include/asm-x86/paravirt.h
+++ /dev/null
@@ -1,1650 +0,0 @@
-#ifndef ASM_X86__PARAVIRT_H
-#define ASM_X86__PARAVIRT_H
-/* Various instructions on x86 need to be replaced for
- * para-virtualization: those hooks are defined here. */
-
-#ifdef CONFIG_PARAVIRT
-#include <asm/page.h>
-#include <asm/asm.h>
-
-/* Bitmask of what can be clobbered: usually at least eax. */
-#define CLBR_NONE 0
-#define CLBR_EAX (1 << 0)
-#define CLBR_ECX (1 << 1)
-#define CLBR_EDX (1 << 2)
-
-#ifdef CONFIG_X86_64
-#define CLBR_RSI (1 << 3)
-#define CLBR_RDI (1 << 4)
-#define CLBR_R8 (1 << 5)
-#define CLBR_R9 (1 << 6)
-#define CLBR_R10 (1 << 7)
-#define CLBR_R11 (1 << 8)
-#define CLBR_ANY ((1 << 9) - 1)
-#include <asm/desc_defs.h>
-#else
-/* CLBR_ANY should match all regs platform has. For i386, that's just it */
-#define CLBR_ANY ((1 << 3) - 1)
-#endif /* X86_64 */
-
-#ifndef __ASSEMBLY__
-#include <linux/types.h>
-#include <linux/cpumask.h>
-#include <asm/kmap_types.h>
-#include <asm/desc_defs.h>
-
-struct page;
-struct thread_struct;
-struct desc_ptr;
-struct tss_struct;
-struct mm_struct;
-struct desc_struct;
-
-/* general info */
-struct pv_info {
- unsigned int kernel_rpl;
- int shared_kernel_pmd;
- int paravirt_enabled;
- const char *name;
-};
-
-struct pv_init_ops {
- /*
- * Patch may replace one of the defined code sequences with
- * arbitrary code, subject to the same register constraints.
- * This generally means the code is not free to clobber any
- * registers other than EAX. The patch function should return
- * the number of bytes of code generated, as we nop pad the
- * rest in generic code.
- */
- unsigned (*patch)(u8 type, u16 clobber, void *insnbuf,
- unsigned long addr, unsigned len);
-
- /* Basic arch-specific setup */
- void (*arch_setup)(void);
- char *(*memory_setup)(void);
- void (*post_allocator_init)(void);
-
- /* Print a banner to identify the environment */
- void (*banner)(void);
-};
-
-
-struct pv_lazy_ops {
- /* Set deferred update mode, used for batching operations. */
- void (*enter)(void);
- void (*leave)(void);
-};
-
-struct pv_time_ops {
- void (*time_init)(void);
-
- /* Set and set time of day */
- unsigned long (*get_wallclock)(void);
- int (*set_wallclock)(unsigned long);
-
- unsigned long long (*sched_clock)(void);
- unsigned long (*get_tsc_khz)(void);
-};
-
-struct pv_cpu_ops {
- /* hooks for various privileged instructions */
- unsigned long (*get_debugreg)(int regno);
- void (*set_debugreg)(int regno, unsigned long value);
-
- void (*clts)(void);
-
- unsigned long (*read_cr0)(void);
- void (*write_cr0)(unsigned long);
-
- unsigned long (*read_cr4_safe)(void);
- unsigned long (*read_cr4)(void);
- void (*write_cr4)(unsigned long);
-
-#ifdef CONFIG_X86_64
- unsigned long (*read_cr8)(void);
- void (*write_cr8)(unsigned long);
-#endif
-
- /* Segment descriptor handling */
- void (*load_tr_desc)(void);
- void (*load_gdt)(const struct desc_ptr *);
- void (*load_idt)(const struct desc_ptr *);
- void (*store_gdt)(struct desc_ptr *);
- void (*store_idt)(struct desc_ptr *);
- void (*set_ldt)(const void *desc, unsigned entries);
- unsigned long (*store_tr)(void);
- void (*load_tls)(struct thread_struct *t, unsigned int cpu);
-#ifdef CONFIG_X86_64
- void (*load_gs_index)(unsigned int idx);
-#endif
- void (*write_ldt_entry)(struct desc_struct *ldt, int entrynum,
- const void *desc);
- void (*write_gdt_entry)(struct desc_struct *,
- int entrynum, const void *desc, int size);
- void (*write_idt_entry)(gate_desc *,
- int entrynum, const gate_desc *gate);
- void (*alloc_ldt)(struct desc_struct *ldt, unsigned entries);
- void (*free_ldt)(struct desc_struct *ldt, unsigned entries);
-
- void (*load_sp0)(struct tss_struct *tss, struct thread_struct *t);
-
- void (*set_iopl_mask)(unsigned mask);
-
- void (*wbinvd)(void);
- void (*io_delay)(void);
-
- /* cpuid emulation, mostly so that caps bits can be disabled */
- void (*cpuid)(unsigned int *eax, unsigned int *ebx,
- unsigned int *ecx, unsigned int *edx);
-
- /* MSR, PMC and TSR operations.
- err = 0/-EFAULT. wrmsr returns 0/-EFAULT. */
- u64 (*read_msr_amd)(unsigned int msr, int *err);
- u64 (*read_msr)(unsigned int msr, int *err);
- int (*write_msr)(unsigned int msr, unsigned low, unsigned high);
-
- u64 (*read_tsc)(void);
- u64 (*read_pmc)(int counter);
- unsigned long long (*read_tscp)(unsigned int *aux);
-
- /*
- * Atomically enable interrupts and return to userspace. This
- * is only ever used to return to 32-bit processes; in a
- * 64-bit kernel, it's used for 32-on-64 compat processes, but
- * never native 64-bit processes. (Jump, not call.)
- */
- void (*irq_enable_sysexit)(void);
-
- /*
- * Switch to usermode gs and return to 64-bit usermode using
- * sysret. Only used in 64-bit kernels to return to 64-bit
- * processes. Usermode register state, including %rsp, must
- * already be restored.
- */
- void (*usergs_sysret64)(void);
-
- /*
- * Switch to usermode gs and return to 32-bit usermode using
- * sysret. Used to return to 32-on-64 compat processes.
- * Other usermode register state, including %esp, must already
- * be restored.
- */
- void (*usergs_sysret32)(void);
-
- /* Normal iret. Jump to this with the standard iret stack
- frame set up. */
- void (*iret)(void);
-
- void (*swapgs)(void);
-
- struct pv_lazy_ops lazy_mode;
-};
-
-struct pv_irq_ops {
- void (*init_IRQ)(void);
-
- /*
- * Get/set interrupt state. save_fl and restore_fl are only
- * expected to use X86_EFLAGS_IF; all other bits
- * returned from save_fl are undefined, and may be ignored by
- * restore_fl.
- */
- unsigned long (*save_fl)(void);
- void (*restore_fl)(unsigned long);
- void (*irq_disable)(void);
- void (*irq_enable)(void);
- void (*safe_halt)(void);
- void (*halt)(void);
-
-#ifdef CONFIG_X86_64
- void (*adjust_exception_frame)(void);
-#endif
-};
-
-struct pv_apic_ops {
-#ifdef CONFIG_X86_LOCAL_APIC
- void (*setup_boot_clock)(void);
- void (*setup_secondary_clock)(void);
-
- void (*startup_ipi_hook)(int phys_apicid,
- unsigned long start_eip,
- unsigned long start_esp);
-#endif
-};
-
-struct pv_mmu_ops {
- /*
- * Called before/after init_mm pagetable setup. setup_start
- * may reset %cr3, and may pre-install parts of the pagetable;
- * pagetable setup is expected to preserve any existing
- * mapping.
