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[PATCH] i386: PARAVIRT: Consistently wrap paravirt ops callsites to make them patchable 

Wrap a set of interesting paravirt_ops calls in a wrapper which makes
the callsites available for patching.  Unfortunately this is pretty
ugly because there's no way to get gcc to generate a function call,
but also wrap just the callsite itself with the necessary labels.

This patch supports functions with 0-4 arguments, and either void or
returning a value.  64-bit arguments must be split into a pair of
32-bit arguments (lower word first).  Small structures are returned in
registers.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Zachary Amsden <zach@vmware.com>
Cc: Anthony Liguori <anthony@codemonkey.ws>
This commit is contained in:
Jeremy Fitzhardinge 2007-05-02 19:27:14 +02:00 committed by Andi Kleen
parent 42c24fa22e
commit f8822f4201
1 changed files with 569 additions and 135 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

704
include/asm-i386/paravirt.h
View File

@ -124,7 +124,7 @@ struct paravirt_ops
void (*flush_tlb_user)(void);
void (*flush_tlb_kernel)(void);
void (*flush_tlb_single)(u32 addr);
void (*flush_tlb_single)(unsigned long addr);
void (*map_pt_hook)(int type, pte_t *va, u32 pfn);
@ -188,7 +188,7 @@ extern struct paravirt_ops paravirt_ops;
#define paravirt_clobber(clobber) \
[paravirt_clobber] "i" (clobber)
#define PARAVIRT_CALL "call *paravirt_ops+%c[paravirt_typenum]*4;"
#define PARAVIRT_CALL "call *(paravirt_ops+%c[paravirt_typenum]*4);"
#define _paravirt_alt(insn_string, type, clobber) \
"771:\n\t" insn_string "\n" "772:\n" \
@ -199,26 +199,234 @@ extern struct paravirt_ops paravirt_ops;
" .short " clobber "\n" \
".popsection\n"
#define paravirt_alt(insn_string) \
#define paravirt_alt(insn_string) \
_paravirt_alt(insn_string, "%c[paravirt_typenum]", "%c[paravirt_clobber]")
#define paravirt_enabled() (paravirt_ops.paravirt_enabled)
#define PVOP_CALL0(__rettype, __op) \
({ \
__rettype __ret; \
if (sizeof(__rettype) > sizeof(unsigned long)) { \
unsigned long long __tmp; \
unsigned long __ecx; \
asm volatile(paravirt_alt(PARAVIRT_CALL) \
: "=A" (__tmp), "=c" (__ecx) \
: paravirt_type(__op), \
paravirt_clobber(CLBR_ANY) \
: "memory", "cc"); \
__ret = (__rettype)__tmp; \
} else { \
unsigned long __tmp, __edx, __ecx; \
asm volatile(paravirt_alt(PARAVIRT_CALL) \
: "=a" (__tmp), "=d" (__edx), \
"=c" (__ecx) \
: paravirt_type(__op), \
paravirt_clobber(CLBR_ANY) \
: "memory", "cc"); \
__ret = (__rettype)__tmp; \
} \
__ret; \
})
#define PVOP_VCALL0(__op) \
({ \
unsigned long __eax, __edx, __ecx; \
asm volatile(paravirt_alt(PARAVIRT_CALL) \
: "=a" (__eax), "=d" (__edx), "=c" (__ecx) \
: paravirt_type(__op), \
paravirt_clobber(CLBR_ANY) \
: "memory", "cc"); \
})
#define PVOP_CALL1(__rettype, __op, arg1) \
({ \
__rettype __ret; \
if (sizeof(__rettype) > sizeof(unsigned long)) { \
unsigned long long __tmp; \
unsigned long __ecx; \
asm volatile(paravirt_alt(PARAVIRT_CALL) \
: "=A" (__tmp), "=c" (__ecx) \
: "a" ((u32)(arg1)), \
paravirt_type(__op), \
paravirt_clobber(CLBR_ANY) \
: "memory", "cc"); \
__ret = (__rettype)__tmp; \
} else { \
unsigned long __tmp, __edx, __ecx; \
asm volatile(paravirt_alt(PARAVIRT_CALL) \
: "=a" (__tmp), "=d" (__edx), \
"=c" (__ecx) \
