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/* SPDX-License-Identifier: GPL-2.0 */
#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/pgtable_types.h>
#include <asm/asm.h>
#include <asm/nospec-branch.h>

#include <asm/paravirt_types.h>

#ifndef __ASSEMBLY__
#include <linux/bug.h>
#include <linux/types.h>
#include <linux/cpumask.h>
#include <asm/frame.h>

static inline void load_sp0(unsigned long sp0)
{
	PVOP_VCALL1(pv_cpu_ops.load_sp0, sp0);
}

/* 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 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 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 arch_safe_halt(void)
{
	PVOP_VCALL0(pv_irq_ops.safe_halt);
}

static inline void halt(void)
{
	PVOP_VCALL0(pv_irq_ops.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)
{
	return PVOP_CALL1(u64, pv_cpu_ops.read_msr, msr);
}

static inline void paravirt_write_msr(unsigned msr,
				      unsigned low, unsigned high)
{
	PVOP_VCALL3(pv_cpu_ops.write_msr, msr, low, high);
}

static inline u64 paravirt_read_msr_safe(unsigned msr, int *err)
{
	return PVOP_CALL2(u64, pv_cpu_ops.read_msr_safe, msr, err);
}

static inline int paravirt_write_msr_safe(unsigned msr,
					  unsigned low, unsigned high)
{
	return PVOP_CALL3(int, pv_cpu_ops.write_msr_safe, msr, low, high);
}

#define rdmsr(msr, val1, val2)			\
do {						\
	u64 _l = paravirt_read_msr(msr);	\
	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 {						\
	val = paravirt_read_msr(msr);		\
} while (0)

static inline void wrmsrl(unsigned msr, u64 val)
{
	wrmsr(msr, (u32)val, (u32)(val>>32));
}

#define wrmsr_safe(msr, a, b)	paravirt_write_msr_safe(msr, a, b)

/* rdmsr with exception handling */
#define rdmsr_safe(msr, a, b)				\
({							\
	int _err;					\
	u64 _l = paravirt_read_msr_safe(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_safe(msr, &err);
	return err;
}

static inline unsigned long long paravirt_sched_clock(void)
{
	return PVOP_CALL0(unsigned long long, pv_time_ops.sched_clock);
}

struct static_key;
extern struct static_key paravirt_steal_enabled;
extern struct static_key paravirt_steal_rq_enabled;

static inline u64 paravirt_steal_clock(int cpu)
{
	return PVOP_CALL1(u64, pv_time_ops.steal_clock, cpu);
}

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)

#define rdpmcl(counter, val) ((val) = paravirt_read_pmc(counter))

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 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
}

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 paravirt_arch_dup_mmap(struct mm_struct *oldmm,
					  struct mm_struct *mm)
{
	PVOP_VCALL2(pv_mmu_ops.dup_mmap, oldmm, mm);
}

static inline void paravirt_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_one_user(unsigned long addr)
{
	PVOP_VCALL1(pv_mmu_ops.flush_tlb_one_user, addr);
}

static inline void flush_tlb_others(const struct cpumask *cpumask,
				    const struct flush_tlb_info *info)
{
	PVOP_VCALL2(pv_mmu_ops.flush_tlb_others, cpumask, info);
}

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_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);
}

static inline void paravirt_alloc_p4d(struct mm_struct *mm, unsigned long pfn)
{
	PVOP_VCALL2(pv_mmu_ops.alloc_p4d, mm, pfn);
}

static inline void paravirt_release_p4d(unsigned long pfn)
{
	PVOP_VCALL1(pv_mmu_ops.release_p4d, pfn);
}

static inline pte_t __pte(pteval_t val)
{
	pteval_t ret;

	if (sizeof(pteval_t) > sizeof(long))
		ret = PVOP_CALLEE2(pteval_t,
				   pv_mmu_ops.make_pte,
				   val, (u64)val >> 32);
	else
		ret = PVOP_CALLEE1(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_CALLEE2(pteval_t, pv_mmu_ops.pte_val,
				   pte.pte, (u64)pte.pte >> 32);
	else
		ret = PVOP_CALLEE1(pteval_t, pv_mmu_ops.pte_val,
				   pte.pte);