- */
- void (*pagetable_setup_start)(pgd_t *pgd_base);
- void (*pagetable_setup_done)(pgd_t *pgd_base);
-
- unsigned long (*read_cr2)(void);
- void (*write_cr2)(unsigned long);
-
- unsigned long (*read_cr3)(void);
- void (*write_cr3)(unsigned long);
-
- /*
- * Hooks for intercepting the creation/use/destruction of an
- * mm_struct.
- */
- void (*activate_mm)(struct mm_struct *prev,
- struct mm_struct *next);
- void (*dup_mmap)(struct mm_struct *oldmm,
- struct mm_struct *mm);
- void (*exit_mmap)(struct mm_struct *mm);
-
-
- /* TLB operations */
- void (*flush_tlb_user)(void);
- void (*flush_tlb_kernel)(void);
- void (*flush_tlb_single)(unsigned long addr);
- void (*flush_tlb_others)(const cpumask_t *cpus, struct mm_struct *mm,
- unsigned long va);
-
- /* Hooks for allocating and freeing a pagetable top-level */
- int (*pgd_alloc)(struct mm_struct *mm);
- void (*pgd_free)(struct mm_struct *mm, pgd_t *pgd);
-
- /*
- * Hooks for allocating/releasing pagetable pages when they're
- * attached to a pagetable
- */
- void (*alloc_pte)(struct mm_struct *mm, unsigned long pfn);
- void (*alloc_pmd)(struct mm_struct *mm, unsigned long pfn);
- void (*alloc_pmd_clone)(unsigned long pfn, unsigned long clonepfn, unsigned long start, unsigned long count);
- void (*alloc_pud)(struct mm_struct *mm, unsigned long pfn);
- void (*release_pte)(unsigned long pfn);
- void (*release_pmd)(unsigned long pfn);
- void (*release_pud)(unsigned long pfn);
-
- /* Pagetable manipulation functions */
- void (*set_pte)(pte_t *ptep, pte_t pteval);
- void (*set_pte_at)(struct mm_struct *mm, unsigned long addr,
- pte_t *ptep, pte_t pteval);
- void (*set_pmd)(pmd_t *pmdp, pmd_t pmdval);
- void (*pte_update)(struct mm_struct *mm, unsigned long addr,
- pte_t *ptep);
- void (*pte_update_defer)(struct mm_struct *mm,
- unsigned long addr, pte_t *ptep);
-
- pte_t (*ptep_modify_prot_start)(struct mm_struct *mm, unsigned long addr,
- pte_t *ptep);
- void (*ptep_modify_prot_commit)(struct mm_struct *mm, unsigned long addr,
- pte_t *ptep, pte_t pte);
-
- pteval_t (*pte_val)(pte_t);
- pteval_t (*pte_flags)(pte_t);
- pte_t (*make_pte)(pteval_t pte);
-
- pgdval_t (*pgd_val)(pgd_t);
- pgd_t (*make_pgd)(pgdval_t pgd);
-
-#if PAGETABLE_LEVELS >= 3
-#ifdef CONFIG_X86_PAE
- void (*set_pte_atomic)(pte_t *ptep, pte_t pteval);
- void (*set_pte_present)(struct mm_struct *mm, unsigned long addr,
- pte_t *ptep, pte_t pte);
- void (*pte_clear)(struct mm_struct *mm, unsigned long addr,
- pte_t *ptep);
- void (*pmd_clear)(pmd_t *pmdp);
-
-#endif /* CONFIG_X86_PAE */
-
- void (*set_pud)(pud_t *pudp, pud_t pudval);
-
- pmdval_t (*pmd_val)(pmd_t);
- pmd_t (*make_pmd)(pmdval_t pmd);
-
-#if PAGETABLE_LEVELS == 4
- pudval_t (*pud_val)(pud_t);
- pud_t (*make_pud)(pudval_t pud);
-
- void (*set_pgd)(pgd_t *pudp, pgd_t pgdval);
-#endif /* PAGETABLE_LEVELS == 4 */
-#endif /* PAGETABLE_LEVELS >= 3 */
-
-#ifdef CONFIG_HIGHPTE
- void *(*kmap_atomic_pte)(struct page *page, enum km_type type);
-#endif
-
- struct pv_lazy_ops lazy_mode;
-
- /* dom0 ops */
-
- /* Sometimes the physical address is a pfn, and sometimes its
- an mfn. We can tell which is which from the index. */
- void (*set_fixmap)(unsigned /* enum fixed_addresses */ idx,
- unsigned long phys, pgprot_t flags);
-};
-
-struct raw_spinlock;
-struct pv_lock_ops {
- int (*spin_is_locked)(struct raw_spinlock *lock);
- int (*spin_is_contended)(struct raw_spinlock *lock);
- void (*spin_lock)(struct raw_spinlock *lock);
- void (*spin_lock_flags)(struct raw_spinlock *lock, unsigned long flags);
- int (*spin_trylock)(struct raw_spinlock *lock);
- void (*spin_unlock)(struct raw_spinlock *lock);
-};
-
-/* This contains all the paravirt structures: we get a convenient
- * number for each function using the offset which we use to indicate
- * what to patch. */
-struct paravirt_patch_template {
- struct pv_init_ops pv_init_ops;
- struct pv_time_ops pv_time_ops;
- struct pv_cpu_ops pv_cpu_ops;
- struct pv_irq_ops pv_irq_ops;
- struct pv_apic_ops pv_apic_ops;
- struct pv_mmu_ops pv_mmu_ops;
- struct pv_lock_ops pv_lock_ops;
-};
-
-extern struct pv_info pv_info;
-extern struct pv_init_ops pv_init_ops;
-extern struct pv_time_ops pv_time_ops;
-extern struct pv_cpu_ops pv_cpu_ops;
-extern struct pv_irq_ops pv_irq_ops;
-extern struct pv_apic_ops pv_apic_ops;
-extern struct pv_mmu_ops pv_mmu_ops;
-extern struct pv_lock_ops pv_lock_ops;
-
-#define PARAVIRT_PATCH(x) \
- (offsetof(struct paravirt_patch_template, x) / sizeof(void *))
-
-#define paravirt_type(op) \
- [paravirt_typenum] "i" (PARAVIRT_PATCH(op)), \
- [paravirt_opptr] "m" (op)
-#define paravirt_clobber(clobber) \
- [paravirt_clobber] "i" (clobber)
-
-/*
- * Generate some code, and mark it as patchable by the
- * apply_paravirt() alternate instruction patcher.
- */
-#define _paravirt_alt(insn_string, type, clobber) \
- "771:\n\t" insn_string "\n" "772:\n" \
- ".pushsection .parainstructions,\"a\"\n" \
- _ASM_ALIGN "\n" \
- _ASM_PTR " 771b\n" \
- " .byte " type "\n" \
- " .byte 772b-771b\n" \
- " .short " clobber "\n" \
- ".popsection\n"
-
-/* Generate patchable code, with the default asm parameters. */
-#define paravirt_alt(insn_string) \
- _paravirt_alt(insn_string, "%c[paravirt_typenum]", "%c[paravirt_clobber]")
-
-/* Simple instruction patching code. */
-#define DEF_NATIVE(ops, name, code) \
- extern const char start_##ops##_##name[], end_##ops##_##name[]; \
- asm("start_" #ops "_" #name ": " code "; end_" #ops "_" #name ":")
-
-unsigned paravirt_patch_nop(void);
-unsigned paravirt_patch_ignore(unsigned len);
-unsigned paravirt_patch_call(void *insnbuf,
- const void *target, u16 tgt_clobbers,
- unsigned long addr, u16 site_clobbers,
- unsigned len);
-unsigned paravirt_patch_jmp(void *insnbuf, const void *target,
- unsigned long addr, unsigned len);
-unsigned paravirt_patch_default(u8 type, u16 clobbers, void *insnbuf,
- unsigned long addr, unsigned len);
-
-unsigned paravirt_patch_insns(void *insnbuf, unsigned len,
- const char *start, const char *end);
-
-unsigned native_patch(u8 type, u16 clobbers, void *ibuf,
- unsigned long addr, unsigned len);
-
-int paravirt_disable_iospace(void);
-
-/*
- * This generates an indirect call based on the operation type number.