: "0" ((u32)(arg1)), \
paravirt_type(__op), \
paravirt_clobber(CLBR_ANY) \
: "memory", "cc"); \
__ret = (__rettype)__tmp; \
} \
__ret; \
})
#define PVOP_VCALL1(__op, arg1) \
({ \
unsigned long __eax, __edx, __ecx; \
asm volatile(paravirt_alt(PARAVIRT_CALL) \
: "=a" (__eax), "=d" (__edx), "=c" (__ecx) \
: "0" ((u32)(arg1)), \
paravirt_type(__op), \
paravirt_clobber(CLBR_ANY) \
: "memory", "cc"); \
})
#define PVOP_CALL2(__rettype, __op, arg1, arg2) \
({ \
__rettype __ret; \
if (sizeof(__rettype) > sizeof(unsigned long)) { \
unsigned long long __tmp; \
unsigned long __ecx; \
asm volatile(paravirt_alt(PARAVIRT_CALL) \
: "=A" (__tmp), "=c" (__ecx) \
: "a" ((u32)(arg1)), \
"d" ((u32)(arg2)), \
paravirt_type(__op), \
paravirt_clobber(CLBR_ANY) \
: "memory", "cc"); \
__ret = (__rettype)__tmp; \
} else { \
unsigned long __tmp, __edx, __ecx; \
asm volatile(paravirt_alt(PARAVIRT_CALL) \
: "=a" (__tmp), "=d" (__edx), \
"=c" (__ecx) \
: "0" ((u32)(arg1)), \
"1" ((u32)(arg2)), \
paravirt_type(__op), \
paravirt_clobber(CLBR_ANY) \
: "memory", "cc"); \
__ret = (__rettype)__tmp; \
} \
__ret; \
})
#define PVOP_VCALL2(__op, arg1, arg2) \
({ \
unsigned long __eax, __edx, __ecx; \
asm volatile(paravirt_alt(PARAVIRT_CALL) \
: "=a" (__eax), "=d" (__edx), "=c" (__ecx) \
: "0" ((u32)(arg1)), \
"1" ((u32)(arg2)), \
paravirt_type(__op), \
paravirt_clobber(CLBR_ANY) \
: "memory", "cc"); \
})
#define PVOP_CALL3(__rettype, __op, arg1, arg2, arg3) \
({ \
__rettype __ret; \
if (sizeof(__rettype) > sizeof(unsigned long)) { \
unsigned long long __tmp; \
unsigned long __ecx; \
asm volatile(paravirt_alt(PARAVIRT_CALL) \
: "=A" (__tmp), "=c" (__ecx) \
: "a" ((u32)(arg1)), \
"d" ((u32)(arg2)), \
"1" ((u32)(arg3)), \
paravirt_type(__op), \
paravirt_clobber(CLBR_ANY) \
: "memory", "cc"); \
__ret = (__rettype)__tmp; \
} else { \
unsigned long __tmp, __edx, __ecx; \
asm volatile(paravirt_alt(PARAVIRT_CALL) \
: "=a" (__tmp), "=d" (__edx), \
"=c" (__ecx) \
: "0" ((u32)(arg1)), \
"1" ((u32)(arg2)), \
"2" ((u32)(arg3)), \
paravirt_type(__op), \
paravirt_clobber(CLBR_ANY) \
: "memory", "cc"); \
__ret = (__rettype)__tmp; \
} \
__ret; \
})
#define PVOP_VCALL3(__op, arg1, arg2, arg3) \
({ \
unsigned long __eax, __edx, __ecx; \
asm volatile(paravirt_alt(PARAVIRT_CALL) \
: "=a" (__eax), "=d" (__edx), "=c" (__ecx) \
: "0" ((u32)(arg1)), \
"1" ((u32)(arg2)), \
"2" ((u32)(arg3)), \
paravirt_type(__op), \
paravirt_clobber(CLBR_ANY) \
: "memory", "cc"); \
})
#define PVOP_CALL4(__rettype, __op, arg1, arg2, arg3, arg4) \
({ \
__rettype __ret; \
if (sizeof(__rettype) > sizeof(unsigned long)) { \
unsigned long long __tmp; \
unsigned long __ecx; \
asm volatile("push %[_arg4]; " \
paravirt_alt(PARAVIRT_CALL) \
"lea 4(%%esp),%%esp" \
: "=A" (__tmp), "=c" (__ecx) \
: "a" ((u32)(arg1)), \
"d" ((u32)(arg2)), \
"1" ((u32)(arg3)), \
[_arg4] "mr" ((u32)(arg4)), \
paravirt_type(__op), \
paravirt_clobber(CLBR_ANY) \
: "memory", "cc",); \
__ret = (__rettype)__tmp; \
} else { \
unsigned long __tmp, __edx, __ecx; \
asm volatile("push %[_arg4]; " \
paravirt_alt(PARAVIRT_CALL) \
"lea 4(%%esp),%%esp" \
: "=a" (__tmp), "=d" (__edx), "=c" (__ecx) \
: "0" ((u32)(arg1)), \
"1" ((u32)(arg2)), \
"2" ((u32)(arg3)), \
[_arg4]"mr" ((u32)(arg4)), \
paravirt_type(__op), \
paravirt_clobber(CLBR_ANY) \
: "memory", "cc"); \
