#define __ASM_PARAVIRT_H
/* Various instructions on x86 need to be replaced for
* para-virtualization: those hooks are defined here. */
-#include <linux/linkage.h>
+
+#ifdef CONFIG_PARAVIRT
#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 CLBR_ANY 0x7
#ifndef __ASSEMBLY__
+#include <linux/types.h>
+
struct thread_struct;
struct Xgt_desc_struct;
struct tss_struct;
struct mm_struct;
+struct desc_struct;
struct paravirt_ops
{
unsigned int kernel_rpl;
+ int shared_kernel_pmd;
int paravirt_enabled;
const char *name;
char *(*memory_setup)(void);
void (*init_IRQ)(void);
+ void (*pagetable_setup_start)(pgd_t *pgd_base);
+ void (*pagetable_setup_done)(pgd_t *pgd_base);
+
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,
+ void (*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);
+ unsigned long (*get_debugreg)(int regno);
+ void (*set_debugreg)(int regno, unsigned long value);
- void (fastcall *clts)(void);
+ void (*clts)(void);
- unsigned long (fastcall *read_cr0)(void);
- void (fastcall *write_cr0)(unsigned long);
+ unsigned long (*read_cr0)(void);
+ void (*write_cr0)(unsigned long);
- unsigned long (fastcall *read_cr2)(void);
- void (fastcall *write_cr2)(unsigned long);
+ unsigned long (*read_cr2)(void);
+ void (*write_cr2)(unsigned long);
- unsigned long (fastcall *read_cr3)(void);
- void (fastcall *write_cr3)(unsigned long);
+ unsigned long (*read_cr3)(void);
+ void (*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 (*read_cr4_safe)(void);
+ unsigned long (*read_cr4)(void);
+ void (*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);
+ 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);
+ void (*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);
+ u64 (*read_msr)(unsigned int msr, int *err);
+ int (*write_msr)(unsigned int msr, u64 val);
+
+ u64 (*read_tsc)(void);
+ u64 (*read_pmc)(void);
+ u64 (*get_scheduled_cycles)(void);
+ unsigned long (*get_cpu_khz)(void);
+
+ void (*load_tr_desc)(void);
+ void (*load_gdt)(const struct Xgt_desc_struct *);
+ void (*load_idt)(const struct Xgt_desc_struct *);
+ void (*store_gdt)(struct Xgt_desc_struct *);
+ void (*store_idt)(struct Xgt_desc_struct *);
+ void (*set_ldt)(const void *desc, unsigned entries);
+ unsigned long (*store_tr)(void);
+ void (*load_tls)(struct thread_struct *t, unsigned int cpu);
+ void (*write_ldt_entry)(struct desc_struct *,
+ int entrynum, u32 low, u32 high);
+ void (*write_gdt_entry)(struct desc_struct *,
+ int entrynum, u32 low, u32 high);
+ void (*write_idt_entry)(struct desc_struct *,
+ int entrynum, u32 low, u32 high);
+ void (*load_esp0)(struct tss_struct *tss, struct thread_struct *t);
+
+ void (*set_iopl_mask)(unsigned mask);
+
+ void (*io_delay)(void);
+
+ 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);
#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);
+ void (*apic_write)(unsigned long reg, unsigned long v);
+ void (*apic_write_atomic)(unsigned long reg, unsigned long v);
+ unsigned long (*apic_read)(unsigned long reg);
+ void (*setup_boot_clock)(void);
+ void (*setup_secondary_clock)(void);
#endif
- void (fastcall *flush_tlb_user)(void);
- void (fastcall *flush_tlb_kernel)(void);
- void (fastcall *flush_tlb_single)(u32 addr);
+ void (*flush_tlb_user)(void);
+ void (*flush_tlb_kernel)(void);
+ void (*flush_tlb_single)(u32 addr);
+
+ void (*map_pt_hook)(int type, pte_t *va, u32 pfn);
+
+ void (*alloc_pt)(u32 pfn);
+ void (*alloc_pd)(u32 pfn);
+ void (*alloc_pd_clone)(u32 pfn, u32 clonepfn, u32 start, u32 count);
+ void (*release_pt)(u32 pfn);
+ void (*release_pd)(u32 pfn);
+
+ 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_get_and_clear)(pte_t *ptep);
- 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);
+ 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 (*set_pud)(pud_t *pudp, pud_t pudval);
+ void (*pte_clear)(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
+ void (*pmd_clear)(pmd_t *pmdp);
+
+ unsigned long long (*pte_val)(pte_t);
+ unsigned long long (*pmd_val)(pmd_t);
+ unsigned long long (*pgd_val)(pgd_t);
+
+ pte_t (*make_pte)(unsigned long long pte);
+ pmd_t (*make_pmd)(unsigned long long pmd);
+ pgd_t (*make_pgd)(unsigned long long pgd);
+#else
+ unsigned long (*pte_val)(pte_t);
+ unsigned long (*pgd_val)(pgd_t);
+
+ pte_t (*make_pte)(unsigned long pte);
+ pgd_t (*make_pgd)(unsigned long pgd);
#endif
+ void (*set_lazy_mode)(int mode);
+
/* These two are jmp to, not actually called. */
- void (fastcall *irq_enable_sysexit)(void);
- void (fastcall *iret)(void);
