The patch titled
i386: cpu_relax() in crash.c and doublefault.c
has been added to the -mm tree. Its filename is
i386-cpu_relax-in-crashc-and-doublefaultc.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: i386: cpu_relax() in crash.c and doublefault.c
From: Chuck Ebbert <76306.1226@xxxxxxxxxxxxxx>
Add cpu_relax() to infinite loops in crash.c and doublefault.c. This is
the safest change.
Signed-off-by: Chuck Ebbert <76306.1226@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
arch/i386/kernel/crash.c | 3 ++-
arch/i386/kernel/doublefault.c | 3 ++-
2 files changed, 4 insertions(+), 2 deletions(-)
diff -puN arch/i386/kernel/crash.c~i386-cpu_relax-in-crashc-and-doublefaultc arch/i386/kernel/crash.c
--- a/arch/i386/kernel/crash.c~i386-cpu_relax-in-crashc-and-doublefaultc
+++ a/arch/i386/kernel/crash.c
@@ -125,7 +125,8 @@ static int crash_nmi_callback(struct not
atomic_dec(&waiting_for_crash_ipi);
/* Assume hlt works */
halt();
- for(;;);
+ for (;;)
+ cpu_relax();
return 1;
}
diff -puN arch/i386/kernel/doublefault.c~i386-cpu_relax-in-crashc-and-doublefaultc arch/i386/kernel/doublefault.c
--- a/arch/i386/kernel/doublefault.c~i386-cpu_relax-in-crashc-and-doublefaultc
+++ a/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 = {
_
Patches currently in -mm which might be from 76306.1226@xxxxxxxxxxxxxx are
origin.patch
i386-print-stack-size-in-oops-messages.patch
i386-use-c-code-for-current_thread_info.patch
i386-cpu_relax-in-crashc-and-doublefaultc.patch
binfmt_elf-fix-checks-for-bad-address.patch
binfmt_elf-fix-checks-for-bad-address-fix.patch
-
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