diff options
| author | Avi Kivity <avi@redhat.com> | 2010-10-19 18:48:35 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-12-09 13:32:45 -0800 |
| commit | a700b4efaa3451c9fe0ddfb57c9024e8ad767c47 (patch) | |
| tree | f7050f05d7050b0604d9f5fd9bf606fe67876a9b | |
| parent | c829f3431b6fe186c37bad3a5e1dbb8084de0581 (diff) | |
KVM: Correct ordering of ldt reload wrt fs/gs reload
commit 0a77fe4c188e25917799f2356d4aa5e6d80c39a2 upstream.
If fs or gs refer to the ldt, they must be reloaded after the ldt. Reorder
the code to that effect.
Userspace code that uses the ldt with kvm is nonexistent, so this doesn't fix
a user-visible bug.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | arch/x86/kvm/svm.c | 2 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx.c | 4 |
2 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 2a02a659f1f..89055e00213 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -3281,6 +3281,7 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu) vcpu->arch.regs[VCPU_REGS_RIP] = svm->vmcb->save.rip; load_host_msrs(vcpu); + kvm_load_ldt(ldt_selector); loadsegment(fs, fs_selector); #ifdef CONFIG_X86_64 load_gs_index(gs_selector); @@ -3288,7 +3289,6 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu) #else loadsegment(gs, gs_selector); #endif - kvm_load_ldt(ldt_selector); reload_tss(vcpu); diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 7bddfab1201..f6ce8bf00c3 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -846,8 +846,6 @@ static void __vmx_load_host_state(struct vcpu_vmx *vmx) ++vmx->vcpu.stat.host_state_reload; vmx->host_state.loaded = 0; - if (vmx->host_state.fs_reload_needed) - loadsegment(fs, vmx->host_state.fs_sel); if (vmx->host_state.gs_ldt_reload_needed) { kvm_load_ldt(vmx->host_state.ldt_sel); #ifdef CONFIG_X86_64 @@ -857,6 +855,8 @@ static void __vmx_load_host_state(struct vcpu_vmx *vmx) loadsegment(gs, vmx->host_state.gs_sel); #endif } + if (vmx->host_state.fs_reload_needed) + loadsegment(fs, vmx->host_state.fs_sel); reload_tss(); #ifdef CONFIG_X86_64 if (is_long_mode(&vmx->vcpu)) { |