+ void (*irq_enable_sysexit)(void);
+ void (*iret)(void);
+
+ void (*startup_ipi_hook)(int phys_apicid, unsigned long start_eip, unsigned long start_esp);
};
/* Mark a paravirt probe function. */
return paravirt_ops.set_wallclock(nowtime);
}
-static inline void do_time_init(void)
+static inline void (*choose_time_init(void))(void)
{
- return paravirt_ops.time_init();
+ return paravirt_ops.time_init;
}
/* The paravirtualized CPUID instruction. */
#define read_cr4_safe(x) paravirt_ops.read_cr4_safe()
#define write_cr4(x) paravirt_ops.write_cr4(x)
+#define raw_ptep_get_and_clear(xp) (paravirt_ops.ptep_get_and_clear(xp))
+
static inline void raw_safe_halt(void)
{
paravirt_ops.safe_halt();
#define get_kernel_rpl() (paravirt_ops.kernel_rpl)
+/* These should all do BUG_ON(_err), but our headers are too tangled. */
#define rdmsr(msr,val1,val2) do { \
int _err; \
u64 _l = paravirt_ops.read_msr(msr,&_err); \
#define rdtscll(val) (val = paravirt_ops.read_tsc())
+#define get_scheduled_cycles(val) (val = paravirt_ops.get_scheduled_cycles())
+#define calculate_cpu_khz() (paravirt_ops.get_cpu_khz())
+
#define write_tsc(val1,val2) wrmsr(0x10, val1, val2)
#define rdpmc(counter,low,high) do { \
(paravirt_ops.write_idt_entry((dt), (entry), (low), (high)))
#define set_iopl_mask(mask) (paravirt_ops.set_iopl_mask(mask))
+#define __pte(x) paravirt_ops.make_pte(x)
+#define __pgd(x) paravirt_ops.make_pgd(x)
+
+#define pte_val(x) paravirt_ops.pte_val(x)
+#define pgd_val(x) paravirt_ops.pgd_val(x)
+
+#ifdef CONFIG_X86_PAE
+#define __pmd(x) paravirt_ops.make_pmd(x)
+#define pmd_val(x) paravirt_ops.pmd_val(x)
+#endif
+
/* The paravirtualized I/O functions */
static inline void slow_down_io(void) {
paravirt_ops.io_delay();
{
return paravirt_ops.apic_read(reg);
}
+
+static inline void setup_boot_clock(void)
+{
+ paravirt_ops.setup_boot_clock();
+}
+
+static inline void setup_secondary_clock(void)
+{
+ paravirt_ops.setup_secondary_clock();
+}
#endif
+static inline void paravirt_pagetable_setup_start(pgd_t *base)
+{
+ if (paravirt_ops.pagetable_setup_start)
+ (*paravirt_ops.pagetable_setup_start)(base);
+}
+
+static inline void paravirt_pagetable_setup_done(pgd_t *base)
+{
+ if (paravirt_ops.pagetable_setup_done)
+ (*paravirt_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)
+{
+ return paravirt_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)
+{
+ paravirt_ops.activate_mm(prev, next);
+}
+
+static inline void arch_dup_mmap(struct mm_struct *oldmm,
+ struct mm_struct *mm)
+{
+ paravirt_ops.dup_mmap(oldmm, mm);
+}
+
+static inline void arch_exit_mmap(struct mm_struct *mm)
+{
+ paravirt_ops.exit_mmap(mm);
+}
#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)
+#define paravirt_map_pt_hook(type, va, pfn) paravirt_ops.map_pt_hook(type, va, pfn)
+
+#define paravirt_alloc_pt(pfn) paravirt_ops.alloc_pt(pfn)
+#define paravirt_release_pt(pfn) paravirt_ops.release_pt(pfn)
+
+#define paravirt_alloc_pd(pfn) paravirt_ops.alloc_pd(pfn)
+#define paravirt_alloc_pd_clone(pfn, clonepfn, start, count) \
+ paravirt_ops.alloc_pd_clone(pfn, clonepfn, start, count)
+#define paravirt_release_pd(pfn) paravirt_ops.release_pd(pfn)
+
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)
+static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, pte_t pteval)
{
paravirt_ops.set_pte_at(mm, addr, ptep, pteval);
}
}
#endif
+/* Lazy mode for batching updates / context switch */
+#define PARAVIRT_LAZY_NONE 0
+#define PARAVIRT_LAZY_MMU 1
+#define PARAVIRT_LAZY_CPU 2
+#define PARAVIRT_LAZY_FLUSH 3
+
+#define __HAVE_ARCH_ENTER_LAZY_CPU_MODE
+#define arch_enter_lazy_cpu_mode() paravirt_ops.set_lazy_mode(PARAVIRT_LAZY_CPU)
+#define arch_leave_lazy_cpu_mode() paravirt_ops.set_lazy_mode(PARAVIRT_LAZY_NONE)
+#define arch_flush_lazy_cpu_mode() paravirt_ops.set_lazy_mode(PARAVIRT_LAZY_FLUSH)
+
+#define __HAVE_ARCH_ENTER_LAZY_MMU_MODE
+#define arch_enter_lazy_mmu_mode() paravirt_ops.set_lazy_mode(PARAVIRT_LAZY_MMU)
+#define arch_leave_lazy_mmu_mode() paravirt_ops.set_lazy_mode(PARAVIRT_LAZY_NONE)
+#define arch_flush_lazy_mmu_mode() paravirt_ops.set_lazy_mode(PARAVIRT_LAZY_FLUSH)
+
+void _paravirt_nop(void);
+#define paravirt_nop ((void *)_paravirt_nop)
+
/* These all sit in the .parainstructions section to tell us what to patch. */
-struct paravirt_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[];
+
#define paravirt_alt(insn_string, typenum, clobber) \
"771:\n\t" insn_string "\n" "772:\n" \
".pushsection .parainstructions,\"a\"\n" \
projects / linux-2.6-omap-h63xx.git / blobdiff