Contributors: 37
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Jeremy Fitzhardinge |
937 |
36.69% |
31 |
20.81% |
| Juergen Gross |
600 |
23.49% |
16 |
10.74% |
| Rusty Russell |
248 |
9.71% |
5 |
3.36% |
| Kirill A. Shutemov |
165 |
6.46% |
6 |
4.03% |
| Eduardo Pereira Habkost |
85 |
3.33% |
2 |
1.34% |
| Andrew Lutomirski |
75 |
2.94% |
10 |
6.71% |
| Glauber de Oliveira Costa |
69 |
2.70% |
7 |
4.70% |
| Xin Li (Intel) |
54 |
2.11% |
3 |
2.01% |
| Linus Torvalds (pre-git) |
43 |
1.68% |
7 |
4.70% |
| Zachary Amsden |
36 |
1.41% |
8 |
5.37% |
| Andi Kleen |
33 |
1.29% |
4 |
2.68% |
| Peter Zijlstra |
28 |
1.10% |
9 |
6.04% |
| Thomas Gleixner |
27 |
1.06% |
8 |
5.37% |
| Boris Ostrovsky |
26 |
1.02% |
2 |
1.34% |
| Brijesh Singh |
25 |
0.98% |
1 |
0.67% |
| Ingo Molnar |
18 |
0.70% |
8 |
5.37% |
| Dave Hansen |
15 |
0.59% |
1 |
0.67% |
| Aneesh Kumar K.V |
9 |
0.35% |
2 |
1.34% |
| David S. Miller |
8 |
0.31% |
1 |
0.67% |
| David Howells |
7 |
0.27% |
1 |
0.67% |
| Uros Bizjak |
6 |
0.23% |
1 |
0.67% |
| Thomas Huth |
6 |
0.23% |
1 |
0.67% |
| Vincent Hanquez |
4 |
0.16% |
1 |
0.67% |
| Dan J Williams |
4 |
0.16% |
1 |
0.67% |
| Josh Poimboeuf |
3 |
0.12% |
1 |
0.67% |
| Rik Van Riel |
3 |
0.12% |
1 |
0.67% |
| Joe Perches |
3 |
0.12% |
1 |
0.67% |
| H. Peter Anvin |
3 |
0.12% |
1 |
0.67% |
| Nadav Amit |
3 |
0.12% |
1 |
0.67% |
| Roland McGrath |
3 |
0.12% |
1 |
0.67% |
| Len Brown |
2 |
0.08% |
1 |
0.67% |
| Tony Luck |
1 |
0.04% |
1 |
0.67% |
| Masami Hiramatsu |
1 |
0.04% |
1 |
0.67% |
| Greg Kroah-Hartman |
1 |
0.04% |
1 |
0.67% |
| Konrad Rzeszutek Wilk |
1 |
0.04% |
1 |
0.67% |
| Cliff Wickman |
1 |
0.04% |
1 |
0.67% |
| Anton Vasilyev |
1 |
0.04% |
1 |
0.67% |
| Total |
2554 |
|
149 |
|
/* 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. */
#ifndef __ASSEMBLER__
#include <asm/paravirt-base.h>
#endif
#include <asm/paravirt_types.h>
#ifdef CONFIG_PARAVIRT
#include <asm/pgtable_types.h>
#include <asm/asm.h>
#include <asm/nospec-branch.h>
#ifndef __ASSEMBLER__
#include <linux/types.h>
#include <linux/cpumask.h>
#include <asm/frame.h>
/* The paravirtualized I/O functions */
static inline void slow_down_io(void)
{
PVOP_VCALL0(pv_ops, cpu.io_delay);
#ifdef REALLY_SLOW_IO
PVOP_VCALL0(pv_ops, cpu.io_delay);
PVOP_VCALL0(pv_ops, cpu.io_delay);
PVOP_VCALL0(pv_ops, cpu.io_delay);
#endif
}
void native_flush_tlb_local(void);
void native_flush_tlb_global(void);
void native_flush_tlb_one_user(unsigned long addr);
void native_flush_tlb_multi(const struct cpumask *cpumask,
const struct flush_tlb_info *info);
static inline void __flush_tlb_local(void)
{
PVOP_VCALL0(pv_ops, mmu.flush_tlb_user);
}
static inline void __flush_tlb_global(void)
{
PVOP_VCALL0(pv_ops, mmu.flush_tlb_kernel);
}
static inline void __flush_tlb_one_user(unsigned long addr)
{
PVOP_VCALL1(pv_ops, mmu.flush_tlb_one_user, addr);
}
