search for: cond_push

Displaying 5 results from an estimated 5 matches for "cond_push".

[PATCH 05/13] x86/paravirt: Move paravirt asm macros to paravirt-asm.h
2017 Oct 04
0
[PATCH 05/13] x86/paravirt: Move paravirt asm macros to paravirt-asm.h
...avirt_types.h> + +#define _PVSITE(ptype, clobbers, ops, word, algn) \ +771:; \ + ops; \ +772:; \ + .pushsection .parainstructions,"a"; \ + .align algn; \ + word 771b; \ + .byte ptype; \ + .byte 772b-771b; \ + .short clobbers; \ + .popsection + + +#define COND_PUSH(set, mask, reg) \ + .if ((~(set)) & mask); push %reg; .endif +#define COND_POP(set, mask, reg) \ + .if ((~(set)) & mask); pop %reg; .endif + +#ifdef CONFIG_X86_64 + +#define PV_SAVE_REGS(set) \ + COND_PUSH(set, CLBR_RAX, rax); \ + COND_PUSH(set, CLBR_RCX, rcx); \ + COND_PUSH(set, CL...
[PATCH 06/13] x86/paravirt: Clean up paravirt-asm.h
2017 Oct 04
0
[PATCH 06/13] x86/paravirt: Clean up paravirt-asm.h
..., clobbers) \ +771:; \ + insns; \ +772:; \ + .pushsection .parainstructions, "a"; \ + _ASM_ALIGN; \ + _ASM_PTR 771b; \ + .byte PV_TYPE(ops, off); \ + .byte 772b-771b; \ + .short clobbers; \ .popsection @@ -33,62 +35,65 @@ COND_PUSH(set, CLBR_RDX, rdx); \ COND_PUSH(set, CLBR_RSI, rsi); \ COND_PUSH(set, CLBR_RDI, rdi); \ - COND_PUSH(set, CLBR_R8, r8); \ - COND_PUSH(set, CLBR_R9, r9); \ + COND_PUSH(set, CLBR_R8, r8); \ + COND_PUSH(set, CLBR_R9, r9); \ COND_PUSH(set, CLBR_R10, r10); \ COND_PUSH(set, CLBR_R11, r1...
[PATCH 00/13] x86/paravirt: Make pv ops code generation more closely match reality
2017 Oct 04
31
[PATCH 00/13] x86/paravirt: Make pv ops code generation more closely match reality
This changes the pv ops code generation to more closely match reality. For example, instead of: callq *0xffffffff81e3a400 (pv_irq_ops.save_fl) vmlinux will now show: pushfq pop %rax nop nop nop nop nop which is what the runtime version of the code will show in most cases. This idea was suggested by Andy Lutomirski. The benefits are: - For the most common runtime cases
[PATCH 00/13] x86/paravirt: Make pv ops code generation more closely match reality
2017 Oct 04
31
[PATCH 00/13] x86/paravirt: Make pv ops code generation more closely match reality
This changes the pv ops code generation to more closely match reality. For example, instead of: callq *0xffffffff81e3a400 (pv_irq_ops.save_fl) vmlinux will now show: pushfq pop %rax nop nop nop nop nop which is what the runtime version of the code will show in most cases. This idea was suggested by Andy Lutomirski. The benefits are: - For the most common runtime cases
[PATCH 11/13] x86/paravirt: Add paravirt alternatives infrastructure
2017 Oct 04
1
[PATCH 11/13] x86/paravirt: Add paravirt alternatives infrastructure
...TERNATIVE(.pv_altinstructions, oldinstr, newinstr, \ + X86_FEATURE_PV_OPS); \ + .pushsection .parainstructions, "a"; \ + _ASM_ALIGN; \ + _ASM_PTR 140b; \ + .byte PV_TYPE(ops, off); \ + .byte 142b-140b; \ + .short clobbers; \ + .popsection #define COND_PUSH(set, mask, reg) \ .if ((~(set)) & mask); push %reg; .endif diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h index 5656aea79412..b3a73d6d8908 100644 --- a/arch/x86/include/asm/paravirt_types.h +++ b/arch/x86/include/asm/paravirt_types.h @@ -375,6 +37...