From: "Suthikulpanit, Suravee" <Suravee.Suthikulpanit@amd.com>
To: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"x86@kernel.org" <x86@kernel.org>
Cc: "joro@8bytes.org" <joro@8bytes.org>,
"rkrcmar@redhat.com" <rkrcmar@redhat.com>,
"pbonzini@redhat.com" <pbonzini@redhat.com>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"mingo@redhat.com" <mingo@redhat.com>,
"bp@alien8.de" <bp@alien8.de>, "hpa@zytor.com" <hpa@zytor.com>,
"jsteckli@amazon.de" <jsteckli@amazon.de>,
"sironi@amazon.de" <sironi@amazon.de>,
"wawei@amazon.de" <wawei@amazon.de>,
"Suthikulpanit, Suravee" <Suravee.Suthikulpanit@amd.com>
Subject: [RFC PATCH 4/8] svm: Add AMD AVIC handlers for APIC ID, DFR and LDR update
Date: Mon, 4 Feb 2019 14:42:13 +0000 [thread overview]
Message-ID: <20190204144128.9489-5-suravee.suthikulpanit@amd.com> (raw)
In-Reply-To: <20190204144128.9489-1-suravee.suthikulpanit@amd.com>
During AVIC temporary deactivation, guest could update APIC ID,
DFR and LDR registers, which would not be trapped by
avic_unaccelerated_ccess_interception(). In this case, we need
to update the AVIC logical APIC ID table accordingly.
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
---
arch/x86/kvm/svm.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 75508f665aef..c33f02b4a19e 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -4649,6 +4649,24 @@ static void avic_handle_dfr_update(struct kvm_vcpu *vcpu)
svm->dfr_reg = dfr;
}
+static void svm_hwapic_ldr_update(struct kvm_vcpu *vcpu)
+{
+ if (svm_get_enable_apicv(vcpu) && !kvm_vcpu_apicv_active(vcpu))
+ avic_handle_ldr_update(vcpu);
+}
+
+static void svm_hwapic_apic_id_update(struct kvm_vcpu *vcpu)
+{
+ if (svm_get_enable_apicv(vcpu) && !kvm_vcpu_apicv_active(vcpu))
+ avic_handle_apic_id_update(vcpu);
+}
+
+static void svm_hwapic_dfr_update(struct kvm_vcpu *vcpu)
+{
+ if (svm_get_enable_apicv(vcpu) && !kvm_vcpu_apicv_active(vcpu))
+ avic_handle_dfr_update(vcpu);
+}
+
static int avic_unaccel_trap_write(struct vcpu_svm *svm)
{
struct kvm_lapic *apic = svm->vcpu.arch.apic;
@@ -7166,6 +7184,9 @@ static struct kvm_x86_ops svm_x86_ops __ro_after_init = {
.load_eoi_exitmap = svm_load_eoi_exitmap,
.hwapic_irr_update = svm_hwapic_irr_update,
.hwapic_isr_update = svm_hwapic_isr_update,
+ .hwapic_apic_id_update = svm_hwapic_apic_id_update,
+ .hwapic_dfr_update = svm_hwapic_dfr_update,
+ .hwapic_ldr_update = svm_hwapic_ldr_update,
.sync_pir_to_irr = kvm_lapic_find_highest_irr,
.apicv_post_state_restore = avic_post_state_restore,
--
2.17.1
next prev parent reply other threads:[~2019-02-04 14:42 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-04 14:41 [RFC PATCH 0/8] KVM: x86: svm: Enabling AVIC with in kernel irqchip Suthikulpanit, Suravee
2019-02-04 14:41 ` [RFC PATCH 1/8] svm: Fix improper check when deactivate AVIC Suthikulpanit, Suravee
2019-02-04 14:42 ` [RFC PATCH 2/8] KVM: x86: Add interface for run-time activate/de-activate APIC virtualization Suthikulpanit, Suravee
2019-02-04 14:42 ` [RFC PATCH 3/8] KVM: x86: Add callback functions for handling APIC ID, DFR and LDR update Suthikulpanit, Suravee
2019-02-04 14:42 ` Suthikulpanit, Suravee [this message]
2019-02-04 14:42 ` [RFC PATCH 5/8] svm: Add support for APIC_ACCESS_PAGE_PRIVATE_MEMSLOT setup/destroy Suthikulpanit, Suravee
2019-02-04 14:42 ` [RFC PATCH 6/8] svm: Temporary deactivate AVIC during ExtINT handling Suthikulpanit, Suravee
2019-02-04 14:42 ` [RFC PATCH 7/8] KVM: i8254: Remove need for irq ack notifier Suthikulpanit, Suravee
2019-02-06 10:29 ` Paolo Bonzini
2019-02-06 12:53 ` Julian Stecklina
2019-02-04 14:42 ` [RFC PATCH 8/8] svm: Allow AVIC with in-kernel irqchip mode Suthikulpanit, Suravee
2019-02-05 18:34 ` Alex Williamson
2019-02-06 11:20 ` Suthikulpanit, Suravee
2019-06-15 14:28 ` Maxim Levitsky
2019-06-18 14:34 ` Suthikulpanit, Suravee
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