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Lunev" , devel@openvz.org, Konstantin Khorenko X-Mailer: b4 0.16.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2826; i=khorenko@virtuozzo.com; h=from:subject:message-id; bh=l+1FArzaTarBDpgoPJuJ/+cXYQmr+hvho00H2RI0xAQ=; b=owEBbQKS/ZANAwAKAVGWCkf5YVwqAcsmYgBqtVq+ltMtN5rlRMz946iiGOs/a9hw5x/FGca+p XLdpL72esiJAjMEAAEKAB0WIQRWD23IPcXT0GO9CCxRlgpH+WFcKgUCarVavgAKCRBRlgpH+WFc Kn05D/9pHKUzvesseUUwll4M1UfTIqVro4WwbdDCAdI+NhKmrwGSuwD64ItVgFdFfq/EwcGyWnB TKgkhA1AaOjmG4Wrg6pyi0zZyKuQ/p5w4fdmGhgYFmy93UU3ba/0fEgNHWm6ZiGBb6KrUBzUIr+ 7M9pgpibcznZStlj2TrIVtiMimuwaSNJ6wTV1kovoTfVwXpbzPYOg2KsWmEoh3pBFj3A2IrAFTg AK8e+IB41HWHdOQ7YAP0yud9pt7U1/URryFicfAvUJSip2s6CAoC4VovRIJL+atlzo6Zs4uSITZ D/20pavM10x6B9/kHERNSpbydaIm0jc4ForA243davy6SklTcxxwIC2yuOQgK7hX33XTsZs1hYK 0akmbNt8z60DfJee0OsGeUBCbIszqBpdx2DWomSIoo2sOmOF+MprRflWcPhmarukcFHF1N3U6k3 HB41ZQEf0Zvxys840N0nl+fyolz3u7Bd3aQmLlxtmAhZ3+sGNO8BVhxtEbgm1qblxTMN5btvd+z G5GjoCyKV+BIPGwyEZqhwaCA8desBm2Ss+Kdj94SLwppkbd9b0LWxleOLHthwfoosMAys/lg4dj VzG4rUZzlgl1V9dWo+iFnThntID/00ZPtRSm3W5nZuvqomZWj4xbN8BmY/u4WdF9HHJUaTQxFlB scVod0Hfo1cpA6g== X-Developer-Key: i=khorenko@virtuozzo.com; a=openpgp; fpr=560F6DC83DC5D3D063BD082C51960A47F9615C2A X-OZ-Fwd: true Subject: [Devel] [PATCH hci-8.1 v2 2/2] ms/KVM: nVMX: Immediately refresh APICv controls as needed on nested VM-Exit X-BeenThere: devel@openvz.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: OpenVZ development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: devel-bounces@openvz.org Errors-To: devel-bounces@openvz.org From: Maxim Levitsky JIRA: https://issues.redhat.com/browse/RHEL-151869 commit 29763138830916f46daaa50e83e7f4f907a3236b Author: Dongli Zhang Date: Fri Dec 5 15:19:05 2025 -0800 KVM: nVMX: Immediately refresh APICv controls as needed on nested VM-Exit If an APICv status updated was pended while L2 was active, immediately refresh vmcs01's controls instead of pending KVM_REQ_APICV_UPDATE as kvm_vcpu_update_apicv() only calls into vendor code if a change is necessary. E.g. if APICv is inhibited, and then activated while L2 is running: kvm_vcpu_update_apicv() | -> __kvm_vcpu_update_apicv() | -> apic->apicv_active = true | -> vmx_refresh_apicv_exec_ctrl() | -> vmx->nested.update_vmcs01_apicv_status = true | -> return Then L2 exits to L1: __nested_vmx_vmexit() | -> kvm_make_request(KVM_REQ_APICV_UPDATE) vcpu_enter_guest(): KVM_REQ_APICV_UPDATE -> kvm_vcpu_update_apicv() | -> __kvm_vcpu_update_apicv() | -> return // because if (apic->apicv_active == activate) Reported-by: Chao Gao Closes: https://lore.kernel.org/all/aQ2jmnN8wUYVEawF@intel.com Fixes: 7c69661e225c ("KVM: nVMX: Defer APICv updates while L2 is active until L1 is active") Cc: stable@vger.kernel.org Signed-off-by: Dongli Zhang [sean: write changelog] Link: https://patch.msgid.link/20251205231913.441872-3-seanjc@google.com Signed-off-by: Sean Christopherson Signed-off-by: Maxim Levitsky (cherry picked from commit e299e09009929a5b4a5f209617ab25bcd08e41bb) https://virtuozzo.atlassian.net/browse/VSTOR-147087 Feature: fix ms/kvm Signed-off-by: Konstantin Khorenko --- arch/x86/kvm/vmx/nested.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c index 7ff9a8d2c2c93..8c771d8c35e35 100644 --- a/arch/x86/kvm/vmx/nested.c +++ b/arch/x86/kvm/vmx/nested.c @@ -18,6 +18,7 @@ #include "trace.h" #include "vmx.h" #include "smm.h" +#include "x86_ops.h" static bool __read_mostly enable_shadow_vmcs = 1; module_param_named(enable_shadow_vmcs, enable_shadow_vmcs, bool, S_IRUGO); @@ -5087,7 +5088,7 @@ void __nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 vm_exit_reason, if (vmx->nested.update_vmcs01_apicv_status) { vmx->nested.update_vmcs01_apicv_status = false; - kvm_make_request(KVM_REQ_APICV_UPDATE, vcpu); + vmx_refresh_apicv_exec_ctrl(vcpu); } if (vmx->nested.update_vmcs01_hwapic_isr) { -- 2.43.0 _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel