Author: jkim
Date: Mon Aug 30 21:19:42 2010
New Revision: 212026
URL: http://svn.freebsd.org/changeset/base/212026
Log:
Save MSR_FSBASE, MSR_GSBASE and MSR_KGSBASE directly to PCB as we do not use
these values in the function.
Modified:
head/sys/amd64/amd64/cpu_switch.S
Modified: head/sys/amd64/amd64/cpu_switch.S
==============================================================================
--- head/sys/amd64/amd64/cpu_switch.S Mon Aug 30 21:18:59 2010
(r212025)
+++ head/sys/amd64/amd64/cpu_switch.S Mon Aug 30 21:19:42 2010
(r212026)
@@ -338,19 +338,16 @@ ENTRY(savectx)
movl $MSR_FSBASE,%ecx
rdmsr
- shlq $32,%rdx
- leaq (%rax,%rdx),%rax
- movq %rax,PCB_FSBASE(%rdi)
+ movl %eax,PCB_FSBASE(%rdi)
+ movl %edx,PCB_FSBASE+4(%rdi)
movl $MSR_GSBASE,%ecx
rdmsr
- shlq $32,%rdx
- leaq (%rax,%rdx),%rax
- movq %rax,PCB_GSBASE(%rdi)
+ movl %eax,PCB_GSBASE(%rdi)
+ movl %edx,PCB_GSBASE+4(%rdi)
movl $MSR_KGSBASE,%ecx
rdmsr
- shlq $32,%rdx
- leaq (%rax,%rdx),%rax
- movq %rax,PCB_KGSBASE(%rdi)
+ movl %eax,PCB_KGSBASE(%rdi)
+ movl %edx,PCB_KGSBASE+4(%rdi)
sgdt PCB_GDT(%rdi)
sidt PCB_IDT(%rdi)
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