From: Chuck Ebbert <76306.1226@compuserve.com> Date: Tue, 26 Sep 2006 08:52:32 +0000 (+0200) Subject: [PATCH] remove lock prefix from is_at_popf() tests X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d4d35854a1cf7fb170c8e133a5e40a9d19e7fc17;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git [PATCH] remove lock prefix from is_at_popf() tests The lock prefix will cause an exception when used with the popf instruction, so no need to continue searching after it's found. Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com> Signed-off-by: Andi Kleen --- diff --git a/arch/x86_64/kernel/ptrace.c b/arch/x86_64/kernel/ptrace.c index 3a52c7bcfd12..412c6a8bf906 100644 --- a/arch/x86_64/kernel/ptrace.c +++ b/arch/x86_64/kernel/ptrace.c @@ -138,7 +138,7 @@ static int is_at_popf(struct task_struct *child, struct pt_regs *regs) case 0x26: case 0x2e: case 0x36: case 0x3e: case 0x64: case 0x65: - case 0xf0: case 0xf2: case 0xf3: + case 0xf2: case 0xf3: continue; case 0x40 ... 0x4f: @@ -148,7 +148,7 @@ static int is_at_popf(struct task_struct *child, struct pt_regs *regs) /* 64-bit mode: REX prefix */ continue; - /* CHECKME: f0, f2, f3 */ + /* CHECKME: f2, f3 */ /* * pushf: NOTE! We should probably not let