Messages in this thread Patch in this message | | | From | Borislav Petkov <> | Subject | [PATCH 2/3] x86/ptrace: Always inline v8086_mode() for instrumentation | Date | Fri, 4 Feb 2022 09:30:14 +0100 |
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From: Borislav Petkov <bp@suse.de>
Instrumentation glue like KASAN causes the following warning:
vmlinux.o: warning: objtool: mce_gather_info()+0x5f: call to v8086_mode.constprop.0() leaves .noinstr.text section
due to gcc creating a function call for that oneliner. Force-inline it and even save some vmlinux bytes (.config is close to an allmodconfig):
text data bss dec hex filename 209431677 208257651 34411048 452100376 1af28118 vmlinux.before 209431519 208257615 34411048 452100182 1af28056 vmlinux.after
Signed-off-by: Borislav Petkov <bp@suse.de> --- arch/x86/include/asm/ptrace.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/ptrace.h b/arch/x86/include/asm/ptrace.h index 703663175a5a..4357e0f2cd5f 100644 --- a/arch/x86/include/asm/ptrace.h +++ b/arch/x86/include/asm/ptrace.h @@ -137,7 +137,7 @@ static __always_inline int user_mode(struct pt_regs *regs) #endif } -static inline int v8086_mode(struct pt_regs *regs) +static __always_inline int v8086_mode(struct pt_regs *regs) { #ifdef CONFIG_X86_32 return (regs->flags & X86_VM_MASK); -- 2.29.2
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