Prev: [PATCH 1/3] x86: Remove redundant K6 MSRs
Next: [PATCH 1/5] arm: mach-davinci: check irq2ctlr() result
From: Brian Gerst on 17 Jul 2010 09:10
Load initial_gs as two 32-bit values instead of splitting a 64-bit value.

Signed-off-by: Brian Gerst <brgerst(a)gmail.com>
---
arch/x86/kernel/head_64.S | 5 ++---
1 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S
index 3d1e6f1..239046b 100644
--- a/arch/x86/kernel/head_64.S
+++ b/arch/x86/kernel/head_64.S
@@ -234,9 +234,8 @@ ENTRY(secondary_startup_64)
* init data section till per cpu areas are set up.
*/
movl $MSR_GS_BASE,%ecx
- movq initial_gs(%rip),%rax
- movq %rax,%rdx
- shrq $32,%rdx
+ movl initial_gs(%rip),%eax
+ movl initial_gs+4(%rip),%edx
wrmsr

/* esi is pointer to real mode structure with interesting info.
--
1.7.1.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo(a)vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
 | 
Pages: 1
Prev: [PATCH 1/3] x86: Remove redundant K6 MSRs
Next: [PATCH 1/5] arm: mach-davinci: check irq2ctlr() result