__ret = (__rettype)__tmp; \
} \
__ret; \
})
#define PVOP_VCALL4(__op, arg1, arg2, arg3, arg4) \
({ \
unsigned long __eax, __edx, __ecx; \
asm volatile("push %[_arg4]; " \
paravirt_alt(PARAVIRT_CALL) \
"lea 4(%%esp),%%esp" \
: "=a" (__eax), "=d" (__edx), "=c" (__ecx) \
: "0" ((u32)(arg1)), \
"1" ((u32)(arg2)), \
"2" ((u32)(arg3)), \
[_arg4]"mr" ((u32)(arg4)), \
paravirt_type(__op), \
paravirt_clobber(CLBR_ANY) \
: "memory", "cc"); \
})
static inline int paravirt_enabled(void)
{
return paravirt_ops.paravirt_enabled;
}
static inline void load_esp0(struct tss_struct *tss,
struct thread_struct *thread)
{
paravirt_ops.load_esp0(tss, thread);
PVOP_VCALL2(load_esp0, tss, thread);
}
#define ARCH_SETUP paravirt_ops.arch_setup();
static inline unsigned long get_wallclock(void)
{
return paravirt_ops.get_wallclock();
return PVOP_CALL0(unsigned long, get_wallclock);
}
static inline int set_wallclock(unsigned long nowtime)
{
return paravirt_ops.set_wallclock(nowtime);
return PVOP_CALL1(int, set_wallclock, nowtime);
}
static inline void (*choose_time_init(void))(void)
@ -230,127 +438,208 @@ static inline void (*choose_time_init(void))(void)
static inline void __cpuid(unsigned int *eax, unsigned int *ebx,
unsigned int *ecx, unsigned int *edx)
{
paravirt_ops.cpuid(eax, ebx, ecx, edx);
PVOP_VCALL4(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)
static inline unsigned long paravirt_get_debugreg(int reg)
{
return PVOP_CALL1(unsigned long, 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(set_debugreg, reg, val);
}
#define clts() paravirt_ops.clts()
static inline void clts(void)
{
PVOP_VCALL0(clts);
}
#define read_cr0() paravirt_ops.read_cr0()
#define write_cr0(x) paravirt_ops.write_cr0(x)
static inline unsigned long read_cr0(void)
{
return PVOP_CALL0(unsigned long, read_cr0);
}
#define read_cr2() paravirt_ops.read_cr2()
#define write_cr2(x) paravirt_ops.write_cr2(x)
static inline void write_cr0(unsigned long x)
{
PVOP_VCALL1(write_cr0, x);
}
#define read_cr3() paravirt_ops.read_cr3()
#define write_cr3(x) paravirt_ops.write_cr3(x)
static inline unsigned long read_cr2(void)
{
return PVOP_CALL0(unsigned long, read_cr2);
}
#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 write_cr2(unsigned long x)
{
PVOP_VCALL1(write_cr2, x);
}
#define raw_ptep_get_and_clear(xp) (paravirt_ops.ptep_get_and_clear(xp))
static inline unsigned long read_cr3(void)
{
return PVOP_CALL0(unsigned long, read_cr3);
}
static inline void write_cr3(unsigned long x)
{
PVOP_VCALL1(write_cr3, x);
}
static inline unsigned long read_cr4(void)
{
return PVOP_CALL0(unsigned long, read_cr4);
}
static inline unsigned long read_cr4_safe(void)
{
return PVOP_CALL0(unsigned long, read_cr4_safe);
}
static inline void write_cr4(unsigned long x)
{
PVOP_VCALL1(write_cr4, x);
}
static inline void raw_safe_halt(void)
{
paravirt_ops.safe_halt();
PVOP_VCALL0(safe_halt);
}
static inline void halt(void)
{
paravirt_ops.safe_halt();
PVOP_VCALL0(safe_halt);
}
static inline void wbinvd(void)
{
PVOP_VCALL0(wbinvd);
}
#define wbinvd() paravirt_ops.wbinvd()
#define get_kernel_rpl() (paravirt_ops.kernel_rpl)
static inline u64 paravirt_read_msr(unsigned msr, int *err)
{
return PVOP_CALL2(u64, read_msr, msr, err);
}
static inline int paravirt_write_msr(unsigned msr, unsigned low, unsigned high)
{
