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-rw-r--r--include/asm-i386/paravirt.h505
1 files changed, 0 insertions, 505 deletions
diff --git a/include/asm-i386/paravirt.h b/include/asm-i386/paravirt.h
deleted file mode 100644
index 9f06265065f..00000000000
--- a/include/asm-i386/paravirt.h
+++ /dev/null
@@ -1,505 +0,0 @@
-#ifndef __ASM_PARAVIRT_H
-#define __ASM_PARAVIRT_H
-/* Various instructions on x86 need to be replaced for
- * para-virtualization: those hooks are defined here. */
-#include <linux/linkage.h>
-#include <linux/stringify.h>
-#include <asm/page.h>
-
-#ifdef CONFIG_PARAVIRT
-/* These are the most performance critical ops, so we want to be able to patch
- * callers */
-#define PARAVIRT_IRQ_DISABLE 0
-#define PARAVIRT_IRQ_ENABLE 1
-#define PARAVIRT_RESTORE_FLAGS 2
-#define PARAVIRT_SAVE_FLAGS 3
-#define PARAVIRT_SAVE_FLAGS_IRQ_DISABLE 4
-#define PARAVIRT_INTERRUPT_RETURN 5
-#define PARAVIRT_STI_SYSEXIT 6
-
-/* Bitmask of what can be clobbered: usually at least eax. */
-#define CLBR_NONE 0x0
-#define CLBR_EAX 0x1
-#define CLBR_ECX 0x2
-#define CLBR_EDX 0x4
-#define CLBR_ANY 0x7
-
-#ifndef __ASSEMBLY__
-struct thread_struct;
-struct Xgt_desc_struct;
-struct tss_struct;
-struct mm_struct;
-struct paravirt_ops
-{
- unsigned int kernel_rpl;
- int paravirt_enabled;
- const char *name;
-
- /*
- * 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 *firstinsn, unsigned len);
-
- void (*arch_setup)(void);
- char *(*memory_setup)(void);
- void (*init_IRQ)(void);
-
- void (*banner)(void);
-
- unsigned long (*get_wallclock)(void);
- int (*set_wallclock)(unsigned long);
- void (*time_init)(void);
-
- /* All the function pointers here are declared as "fastcall"
- so that we get a specific register-based calling
- convention. This makes it easier to implement inline
- assembler replacements. */
-
- void (fastcall *cpuid)(unsigned int *eax, unsigned int *ebx,
- unsigned int *ecx, unsigned int *edx);
-
- unsigned long (fastcall *get_debugreg)(int regno);
- void (fastcall *set_debugreg)(int regno, unsigned long value);
-
- void (fastcall *clts)(void);
-
- unsigned long (fastcall *read_cr0)(void);
- void (fastcall *write_cr0)(unsigned long);
-
- unsigned long (fastcall *read_cr2)(void);
- void (fastcall *write_cr2)(unsigned long);
-
- unsigned long (fastcall *read_cr3)(void);
- void (fastcall *write_cr3)(unsigned long);
-
- unsigned long (fastcall *read_cr4_safe)(void);
- unsigned long (fastcall *read_cr4)(void);
- void (fastcall *write_cr4)(unsigned long);
-
- unsigned long (fastcall *save_fl)(void);
- void (fastcall *restore_fl)(unsigned long);
- void (fastcall *irq_disable)(void);
- void (fastcall *irq_enable)(void);
- void (fastcall *safe_halt)(void);
- void (fastcall *halt)(void);
- void (fastcall *wbinvd)(void);
-
- /* err = 0/-EFAULT. wrmsr returns 0/-EFAULT. */
- u64 (fastcall *read_msr)(unsigned int msr, int *err);
- int (fastcall *write_msr)(unsigned int msr, u64 val);
-
- u64 (fastcall *read_tsc)(void);
- u64 (fastcall *read_pmc)(void);
-
- void (fastcall *load_tr_desc)(void);
- void (fastcall *load_gdt)(const struct Xgt_desc_struct *);
- void (fastcall *load_idt)(const struct Xgt_desc_struct *);
