diff options
Diffstat (limited to 'arch/x86/lib/rwsem.S')
| -rw-r--r-- | arch/x86/lib/rwsem.S | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/lib/rwsem.S b/arch/x86/lib/rwsem.S index a37462a23546..bf2c6074efd2 100644 --- a/arch/x86/lib/rwsem.S +++ b/arch/x86/lib/rwsem.S @@ -29,8 +29,10 @@ * there is contention on the semaphore. * * %eax contains the semaphore pointer on entry. Save the C-clobbered - * registers (%eax, %edx and %ecx) except %eax whish is either a return - * value or just clobbered.. + * registers (%eax, %edx and %ecx) except %eax which is either a return + * value or just gets clobbered. Same is true for %edx so make sure GCC + * reloads it after the slow path, by making it hold a temporary, for + * example see ____down_write(). */ #define save_common_regs \ |