	return ret;
}

static inline pgd_t __pgd(pgdval_t val)
{
	pgdval_t ret;

	if (sizeof(pgdval_t) > sizeof(long))
		ret = PVOP_CALLEE2(pgdval_t, pv_mmu_ops.make_pgd,
				   val, (u64)val >> 32);
	else
		ret = PVOP_CALLEE1(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_CALLEE2(pgdval_t, pv_mmu_ops.pgd_val,
				    pgd.pgd, (u64)pgd.pgd >> 32);
	else
		ret =  PVOP_CALLEE1(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 CONFIG_PGTABLE_LEVELS >= 3
static inline pmd_t __pmd(pmdval_t val)
{
	pmdval_t ret;

	if (sizeof(pmdval_t) > sizeof(long))
		ret = PVOP_CALLEE2(pmdval_t, pv_mmu_ops.make_pmd,
				   val, (u64)val >> 32);
	else
		ret = PVOP_CALLEE1(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_CALLEE2(pmdval_t, pv_mmu_ops.pmd_val,
				    pmd.pmd, (u64)pmd.pmd >> 32);
	else
		ret =  PVOP_CALLEE1(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 CONFIG_PGTABLE_LEVELS >= 4
static inline pud_t __pud(pudval_t val)
{
	pudval_t ret;

	if (sizeof(pudval_t) > sizeof(long))
		ret = PVOP_CALLEE2(pudval_t, pv_mmu_ops.make_pud,
				   val, (u64)val >> 32);
	else
		ret = PVOP_CALLEE1(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_CALLEE2(pudval_t, pv_mmu_ops.pud_val,
				    pud.pud, (u64)pud.pud >> 32);
	else
		ret =  PVOP_CALLEE1(pudval_t, pv_mmu_ops.pud_val,
				    pud.pud);

	return ret;
}

static inline void pud_clear(pud_t *pudp)
{
	set_pud(pudp, __pud(0));
}

static inline void set_p4d(p4d_t *p4dp, p4d_t p4d)
{
	p4dval_t val = native_p4d_val(p4d);

	if (sizeof(p4dval_t) > sizeof(long))
		PVOP_VCALL3(pv_mmu_ops.set_p4d, p4dp,
			    val, (u64)val >> 32);
	else
		PVOP_VCALL2(pv_mmu_ops.set_p4d, p4dp,
			    val);
}

#if CONFIG_PGTABLE_LEVELS >= 5

static inline p4d_t __p4d(p4dval_t val)
{
	p4dval_t ret = PVOP_CALLEE1(p4dval_t, pv_mmu_ops.make_p4d, val);

	return (p4d_t) { ret };
}

static inline p4dval_t p4d_val(p4d_t p4d)
{
	return PVOP_CALLEE1(p4dval_t, pv_mmu_ops.p4d_val, p4d.p4d);
}

static inline void set_pgd(pgd_t *pgdp, pgd_t pgd)
{
	pgdval_t val = native_pgd_val(pgd);

	PVOP_VCALL2(pv_mmu_ops.set_pgd, pgdp, val);
}

static inline void pgd_clear(pgd_t *pgdp)
{
	set_pgd(pgdp, __pgd(0));
}

#endif  /* CONFIG_PGTABLE_LEVELS == 5 */

static inline void p4d_clear(p4d_t *p4dp)
{
	set_p4d(p4dp, __p4d(0));
}

#endif	/* CONFIG_PGTABLE_LEVELS == 4 */

#endif	/* CONFIG_PGTABLE_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 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 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 */

#define  __HAVE_ARCH_START_CONTEXT_SWITCH
static inline void arch_start_context_switch(struct task_struct *prev)
{
	PVOP_VCALL1(pv_cpu_ops.start_context_switch, prev);
}

static inline void arch_end_context_switch(struct task_struct *next)
{
	PVOP_VCALL1(pv_cpu_ops.end_context_switch, next);
}

