On Tue, 29 Aug 2006 16:59:36 -0700
keith mannthey <[email protected]> wrote:
> I moved to mm2 to mm3 and had trouble booting again with my hardware.
> In -mm3 the kernel boots but about the time init starts the whole box
> just stops doing anything. Sysrq works and I dumped the tasks but
> nothing look too far out of place.
>
> I did a bisection of -mm3 and found x86_64-mm-spin-irqs-enabled.patch to
> be the cause.
Yes, Hugh was hitting that today and the following has emerged...
From: Andrew Morton <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
---
include/asm-x86_64/spinlock.h | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff -puN include/asm-x86_64/spinlock.h~x86_64-mm-spin-irqs-enabled-fix include/asm-x86_64/spinlock.h
--- a/include/asm-x86_64/spinlock.h~x86_64-mm-spin-irqs-enabled-fix
+++ a/include/asm-x86_64/spinlock.h
@@ -51,7 +51,7 @@ static inline void __raw_spin_lock_flags
{
asm volatile(
"\n1:\t"
- LOCK_PREFIX "; decb %0\n\t"
+ LOCK_PREFIX "; decl %0\n\t"
"js 2f\n\t"
LOCK_SECTION_START("")
"2:\t"
@@ -60,7 +60,7 @@ static inline void __raw_spin_lock_flags
"sti\n\t"
"3:\t"
"rep;nop\n\t"
- "cmpb $0, %0\n\t"
+ "cmpl $0, %0\n\t"
"jle 3b\n\t"
"cli\n\t"
"jmp 1b\n"
_
-
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