From: Paolo Bonzini <pbonzini@redhat.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: vkuznets@redhat.com, mlevitsk@redhat.com,
Sean Christopherson <sean.j.christopherson@intel.com>,
Jim Mattson <jmattson@google.com>
Subject: [PATCH 20/28] KVM: SVM: preserve VGIF across VMCB switch
Date: Tue, 26 May 2020 13:23:00 -0400 [thread overview]
Message-ID: <20200526172308.111575-21-pbonzini@redhat.com> (raw)
In-Reply-To: <20200526172308.111575-1-pbonzini@redhat.com>
There is only one GIF flag for the whole processor, so make sure it is
not clobbered when switching to L2 (in which case we also have to include
the V_GIF_ENABLE_MASK, lest we confuse enable_gif/disable_gif/gif_set).
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
arch/x86/kvm/svm/nested.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
index f5956ecfeeac..607531db8a94 100644
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -293,6 +293,7 @@ static void nested_prepare_vmcb_save(struct vcpu_svm *svm, struct vmcb *nested_v
static void nested_prepare_vmcb_control(struct vcpu_svm *svm)
{
+ const u32 mask = V_INTR_MASKING_MASK | V_GIF_ENABLE_MASK | V_GIF_MASK;
if (svm->nested.ctl.nested_ctl & SVM_NESTED_CTL_NP_ENABLE)
nested_svm_init_mmu_context(&svm->vcpu);
@@ -308,7 +309,10 @@ static void nested_prepare_vmcb_control(struct vcpu_svm *svm)
svm->vmcb->control.tsc_offset = svm->vcpu.arch.tsc_offset =
svm->vcpu.arch.l1_tsc_offset + svm->nested.ctl.tsc_offset;
- svm->vmcb->control.int_ctl = svm->nested.ctl.int_ctl | V_INTR_MASKING_MASK;
+ svm->vmcb->control.int_ctl =
+ (svm->nested.ctl.int_ctl & ~mask) |
+ (svm->nested.hsave->control.int_ctl & mask);
+
svm->vmcb->control.virt_ext = svm->nested.ctl.virt_ext;
svm->vmcb->control.int_vector = svm->nested.ctl.int_vector;
svm->vmcb->control.int_state = svm->nested.ctl.int_state;
--
2.26.2
next prev parent reply other threads:[~2020-05-26 17:24 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-26 17:22 [PATCH v2 00/28] KVM: nSVM: event fixes and migration support Paolo Bonzini
2020-05-26 17:22 ` [PATCH 01/28] KVM: x86: track manually whether an event has been injected Paolo Bonzini
2020-05-26 17:22 ` [PATCH 02/28] KVM: x86: enable event window in inject_pending_event Paolo Bonzini
2020-05-29 2:16 ` Krish Sadhukhan
2020-05-29 8:47 ` Paolo Bonzini
2020-05-26 17:22 ` [PATCH 03/28] KVM: nSVM: inject exceptions via svm_check_nested_events Paolo Bonzini
2021-03-06 1:39 ` Sean Christopherson
2021-03-06 9:26 ` Paolo Bonzini
2021-03-08 16:44 ` Sean Christopherson
2021-03-08 17:28 ` Paolo Bonzini
2021-03-08 20:43 ` Sean Christopherson
2021-03-08 22:51 ` Paolo Bonzini
2020-05-26 17:22 ` [PATCH 04/28] KVM: nSVM: remove exit_required Paolo Bonzini
2020-05-26 17:22 ` [PATCH 05/28] KVM: nSVM: correctly inject INIT vmexits Paolo Bonzini
2020-05-29 6:46 ` Krish Sadhukhan
2020-05-29 8:47 ` Paolo Bonzini
2020-05-26 17:22 ` [PATCH 06/28] KVM: SVM: always update CR3 in VMCB Paolo Bonzini
2020-05-26 17:22 ` [PATCH 07/28] KVM: nVMX: always update CR3 in VMCS Paolo Bonzini
2020-05-26 17:22 ` [PATCH 08/28] KVM: nSVM: move map argument out of enter_svm_guest_mode Paolo Bonzini
2020-05-26 17:22 ` [PATCH 09/28] KVM: nSVM: extract load_nested_vmcb_control Paolo Bonzini
2020-05-26 17:22 ` [PATCH 10/28] KVM: nSVM: extract preparation of VMCB for nested run Paolo Bonzini
2020-05-26 17:22 ` [PATCH 11/28] KVM: nSVM: move MMU setup to nested_prepare_vmcb_control Paolo Bonzini
2020-05-26 17:22 ` [PATCH 12/28] KVM: nSVM: clean up tsc_offset update Paolo Bonzini
2020-05-26 17:22 ` [PATCH 13/28] KVM: nSVM: pass vmcb_control_area to copy_vmcb_control_area Paolo Bonzini
2020-05-26 17:22 ` [PATCH 14/28] KVM: nSVM: remove trailing padding for struct vmcb_control_area Paolo Bonzini
2020-05-26 17:22 ` [PATCH 15/28] KVM: nSVM: save all control fields in svm->nested Paolo Bonzini
2020-05-26 17:22 ` [PATCH 16/28] KVM: nSVM: restore clobbered INT_CTL fields after clearing VINTR Paolo Bonzini
2020-05-26 17:22 ` [PATCH 17/28] KVM: nSVM: synchronize VMCB controls updated by the processor on every vmexit Paolo Bonzini
2020-05-26 17:22 ` [PATCH 18/28] KVM: nSVM: remove unnecessary if Paolo Bonzini
2020-05-26 17:22 ` [PATCH 19/28] KVM: nSVM: extract svm_set_gif Paolo Bonzini
2020-05-26 17:23 ` Paolo Bonzini [this message]
2020-05-26 17:23 ` [PATCH 21/28] KVM: nSVM: synthesize correct EXITINTINFO on vmexit Paolo Bonzini
2020-05-26 17:23 ` [PATCH 22/28] KVM: nSVM: remove HF_VINTR_MASK Paolo Bonzini
2020-05-26 17:23 ` [PATCH 23/28] KVM: nSVM: remove HF_HIF_MASK Paolo Bonzini
2020-05-26 17:23 ` [PATCH 24/28] KVM: nSVM: split nested_vmcb_check_controls Paolo Bonzini
2020-05-26 17:23 ` [PATCH 25/28] KVM: nSVM: leave guest mode when clearing EFER.SVME Paolo Bonzini
2020-05-26 17:23 ` [PATCH 26/28] KVM: MMU: pass arbitrary CR0/CR4/EFER to kvm_init_shadow_mmu Paolo Bonzini
2020-05-26 17:23 ` [PATCH 27/28] selftests: kvm: add a SVM version of state-test Paolo Bonzini
2020-05-26 17:23 ` [PATCH 28/28] KVM: nSVM: implement KVM_GET_NESTED_STATE and KVM_SET_NESTED_STATE Paolo Bonzini
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