#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)
{
	PVOP_VCALL0(pv_mmu_ops.lazy_mode.flush);
}

static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx,
				phys_addr_t phys, pgprot_t flags)
{
	pv_mmu_ops.set_fixmap(idx, phys, flags);
}

#if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS)

static __always_inline void pv_queued_spin_lock_slowpath(struct qspinlock *lock,
							u32 val)
{
	PVOP_VCALL2(pv_lock_ops.queued_spin_lock_slowpath, lock, val);
}

static __always_inline void pv_queued_spin_unlock(struct qspinlock *lock)
{
	PVOP_VCALLEE1(pv_lock_ops.queued_spin_unlock, lock);
}

static __always_inline void pv_wait(u8 *ptr, u8 val)
{
	PVOP_VCALL2(pv_lock_ops.wait, ptr, val);
}

static __always_inline void pv_kick(int cpu)
{
	PVOP_VCALL1(pv_lock_ops.kick, cpu);
}

static __always_inline bool pv_vcpu_is_preempted(long cpu)
{
	return PVOP_CALLEE1(bool, pv_lock_ops.vcpu_is_preempted, cpu);
}

#endif /* SMP && PARAVIRT_SPINLOCKS */

#ifdef CONFIG_X86_32
#define PV_SAVE_REGS "pushl %ecx; pushl %edx;"
#define PV_RESTORE_REGS "popl %edx; popl %ecx;"

/* save and restore all caller-save registers, except return value */
#define PV_SAVE_ALL_CALLER_REGS		"pushl %ecx;"
#define PV_RESTORE_ALL_CALLER_REGS	"popl  %ecx;"

#define PV_FLAGS_ARG "0"
#define PV_EXTRA_CLOBBERS
#define PV_VEXTRA_CLOBBERS
#else
/* save and restore all caller-save registers, except return value */
#define PV_SAVE_ALL_CALLER_REGS						\
	"push %rcx;"							\
	"push %rdx;"							\
	"push %rsi;"							\
	"push %rdi;"							\
	"push %r8;"							\
	"push %r9;"							\
	"push %r10;"							\
	"push %r11;"
#define PV_RESTORE_ALL_CALLER_REGS					\
	"pop %r11;"							\
	"pop %r10;"							\
	"pop %r9;"							\
	"pop %r8;"							\
	"pop %rdi;"							\
	"pop %rsi;"							\
	"pop %rdx;"							\
	"pop %rcx;"

/* 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

/*
 * Generate a thunk around a function which saves all caller-save
 * registers except for the return value.  This allows C functions to
 * be called from assembler code where fewer than normal registers are
 * available.  It may also help code generation around calls from C
 * code if the common case doesn't use many registers.
 *
 * When a callee is wrapped in a thunk, the caller can assume that all
 * arg regs and all scratch registers are preserved across the
 * call. The return value in rax/eax will not be saved, even for void
 * functions.
 */
#define PV_THUNK_NAME(func) "__raw_callee_save_" #func
#define PV_CALLEE_SAVE_REGS_THUNK(func)					\
	extern typeof(func) __raw_callee_save_##func;			\
									\
	asm(".pushsection .text;"					\
	    ".globl " PV_THUNK_NAME(func) ";"				\
	    ".type " PV_THUNK_NAME(func) ", @function;"			\
	    PV_THUNK_NAME(func) ":"					\
	    FRAME_BEGIN							\
	    PV_SAVE_ALL_CALLER_REGS					\
	    "call " #func ";"						\
	    PV_RESTORE_ALL_CALLER_REGS					\
	    FRAME_END							\
	    "ret;"							\
	    ".size " PV_THUNK_NAME(func) ", .-" PV_THUNK_NAME(func) ";"	\
	    ".popsection")

/* Get a reference to a callee-save function */
#define PV_CALLEE_SAVE(func)						\
	((struct paravirt_callee_save) { __raw_callee_save_##func })