- * The type number, computed in PARAVIRT_PATCH, is derived from the
- * offset into the paravirt_patch_template structure, and can therefore be
- * freely converted back into a structure offset.
- */
-#define PARAVIRT_CALL "call *%[paravirt_opptr];"
-
-/*
- * These macros are intended to wrap calls through one of the paravirt
- * ops structs, so that they can be later identified and patched at
- * runtime.
- *
- * Normally, a call to a pv_op function is a simple indirect call:
- * (pv_op_struct.operations)(args...).
- *
- * Unfortunately, this is a relatively slow operation for modern CPUs,
- * because it cannot necessarily determine what the destination
- * address is. In this case, the address is a runtime constant, so at
- * the very least we can patch the call to e a simple direct call, or
- * ideally, patch an inline implementation into the callsite. (Direct
- * calls are essentially free, because the call and return addresses
- * are completely predictable.)
- *
- * For i386, these macros rely on the standard gcc "regparm(3)" calling
- * convention, in which the first three arguments are placed in %eax,
- * %edx, %ecx (in that order), and the remaining arguments are placed
- * on the stack. All caller-save registers (eax,edx,ecx) are expected
- * to be modified (either clobbered or used for return values).
- * X86_64, on the other hand, already specifies a register-based calling
- * conventions, returning at %rax, with parameteres going on %rdi, %rsi,
- * %rdx, and %rcx. Note that for this reason, x86_64 does not need any
- * special handling for dealing with 4 arguments, unlike i386.
- * However, x86_64 also have to clobber all caller saved registers, which
- * unfortunately, are quite a bit (r8 - r11)
- *
- * The call instruction itself is marked by placing its start address
- * and size into the .parainstructions section, so that
- * apply_paravirt() in arch/i386/kernel/alternative.c can do the
- * appropriate patching under the control of the backend pv_init_ops
- * implementation.
- *
- * Unfortunately there's no way to get gcc to generate the args setup
- * for the call, and then allow the call itself to be generated by an
- * inline asm. Because of this, we must do the complete arg setup and
- * return value handling from within these macros. This is fairly
- * cumbersome.
- *
- * There are 5 sets of PVOP_* macros for dealing with 0-4 arguments.
- * It could be extended to more arguments, but there would be little
- * to be gained from that. For each number of arguments, there are
- * the two VCALL and CALL variants for void and non-void functions.
- *
- * When there is a return value, the invoker of the macro must specify
- * the return type. The macro then uses sizeof() on that type to
- * determine whether its a 32 or 64 bit value, and places the return
- * in the right register(s) (just %eax for 32-bit, and %edx:%eax for
- * 64-bit). For x86_64 machines, it just returns at %rax regardless of
- * the return value size.
- *
- * 64-bit arguments are passed as a pair of adjacent 32-bit arguments
- * i386 also passes 64-bit arguments as a pair of adjacent 32-bit arguments
- * in low,high order
- *
- * Small structures are passed and returned in registers. The macro
- * calling convention can't directly deal with this, so the wrapper
- * functions must do this.
- *
- * These PVOP_* macros are only defined within this header. This
- * means that all uses must be wrapped in inline functions. This also
- * makes sure the incoming and outgoing types are always correct.
- */
-#ifdef CONFIG_X86_32
-#define PVOP_VCALL_ARGS unsigned long __eax, __edx, __ecx
-#define PVOP_CALL_ARGS PVOP_VCALL_ARGS
-#define PVOP_VCALL_CLOBBERS "=a" (__eax), "=d" (__edx), \
- "=c" (__ecx)
-#define PVOP_CALL_CLOBBERS PVOP_VCALL_CLOBBERS
-#define EXTRA_CLOBBERS
-#define VEXTRA_CLOBBERS
-#else
-#define PVOP_VCALL_ARGS unsigned long __edi, __esi, __edx, __ecx
-#define PVOP_CALL_ARGS PVOP_VCALL_ARGS, __eax
-#define PVOP_VCALL_CLOBBERS "=D" (__edi), \
- "=S" (__esi), "=d" (__edx), \
- "=c" (__ecx)
-
-#define PVOP_CALL_CLOBBERS PVOP_VCALL_CLOBBERS, "=a" (__eax)
-
-#define EXTRA_CLOBBERS , "r8", "r9", "r10", "r11"
-#define VEXTRA_CLOBBERS , "rax", "r8", "r9", "r10", "r11"
-#endif
-
-#ifdef CONFIG_PARAVIRT_DEBUG
-#define PVOP_TEST_NULL(op) BUG_ON(op == NULL)
-#else
-#define PVOP_TEST_NULL(op) ((void)op)
-#endif
-
-#define __PVOP_CALL(rettype, op, pre, post, ...) \
- ({ \
- rettype __ret; \
- PVOP_CALL_ARGS; \
- PVOP_TEST_NULL(op); \
- /* This is 32-bit specific, but is okay in 64-bit */ \
- /* since this condition will never hold */ \
- if (sizeof(rettype) > sizeof(unsigned long)) { \
- asm volatile(pre \
- paravirt_alt(PARAVIRT_CALL) \
- post \
- : PVOP_CALL_CLOBBERS \
- : paravirt_type(op), \
- paravirt_clobber(CLBR_ANY), \
- ##__VA_ARGS__ \
- : "memory", "cc" EXTRA_CLOBBERS); \
- __ret = (rettype)((((u64)__edx) << 32) | __eax); \
- } else { \
- asm volatile(pre \
- paravirt_alt(PARAVIRT_CALL) \
- post \
- : PVOP_CALL_CLOBBERS \
- : paravirt_type(op), \
- paravirt_clobber(CLBR_ANY), \
- ##__VA_ARGS__ \
- : "memory", "cc" EXTRA_CLOBBERS); \
- __ret = (rettype)__eax; \
- } \
- __ret; \
- })
-#define __PVOP_VCALL(op, pre, post, ...) \
- ({ \
- PVOP_VCALL_ARGS; \
- PVOP_TEST_NULL(op); \
- asm volatile(pre \
- paravirt_alt(PARAVIRT_CALL) \
- post \
- : PVOP_VCALL_CLOBBERS \
- : paravirt_type(op), \
- paravirt_clobber(CLBR_ANY), \
- ##__VA_ARGS__ \
- : "memory", "cc" VEXTRA_CLOBBERS); \
- })
-