return PVOP_CALL3(int, 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_ops.read_msr(msr,&_err); \
val1 = (u32)_l; \
val2 = _l >> 32; \
#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 { \
u64 _l = ((u64)(val2) << 32) | (val1); \
paravirt_ops.write_msr((msr), _l); \
#define wrmsr(msr,val1,val2) do { \
paravirt_write_msr(msr, val1, val2); \
} while(0)
#define rdmsrl(msr,val) do { \
int _err; \
val = paravirt_ops.read_msr((msr),&_err); \
#define rdmsrl(msr,val) do { \
int _err; \
val = paravirt_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); \
})
#define wrmsrl(msr,val) ((void)paravirt_write_msr(msr, val, 0))
#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_ops.read_msr(msr,&_err); \
(*a) = (u32)_l; \
(*b) = _l >> 32; \
#define rdmsr_safe(msr,a,b) ({ \
int _err; \
u64 _l = paravirt_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; \
static inline u64 paravirt_read_tsc(void)
{
return PVOP_CALL0(u64, read_tsc);
}
#define rdtsc(low,high) do { \
u64 _l = paravirt_read_tsc(); \
low = (u32)_l; \
high = _l >> 32; \
} while(0)
#define rdtscl(low) do { \
u64 _l = paravirt_ops.read_tsc(); \
low = (int)_l; \
#define rdtscl(low) do { \
u64 _l = paravirt_read_tsc(); \
low = (int)_l; \
} while(0)
#define rdtscll(val) (val = paravirt_ops.read_tsc())
#define rdtscll(val) (val = paravirt_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 { \
u64 _l = paravirt_ops.read_pmc(); \
low = (u32)_l; \
high = _l >> 32; \
static inline unsigned long long paravirt_read_pmc(int counter)
{
return PVOP_CALL1(u64, read_pmc, counter);
}
#define rdpmc(counter,low,high) do { \
u64 _l = paravirt_read_pmc(counter); \
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))
#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
static inline void load_TR_desc(void)
{
PVOP_VCALL0(load_tr_desc);
}
static inline void load_gdt(const struct Xgt_desc_struct *dtr)
{
PVOP_VCALL1(load_gdt, dtr);
}
static inline void load_idt(const struct Xgt_desc_struct *dtr)
{
PVOP_VCALL1(load_idt, dtr);
}
static inline void set_ldt(const void *addr, unsigned entries)
{
PVOP_VCALL2(set_ldt, addr, entries);
}
static inline void store_gdt(struct Xgt_desc_struct *dtr)
{
PVOP_VCALL1(store_gdt, dtr);
}
static inline void store_idt(struct Xgt_desc_struct *dtr)
{
PVOP_VCALL1(store_idt, dtr);
}
static inline unsigned long paravirt_store_tr(void)
{
return PVOP_CALL0(unsigned long, store_tr);
}
#define store_tr(tr) ((tr) = paravirt_store_tr())
static inline void load_TLS(struct thread_struct *t, unsigned cpu)
{
PVOP_VCALL2(load_tls, t, cpu);
}
static inline void write_ldt_entry(void *dt, int entry, u32 low, u32 high)
{
PVOP_VCALL4(write_ldt_entry, dt, entry, low, high);
}
static inline void write_gdt_entry(void *dt, int entry, u32 low, u32 high)
{
PVOP_VCALL4(write_gdt_entry, dt, entry, low, high);
}
static inline void write_idt_entry(void *dt, int entry, u32 low, u32 high)
{
PVOP_VCALL4(write_idt_entry, dt, entry, low, high);
}
static inline void set_iopl_mask(unsigned mask)
{
PVOP_VCALL1(set_iopl_mask, mask);
}
/* The paravirtualized I/O functions */
static inline void slow_down_io(void) {
@ -368,27 +657,27 @@ static inline void slow_down_io(void) {
*/
static inline void apic_write(unsigned long reg, unsigned long v)
{
paravirt_ops.apic_write(reg,v);
PVOP_VCALL2(apic_write, reg, v);