static inline void __flush_tlb_multi(const struct cpumask *cpumask,
const struct flush_tlb_info *info)
{
PVOP_VCALL2(pv_ops, mmu.flush_tlb_multi, cpumask, info);
}
static inline void paravirt_arch_exit_mmap(struct mm_struct *mm)
{
PVOP_VCALL1(pv_ops, mmu.exit_mmap, mm);
}
static inline void notify_page_enc_status_changed(unsigned long pfn,
int npages, bool enc)
{
PVOP_VCALL3(pv_ops, mmu.notify_page_enc_status_changed, pfn, npages, enc);
}
static __always_inline void arch_safe_halt(void)
{
PVOP_VCALL0(pv_ops, irq.safe_halt);
}
static inline void halt(void)
{
PVOP_VCALL0(pv_ops, irq.halt);
}
#ifdef CONFIG_PARAVIRT_XXL
static inline void load_sp0(unsigned long sp0)
{
PVOP_VCALL1(pv_ops, cpu.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_ops, cpu.cpuid, eax, ebx, ecx, edx);
}
/*
* These special macros can be used to get or set a debugging register
*/
static __always_inline unsigned long paravirt_get_debugreg(int reg)
{
return PVOP_CALL1(unsigned long, pv_ops, cpu.get_debugreg, reg);
}
#define get_debugreg(var, reg) var = paravirt_get_debugreg(reg)
static __always_inline void set_debugreg(unsigned long val, int reg)
{
PVOP_VCALL2(pv_ops, cpu.set_debugreg, reg, val);
}
static inline unsigned long read_cr0(void)
{
return PVOP_CALL0(unsigned long, pv_ops, cpu.read_cr0);
}
static inline void write_cr0(unsigned long x)
{
PVOP_VCALL1(pv_ops, cpu.write_cr0, x);
}
static __always_inline unsigned long read_cr2(void)
{
return PVOP_ALT_CALLEE0(unsigned long, pv_ops, mmu.read_cr2,
"mov %%cr2, %%rax", ALT_NOT_XEN);
}
static __always_inline void write_cr2(unsigned long x)
{
PVOP_VCALL1(pv_ops, mmu.write_cr2, x);
}
static inline unsigned long __read_cr3(void)
{
return PVOP_ALT_CALL0(unsigned long, pv_ops, mmu.read_cr3,
"mov %%cr3, %%rax", ALT_NOT_XEN);
}
static inline void write_cr3(unsigned long x)
{
PVOP_ALT_VCALL1(pv_ops, mmu.write_cr3, x, "mov %%rdi, %%cr3", ALT_NOT_XEN);
}
static inline void __write_cr4(unsigned long x)
{
PVOP_VCALL1(pv_ops, cpu.write_cr4, x);
}
static inline u64 paravirt_read_msr(u32 msr)
{
return PVOP_CALL1(u64, pv_ops, cpu.read_msr, msr);
}
static inline void paravirt_write_msr(u32 msr, u64 val)
{
PVOP_VCALL2(pv_ops, cpu.write_msr, msr, val);
}
static inline int paravirt_read_msr_safe(u32 msr, u64 *val)
{
return PVOP_CALL2(int, pv_ops, cpu.read_msr_safe, msr, val);
}
static inline int paravirt_write_msr_safe(u32 msr, u64 val)
{
return PVOP_CALL2(int, pv_ops, cpu.write_msr_safe, msr, val);
}
#define rdmsr(msr, val1, val2) \
do { \
u64 _l = paravirt_read_msr(msr); \
val1 = (u32)_l; \
val2 = _l >> 32; \
} while (0)
static __always_inline void wrmsr(u32 msr, u32 low, u32 high)
{
paravirt_write_msr(msr, (u64)high << 32 | low);
}
#define rdmsrq(msr, val) \
do { \
val = paravirt_read_msr(msr); \
} while (0)
static inline void wrmsrq(u32 msr, u64 val)
{
paravirt_write_msr(msr, val);
}
static inline int wrmsrq_safe(u32 msr, u64 val)
