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| author |  Ingo Molnar <mingo@kernel.org>
| 2024-02-27 10:09:49 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org>
| 2024-02-27 10:09:49 +0100 |
| commit | 9b9c280b9af2aa851d83e7d0b79f36a3d869d745 (patch) | |
| tree | b61cf8566669d9615234e87696a833ee487e2655 /arch/arm64/include/asm/jump_label.h | |
| parent | x86/apic: Build the x86 topology enumeration functions on UP APIC builds too (diff) | |
| parent | x86/bugs: Use fixed addressing for VERW operand (diff) | |
| download | linux-9b9c280b9af2aa851d83e7d0b79f36a3d869d745.tar.gz linux-9b9c280b9af2aa851d83e7d0b79f36a3d869d745.tar.bz2 linux-9b9c280b9af2aa851d83e7d0b79f36a3d869d745.zip | |
Merge branch 'x86/urgent' into x86/apic, to resolve conflicts
Conflicts:
arch/x86/kernel/cpu/common.c
arch/x86/kernel/cpu/intel.c
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm64/include/asm/jump_label.h')
| -rw-r--r-- | arch/arm64/include/asm/jump_label.h | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/arm64/include/asm/jump_label.h b/arch/arm64/include/asm/jump_label.h index 6aafbb789991..b360c4c2b5e7 100644 --- a/arch/arm64/include/asm/jump_label.h +++ b/arch/arm64/include/asm/jump_label.h @@ -15,6 +15,10 @@ #define JUMP_LABEL_NOP_SIZE AARCH64_INSN_SIZE +/* + * Prefer the constraint "S" to support PIC with GCC. Clang before 19 does not + * support "S" on a symbol with a constant offset, so we use "i" as a fallback. + */ static __always_inline bool arch_static_branch(struct static_key * const key, const bool branch) { @@ -23,9 +27,9 @@ static __always_inline bool arch_static_branch(struct static_key * const key, " .pushsection __jump_table, \"aw\" \n\t" " .align 3 \n\t" " .long 1b - ., %l[l_yes] - . \n\t" - " .quad %c0 - . \n\t" + " .quad (%[key] - .) + %[bit0] \n\t" " .popsection \n\t" - : : "i"(&((char *)key)[branch]) : : l_yes); + : : [key]"Si"(key), [bit0]"i"(branch) : : l_yes); return false; l_yes: @@ -40,9 +44,9 @@ static __always_inline bool arch_static_branch_jump(struct static_key * const ke " .pushsection __jump_table, \"aw\" \n\t" " .align 3 \n\t" " .long 1b - ., %l[l_yes] - . \n\t" - " .quad %c0 - . \n\t" + " .quad (%[key] - .) + %[bit0] \n\t" " .popsection \n\t" - : : "i"(&((char *)key)[branch]) : : l_yes); + : : [key]"Si"(key), [bit0]"i"(branch) : : l_yes); return false; l_yes: |