}
static inline void apic_write_atomic(unsigned long reg, unsigned long v)
{
paravirt_ops.apic_write_atomic(reg,v);
PVOP_VCALL2(apic_write_atomic, reg, v);
}
static inline unsigned long apic_read(unsigned long reg)
{
return paravirt_ops.apic_read(reg);
return PVOP_CALL1(unsigned long, apic_read, reg);
}
static inline void setup_boot_clock(void)
{
paravirt_ops.setup_boot_clock();
PVOP_VCALL0(setup_boot_clock);
}
static inline void setup_secondary_clock(void)
{
paravirt_ops.setup_secondary_clock();
PVOP_VCALL0(setup_secondary_clock);
}
#endif
@ -408,93 +697,205 @@ static inline void paravirt_pagetable_setup_done(pgd_t *base)
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);
PVOP_VCALL3(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);
PVOP_VCALL2(activate_mm, prev, next);
}
static inline void arch_dup_mmap(struct mm_struct *oldmm,
struct mm_struct *mm)
{
paravirt_ops.dup_mmap(oldmm, mm);
PVOP_VCALL2(dup_mmap, oldmm, mm);
}
static inline void arch_exit_mmap(struct mm_struct *mm)
{
paravirt_ops.exit_mmap(mm);
PVOP_VCALL1(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)
static inline void __flush_tlb(void)
{
PVOP_VCALL0(flush_tlb_user);
}
static inline void __flush_tlb_global(void)
{
PVOP_VCALL0(flush_tlb_kernel);
}
static inline void __flush_tlb_single(unsigned long addr)
{
PVOP_VCALL1(flush_tlb_single, addr);
}
#define paravirt_map_pt_hook(type, va, pfn) paravirt_ops.map_pt_hook(type, va, pfn)
static inline void paravirt_map_pt_hook(int type, pte_t *va, u32 pfn)
{
PVOP_VCALL3(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)
static inline void paravirt_alloc_pt(unsigned pfn)
{
PVOP_VCALL1(alloc_pt, pfn);
}
static inline void paravirt_release_pt(unsigned pfn)
{
PVOP_VCALL1(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 paravirt_alloc_pd(unsigned pfn)
{
PVOP_VCALL1(alloc_pd, pfn);
}
static inline void paravirt_alloc_pd_clone(unsigned pfn, unsigned clonepfn,
unsigned start, unsigned count)
{
PVOP_VCALL4(alloc_pd_clone, pfn, clonepfn, start, count);
}
static inline void paravirt_release_pd(unsigned pfn)
{
PVOP_VCALL1(release_pd, pfn);
}
static inline void pte_update(struct mm_struct *mm, unsigned long addr,
pte_t *ptep)
{
PVOP_VCALL3(pte_update, mm, addr, ptep);
}
static inline void pte_update_defer(struct mm_struct *mm, unsigned long addr,
pte_t *ptep)
{
PVOP_VCALL3(pte_update_defer, mm, addr, ptep);
}
#ifdef CONFIG_X86_PAE
static inline pte_t __pte(unsigned long long val)
{
unsigned long long ret = PVOP_CALL2(unsigned long long, make_pte,
val, val >> 32);
return (pte_t) { ret, ret >> 32 };
}
static inline pmd_t __pmd(unsigned long long val)
{
return (pmd_t) { PVOP_CALL2(unsigned long long, make_pmd, val, val >> 32) };
}
static inline pgd_t __pgd(unsigned long long val)
{
return (pgd_t) { PVOP_CALL2(unsigned long long, make_pgd, val, val >> 32) };
}
static inline unsigned long long pte_val(pte_t x)
{
return PVOP_CALL2(unsigned long long, pte_val, x.pte_low, x.pte_high);
}
static inline unsigned long long pmd_val(pmd_t x)
{
return PVOP_CALL2(unsigned long long, pmd_val, x.pmd, x.pmd >> 32);
}
static inline unsigned long long pgd_val(pgd_t x)
{
return PVOP_CALL2(unsigned long long, pgd_val, x.pgd, x.pgd >> 32);
}
static inline void set_pte(pte_t *ptep, pte_t pteval)
{
paravirt_ops.set_pte(ptep, pteval);
