From caad3c2a15dfa2e0da8cf51a57c052372123483c Mon Sep 17 00:00:00 2001 From: Chuck Ebbert <76306.1226@compuserve.com> Date: Sun, 25 Jun 2006 05:46:53 -0700 Subject: [PATCH] [PATCH] i386: cpu_relax() in crash.c and doublefault.c Add cpu_relax() to infinite loops in crash.c and doublefault.c. This is the safest change. Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com> Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/i386/kernel/crash.c | 3 ++- arch/i386/kernel/doublefault.c | 3 ++- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/i386/kernel/crash.c b/arch/i386/kernel/crash.c index 2b0cfce24a61..21dc1bbb8067 100644 --- a/arch/i386/kernel/crash.c +++ b/arch/i386/kernel/crash.c @@ -114,7 +114,8 @@ static int crash_nmi_callback(struct pt_regs *regs, int cpu) atomic_dec(&waiting_for_crash_ipi); /* Assume hlt works */ halt(); - for(;;); + for (;;) + cpu_relax(); return 1; } diff --git a/arch/i386/kernel/doublefault.c b/arch/i386/kernel/doublefault.c index 5edb1d379add..b4d14c2eb345 100644 --- a/arch/i386/kernel/doublefault.c +++ b/arch/i386/kernel/doublefault.c @@ -44,7 +44,8 @@ static void doublefault_fn(void) } } - for (;;) /* nothing */; + for (;;) + cpu_relax(); } struct tss_struct doublefault_tss __cacheline_aligned = { -- 2.39.5