[linux-pm] [PATCH] x86 suspend: Sanitize wakeup_64.S
Rafael J. Wysocki
rjw at sisk.pl
Sun Oct 26 12:42:19 PDT 2008
Hi,
Please queue as .29 material.
Thanks,
Rafael
---
From: Rafael J. Wysocki <rjw at sisk.pl>
Subject: x86 suspend: Sanitize wakeup_64.S
Segment registers are already set by head_64.S, which jumps into
wakeup_64.S, to the same values that wakeup_64.S wants them to
contain. Remove the unnecessary initialization of segment registers
from wakeup_64.S.
Add hlt into the endless loop under bogus_64_magic.
Signed-off-by: Rafael J. Wysocki <rjw at sisk.pl>
---
arch/x86/kernel/acpi/wakeup_64.S | 7 +------
1 files changed, 1 insertions(+), 6 deletions(-)
diff --git a/arch/x86/kernel/acpi/wakeup_64.S b/arch/x86/kernel/acpi/wakeup_64.S
index bcc2934..0c5bf2f 100644
--- a/arch/x86/kernel/acpi/wakeup_64.S
+++ b/arch/x86/kernel/acpi/wakeup_64.S
@@ -19,12 +19,6 @@ wakeup_long64:
cmpq %rdx, %rax
jne bogus_64_magic
- movw $__KERNEL_DS, %ax
- movw %ax, %ss
- movw %ax, %ds
- movw %ax, %es
- movw %ax, %fs
- movw %ax, %gs
movq saved_rsp, %rsp
movq saved_rbx, %rbx
@@ -36,6 +30,7 @@ wakeup_long64:
jmp *%rax
bogus_64_magic:
+ hlt
jmp bogus_64_magic
.align 2
--
1.5.6
More information about the linux-pm
mailing list