-#define PVOP_CALL0(rettype, op) \
- __PVOP_CALL(rettype, op, "", "")
-#define PVOP_VCALL0(op) \
- __PVOP_VCALL(op, "", "")
-
-#define PVOP_CALL1(rettype, op, arg1) \
- __PVOP_CALL(rettype, op, "", "", "0" ((unsigned long)(arg1)))
-#define PVOP_VCALL1(op, arg1) \
- __PVOP_VCALL(op, "", "", "0" ((unsigned long)(arg1)))
-
-#define PVOP_CALL2(rettype, op, arg1, arg2) \
- __PVOP_CALL(rettype, op, "", "", "0" ((unsigned long)(arg1)), \
- "1" ((unsigned long)(arg2)))
-#define PVOP_VCALL2(op, arg1, arg2) \
- __PVOP_VCALL(op, "", "", "0" ((unsigned long)(arg1)), \
- "1" ((unsigned long)(arg2)))
-
-#define PVOP_CALL3(rettype, op, arg1, arg2, arg3) \
- __PVOP_CALL(rettype, op, "", "", "0" ((unsigned long)(arg1)), \
- "1"((unsigned long)(arg2)), "2"((unsigned long)(arg3)))
-#define PVOP_VCALL3(op, arg1, arg2, arg3) \
- __PVOP_VCALL(op, "", "", "0" ((unsigned long)(arg1)), \
- "1"((unsigned long)(arg2)), "2"((unsigned long)(arg3)))
-
-/* This is the only difference in x86_64. We can make it much simpler */
-#ifdef CONFIG_X86_32
-#define PVOP_CALL4(rettype, op, arg1, arg2, arg3, arg4) \
- __PVOP_CALL(rettype, op, \
- "push %[_arg4];", "lea 4(%%esp),%%esp;", \
- "0" ((u32)(arg1)), "1" ((u32)(arg2)), \
- "2" ((u32)(arg3)), [_arg4] "mr" ((u32)(arg4)))
-#define PVOP_VCALL4(op, arg1, arg2, arg3, arg4) \
- __PVOP_VCALL(op, \
- "push %[_arg4];", "lea 4(%%esp),%%esp;", \
- "0" ((u32)(arg1)), "1" ((u32)(arg2)), \
- "2" ((u32)(arg3)), [_arg4] "mr" ((u32)(arg4)))
-#else
-#define PVOP_CALL4(rettype, op, arg1, arg2, arg3, arg4) \
- __PVOP_CALL(rettype, op, "", "", "0" ((unsigned long)(arg1)), \
- "1"((unsigned long)(arg2)), "2"((unsigned long)(arg3)), \
- "3"((unsigned long)(arg4)))
-#define PVOP_VCALL4(op, arg1, arg2, arg3, arg4) \
- __PVOP_VCALL(op, "", "", "0" ((unsigned long)(arg1)), \
- "1"((unsigned long)(arg2)), "2"((unsigned long)(arg3)), \
- "3"((unsigned long)(arg4)))
-#endif
-
-static inline int paravirt_enabled(void)
-{
- return pv_info.paravirt_enabled;
-}
-
-static inline void load_sp0(struct tss_struct *tss,
- struct thread_struct *thread)
-{
- PVOP_VCALL2(pv_cpu_ops.load_sp0, tss, thread);
-}
-
-#define ARCH_SETUP pv_init_ops.arch_setup();
-static inline unsigned long get_wallclock(void)
-{
- return PVOP_CALL0(unsigned long, pv_time_ops.get_wallclock);
-}
-
-static inline int set_wallclock(unsigned long nowtime)
-{
- return PVOP_CALL1(int, pv_time_ops.set_wallclock, nowtime);
-}
-
-static inline void (*choose_time_init(void))(void)
-{
- return pv_time_ops.time_init;
-}
-
-/* The paravirtualized CPUID instruction. */
-static inline void __cpuid(unsigned int *eax, unsigned int *ebx,
- unsigned int *ecx, unsigned int *edx)
-{
- PVOP_VCALL4(pv_cpu_ops.cpuid, eax, ebx, ecx, edx);
-}
-
-/*
- * These special macros can be used to get or set a debugging register
- */
-static inline unsigned long paravirt_get_debugreg(int reg)
-{
- return PVOP_CALL1(unsigned long, pv_cpu_ops.get_debugreg, reg);
-}
-#define get_debugreg(var, reg) var = paravirt_get_debugreg(reg)
-static inline void set_debugreg(unsigned long val, int reg)
-{
- PVOP_VCALL2(pv_cpu_ops.set_debugreg, reg, val);
-}
-
-static inline void clts(void)
-{
- PVOP_VCALL0(pv_cpu_ops.clts);
-}
-
-static inline unsigned long read_cr0(void)
-{
- return PVOP_CALL0(unsigned long, pv_cpu_ops.read_cr0);
-}
-
-static inline void write_cr0(unsigned long x)
-{
- PVOP_VCALL1(pv_cpu_ops.write_cr0, x);
-}
-
-static inline unsigned long read_cr2(void)
-{
- return PVOP_CALL0(unsigned long, pv_mmu_ops.read_cr2);
-}
-
-static inline void write_cr2(unsigned long x)
-{
- PVOP_VCALL1(pv_mmu_ops.write_cr2, x);
-}
-
-static inline unsigned long read_cr3(void)
-{
- return PVOP_CALL0(unsigned long, pv_mmu_ops.read_cr3);
-}
-
-static inline void write_cr3(unsigned long x)
-{
- PVOP_VCALL1(pv_mmu_ops.write_cr3, x);
-}
-
-static inline unsigned long read_cr4(void)
-{
- return PVOP_CALL0(unsigned long, pv_cpu_ops.read_cr4);
-}
-static inline unsigned long read_cr4_safe(void)
-{
- return PVOP_CALL0(unsigned long, pv_cpu_ops.read_cr4_safe);
-}
-
-static inline void write_cr4(unsigned long x)
-{
- PVOP_VCALL1(pv_cpu_ops.write_cr4, x);
-}
-
-#ifdef CONFIG_X86_64
-static inline unsigned long read_cr8(void)
-{
- return PVOP_CALL0(unsigned long, pv_cpu_ops.read_cr8);
-}
-
-static inline void write_cr8(unsigned long x)
-{
- PVOP_VCALL1(pv_cpu_ops.write_cr8, x);
-}
-#endif
-
-static inline void raw_safe_halt(void)
-{
- PVOP_VCALL0(pv_irq_ops.safe_halt);
-}
-
-static inline void halt(void)
-{
- PVOP_VCALL0(pv_irq_ops.safe_halt);
-}
-
-static inline void wbinvd(void)
-{
- PVOP_VCALL0(pv_cpu_ops.wbinvd);
-}
-
-#define get_kernel_rpl() (pv_info.kernel_rpl)
-
-static inline u64 paravirt_read_msr(unsigned msr, int *err)
-{
- return PVOP_CALL2(u64, pv_cpu_ops.read_msr, msr, err);
-}
-static inline u64 paravirt_read_msr_amd(unsigned msr, int *err)
-{
- return PVOP_CALL2(u64, pv_cpu_ops.read_msr_amd, msr, err);
-}
-static inline int paravirt_write_msr(unsigned msr, unsigned low, unsigned high)
-{
- return PVOP_CALL3(int, pv_cpu_ops.write_msr, msr, low, high);
-}
-
-/* These should all do BUG_ON(_err), but our headers are too tangled. */
-#define rdmsr(msr, val1, val2) \
-do { \
- int _err; \
- u64 _l = paravirt_read_msr(msr, &_err); \
- val1 = (u32)_l; \
- val2 = _l >> 32; \
-} while (0)
-
-#define wrmsr(msr, val1, val2) \
-do { \
- paravirt_write_msr(msr, val1, val2); \
-} while (0)
-
-#define rdmsrl(msr, val) \
-do { \
- int _err; \
- val = paravirt_read_msr(msr, &_err); \
-} while (0)
-