PVOP_VCALL3(set_pte, ptep, pteval.pte_low, pteval.pte_high);
}
static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pteval)
{
/* 5 arg words */
paravirt_ops.set_pte_at(mm, addr, ptep, pteval);
}
static inline void set_pte_atomic(pte_t *ptep, pte_t pteval)
{
PVOP_VCALL3(set_pte_atomic, ptep, pteval.pte_low, pteval.pte_high);
}
static inline void set_pte_present(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte)
{
/* 5 arg words */
paravirt_ops.set_pte_present(mm, addr, ptep, pte);
}
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);
PVOP_VCALL3(set_pmd, pmdp, pmdval.pmd, pmdval.pmd >> 32);
}
static inline void set_pud(pud_t *pudp, pud_t pudval)
{
paravirt_ops.set_pud(pudp, pudval);
PVOP_VCALL3(set_pud, pudp, pudval.pgd.pgd, pudval.pgd.pgd >> 32);
}
static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
{
paravirt_ops.pte_clear(mm, addr, ptep);
PVOP_VCALL3(pte_clear, mm, addr, ptep);
}
static inline void pmd_clear(pmd_t *pmdp)
{
paravirt_ops.pmd_clear(pmdp);
PVOP_VCALL1(pmd_clear, pmdp);
}
#endif
static inline pte_t raw_ptep_get_and_clear(pte_t *p)
{
unsigned long long val = PVOP_CALL1(unsigned long long, ptep_get_and_clear, p);
return (pte_t) { val, val >> 32 };
}
#else /* !CONFIG_X86_PAE */
static inline pte_t __pte(unsigned long val)
{
return (pte_t) { PVOP_CALL1(unsigned long, make_pte, val) };
}
static inline pgd_t __pgd(unsigned long val)
{
return (pgd_t) { PVOP_CALL1(unsigned long, make_pgd, val) };
}
static inline unsigned long pte_val(pte_t x)
{
return PVOP_CALL1(unsigned long, pte_val, x.pte_low);
}
static inline unsigned long pgd_val(pgd_t x)
{
return PVOP_CALL1(unsigned long, pgd_val, x.pgd);
}
static inline void set_pte(pte_t *ptep, pte_t pteval)
{
PVOP_VCALL2(set_pte, ptep, pteval.pte_low);
}
static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pteval)
{
PVOP_VCALL4(set_pte_at, mm, addr, ptep, pteval.pte_low);
}
static inline void set_pmd(pmd_t *pmdp, pmd_t pmdval)
{
PVOP_VCALL2(set_pmd, pmdp, pmdval.pud.pgd.pgd);
}
static inline pte_t raw_ptep_get_and_clear(pte_t *p)
{
return (pte_t) { PVOP_CALL1(unsigned long, ptep_get_and_clear, p) };
}
#endif /* CONFIG_X86_PAE */
/* Lazy mode for batching updates / context switch */
#define PARAVIRT_LAZY_NONE 0
@ -503,14 +904,37 @@ static inline void pmd_clear(pmd_t *pmdp)
#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)
static inline void arch_enter_lazy_cpu_mode(void)
{
PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_CPU);
}
static inline void arch_leave_lazy_cpu_mode(void)
{
PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_NONE);
}
static inline void arch_flush_lazy_cpu_mode(void)
{
PVOP_VCALL1(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)
static inline void arch_enter_lazy_mmu_mode(void)
{
PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_MMU);
}
static inline void arch_leave_lazy_mmu_mode(void)
{
PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_NONE);
}
static inline void arch_flush_lazy_mmu_mode(void)
{
PVOP_VCALL1(set_lazy_mode, PARAVIRT_LAZY_FLUSH);
}
void _paravirt_nop(void);
#define paravirt_nop ((void *)_paravirt_nop)
@ -603,6 +1027,16 @@ static inline unsigned long __raw_local_irq_save(void)
paravirt_clobber(CLBR_EAX)
#undef PARAVIRT_CALL
#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__ */