/* Promise that "func" already uses the right calling convention */
#define __PV_IS_CALLEE_SAVE(func)			\
	((struct paravirt_callee_save) { func })

static inline notrace unsigned long arch_local_save_flags(void)
{
	return PVOP_CALLEE0(unsigned long, pv_irq_ops.save_fl);
}

static inline notrace void arch_local_irq_restore(unsigned long f)
{
	PVOP_VCALLEE1(pv_irq_ops.restore_fl, f);
}

static inline notrace void arch_local_irq_disable(void)
{
	PVOP_VCALLEE0(pv_irq_ops.irq_disable);
}

static inline notrace void arch_local_irq_enable(void)
{
	PVOP_VCALLEE0(pv_irq_ops.irq_enable);
}

static inline notrace unsigned long arch_local_irq_save(void)
{
	unsigned long f;

	f = arch_local_save_flags();
	arch_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

extern void default_banner(void);

#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


#define COND_PUSH(set, mask, reg)			\
	.if ((~(set)) & mask); push %reg; .endif
#define COND_POP(set, mask, reg)			\
	.if ((~(set)) & mask); pop %reg; .endif

#ifdef CONFIG_X86_64

#define PV_SAVE_REGS(set)			\
	COND_PUSH(set, CLBR_RAX, rax);		\
	COND_PUSH(set, CLBR_RCX, rcx);		\
	COND_PUSH(set, CLBR_RDX, rdx);		\
	COND_PUSH(set, CLBR_RSI, rsi);		\
	COND_PUSH(set, CLBR_RDI, rdi);		\
	COND_PUSH(set, CLBR_R8, r8);		\
	COND_PUSH(set, CLBR_R9, r9);		\
	COND_PUSH(set, CLBR_R10, r10);		\
	COND_PUSH(set, CLBR_R11, r11)
#define PV_RESTORE_REGS(set)			\
	COND_POP(set, CLBR_R11, r11);		\
	COND_POP(set, CLBR_R10, r10);		\
	COND_POP(set, CLBR_R9, r9);		\
	COND_POP(set, CLBR_R8, r8);		\
	COND_POP(set, CLBR_RDI, rdi);		\
	COND_POP(set, CLBR_RSI, rsi);		\
	COND_POP(set, CLBR_RDX, rdx);		\
	COND_POP(set, CLBR_RCX, rcx);		\
	COND_POP(set, CLBR_RAX, 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(set)			\
	COND_PUSH(set, CLBR_EAX, eax);		\
	COND_PUSH(set, CLBR_EDI, edi);		\
	COND_PUSH(set, CLBR_ECX, ecx);		\
	COND_PUSH(set, CLBR_EDX, edx)
#define PV_RESTORE_REGS(set)			\
	COND_POP(set, CLBR_EDX, edx);		\
	COND_POP(set, CLBR_ECX, ecx);		\
	COND_POP(set, CLBR_EDI, edi);		\
	COND_POP(set, CLBR_EAX, 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,	\
		  ANNOTATE_RETPOLINE_SAFE;					\
		  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(clobbers | CLBR_CALLEE_SAVE);		\
		  ANNOTATE_RETPOLINE_SAFE;					\
		  call PARA_INDIRECT(pv_irq_ops+PV_IRQ_irq_disable);	\
		  PV_RESTORE_REGS(clobbers | CLBR_CALLEE_SAVE);)

#define ENABLE_INTERRUPTS(clobbers)					\
	PARA_SITE(PARA_PATCH(pv_irq_ops, PV_IRQ_irq_enable), clobbers,	\
		  PV_SAVE_REGS(clobbers | CLBR_CALLEE_SAVE);		\
		  ANNOTATE_RETPOLINE_SAFE;					\
		  call PARA_INDIRECT(pv_irq_ops+PV_IRQ_irq_enable);	\
		  PV_RESTORE_REGS(clobbers | CLBR_CALLEE_SAVE);)