- void (fastcall *store_gdt)(struct Xgt_desc_struct *);
- void (fastcall *store_idt)(struct Xgt_desc_struct *);
- void (fastcall *set_ldt)(const void *desc, unsigned entries);
- unsigned long (fastcall *store_tr)(void);
- void (fastcall *load_tls)(struct thread_struct *t, unsigned int cpu);
- void (fastcall *write_ldt_entry)(void *dt, int entrynum,
- u32 low, u32 high);
- void (fastcall *write_gdt_entry)(void *dt, int entrynum,
- u32 low, u32 high);
- void (fastcall *write_idt_entry)(void *dt, int entrynum,
- u32 low, u32 high);
- void (fastcall *load_esp0)(struct tss_struct *tss,
- struct thread_struct *thread);
-
- void (fastcall *set_iopl_mask)(unsigned mask);
-
- void (fastcall *io_delay)(void);
- void (*const_udelay)(unsigned long loops);
-
-#ifdef CONFIG_X86_LOCAL_APIC
- void (fastcall *apic_write)(unsigned long reg, unsigned long v);
- void (fastcall *apic_write_atomic)(unsigned long reg, unsigned long v);
- unsigned long (fastcall *apic_read)(unsigned long reg);
-#endif
-
- void (fastcall *flush_tlb_user)(void);
- void (fastcall *flush_tlb_kernel)(void);
- void (fastcall *flush_tlb_single)(u32 addr);
-
- void (fastcall *set_pte)(pte_t *ptep, pte_t pteval);
- void (fastcall *set_pte_at)(struct mm_struct *mm, u32 addr, pte_t *ptep, pte_t pteval);
- void (fastcall *set_pmd)(pmd_t *pmdp, pmd_t pmdval);
- void (fastcall *pte_update)(struct mm_struct *mm, u32 addr, pte_t *ptep);
- void (fastcall *pte_update_defer)(struct mm_struct *mm, u32 addr, pte_t *ptep);
-#ifdef CONFIG_X86_PAE
- void (fastcall *set_pte_atomic)(pte_t *ptep, pte_t pteval);
- void (fastcall *set_pte_present)(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte);
- void (fastcall *set_pud)(pud_t *pudp, pud_t pudval);
- void (fastcall *pte_clear)(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
- void (fastcall *pmd_clear)(pmd_t *pmdp);
-#endif
-
- /* These two are jmp to, not actually called. */
- void (fastcall *irq_enable_sysexit)(void);
- void (fastcall *iret)(void);
-};
-
-/* Mark a paravirt probe function. */
-#define paravirt_probe(fn) \
- static asmlinkage void (*__paravirtprobe_##fn)(void) __attribute_used__ \
- __attribute__((__section__(".paravirtprobe"))) = fn
-
-extern struct paravirt_ops paravirt_ops;
-
-#define paravirt_enabled() (paravirt_ops.paravirt_enabled)
-
-static inline void load_esp0(struct tss_struct *tss,
- struct thread_struct *thread)
-{
- paravirt_ops.load_esp0(tss, thread);
-}
-
-#define ARCH_SETUP paravirt_ops.arch_setup();
-static inline unsigned long get_wallclock(void)
-{
- return paravirt_ops.get_wallclock();
-}
-
-static inline int set_wallclock(unsigned long nowtime)
-{
- return paravirt_ops.set_wallclock(nowtime);
-}
-
-static inline void do_time_init(void)
-{
- return paravirt_ops.time_init();
-}
-
-/* The paravirtualized CPUID instruction. */
-static inline void __cpuid(unsigned int *eax, unsigned int *ebx,
- unsigned int *ecx, unsigned int *edx)
-{
- paravirt_ops.cpuid(eax, ebx, ecx, edx);
-}
-
-/*
- * These special macros can be used to get or set a debugging register
- */
-#define get_debugreg(var, reg) var = paravirt_ops.get_debugreg(reg)