{
return paravirt_write_msr_safe(msr, val);
}
/* rdmsr with exception handling */
#define rdmsr_safe(msr, a, b) \
({ \
u64 _l; \
int _err = paravirt_read_msr_safe((msr), &_l); \
(*a) = (u32)_l; \
(*b) = (u32)(_l >> 32); \
_err; \
})
static __always_inline int rdmsrq_safe(u32 msr, u64 *p)
{
return paravirt_read_msr_safe(msr, p);
}
static __always_inline u64 rdpmc(int counter)
{
return PVOP_CALL1(u64, pv_ops, cpu.read_pmc, counter);
}
static inline void paravirt_alloc_ldt(struct desc_struct *ldt, unsigned entries)
{
PVOP_VCALL2(pv_ops, cpu.alloc_ldt, ldt, entries);
}
static inline void paravirt_free_ldt(struct desc_struct *ldt, unsigned entries)
{
PVOP_VCALL2(pv_ops, cpu.free_ldt, ldt, entries);
}
static inline void load_TR_desc(void)
{
PVOP_VCALL0(pv_ops, cpu.load_tr_desc);
}
static inline void load_gdt(const struct desc_ptr *dtr)
{
PVOP_VCALL1(pv_ops, cpu.load_gdt, dtr);
}
static inline void load_idt(const struct desc_ptr *dtr)
{
PVOP_VCALL1(pv_ops, cpu.load_idt, dtr);
}
static inline void set_ldt(const void *addr, unsigned entries)
{
PVOP_VCALL2(pv_ops, cpu.set_ldt, addr, entries);
}
static inline unsigned long paravirt_store_tr(void)
{
return PVOP_CALL0(unsigned long, pv_ops, cpu.store_tr);
}
#define store_tr(tr) ((tr) = paravirt_store_tr())
static inline void load_TLS(struct thread_struct *t, unsigned cpu)
{
PVOP_VCALL2(pv_ops, cpu.load_tls, t, cpu);
}
static inline void load_gs_index(unsigned int gs)
{
PVOP_VCALL1(pv_ops, cpu.load_gs_index, gs);
}
static inline void write_ldt_entry(struct desc_struct *dt, int entry,
const void *desc)
{
PVOP_VCALL3(pv_ops, cpu.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_ops, cpu.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_ops, cpu.write_idt_entry, dt, entry, g);
}
#ifdef CONFIG_X86_IOPL_IOPERM
static inline void tss_invalidate_io_bitmap(void)
{
PVOP_VCALL0(pv_ops, cpu.invalidate_io_bitmap);
}
static inline void tss_update_io_bitmap(void)
{
PVOP_VCALL0(pv_ops, cpu.update_io_bitmap);
}
#endif
static inline void paravirt_enter_mmap(struct mm_struct *next)
{
PVOP_VCALL1(pv_ops, mmu.enter_mmap, next);
}
static inline int paravirt_pgd_alloc(struct mm_struct *mm)
{
return PVOP_CALL1(int, pv_ops, mmu.pgd_alloc, mm);
}
static inline void paravirt_pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
PVOP_VCALL2(pv_ops, mmu.pgd_free, mm, pgd);
}
static inline void paravirt_alloc_pte(struct mm_struct *mm, unsigned long pfn)
{
PVOP_VCALL2(pv_ops, mmu.alloc_pte, mm, pfn);
}
static inline void paravirt_release_pte(unsigned long pfn)
{
PVOP_VCALL1(pv_ops, mmu.release_pte, pfn);
}
static inline void paravirt_alloc_pmd(struct mm_struct *mm, unsigned long pfn)
{
PVOP_VCALL2(pv_ops, mmu.alloc_pmd, mm, pfn);
}
static inline void paravirt_release_pmd(unsigned long pfn)
{
PVOP_VCALL1(pv_ops, mmu.release_pmd, pfn);
}
static inline void paravirt_alloc_pud(struct mm_struct *mm, unsigned long pfn)