#ifdef CONFIG_X86_32
#define GET_CR0_INTO_EAX				\
	push %ecx; push %edx;				\
	ANNOTATE_RETPOLINE_SAFE;				\
	call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0);	\
	pop %edx; pop %ecx
#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)

/*
 * Note: swapgs is very special, and in practise is either going to be
 * implemented with a single "swapgs" instruction or something very
 * special.  Either way, we don't need to save any registers for
 * it.
 */
#define SWAPGS								\
	PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_swapgs), CLBR_NONE,	\
		  ANNOTATE_RETPOLINE_SAFE;					\
		  call PARA_INDIRECT(pv_cpu_ops+PV_CPU_swapgs);		\
		 )

#define GET_CR2_INTO_RAX				\
	ANNOTATE_RETPOLINE_SAFE;				\
	call PARA_INDIRECT(pv_mmu_ops+PV_MMU_read_cr2);

#define USERGS_SYSRET64							\
	PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_usergs_sysret64),	\
		  CLBR_NONE,						\
		  ANNOTATE_RETPOLINE_SAFE;					\
		  jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_usergs_sysret64);)

#ifdef CONFIG_DEBUG_ENTRY
#define SAVE_FLAGS(clobbers)                                        \
	PARA_SITE(PARA_PATCH(pv_irq_ops, PV_IRQ_save_fl), clobbers, \
		  PV_SAVE_REGS(clobbers | CLBR_CALLEE_SAVE);        \
		  ANNOTATE_RETPOLINE_SAFE;				    \
		  call PARA_INDIRECT(pv_irq_ops+PV_IRQ_save_fl);    \
		  PV_RESTORE_REGS(clobbers | CLBR_CALLEE_SAVE);)
#endif

#endif	/* CONFIG_X86_32 */

#endif /* __ASSEMBLY__ */
#else  /* CONFIG_PARAVIRT */
# define default_banner x86_init_noop
#ifndef __ASSEMBLY__
static inline void paravirt_arch_dup_mmap(struct mm_struct *oldmm,
					  struct mm_struct *mm)
{
}

static inline void paravirt_arch_exit_mmap(struct mm_struct *mm)
{
}
#endif /* __ASSEMBLY__ */
#endif /* !CONFIG_PARAVIRT */
#endif /* _ASM_X86_PARAVIRT_H */