-#define set_debugreg(val, reg) paravirt_ops.set_debugreg(reg, val)
-
-#define clts() paravirt_ops.clts()
-
-#define read_cr0() paravirt_ops.read_cr0()
-#define write_cr0(x) paravirt_ops.write_cr0(x)
-
-#define read_cr2() paravirt_ops.read_cr2()
-#define write_cr2(x) paravirt_ops.write_cr2(x)
-
-#define read_cr3() paravirt_ops.read_cr3()
-#define write_cr3(x) paravirt_ops.write_cr3(x)
-
-#define read_cr4() paravirt_ops.read_cr4()
-#define read_cr4_safe(x) paravirt_ops.read_cr4_safe()
-#define write_cr4(x) paravirt_ops.write_cr4(x)
-
-static inline void raw_safe_halt(void)
-{
- paravirt_ops.safe_halt();
-}
-
-static inline void halt(void)
-{
- paravirt_ops.safe_halt();
-}
-#define wbinvd() paravirt_ops.wbinvd()
-
-#define get_kernel_rpl() (paravirt_ops.kernel_rpl)
-
-#define rdmsr(msr,val1,val2) do { \
- int _err; \
- u64 _l = paravirt_ops.read_msr(msr,&_err); \
- val1 = (u32)_l; \
- val2 = _l >> 32; \
-} while(0)
-
-#define wrmsr(msr,val1,val2) do { \
- u64 _l = ((u64)(val2) << 32) | (val1); \
- paravirt_ops.write_msr((msr), _l); \
-} while(0)
-
-#define rdmsrl(msr,val) do { \
- int _err; \
- val = paravirt_ops.read_msr((msr),&_err); \
-} while(0)
-
-#define wrmsrl(msr,val) (paravirt_ops.write_msr((msr),(val)))
-#define wrmsr_safe(msr,a,b) ({ \
- u64 _l = ((u64)(b) << 32) | (a); \
- paravirt_ops.write_msr((msr),_l); \
-})
-
-/* rdmsr with exception handling */
-#define rdmsr_safe(msr,a,b) ({ \
- int _err; \
- u64 _l = paravirt_ops.read_msr(msr,&_err); \
- (*a) = (u32)_l; \
- (*b) = _l >> 32; \
- _err; })
-
-#define rdtsc(low,high) do { \
- u64 _l = paravirt_ops.read_tsc(); \
- low = (u32)_l; \
- high = _l >> 32; \
-} while(0)
-
-#define rdtscl(low) do { \
- u64 _l = paravirt_ops.read_tsc(); \
- low = (int)_l; \
-} while(0)
-
-#define rdtscll(val) (val = paravirt_ops.read_tsc())
-
-#define write_tsc(val1,val2) wrmsr(0x10, val1, val2)
-
-#define rdpmc(counter,low,high) do { \
- u64 _l = paravirt_ops.read_pmc(); \
- low = (u32)_l; \
- high = _l >> 32; \
-} while(0)
-
-#define load_TR_desc() (paravirt_ops.load_tr_desc())
-#define load_gdt(dtr) (paravirt_ops.load_gdt(dtr))
-#define load_idt(dtr) (paravirt_ops.load_idt(dtr))
-#define set_ldt(addr, entries) (paravirt_ops.set_ldt((addr), (entries)))
-#define store_gdt(dtr) (paravirt_ops.store_gdt(dtr))
-#define store_idt(dtr) (paravirt_ops.store_idt(dtr))
-#define store_tr(tr) ((tr) = paravirt_ops.store_tr())
-#define load_TLS(t,cpu) (paravirt_ops.load_tls((t),(cpu)))
-#define write_ldt_entry(dt, entry, low, high) \
- (paravirt_ops.write_ldt_entry((dt), (entry), (low), (high)))
-#define write_gdt_entry(dt, entry, low, high) \
- (paravirt_ops.write_gdt_entry((dt), (entry), (low), (high)))
-#define write_idt_entry(dt, entry, low, high) \
- (paravirt_ops.write_idt_entry((dt), (entry), (low), (high)))
-#define set_iopl_mask(mask) (paravirt_ops.set_iopl_mask(mask))
-
-/* The paravirtualized I/O functions */
-static inline void slow_down_io(void) {
- paravirt_ops.io_delay();
-#ifdef REALLY_SLOW_IO
- paravirt_ops.io_delay();
- paravirt_ops.io_delay();
- paravirt_ops.io_delay();
-#endif
-}
-
-#ifdef CONFIG_X86_LOCAL_APIC
-/*
- * Basic functions accessing APICs.