{
PVOP_VCALL2(pv_ops, mmu.alloc_pud, mm, pfn);
}
static inline void paravirt_release_pud(unsigned long pfn)
{
PVOP_VCALL1(pv_ops, mmu.release_pud, pfn);
}
static inline void paravirt_alloc_p4d(struct mm_struct *mm, unsigned long pfn)
{
PVOP_VCALL2(pv_ops, mmu.alloc_p4d, mm, pfn);
}
static inline void paravirt_release_p4d(unsigned long pfn)
{
PVOP_VCALL1(pv_ops, mmu.release_p4d, pfn);
}
static inline pte_t __pte(pteval_t val)
{
return (pte_t) { PVOP_ALT_CALLEE1(pteval_t, pv_ops, mmu.make_pte, val,
"mov %%rdi, %%rax", ALT_NOT_XEN) };
}
static inline pteval_t pte_val(pte_t pte)
{
return PVOP_ALT_CALLEE1(pteval_t, pv_ops, mmu.pte_val, pte.pte,
"mov %%rdi, %%rax", ALT_NOT_XEN);
}
static inline pgd_t __pgd(pgdval_t val)
{
return (pgd_t) { PVOP_ALT_CALLEE1(pgdval_t, pv_ops, mmu.make_pgd, val,
"mov %%rdi, %%rax", ALT_NOT_XEN) };
}
static inline pgdval_t pgd_val(pgd_t pgd)
{
return PVOP_ALT_CALLEE1(pgdval_t, pv_ops, mmu.pgd_val, pgd.pgd,
"mov %%rdi, %%rax", ALT_NOT_XEN);
}
#define __HAVE_ARCH_PTEP_MODIFY_PROT_TRANSACTION
static inline pte_t ptep_modify_prot_start(struct vm_area_struct *vma, unsigned long addr,
pte_t *ptep)
{
pteval_t ret;
ret = PVOP_CALL3(pteval_t, pv_ops, mmu.ptep_modify_prot_start, vma, addr, ptep);
return (pte_t) { .pte = ret };
}
static inline void ptep_modify_prot_commit(struct vm_area_struct *vma, unsigned long addr,
pte_t *ptep, pte_t old_pte, pte_t pte)
{
PVOP_VCALL4(pv_ops, mmu.ptep_modify_prot_commit, vma, addr, ptep, pte.pte);
}
static inline void set_pte(pte_t *ptep, pte_t pte)
{
PVOP_VCALL2(pv_ops, mmu.set_pte, ptep, pte.pte);
}
static inline void set_pmd(pmd_t *pmdp, pmd_t pmd)
{
PVOP_VCALL2(pv_ops, mmu.set_pmd, pmdp, native_pmd_val(pmd));
}
static inline pmd_t __pmd(pmdval_t val)
{
return (pmd_t) { PVOP_ALT_CALLEE1(pmdval_t, pv_ops, mmu.make_pmd, val,
"mov %%rdi, %%rax", ALT_NOT_XEN) };
}
static inline pmdval_t pmd_val(pmd_t pmd)
{
return PVOP_ALT_CALLEE1(pmdval_t, pv_ops, mmu.pmd_val, pmd.pmd,
"mov %%rdi, %%rax", ALT_NOT_XEN);
}
static inline void set_pud(pud_t *pudp, pud_t pud)
{
PVOP_VCALL2(pv_ops, mmu.set_pud, pudp, native_pud_val(pud));
}
static inline pud_t __pud(pudval_t val)
{
pudval_t ret;
ret = PVOP_ALT_CALLEE1(pudval_t, pv_ops, mmu.make_pud, val,
"mov %%rdi, %%rax", ALT_NOT_XEN);
return (pud_t) { ret };
}
static inline pudval_t pud_val(pud_t pud)
{
return PVOP_ALT_CALLEE1(pudval_t, pv_ops, mmu.pud_val, pud.pud,
"mov %%rdi, %%rax", ALT_NOT_XEN);
}
static inline void pud_clear(pud_t *pudp)
{
set_pud(pudp, native_make_pud(0));
}
static inline void set_p4d(p4d_t *p4dp, p4d_t p4d)
{
p4dval_t val = native_p4d_val(p4d);
PVOP_VCALL2(pv_ops, mmu.set_p4d, p4dp, val);
}
static inline p4d_t __p4d(p4dval_t val)
{
p4dval_t ret = PVOP_ALT_CALLEE1(p4dval_t, pv_ops, mmu.make_p4d, val,
"mov %%rdi, %%rax", ALT_NOT_XEN);
return (p4d_t) { ret };
}
static inline p4dval_t p4d_val(p4d_t p4d)