Filemanager

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crypto Folder 0755
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fpu Folder 0755
numachip Folder 0755
trace Folder 0755
uv Folder 0755
xen Folder 0755
Kbuild File 294 B 0644
a.out-core.h File 1.89 KB 0644
acenv.h File 1.56 KB 0644
acpi.h File 4.76 KB 0644
agp.h File 1.04 KB 0644
alternative-asm.h File 2.43 KB 0644
alternative.h File 8.28 KB 0644
amd_nb.h File 2.98 KB 0644
apb_timer.h File 1.43 KB 0644
apic.h File 14.53 KB 0644
apic_flat_64.h File 151 B 0644
apicdef.h File 11.26 KB 0644
apm.h File 1.8 KB 0644
arch_hweight.h File 1.28 KB 0644
archrandom.h File 3.03 KB 0644
asm-offsets.h File 35 B 0644
asm-prototypes.h File 946 B 0644
asm.h File 4.97 KB 0644
atomic.h File 6.02 KB 0644
atomic64_32.h File 8.71 KB 0644
atomic64_64.h File 6.31 KB 0644
barrier.h File 3.6 KB 0644
bios_ebda.h File 914 B 0644
bitops.h File 13.78 KB 0644
boot.h File 1.53 KB 0644
bootparam_utils.h File 2.86 KB 0644
bug.h File 2.07 KB 0644
bugs.h File 493 B 0644
cache.h File 641 B 0644
cacheflush.h File 306 B 0644
cacheinfo.h File 209 B 0644
calgary.h File 2.31 KB 0644
ce4100.h File 121 B 0644
checksum.h File 133 B 0644
checksum_32.h File 4.86 KB 0644
checksum_64.h File 5.41 KB 0644
clocksource.h File 488 B 0644
cmdline.h File 302 B 0644
cmpxchg.h File 7.68 KB 0644
cmpxchg_32.h File 3.15 KB 0644
cmpxchg_64.h File 543 B 0644
compat.h File 7.37 KB 0644
cpu.h File 975 B 0644
cpu_device_id.h File 7.39 KB 0644
cpu_entry_area.h File 2.27 KB 0644
cpufeature.h File 7.75 KB 0644
cpufeatures.h File 25.59 KB 0644
cpumask.h File 408 B 0644
crash.h File 320 B 0644
current.h File 443 B 0644
debugreg.h File 2.67 KB 0644
delay.h File 208 B 0644
desc.h File 11.42 KB 0644
desc_defs.h File 3.16 KB 0644
device.h File 568 B 0644
disabled-features.h File 2.31 KB 0644
div64.h File 1.79 KB 0644
dma-mapping.h File 2.4 KB 0644
dma.h File 9.58 KB 0644
dmi.h File 556 B 0644
dwarf2.h File 2.43 KB 0644
edac.h File 474 B 0644
efi.h File 6.9 KB 0644
elf.h File 10.82 KB 0644
emergency-restart.h File 202 B 0644
entry_arch.h File 1.88 KB 0644
espfix.h File 426 B 0644
exec.h File 37 B 0644
export.h File 120 B 0644
extable.h File 1.27 KB 0644
fb.h File 540 B 0644
fixmap.h File 6.04 KB 0644
floppy.h File 6.59 KB 0644
frame.h File 815 B 0644
ftrace.h File 1.8 KB 0644
futex.h File 2.2 KB 0644
gart.h File 2.64 KB 0644
genapic.h File 22 B 0644
geode.h File 842 B 0644
hardirq.h File 2.3 KB 0644
highmem.h File 2.6 KB 0644
hpet.h File 3.38 KB 0644
hugetlb.h File 2.15 KB 0644
hw_breakpoint.h File 1.96 KB 0644
hw_irq.h File 3.85 KB 0644
hypervisor.h File 1.84 KB 0644
i8259.h File 1.93 KB 0644
ia32.h File 1.46 KB 0644
ia32_unistd.h File 313 B 0644
imr.h File 1.81 KB 0644
inat.h File 6.58 KB 0644
inat_types.h File 1013 B 0644
init.h File 632 B 0644
insn-eval.h File 837 B 0644
insn.h File 7.46 KB 0644
inst.h File 5.07 KB 0644
intel-family.h File 3.47 KB 0644
intel-mid.h File 4.91 KB 0644
intel_ds.h File 793 B 0644
intel_mid_vrtc.h File 326 B 0644
intel_pmc_ipc.h File 2.08 KB 0644