- */
-static inline void apic_write(unsigned long reg, unsigned long v)
-{
- paravirt_ops.apic_write(reg,v);
-}
-
-static inline void apic_write_atomic(unsigned long reg, unsigned long v)
-{
- paravirt_ops.apic_write_atomic(reg,v);
-}
-
-static inline unsigned long apic_read(unsigned long reg)
-{
- return paravirt_ops.apic_read(reg);
-}
-#endif
-
-
-#define __flush_tlb() paravirt_ops.flush_tlb_user()
-#define __flush_tlb_global() paravirt_ops.flush_tlb_kernel()
-#define __flush_tlb_single(addr) paravirt_ops.flush_tlb_single(addr)
-
-static inline void set_pte(pte_t *ptep, pte_t pteval)
-{
- paravirt_ops.set_pte(ptep, pteval);
-}
-
-static inline void set_pte_at(struct mm_struct *mm, u32 addr, pte_t *ptep, pte_t pteval)
-{
- paravirt_ops.set_pte_at(mm, addr, ptep, pteval);
-}
-
-static inline void set_pmd(pmd_t *pmdp, pmd_t pmdval)
-{
- paravirt_ops.set_pmd(pmdp, pmdval);
-}
-
-static inline void pte_update(struct mm_struct *mm, u32 addr, pte_t *ptep)
-{
- paravirt_ops.pte_update(mm, addr, ptep);
-}
-
-static inline void pte_update_defer(struct mm_struct *mm, u32 addr, pte_t *ptep)
-{
- paravirt_ops.pte_update_defer(mm, addr, ptep);
-}
-
-#ifdef CONFIG_X86_PAE
-static inline void set_pte_atomic(pte_t *ptep, pte_t pteval)
-{
- paravirt_ops.set_pte_atomic(ptep, pteval);
-}
-
-static inline void set_pte_present(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte)
-{
- paravirt_ops.set_pte_present(mm, addr, ptep, pte);
-}
-
-static inline void set_pud(pud_t *pudp, pud_t pudval)
-{
- paravirt_ops.set_pud(pudp, pudval);
-}
-
-static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
-{
- paravirt_ops.pte_clear(mm, addr, ptep);
-}
-
-static inline void pmd_clear(pmd_t *pmdp)
-{
- paravirt_ops.pmd_clear(pmdp);
-}
-#endif
-
-/* These all sit in the .parainstructions section to tell us what to patch. */
-struct paravirt_patch {
- u8 *instr; /* original instructions */
- u8 instrtype; /* type of this instruction */
- u8 len; /* length of original instruction */
- u16 clobbers; /* what registers you may clobber */
-};
-
-#define paravirt_alt(insn_string, typenum, clobber) \
- "771:\n\t" insn_string "\n" "772:\n" \
- ".pushsection .parainstructions,\"a\"\n" \
- " .long 771b\n" \
- " .byte " __stringify(typenum) "\n" \
- " .byte 772b-771b\n" \
- " .short " __stringify(clobber) "\n" \
- ".popsection"
-
-static inline unsigned long __raw_local_save_flags(void)
-{
- unsigned long f;
-
- __asm__ __volatile__(paravirt_alt( "pushl %%ecx; pushl %%edx;"
- "call *%1;"
- "popl %%edx; popl %%ecx",
- PARAVIRT_SAVE_FLAGS, CLBR_NONE)
- : "=a"(f): "m"(paravirt_ops.save_fl)
- : "memory", "cc");
- return f;
-}
-
-static inline void raw_local_irq_restore(unsigned long f)
-{
- __asm__ __volatile__(paravirt_alt( "pushl %%ecx; pushl %%edx;"
