search for: lstatic_branch_nop_

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

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[PATCH v3 00/12] x86, kbuild: revert macrofying inline assembly code
2018 Dec 19
0
[PATCH v3 00/12] x86, kbuild: revert macrofying inline assembly code
...mp_label.h included on a non-jump-label kernel +#endif + #define JUMP_LABEL_NOP_SIZE 5 #ifdef CONFIG_X86_64 @@ -53,26 +66,37 @@ static __always_inline bool arch_static_branch_jump(struct static_key *key, bool #else /* __ASSEMBLY__ */ -.macro STATIC_BRANCH_NOP l_yes:req key:req branch:req -.Lstatic_branch_nop_\@: - .byte STATIC_KEY_INIT_NOP -.Lstatic_branch_no_after_\@: +.macro STATIC_JUMP_IF_TRUE target, key, def +.Lstatic_jump_\@: + .if \def + /* Equivalent to "jmp.d32 \target" */ + .byte 0xe9 + .long \target - .Lstatic_jump_after_\@ +.Lstatic_jump_after_\@: + .else + .byte STATIC_KEY_INIT...
[PATCH v3 00/12] x86, kbuild: revert macrofying inline assembly code
2018 Dec 17
3
[PATCH v3 00/12] x86, kbuild: revert macrofying inline assembly code
This series reverts the in-kernel workarounds for inlining issues. The commit description of 77b0bf55bc67 mentioned "We also hope that GCC will eventually get fixed,..." Now, GCC provides a solution. https://gcc.gnu.org/onlinedocs/gcc/Extended-Asm.html explains the new "asm inline" syntax. The performance issue will be eventually solved. [About Code cleanups] I know Nadam
[PATCH v3 00/12] x86, kbuild: revert macrofying inline assembly code
2018 Dec 17
3
[PATCH v3 00/12] x86, kbuild: revert macrofying inline assembly code
This series reverts the in-kernel workarounds for inlining issues. The commit description of 77b0bf55bc67 mentioned "We also hope that GCC will eventually get fixed,..." Now, GCC provides a solution. https://gcc.gnu.org/onlinedocs/gcc/Extended-Asm.html explains the new "asm inline" syntax. The performance issue will be eventually solved. [About Code cleanups] I know Nadam
[PATCH] kbuild, x86: revert macros in extended asm workarounds
2018 Dec 13
2
[PATCH] kbuild, x86: revert macros in extended asm workarounds
...".popsection \n\t" : : "i" (key), "i" (branch) : : l_yes); return false; @@ -41,26 +66,37 @@ static __always_inline bool arch_static_branch_jump(struct static_key *key, bool #else /* __ASSEMBLY__ */ -.macro STATIC_BRANCH_NOP l_yes:req key:req branch:req -.Lstatic_branch_nop_\@: - .byte STATIC_KEY_INIT_NOP -.Lstatic_branch_no_after_\@: +.macro STATIC_JUMP_IF_TRUE target, key, def +.Lstatic_jump_\@: + .if \def + /* Equivalent to "jmp.d32 \target" */ + .byte 0xe9 + .long \target - .Lstatic_jump_after_\@ +.Lstatic_jump_after_\@: + .else + .byte STATIC_KEY_INIT...
[PATCH] kbuild, x86: revert macros in extended asm workarounds
2018 Dec 13
2
[PATCH] kbuild, x86: revert macros in extended asm workarounds
...".popsection \n\t" : : "i" (key), "i" (branch) : : l_yes); return false; @@ -41,26 +66,37 @@ static __always_inline bool arch_static_branch_jump(struct static_key *key, bool #else /* __ASSEMBLY__ */ -.macro STATIC_BRANCH_NOP l_yes:req key:req branch:req -.Lstatic_branch_nop_\@: - .byte STATIC_KEY_INIT_NOP -.Lstatic_branch_no_after_\@: +.macro STATIC_JUMP_IF_TRUE target, key, def +.Lstatic_jump_\@: + .if \def + /* Equivalent to "jmp.d32 \target" */ + .byte 0xe9 + .long \target - .Lstatic_jump_after_\@ +.Lstatic_jump_after_\@: + .else + .byte STATIC_KEY_INIT...