intel_pt.h File 292 B 0644
intel_punit_ipc.h File 4.56 KB 0644
intel_rdt_sched.h File 2.59 KB 0644
intel_scu_ipc.h File 2.3 KB 0644
intel_telemetry.h File 3.96 KB 0644
invpcid.h File 1.57 KB 0644
io.h File 12.21 KB 0644
io_apic.h File 5.63 KB 0644
iomap.h File 1.22 KB 0644
iommu.h File 392 B 0644
iommu_table.h File 3.82 KB 0644
iosf_mbi.h File 5.74 KB 0644
ipi.h File 2.84 KB 0644
irq.h File 1.12 KB 0644
irq_regs.h File 679 B 0644
irq_remapping.h File 2.96 KB 0644
irq_vectors.h File 4.12 KB 0644
irq_work.h File 397 B 0644
irqdomain.h File 1.61 KB 0644
irqflags.h File 4.38 KB 0644
ist.h File 735 B 0644
jump_label.h File 2.44 KB 0644
kasan.h File 966 B 0644
kaslr.h File 424 B 0644
kbdleds.h File 454 B 0644
kdebug.h File 752 B 0644
kexec-bzimage64.h File 189 B 0644
kexec.h File 6.69 KB 0644
kgdb.h File 2.09 KB 0644
kmap_types.h File 289 B 0644
kprobes.h File 3.82 KB 0644
kvm_emulate.h File 15.23 KB 0644
kvm_guest.h File 172 B 0644
kvm_host.h File 42.72 KB 0644
kvm_page_track.h File 2.48 KB 0644
kvm_para.h File 3 KB 0644
kvmclock.h File 170 B 0644
linkage.h File 581 B 0644
livepatch.h File 1.12 KB 0644
local.h File 3.83 KB 0644
local64.h File 33 B 0644
mach_timer.h File 1.55 KB 0644
mach_traps.h File 1013 B 0644
math_emu.h File 395 B 0644
mc146818rtc.h File 2.76 KB 0644
mce.h File 12.54 KB 0644
mem_encrypt.h File 2.83 KB 0644
microcode.h File 4.14 KB 0644
microcode_amd.h File 1.41 KB 0644
microcode_intel.h File 2.46 KB 0644
misc.h File 143 B 0644
mmconfig.h File 374 B 0644
mmu.h File 1.57 KB 0644
mmu_context.h File 10.27 KB 0644
mmx.h File 337 B 0644
mmzone.h File 129 B 0644
mmzone_32.h File 1.16 KB 0644
mmzone_64.h File 430 B 0644
module.h File 2.05 KB 0644
mpspec.h File 3.93 KB 0644
mpspec_def.h File 3.93 KB 0644
mpx.h File 2.97 KB 0644
mshyperv.h File 10.69 KB 0644
msi.h File 392 B 0644
msidef.h File 1.77 KB 0644
msr-index.h File 30.92 KB 0644
msr-trace.h File 1.35 KB 0644
msr.h File 10.85 KB 0644
mtrr.h File 4.62 KB 0644
mwait.h File 3.74 KB 0644
nmi.h File 1.39 KB 0644
nops.h File 4.31 KB 0644
nospec-branch.h File 11.49 KB 0644
numa.h File 2.18 KB 0644
numa_32.h File 256 B 0644
olpc.h File 3.16 KB 0644
olpc_ofw.h File 1.1 KB 0644
orc_lookup.h File 1.63 KB 0644
orc_types.h File 3.47 KB 0644
page.h File 2.18 KB 0644
page_32.h File 1.01 KB 0644
page_32_types.h File 1.7 KB 0644
page_64.h File 1.42 KB 0644
page_64_types.h File 2.34 KB 0644
page_types.h File 2.29 KB 0644
paravirt.h File 23.31 KB 0644
paravirt_types.h File 22.15 KB 0644
parport.h File 314 B 0644
pat.h File 768 B 0644
pci-direct.h File 995 B 0644
pci-functions.h File 654 B 0644
pci.h File 3.51 KB 0644
pci_64.h File 684 B 0644
pci_x86.h File 5.71 KB 0644
percpu.h File 18.97 KB 0644
perf_event.h File 8.82 KB 0644
perf_event_p4.h File 26.1 KB 0644
pgalloc.h File 5.57 KB 0644
pgtable-2level.h File 2.75 KB 0644
pgtable-2level_types.h File 867 B 0644
pgtable-3level.h File 10.24 KB 0644
pgtable-3level_types.h File 1.06 KB 0644
pgtable-invert.h File 1.07 KB 0644
pgtable.h File 33.91 KB 0644
pgtable_32.h File 3.1 KB 0644
pgtable_32_types.h File 2.01 KB 0644
