diff options
| author |   Avi Kivity <avi@qumranet.com> | 2006-12-22 01:05:20 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-22 08:55:46 -0800 |
| commit | 36241b8c7cbcc83e7fd534d25e1df8339db8244e (patch) | |
| tree | 7e62afdbe018c826599b83871d33b3c1cdd5a5d9 /drivers | |
| parent | [PATCH] KVM: AMD SVM: handle MSR_STAR in 32-bit mode (diff) | |
| download | linux-dev-36241b8c7cbcc83e7fd534d25e1df8339db8244e.tar.xz linux-dev-36241b8c7cbcc83e7fd534d25e1df8339db8244e.zip | |
[PATCH] KVM: AMD SVM: Save and restore the floating point unit state
Fixes sf bug 1614113 (segfaults in nbench).
Signed-off-by: Avi Kivity <avi@qumranet.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | 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 3bf25795b3ef..59c930f276e2 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); |