-#define wrmsrl(msr, val) wrmsr(msr, (u32)((u64)(val)), ((u64)(val))>>32)
-#define wrmsr_safe(msr, a, b) paravirt_write_msr(msr, a, b)
-
-/* rdmsr with exception handling */
-#define rdmsr_safe(msr, a, b) \
-({ \
- int _err; \
- u64 _l = paravirt_read_msr(msr, &_err); \
- (*a) = (u32)_l; \
- (*b) = _l >> 32; \
- _err; \
-})
-
-static inline int rdmsrl_safe(unsigned msr, unsigned long long *p)
-{
- int err;
-
- *p = paravirt_read_msr(msr, &err);
- return err;
-}
-static inline int rdmsrl_amd_safe(unsigned msr, unsigned long long *p)
-{
- int err;
-
- *p = paravirt_read_msr_amd(msr, &err);
- return err;
-}
-
-static inline u64 paravirt_read_tsc(void)
-{
- return PVOP_CALL0(u64, pv_cpu_ops.read_tsc);
-}
-
-#define rdtscl(low) \
-do { \
- u64 _l = paravirt_read_tsc(); \
- low = (int)_l; \
-} while (0)
-
-#define rdtscll(val) (val = paravirt_read_tsc())
-
-static inline unsigned long long paravirt_sched_clock(void)
-{
- return PVOP_CALL0(unsigned long long, pv_time_ops.sched_clock);
-}
-#define calibrate_tsc() (pv_time_ops.get_tsc_khz())
-
-static inline unsigned long long paravirt_read_pmc(int counter)
-{
- return PVOP_CALL1(u64, pv_cpu_ops.read_pmc, counter);
-}
-
-#define rdpmc(counter, low, high) \
-do { \
- u64 _l = paravirt_read_pmc(counter); \
- low = (u32)_l; \
- high = _l >> 32; \
-} while (0)
-
-static inline unsigned long long paravirt_rdtscp(unsigned int *aux)
-{
- return PVOP_CALL1(u64, pv_cpu_ops.read_tscp, aux);
-}
-
-#define rdtscp(low, high, aux) \
-do { \
- int __aux; \
- unsigned long __val = paravirt_rdtscp(&__aux); \
- (low) = (u32)__val; \
- (high) = (u32)(__val >> 32); \
- (aux) = __aux; \
-} while (0)
-
-#define rdtscpll(val, aux) \
-do { \
- unsigned long __aux; \
- val = paravirt_rdtscp(&__aux); \
- (aux) = __aux; \
-} while (0)
-
-static inline void paravirt_alloc_ldt(struct desc_struct *ldt, unsigned entries)
-{
- PVOP_VCALL2(pv_cpu_ops.alloc_ldt, ldt, entries);
-}
-
-static inline void paravirt_free_ldt(struct desc_struct *ldt, unsigned entries)
-{
- PVOP_VCALL2(pv_cpu_ops.free_ldt, ldt, entries);
-}
-
-static inline void load_TR_desc(void)
-{
- PVOP_VCALL0(pv_cpu_ops.load_tr_desc);
-}
-static inline void load_gdt(const struct desc_ptr *dtr)
-{
- PVOP_VCALL1(pv_cpu_ops.load_gdt, dtr);
-}
-static inline void load_idt(const struct desc_ptr *dtr)
-{
- PVOP_VCALL1(pv_cpu_ops.load_idt, dtr);
-}
-static inline void set_ldt(const void *addr, unsigned entries)
-{
- PVOP_VCALL2(pv_cpu_ops.set_ldt, addr, entries);
-}
-static inline void store_gdt(struct desc_ptr *dtr)
-{
- PVOP_VCALL1(pv_cpu_ops.store_gdt, dtr);
-}
-static inline void store_idt(struct desc_ptr *dtr)
-{
- PVOP_VCALL1(pv_cpu_ops.store_idt, dtr);
-}
-static inline unsigned long paravirt_store_tr(void)
-{
- return PVOP_CALL0(unsigned long, pv_cpu_ops.store_tr);
-}
-#define store_tr(tr) ((tr) = paravirt_store_tr())
-static inline void load_TLS(struct thread_struct *t, unsigned cpu)
-{
- PVOP_VCALL2(pv_cpu_ops.load_tls, t, cpu);
-}
-
-#ifdef CONFIG_X86_64
-static inline void load_gs_index(unsigned int gs)
-{
- PVOP_VCALL1(pv_cpu_ops.load_gs_index, gs);
-}
-#endif
-
-static inline void write_ldt_entry(struct desc_struct *dt, int entry,
- const void *desc)
-{
- PVOP_VCALL3(pv_cpu_ops.write_ldt_entry, dt, entry, desc);
-}
-
-static inline void write_gdt_entry(struct desc_struct *dt, int entry,
- void *desc, int type)
-{
- PVOP_VCALL4(pv_cpu_ops.write_gdt_entry, dt, entry, desc, type);
-}
-
-static inline void write_idt_entry(gate_desc *dt, int entry, const gate_desc *g)
-{
- PVOP_VCALL3(pv_cpu_ops.write_idt_entry, dt, entry, g);
-}
-static inline void set_iopl_mask(unsigned mask)
-{
- PVOP_VCALL1(pv_cpu_ops.set_iopl_mask, mask);
-}
-
-/* The paravirtualized I/O functions */
-static inline void slow_down_io(void)
-{
- pv_cpu_ops.io_delay();
-#ifdef REALLY_SLOW_IO
- pv_cpu_ops.io_delay();
- pv_cpu_ops.io_delay();
- pv_cpu_ops.io_delay();
-#endif
-}
-
-#ifdef CONFIG_X86_LOCAL_APIC
-static inline void setup_boot_clock(void)
-{
- PVOP_VCALL0(pv_apic_ops.setup_boot_clock);
-}
-
-static inline void setup_secondary_clock(void)
-{
- PVOP_VCALL0(pv_apic_ops.setup_secondary_clock);
-}
-#endif
-
-static inline void paravirt_post_allocator_init(void)
-{
- if (pv_init_ops.post_allocator_init)
- (*pv_init_ops.post_allocator_init)();
-}
-
-static inline void paravirt_pagetable_setup_start(pgd_t *base)
-{
- (*pv_mmu_ops.pagetable_setup_start)(base);
-}
-
-static inline void paravirt_pagetable_setup_done(pgd_t *base)
-{
- (*pv_mmu_ops.pagetable_setup_done)(base);
-}
-
-#ifdef CONFIG_SMP
-static inline void startup_ipi_hook(int phys_apicid, unsigned long start_eip,
- unsigned long start_esp)
-{
- PVOP_VCALL3(pv_apic_ops.startup_ipi_hook,
- phys_apicid, start_eip, start_esp);
-}
-#endif
-
-static inline void paravirt_activate_mm(struct mm_struct *prev,
- struct mm_struct *next)
-{
- PVOP_VCALL2(pv_mmu_ops.activate_mm, prev, next);
-}
-
-static inline void arch_dup_mmap(struct mm_struct *oldmm,
- struct mm_struct *mm)
-{
- PVOP_VCALL2(pv_mmu_ops.dup_mmap, oldmm, mm);
-}
-
-static inline void arch_exit_mmap(struct mm_struct *mm)
-{
- PVOP_VCALL1(pv_mmu_ops.exit_mmap, mm);
-}
-
-static inline void __flush_tlb(void)
-{
- PVOP_VCALL0(pv_mmu_ops.flush_tlb_user);
-}
-static inline void __flush_tlb_global(void)
-{
- PVOP_VCALL0(pv_mmu_ops.flush_tlb_kernel);
-}
-static inline void __flush_tlb_single(unsigned long addr)
-{
- PVOP_VCALL1(pv_mmu_ops.flush_tlb_single, addr);
-}
-
-static inline void flush_tlb_others(cpumask_t cpumask, struct mm_struct *mm,