- "call *%1;"
- "popl %%edx; popl %%ecx",
- PARAVIRT_RESTORE_FLAGS, CLBR_EAX)
- : "=a"(f) : "m" (paravirt_ops.restore_fl), "0"(f)
- : "memory", "cc");
-}
-
-static inline void raw_local_irq_disable(void)
-{
- __asm__ __volatile__(paravirt_alt( "pushl %%ecx; pushl %%edx;"
- "call *%0;"
- "popl %%edx; popl %%ecx",
- PARAVIRT_IRQ_DISABLE, CLBR_EAX)
- : : "m" (paravirt_ops.irq_disable)
- : "memory", "eax", "cc");
-}
-
-static inline void raw_local_irq_enable(void)
-{
- __asm__ __volatile__(paravirt_alt( "pushl %%ecx; pushl %%edx;"
- "call *%0;"
- "popl %%edx; popl %%ecx",
- PARAVIRT_IRQ_ENABLE, CLBR_EAX)
- : : "m" (paravirt_ops.irq_enable)
- : "memory", "eax", "cc");
-}
-
-static inline unsigned long __raw_local_irq_save(void)
-{
- unsigned long f;
-
- __asm__ __volatile__(paravirt_alt( "pushl %%ecx; pushl %%edx;"
- "call *%1; pushl %%eax;"
- "call *%2; popl %%eax;"
- "popl %%edx; popl %%ecx",
- PARAVIRT_SAVE_FLAGS_IRQ_DISABLE,
- CLBR_NONE)
- : "=a"(f)
- : "m" (paravirt_ops.save_fl),
- "m" (paravirt_ops.irq_disable)
- : "memory", "cc");
- return f;
-}
-
-#define CLI_STRING paravirt_alt("pushl %%ecx; pushl %%edx;" \
- "call *paravirt_ops+%c[irq_disable];" \
- "popl %%edx; popl %%ecx", \
- PARAVIRT_IRQ_DISABLE, CLBR_EAX)
-
-#define STI_STRING paravirt_alt("pushl %%ecx; pushl %%edx;" \
- "call *paravirt_ops+%c[irq_enable];" \
- "popl %%edx; popl %%ecx", \
- PARAVIRT_IRQ_ENABLE, CLBR_EAX)
-#define CLI_STI_CLOBBERS , "%eax"
-#define CLI_STI_INPUT_ARGS \
- , \
- [irq_disable] "i" (offsetof(struct paravirt_ops, irq_disable)), \
- [irq_enable] "i" (offsetof(struct paravirt_ops, irq_enable))
-
-#else /* __ASSEMBLY__ */
-
-#define PARA_PATCH(ptype, clobbers, ops) \
-771:; \
- ops; \
-772:; \
- .pushsection .parainstructions,"a"; \
- .long 771b; \
- .byte ptype; \
- .byte 772b-771b; \
- .short clobbers; \
- .popsection
-
-#define INTERRUPT_RETURN \
- PARA_PATCH(PARAVIRT_INTERRUPT_RETURN, CLBR_ANY, \
- jmp *%cs:paravirt_ops+PARAVIRT_iret)
-
-#define DISABLE_INTERRUPTS(clobbers) \
- PARA_PATCH(PARAVIRT_IRQ_DISABLE, clobbers, \
- pushl %ecx; pushl %edx; \
- call *paravirt_ops+PARAVIRT_irq_disable; \
- popl %edx; popl %ecx) \
-
-#define ENABLE_INTERRUPTS(clobbers) \
- PARA_PATCH(PARAVIRT_IRQ_ENABLE, clobbers, \
- pushl %ecx; pushl %edx; \
- call *%cs:paravirt_ops+PARAVIRT_irq_enable; \
- popl %edx; popl %ecx)
-
-#define ENABLE_INTERRUPTS_SYSEXIT \
- PARA_PATCH(PARAVIRT_STI_SYSEXIT, CLBR_ANY, \
- jmp *%cs:paravirt_ops+PARAVIRT_irq_enable_sysexit)
-
-#define GET_CR0_INTO_EAX \
- call *paravirt_ops+PARAVIRT_read_cr0
-
-#endif /* __ASSEMBLY__ */
-#endif /* CONFIG_PARAVIRT */
-#endif /* __ASM_PARAVIRT_H */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-21 02:58:50 +0000