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| author | Glauber de Oliveira Costa <gcosta@redhat.com> | 2008-01-30 13:32:06 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:32:06 +0100 |
| commit | 658be9d395630d30a501c850bde90ac791a678c9 (patch) | |
| tree | 0166e88fadd12baabd0aa1259fe266f28843e7aa | |
| parent | e5aaac443635c7c6f842f0bf8169f71f3236d574 (diff) | |
| download | kernel-common-658be9d395630d30a501c850bde90ac791a678c9.tar.gz kernel-common-658be9d395630d30a501c850bde90ac791a678c9.tar.bz2 kernel-common-658be9d395630d30a501c850bde90ac791a678c9.zip | |
x86: change assembly definition of paravirt_patch_site
To account for differences in x86_64, we change the macros that
create raw instances of the paravirt_patch_site struct.
We need to align 64-pointers to 64-bit boundaries, so we add an alignment
directive. Also, we need to make room for a word-sized pointer,
instead of a fixed 32-bit one
Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | include/asm-x86/paravirt.h | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h index 8f7984319c30..56389954d100 100644 --- a/include/asm-x86/paravirt.h +++ b/include/asm-x86/paravirt.h @@ -5,6 +5,7 @@ #ifdef CONFIG_PARAVIRT #include <asm/page.h> +#include <asm/asm.h> /* Bitmask of what can be clobbered: usually at least eax. */ #define CLBR_NONE 0x0 @@ -281,7 +282,8 @@ extern struct pv_mmu_ops pv_mmu_ops; #define _paravirt_alt(insn_string, type, clobber) \ "771:\n\t" insn_string "\n" "772:\n" \ ".pushsection .parainstructions,\"a\"\n" \ - " .long 771b\n" \ + _ASM_ALIGN "\n" \ + _ASM_PTR " 771b\n" \ " .byte " type "\n" \ " .byte 772b-771b\n" \ " .short " clobber "\n" \ @@ -1159,17 +1161,25 @@ static inline unsigned long __raw_local_irq_save(void) #define PARA_PATCH(struct, off) ((PARAVIRT_PATCH_##struct + (off)) / 4) -#define PARA_SITE(ptype, clobbers, ops) \ +#define _PVSITE(ptype, clobbers, ops, word, algn) \ 771:; \ ops; \ 772:; \ .pushsection .parainstructions,"a"; \ - .long 771b; \ + .align algn; \ + word 771b; \ .byte ptype; \ .byte 772b-771b; \ .short clobbers; \ .popsection + +#ifdef CONFIG_X86_64 +#define PARA_SITE(ptype, clobbers, ops) _PVSITE(ptype, clobbers, ops, .quad, 8) +#else +#define PARA_SITE(ptype, clobbers, ops) _PVSITE(ptype, clobbers, ops, .long, 4) +#endif + #define INTERRUPT_RETURN \ PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_iret), CLBR_NONE, \ jmp *%cs:pv_cpu_ops+PV_CPU_iret) |