Messages in this thread Patch in this message |  | | From | Brian Gerst <> | | Subject | [PATCH 3/3] x86-64: Simplify loading initial_gs | | Date | Sat, 17 Jul 2010 09:03:28 -0400 |
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Load initial_gs as two 32-bit values instead of splitting a 64-bit value.
Signed-off-by: Brian Gerst <brgerst@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
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