- unsigned long va)
-{
- PVOP_VCALL3(pv_mmu_ops.flush_tlb_others, &cpumask, mm, va);
-}
-
-static inline int paravirt_pgd_alloc(struct mm_struct *mm)
-{
- return PVOP_CALL1(int, pv_mmu_ops.pgd_alloc, mm);
-}
-
-static inline void paravirt_pgd_free(struct mm_struct *mm, pgd_t *pgd)
-{
- PVOP_VCALL2(pv_mmu_ops.pgd_free, mm, pgd);
-}
-
-static inline void paravirt_alloc_pte(struct mm_struct *mm, unsigned long pfn)
-{
- PVOP_VCALL2(pv_mmu_ops.alloc_pte, mm, pfn);
-}
-static inline void paravirt_release_pte(unsigned long pfn)
-{
- PVOP_VCALL1(pv_mmu_ops.release_pte, pfn);
-}
-
-static inline void paravirt_alloc_pmd(struct mm_struct *mm, unsigned long pfn)
-{
- PVOP_VCALL2(pv_mmu_ops.alloc_pmd, mm, pfn);
-}
-
-static inline void paravirt_alloc_pmd_clone(unsigned long pfn, unsigned long clonepfn,
- unsigned long start, unsigned long count)
-{
- PVOP_VCALL4(pv_mmu_ops.alloc_pmd_clone, pfn, clonepfn, start, count);
-}
-static inline void paravirt_release_pmd(unsigned long pfn)
-{
- PVOP_VCALL1(pv_mmu_ops.release_pmd, pfn);
-}
-
-static inline void paravirt_alloc_pud(struct mm_struct *mm, unsigned long pfn)
-{
- PVOP_VCALL2(pv_mmu_ops.alloc_pud, mm, pfn);
-}
-static inline void paravirt_release_pud(unsigned long pfn)
-{
- PVOP_VCALL1(pv_mmu_ops.release_pud, pfn);
-}
-
-#ifdef CONFIG_HIGHPTE
-static inline void *kmap_atomic_pte(struct page *page, enum km_type type)
-{
- unsigned long ret;
- ret = PVOP_CALL2(unsigned long, pv_mmu_ops.kmap_atomic_pte, page, type);
- return (void *)ret;
-}
-#endif
-
-static inline void pte_update(struct mm_struct *mm, unsigned long addr,
- pte_t *ptep)
-{
- PVOP_VCALL3(pv_mmu_ops.pte_update, mm, addr, ptep);
-}
-
-static inline void pte_update_defer(struct mm_struct *mm, unsigned long addr,
- pte_t *ptep)
-{
- PVOP_VCALL3(pv_mmu_ops.pte_update_defer, mm, addr, ptep);
-}
-
-static inline pte_t __pte(pteval_t val)
-{
- pteval_t ret;
-
- if (sizeof(pteval_t) > sizeof(long))
- ret = PVOP_CALL2(pteval_t,
- pv_mmu_ops.make_pte,
- val, (u64)val >> 32);
- else
- ret = PVOP_CALL1(pteval_t,
- pv_mmu_ops.make_pte,
- val);
-
- return (pte_t) { .pte = ret };
-}
-
-static inline pteval_t pte_val(pte_t pte)
-{
- pteval_t ret;
-
- if (sizeof(pteval_t) > sizeof(long))
- ret = PVOP_CALL2(pteval_t, pv_mmu_ops.pte_val,
- pte.pte, (u64)pte.pte >> 32);
- else
- ret = PVOP_CALL1(pteval_t, pv_mmu_ops.pte_val,
- pte.pte);
-
- return ret;
-}
-
-static inline pteval_t pte_flags(pte_t pte)
-{
- pteval_t ret;
-
- if (sizeof(pteval_t) > sizeof(long))
- ret = PVOP_CALL2(pteval_t, pv_mmu_ops.pte_flags,
- pte.pte, (u64)pte.pte >> 32);
- else
- ret = PVOP_CALL1(pteval_t, pv_mmu_ops.pte_flags,
- pte.pte);
-
-#ifdef CONFIG_PARAVIRT_DEBUG
- BUG_ON(ret & PTE_PFN_MASK);
-#endif
- return ret;
-}
-
-static inline pgd_t __pgd(pgdval_t val)
-{
- pgdval_t ret;
-
- if (sizeof(pgdval_t) > sizeof(long))
- ret = PVOP_CALL2(pgdval_t, pv_mmu_ops.make_pgd,
- val, (u64)val >> 32);
- else
- ret = PVOP_CALL1(pgdval_t, pv_mmu_ops.make_pgd,
- val);
-
- return (pgd_t) { ret };
-}
-
-static inline pgdval_t pgd_val(pgd_t pgd)
-{
- pgdval_t ret;
-
- if (sizeof(pgdval_t) > sizeof(long))
- ret = PVOP_CALL2(pgdval_t, pv_mmu_ops.pgd_val,
- pgd.pgd, (u64)pgd.pgd >> 32);
- else
- ret = PVOP_CALL1(pgdval_t, pv_mmu_ops.pgd_val,
- pgd.pgd);
-
- return ret;
-}
-
-#define __HAVE_ARCH_PTEP_MODIFY_PROT_TRANSACTION
-static inline pte_t ptep_modify_prot_start(struct mm_struct *mm, unsigned long addr,
- pte_t *ptep)
-{
- pteval_t ret;
-
- ret = PVOP_CALL3(pteval_t, pv_mmu_ops.ptep_modify_prot_start,
- mm, addr, ptep);
-
- return (pte_t) { .pte = ret };
-}
-
-static inline void ptep_modify_prot_commit(struct mm_struct *mm, unsigned long addr,
- pte_t *ptep, pte_t pte)
-{
- if (sizeof(pteval_t) > sizeof(long))
- /* 5 arg words */
- pv_mmu_ops.ptep_modify_prot_commit(mm, addr, ptep, pte);
- else
- PVOP_VCALL4(pv_mmu_ops.ptep_modify_prot_commit,
- mm, addr, ptep, pte.pte);
-}
-
-static inline void set_pte(pte_t *ptep, pte_t pte)
-{
- if (sizeof(pteval_t) > sizeof(long))
- PVOP_VCALL3(pv_mmu_ops.set_pte, ptep,
- pte.pte, (u64)pte.pte >> 32);
- else
- PVOP_VCALL2(pv_mmu_ops.set_pte, ptep,
- pte.pte);
-}
-
-static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
- pte_t *ptep, pte_t pte)
-{
- if (sizeof(pteval_t) > sizeof(long))
- /* 5 arg words */
- pv_mmu_ops.set_pte_at(mm, addr, ptep, pte);
- else
- PVOP_VCALL4(pv_mmu_ops.set_pte_at, mm, addr, ptep, pte.pte);
-}
-
-static inline void set_pmd(pmd_t *pmdp, pmd_t pmd)
-{
- pmdval_t val = native_pmd_val(pmd);
-
- if (sizeof(pmdval_t) > sizeof(long))
- PVOP_VCALL3(pv_mmu_ops.set_pmd, pmdp, val, (u64)val >> 32);
- else
- PVOP_VCALL2(pv_mmu_ops.set_pmd, pmdp, val);
-}
-
-#if PAGETABLE_LEVELS >= 3
-static inline pmd_t __pmd(pmdval_t val)
-{
- pmdval_t ret;
-
- if (sizeof(pmdval_t) > sizeof(long))
- ret = PVOP_CALL2(pmdval_t, pv_mmu_ops.make_pmd,
- val, (u64)val >> 32);
- else
- ret = PVOP_CALL1(pmdval_t, pv_mmu_ops.make_pmd,
- val);
-
- return (pmd_t) { ret };
-}
-
-static inline pmdval_t pmd_val(pmd_t pmd)
-{
- pmdval_t ret;
-
- if (sizeof(pmdval_t) > sizeof(long))
- ret = PVOP_CALL2(pmdval_t, pv_mmu_ops.pmd_val,
- pmd.pmd, (u64)pmd.pmd >> 32);
- else
- ret = PVOP_CALL1(pmdval_t, pv_mmu_ops.pmd_val,
- pmd.pmd);
-
- return ret;
-}
-
-static inline void set_pud(pud_t *pudp, pud_t pud)
-{
- pudval_t val = native_pud_val(pud);
-
- if (sizeof(pudval_t) > sizeof(long))
- PVOP_VCALL3(pv_mmu_ops.set_pud, pudp,
- val, (u64)val >> 32);
- else
- PVOP_VCALL2(pv_mmu_ops.set_pud, pudp,