{
return PVOP_ALT_CALLEE1(p4dval_t, pv_ops, mmu.p4d_val, p4d.p4d,
"mov %%rdi, %%rax", ALT_NOT_XEN);
}
static inline void __set_pgd(pgd_t *pgdp, pgd_t pgd)
{
PVOP_VCALL2(pv_ops, mmu.set_pgd, pgdp, native_pgd_val(pgd));
}
#define set_pgd(pgdp, pgdval) do { \
if (pgtable_l5_enabled()) \
__set_pgd(pgdp, pgdval); \
else \
set_p4d((p4d_t *)(pgdp), (p4d_t) { (pgdval).pgd }); \
} while (0)
#define pgd_clear(pgdp) do { \
if (pgtable_l5_enabled()) \
set_pgd(pgdp, native_make_pgd(0)); \
} while (0)
static inline void p4d_clear(p4d_t *p4dp)
{
set_p4d(p4dp, native_make_p4d(0));
}
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(ptep, native_make_pte(0));
}
static inline void pmd_clear(pmd_t *pmdp)
{
set_pmd(pmdp, native_make_pmd(0));
}
#define __HAVE_ARCH_START_CONTEXT_SWITCH
static inline void arch_start_context_switch(struct task_struct *prev)
{
PVOP_VCALL1(pv_ops, cpu.start_context_switch, prev);
}
static inline void arch_end_context_switch(struct task_struct *next)
{
PVOP_VCALL1(pv_ops, cpu.end_context_switch, next);
}
static inline void arch_enter_lazy_mmu_mode(void)
{
PVOP_VCALL0(pv_ops, mmu.lazy_mode.enter);
}
static inline void arch_leave_lazy_mmu_mode(void)
{
PVOP_VCALL0(pv_ops, mmu.lazy_mode.leave);
}
static inline void arch_flush_lazy_mmu_mode(void)
{
PVOP_VCALL0(pv_ops, mmu.lazy_mode.flush);
}
static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx,
phys_addr_t phys, pgprot_t flags)
{
pv_ops.mmu.set_fixmap(idx, phys, flags);
}
static __always_inline unsigned long arch_local_save_flags(void)
{
return PVOP_ALT_CALLEE0(unsigned long, pv_ops, irq.save_fl, "pushf; pop %%rax",
ALT_NOT_XEN);
}
static __always_inline void arch_local_irq_disable(void)
{
PVOP_ALT_VCALLEE0(pv_ops, irq.irq_disable, "cli", ALT_NOT_XEN);
}
static __always_inline void arch_local_irq_enable(void)
{
PVOP_ALT_VCALLEE0(pv_ops, irq.irq_enable, "sti", ALT_NOT_XEN);
}
static __always_inline unsigned long arch_local_irq_save(void)
{
unsigned long f;
f = arch_local_save_flags();
arch_local_irq_disable();
return f;
}
#endif
#else /* __ASSEMBLER__ */
#ifdef CONFIG_X86_64
#ifdef CONFIG_PARAVIRT_XXL
#ifdef CONFIG_DEBUG_ENTRY
#define PARA_INDIRECT(addr) *addr(%rip)
.macro PARA_IRQ_save_fl
ANNOTATE_RETPOLINE_SAFE;
call PARA_INDIRECT(pv_ops+PV_IRQ_save_fl);
.endm
#define SAVE_FLAGS ALTERNATIVE_2 "PARA_IRQ_save_fl", \
"ALT_CALL_INSTR", ALT_CALL_ALWAYS, \
"pushf; pop %rax", ALT_NOT_XEN
#endif
#endif /* CONFIG_PARAVIRT_XXL */
#endif /* CONFIG_X86_64 */
#endif /* __ASSEMBLER__ */
#else /* CONFIG_PARAVIRT */
# define default_banner x86_init_noop
#endif /* !CONFIG_PARAVIRT */
#ifndef __ASSEMBLER__
#ifndef CONFIG_PARAVIRT_XXL
static inline void paravirt_enter_mmap(struct mm_struct *mm)
{
}
#endif
#ifndef CONFIG_PARAVIRT
static inline void paravirt_arch_exit_mmap(struct mm_struct *mm)
{
}
#endif
#endif /* __ASSEMBLER__ */
#endif /* _ASM_X86_PARAVIRT_H */