Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=36241b8c7cbcc83e7fd534d25e1df8339db8244e
Commit: 36241b8c7cbcc83e7fd534d25e1df8339db8244e
Parent: 0e859cacb0b01bdbe34b5200dd2457d4818248fa
Author: Avi Kivity <[EMAIL PROTECTED]>
AuthorDate: Fri Dec 22 01:05:20 2006 -0800
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Fri Dec 22 08:55:46 2006 -0800
[PATCH] KVM: AMD SVM: Save and restore the floating point unit state
Fixes sf bug 1614113 (segfaults in nbench).
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
drivers/kvm/svm.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c
index 3bf2579..59c930f 100644
--- a/drivers/kvm/svm.c
+++ b/drivers/kvm/svm.c
@@ -575,6 +575,8 @@ static int svm_create_vcpu(struct kvm_vcpu *vcpu)
memset(vcpu->svm->db_regs, 0, sizeof(vcpu->svm->db_regs));
init_vmcb(vcpu->svm->vmcb);
+ fx_init(vcpu);
+
return 0;
out2:
@@ -1387,6 +1389,10 @@ again:
save_db_regs(vcpu->svm->host_db_regs);
load_db_regs(vcpu->svm->db_regs);
}
+
+ fx_save(vcpu->host_fx_image);
+ fx_restore(vcpu->guest_fx_image);
+
asm volatile (
#ifdef CONFIG_X86_64
"push %%rbx; push %%rcx; push %%rdx;"
@@ -1496,6 +1502,9 @@ again:
#endif
: "cc", "memory" );
+ fx_save(vcpu->guest_fx_image);
+ fx_restore(vcpu->host_fx_image);
+
if ((vcpu->svm->vmcb->save.dr7 & 0xff))
load_db_regs(vcpu->svm->host_db_regs);
-
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