- val);
-}
-#if PAGETABLE_LEVELS == 4
-static inline pud_t __pud(pudval_t val)
-{
- pudval_t ret;
-
- if (sizeof(pudval_t) > sizeof(long))
- ret = PVOP_CALL2(pudval_t, pv_mmu_ops.make_pud,
- val, (u64)val >> 32);
- else
- ret = PVOP_CALL1(pudval_t, pv_mmu_ops.make_pud,
- val);
-
- return (pud_t) { ret };
-}
-
-static inline pudval_t pud_val(pud_t pud)
-{
- pudval_t ret;
-
- if (sizeof(pudval_t) > sizeof(long))
- ret = PVOP_CALL2(pudval_t, pv_mmu_ops.pud_val,
- pud.pud, (u64)pud.pud >> 32);
- else
- ret = PVOP_CALL1(pudval_t, pv_mmu_ops.pud_val,
- pud.pud);
-
- return ret;
-}
-
-static inline void set_pgd(pgd_t *pgdp, pgd_t pgd)
-{
- pgdval_t val = native_pgd_val(pgd);
-
- if (sizeof(pgdval_t) > sizeof(long))
- PVOP_VCALL3(pv_mmu_ops.set_pgd, pgdp,
- val, (u64)val >> 32);
- else
- PVOP_VCALL2(pv_mmu_ops.set_pgd, pgdp,
- val);
-}
-
-static inline void pgd_clear(pgd_t *pgdp)
-{
- set_pgd(pgdp, __pgd(0));
-}
-
-static inline void pud_clear(pud_t *pudp)
-{
- set_pud(pudp, __pud(0));
-}
-
-#endif /* PAGETABLE_LEVELS == 4 */
-
-#endif /* PAGETABLE_LEVELS >= 3 */
-
-#ifdef CONFIG_X86_PAE
-/* Special-case pte-setting operations for PAE, which can't update a
- 64-bit pte atomically */
-static inline void set_pte_atomic(pte_t *ptep, pte_t pte)
-{
- PVOP_VCALL3(pv_mmu_ops.set_pte_atomic, ptep,
- pte.pte, pte.pte >> 32);
-}
-
-static inline void set_pte_present(struct mm_struct *mm, unsigned long addr,
- pte_t *ptep, pte_t pte)
-{
- /* 5 arg words */
- pv_mmu_ops.set_pte_present(mm, addr, ptep, pte);
-}
-
-static inline void pte_clear(struct mm_struct *mm, unsigned long addr,
- pte_t *ptep)
-{
- PVOP_VCALL3(pv_mmu_ops.pte_clear, mm, addr, ptep);
-}
-
-static inline void pmd_clear(pmd_t *pmdp)
-{
- PVOP_VCALL1(pv_mmu_ops.pmd_clear, pmdp);
-}
-#else /* !CONFIG_X86_PAE */
-static inline void set_pte_atomic(pte_t *ptep, pte_t pte)
-{
- set_pte(ptep, pte);
-}
-
-static inline void set_pte_present(struct mm_struct *mm, unsigned long addr,
- pte_t *ptep, pte_t pte)
-{
- set_pte(ptep, pte);
-}
-
-static inline void pte_clear(struct mm_struct *mm, unsigned long addr,
- pte_t *ptep)
-{
- set_pte_at(mm, addr, ptep, __pte(0));
-}
-
-static inline void pmd_clear(pmd_t *pmdp)
-{
- set_pmd(pmdp, __pmd(0));
-}
-#endif /* CONFIG_X86_PAE */
-
-/* Lazy mode for batching updates / context switch */
-enum paravirt_lazy_mode {
- PARAVIRT_LAZY_NONE,
- PARAVIRT_LAZY_MMU,
- PARAVIRT_LAZY_CPU,
-};
-
-enum paravirt_lazy_mode paravirt_get_lazy_mode(void);
-void paravirt_enter_lazy_cpu(void);
-void paravirt_leave_lazy_cpu(void);
-void paravirt_enter_lazy_mmu(void);
-void paravirt_leave_lazy_mmu(void);
-void paravirt_leave_lazy(enum paravirt_lazy_mode mode);
-
-#define __HAVE_ARCH_ENTER_LAZY_CPU_MODE
-static inline void arch_enter_lazy_cpu_mode(void)
-{
- PVOP_VCALL0(pv_cpu_ops.lazy_mode.enter);
-}
-
-static inline void arch_leave_lazy_cpu_mode(void)
-{
- PVOP_VCALL0(pv_cpu_ops.lazy_mode.leave);
-}
-
-static inline void arch_flush_lazy_cpu_mode(void)
-{
- if (unlikely(paravirt_get_lazy_mode() == PARAVIRT_LAZY_CPU)) {
- arch_leave_lazy_cpu_mode();
- arch_enter_lazy_cpu_mode();
- }
-}
-
-
-#define __HAVE_ARCH_ENTER_LAZY_MMU_MODE
-static inline void arch_enter_lazy_mmu_mode(void)
-{
- PVOP_VCALL0(pv_mmu_ops.lazy_mode.enter);
-}
-
-static inline void arch_leave_lazy_mmu_mode(void)
-{
- PVOP_VCALL0(pv_mmu_ops.lazy_mode.leave);
-}
-
-static inline void arch_flush_lazy_mmu_mode(void)
-{
- if (unlikely(paravirt_get_lazy_mode() == PARAVIRT_LAZY_MMU)) {
- arch_leave_lazy_mmu_mode();
- arch_enter_lazy_mmu_mode();
- }
-}
-
-static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx,
- unsigned long phys, pgprot_t flags)
-{
- pv_mmu_ops.set_fixmap(idx, phys, flags);
-}
-
-void _paravirt_nop(void);
-#define paravirt_nop ((void *)_paravirt_nop)
-
-void paravirt_use_bytelocks(void);
-
-#ifdef CONFIG_SMP
-
-static inline int __raw_spin_is_locked(struct raw_spinlock *lock)
-{
- return PVOP_CALL1(int, pv_lock_ops.spin_is_locked, lock);
-}
-
-static inline int __raw_spin_is_contended(struct raw_spinlock *lock)
-{
- return PVOP_CALL1(int, pv_lock_ops.spin_is_contended, lock);
-}
-
-static __always_inline void __raw_spin_lock(struct raw_spinlock *lock)
-{
- PVOP_VCALL1(pv_lock_ops.spin_lock, lock);
-}
-
-static __always_inline void __raw_spin_lock_flags(struct raw_spinlock *lock,
- unsigned long flags)
-{
- PVOP_VCALL2(pv_lock_ops.spin_lock_flags, lock, flags);
-}
-
-static __always_inline int __raw_spin_trylock(struct raw_spinlock *lock)
-{
- return PVOP_CALL1(int, pv_lock_ops.spin_trylock, lock);
-}
-
-static __always_inline void __raw_spin_unlock(struct raw_spinlock *lock)
-{
- PVOP_VCALL1(pv_lock_ops.spin_unlock, lock);
-}
-
-#endif
-
-/* These all sit in the .parainstructions section to tell us what to patch. */
-struct paravirt_patch_site {
- u8 *instr; /* original instructions */
- u8 instrtype; /* type of this instruction */
- u8 len; /* length of original instruction */
- u16 clobbers; /* what registers you may clobber */
-};
-
-extern struct paravirt_patch_site __parainstructions[],
- __parainstructions_end[];
-
-#ifdef CONFIG_X86_32
-#define PV_SAVE_REGS "pushl %%ecx; pushl %%edx;"
-#define PV_RESTORE_REGS "popl %%edx; popl %%ecx"
-#define PV_FLAGS_ARG "0"
-#define PV_EXTRA_CLOBBERS
-#define PV_VEXTRA_CLOBBERS
-#else
-/* We save some registers, but all of them, that's too much. We clobber all
- * caller saved registers but the argument parameter */
-#define PV_SAVE_REGS "pushq %%rdi;"
-#define PV_RESTORE_REGS "popq %%rdi;"