pgtable_64.h File 7.37 KB 0644
pgtable_64_types.h File 3.67 KB 0644
pgtable_types.h File 16.75 KB 0644
pkeys.h File 3.17 KB 0644
platform_sst_audio.h File 3.18 KB 0644
pm-trace.h File 611 B 0644
posix_types.h File 144 B 0644
preempt.h File 3.04 KB 0644
probe_roms.h File 273 B 0644
processor-cyrix.h File 879 B 0644
processor-flags.h File 1.71 KB 0644
processor.h File 24.54 KB 0644
prom.h File 1 KB 0644
proto.h File 1003 B 0644
pti.h File 369 B 0644
ptrace.h File 8.52 KB 0644
purgatory.h File 571 B 0644
pvclock-abi.h File 1.49 KB 0644
pvclock.h File 2.64 KB 0644
qrwlock.h File 199 B 0644
qspinlock.h File 2.54 KB 0644
qspinlock_paravirt.h File 1.85 KB 0644
realmode.h File 1.76 KB 0644
reboot.h File 850 B 0644
reboot_fixups.h File 183 B 0644
refcount.h File 2.83 KB 0644
required-features.h File 2.81 KB 0644
rio.h File 2.57 KB 0644
rmwcc.h File 1.62 KB 0644
rwsem.h File 7.02 KB 0644
seccomp.h File 510 B 0644
sections.h File 465 B 0644
segment.h File 9.47 KB 0644
serial.h File 1.11 KB 0644
set_memory.h File 3.86 KB 0644
setup.h File 3.4 KB 0644
setup_arch.h File 77 B 0644
shmparam.h File 193 B 0644
sigcontext.h File 261 B 0644
sigframe.h File 2.25 KB 0644
sighandling.h File 649 B 0644
signal.h File 2.37 KB 0644
simd.h File 287 B 0644
smap.h File 1.71 KB 0644
smp.h File 4.73 KB 0644
sparsemem.h File 1.01 KB 0644
spec-ctrl.h File 2.81 KB 0644
special_insns.h File 5.04 KB 0644
spinlock.h File 1.19 KB 0644
spinlock_types.h File 719 B 0644
sta2x11.h File 352 B 0644
stackprotector.h File 4.13 KB 0644
stacktrace.h File 2.57 KB 0644
string.h File 129 B 0644
string_32.h File 7.74 KB 0644
string_64.h File 3.56 KB 0644
suspend.h File 131 B 0644
suspend_32.h File 822 B 0644
suspend_64.h File 1.79 KB 0644
svm.h File 7.08 KB 0644
swiotlb.h File 991 B 0644
switch_to.h File 2.98 KB 0644
sync_bitops.h File 3.42 KB 0644
sys_ia32.h File 1.8 KB 0644
syscall.h File 5.14 KB 0644
syscalls.h File 1.39 KB 0644
sysfb.h File 2.54 KB 0644
tce.h File 1.68 KB 0644
text-patching.h File 2.3 KB 0644
thread_info.h File 9.33 KB 0644
time.h File 331 B 0644
timer.h File 1 KB 0644
timex.h File 546 B 0644
tlb.h File 1.05 KB 0644
tlbbatch.h File 332 B 0644
tlbflush.h File 17.09 KB 0644
topology.h File 4.84 KB 0644
trace_clock.h File 406 B 0644
traps.h File 5.74 KB 0644
tsc.h File 1.93 KB 0644
uaccess.h File 21.69 KB 0644
uaccess_32.h File 1.54 KB 0644
uaccess_64.h File 5.32 KB 0644
umip.h File 329 B 0644
unaligned.h File 345 B 0644
unistd.h File 1.45 KB 0644
unwind.h File 3.13 KB 0644
unwind_hints.h File 3.01 KB 0644
uprobes.h File 1.57 KB 0644
user.h File 2.2 KB 0644
user32.h File 2.11 KB 0644
user_32.h File 4.92 KB 0644
user_64.h File 5.21 KB 0644
vdso.h File 1.09 KB 0644
vga.h File 740 B 0644
vgtod.h File 2.13 KB 0644
virtext.h File 2.62 KB 0644
vm86.h File 2.16 KB 0644
vmx.h File 23.5 KB 0644
vsyscall.h File 635 B 0644
vvar.h File 1.38 KB 0644
word-at-a-time.h File 2.54 KB 0644
x86_init.h File 9.25 KB 0644
xor.h File 10.26 KB 0644
xor_32.h File 14.4 KB 0644
xor_64.h File 716 B 0644
xor_avx.h File 4.5 KB 0644