-#define PV_EXTRA_CLOBBERS EXTRA_CLOBBERS, "rcx" , "rdx", "rsi"
-#define PV_VEXTRA_CLOBBERS EXTRA_CLOBBERS, "rdi", "rcx" , "rdx", "rsi"
-#define PV_FLAGS_ARG "D"
-#endif
-
-static inline unsigned long __raw_local_save_flags(void)
-{
- unsigned long f;
-
- asm volatile(paravirt_alt(PV_SAVE_REGS
- PARAVIRT_CALL
- PV_RESTORE_REGS)
- : "=a"(f)
- : paravirt_type(pv_irq_ops.save_fl),
- paravirt_clobber(CLBR_EAX)
- : "memory", "cc" PV_VEXTRA_CLOBBERS);
- return f;
-}
-
-static inline void raw_local_irq_restore(unsigned long f)
-{
- asm volatile(paravirt_alt(PV_SAVE_REGS
- PARAVIRT_CALL
- PV_RESTORE_REGS)
- : "=a"(f)
- : PV_FLAGS_ARG(f),
- paravirt_type(pv_irq_ops.restore_fl),
- paravirt_clobber(CLBR_EAX)
- : "memory", "cc" PV_EXTRA_CLOBBERS);
-}
-
-static inline void raw_local_irq_disable(void)
-{
- asm volatile(paravirt_alt(PV_SAVE_REGS
- PARAVIRT_CALL
- PV_RESTORE_REGS)
- :
- : paravirt_type(pv_irq_ops.irq_disable),
- paravirt_clobber(CLBR_EAX)
- : "memory", "eax", "cc" PV_EXTRA_CLOBBERS);
-}
-
-static inline void raw_local_irq_enable(void)
-{
- asm volatile(paravirt_alt(PV_SAVE_REGS
- PARAVIRT_CALL
- PV_RESTORE_REGS)
- :
- : paravirt_type(pv_irq_ops.irq_enable),
- paravirt_clobber(CLBR_EAX)
- : "memory", "eax", "cc" PV_EXTRA_CLOBBERS);
-}
-
-static inline unsigned long __raw_local_irq_save(void)
-{
- unsigned long f;
-
- f = __raw_local_save_flags();
- raw_local_irq_disable();
- return f;
-}
-
-
-/* Make sure as little as possible of this mess escapes. */
-#undef PARAVIRT_CALL
-#undef __PVOP_CALL
-#undef __PVOP_VCALL
-#undef PVOP_VCALL0
-#undef PVOP_CALL0
-#undef PVOP_VCALL1
-#undef PVOP_CALL1
-#undef PVOP_VCALL2
-#undef PVOP_CALL2
-#undef PVOP_VCALL3
-#undef PVOP_CALL3
-#undef PVOP_VCALL4
-#undef PVOP_CALL4
-
-#else /* __ASSEMBLY__ */
-
-#define _PVSITE(ptype, clobbers, ops, word, algn) \
-771:; \
- ops; \
-772:; \
- .pushsection .parainstructions,"a"; \
- .align algn; \
- word 771b; \
- .byte ptype; \
- .byte 772b-771b; \
- .short clobbers; \
- .popsection
-
-
-#ifdef CONFIG_X86_64
-#define PV_SAVE_REGS \
- push %rax; \
- push %rcx; \
- push %rdx; \
- push %rsi; \
- push %rdi; \
- push %r8; \
- push %r9; \
- push %r10; \
- push %r11
-#define PV_RESTORE_REGS \
- pop %r11; \
- pop %r10; \
- pop %r9; \
- pop %r8; \
- pop %rdi; \
- pop %rsi; \
- pop %rdx; \
- pop %rcx; \
- pop %rax
-#define PARA_PATCH(struct, off) ((PARAVIRT_PATCH_##struct + (off)) / 8)
-#define PARA_SITE(ptype, clobbers, ops) _PVSITE(ptype, clobbers, ops, .quad, 8)
-#define PARA_INDIRECT(addr) *addr(%rip)
-#else
-#define PV_SAVE_REGS pushl %eax; pushl %edi; pushl %ecx; pushl %edx
-#define PV_RESTORE_REGS popl %edx; popl %ecx; popl %edi; popl %eax
-#define PARA_PATCH(struct, off) ((PARAVIRT_PATCH_##struct + (off)) / 4)
-#define PARA_SITE(ptype, clobbers, ops) _PVSITE(ptype, clobbers, ops, .long, 4)
-#define PARA_INDIRECT(addr) *%cs:addr
-#endif
-
-#define INTERRUPT_RETURN \
- PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_iret), CLBR_NONE, \
- jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_iret))
-
-#define DISABLE_INTERRUPTS(clobbers) \
- PARA_SITE(PARA_PATCH(pv_irq_ops, PV_IRQ_irq_disable), clobbers, \
- PV_SAVE_REGS; \
- call PARA_INDIRECT(pv_irq_ops+PV_IRQ_irq_disable); \
- PV_RESTORE_REGS;) \
-
-#define ENABLE_INTERRUPTS(clobbers) \
- PARA_SITE(PARA_PATCH(pv_irq_ops, PV_IRQ_irq_enable), clobbers, \
- PV_SAVE_REGS; \
- call PARA_INDIRECT(pv_irq_ops+PV_IRQ_irq_enable); \
- PV_RESTORE_REGS;)
-
-#define USERGS_SYSRET32 \
- PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_usergs_sysret32), \
- CLBR_NONE, \
- jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_usergs_sysret32))
-
-#ifdef CONFIG_X86_32
-#define GET_CR0_INTO_EAX \
- push %ecx; push %edx; \
- call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0); \
- pop %edx; pop %ecx
-
-#define ENABLE_INTERRUPTS_SYSEXIT \
- PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_irq_enable_sysexit), \
- CLBR_NONE, \
- jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_irq_enable_sysexit))
-
-
-#else /* !CONFIG_X86_32 */
-
-/*
- * If swapgs is used while the userspace stack is still current,
- * there's no way to call a pvop. The PV replacement *must* be
- * inlined, or the swapgs instruction must be trapped and emulated.
- */
-#define SWAPGS_UNSAFE_STACK \
- PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_swapgs), CLBR_NONE, \
- swapgs)
-
-#define SWAPGS \
- PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_swapgs), CLBR_NONE, \
- PV_SAVE_REGS; \
- call PARA_INDIRECT(pv_cpu_ops+PV_CPU_swapgs); \
- PV_RESTORE_REGS \
- )
-
-#define GET_CR2_INTO_RCX \
- call PARA_INDIRECT(pv_mmu_ops+PV_MMU_read_cr2); \
- movq %rax, %rcx; \
- xorq %rax, %rax;
-
-#define PARAVIRT_ADJUST_EXCEPTION_FRAME \
- PARA_SITE(PARA_PATCH(pv_irq_ops, PV_IRQ_adjust_exception_frame), \
- CLBR_NONE, \
- call PARA_INDIRECT(pv_irq_ops+PV_IRQ_adjust_exception_frame))
-
-#define USERGS_SYSRET64 \
- PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_usergs_sysret64), \
- CLBR_NONE, \
- jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_usergs_sysret64))
-
-#define ENABLE_INTERRUPTS_SYSEXIT32 \
- PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_irq_enable_sysexit), \
- CLBR_NONE, \
- jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_irq_enable_sysexit))
-#endif /* CONFIG_X86_32 */
-
-#endif /* __ASSEMBLY__ */
-#endif /* CONFIG_PARAVIRT */
-#endif /* ASM_X86__PARAVIRT_H */
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-04 05:14:32 +0000