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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>
Cc: "pbonzini@redhat.com" <pbonzini@redhat.com>,
	"rkrcmar@redhat.com" <rkrcmar@redhat.com>,
	"joro@8bytes.org" <joro@8bytes.org>,
	"vkuznets@redhat.com" <vkuznets@redhat.com>,
	"rkagan@virtuozzo.com" <rkagan@virtuozzo.com>,
	"graf@amazon.com" <graf@amazon.com>,
	"jschoenh@amazon.de" <jschoenh@amazon.de>,
	"karahmed@amazon.de" <karahmed@amazon.de>,
	"rimasluk@amazon.com" <rimasluk@amazon.com>,
	"Grimm, Jon" <Jon.Grimm@amd.com>,
	"Suthikulpanit, Suravee" <Suravee.Suthikulpanit@amd.com>
Subject: [PATCH v4 10/17] kvm: x86: hyperv: Use APICv update request interface
Date: Fri, 1 Nov 2019 22:41:34 +0000	[thread overview]
Message-ID: <1572648072-84536-11-git-send-email-suravee.suthikulpanit@amd.com> (raw)
In-Reply-To: <1572648072-84536-1-git-send-email-suravee.suthikulpanit@amd.com>

Since disabling APICv has to be done for all vcpus on AMD-based
system, adopt the newly introduced kvm_request_apicv_update()
interface, and introduce a new APICv deactivate bit for Hyper-V.

Also, remove the kvm_vcpu_deactivate_apicv() since no longer used.

Cc: Roman Kagan <rkagan@virtuozzo.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
---
 arch/x86/include/asm/kvm_host.h |  2 +-
 arch/x86/kvm/hyperv.c           |  5 +++--
 arch/x86/kvm/x86.c              | 13 -------------
 3 files changed, 4 insertions(+), 16 deletions(-)

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index f93d347..a6475fd 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -855,6 +855,7 @@ enum kvm_irqchip_mode {
 };
 
 #define APICV_DEACT_BIT_DISABLE    0
+#define APICV_DEACT_BIT_HYPERV     1
 
 struct kvm_arch {
 	unsigned long n_used_mmu_pages;
@@ -1421,7 +1422,6 @@ gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
 				struct x86_exception *exception);
 
-void kvm_vcpu_deactivate_apicv(struct kvm_vcpu *vcpu);
 bool kvm_apicv_activated(struct kvm *kvm);
 void kvm_apicv_init(struct kvm *kvm, bool enable);
 void kvm_vcpu_update_apicv(struct kvm_vcpu *vcpu);
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
index fff790a..aa93b46 100644
--- a/arch/x86/kvm/hyperv.c
+++ b/arch/x86/kvm/hyperv.c
@@ -772,9 +772,10 @@ int kvm_hv_activate_synic(struct kvm_vcpu *vcpu, bool dont_zero_synic_pages)
 
 	/*
 	 * Hyper-V SynIC auto EOI SINT's are
-	 * not compatible with APICV, so deactivate APICV
+	 * not compatible with APICV, so request
+	 * to deactivate APICV permanently.
 	 */
-	kvm_vcpu_deactivate_apicv(vcpu);
+	kvm_request_apicv_update(vcpu->kvm, false, APICV_DEACT_BIT_HYPERV);
 	synic->active = true;
 	synic->dont_zero_synic_pages = dont_zero_synic_pages;
 	return 0;
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index c09ff78..0aa2833 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -7189,19 +7189,6 @@ static void kvm_pv_kick_cpu_op(struct kvm *kvm, unsigned long flags, int apicid)
 	kvm_irq_delivery_to_apic(kvm, NULL, &lapic_irq, NULL);
 }
 
-void kvm_vcpu_deactivate_apicv(struct kvm_vcpu *vcpu)
-{
-	if (!lapic_in_kernel(vcpu)) {
-		WARN_ON_ONCE(vcpu->arch.apicv_active);
-		return;
-	}
-	if (!vcpu->arch.apicv_active)
-		return;
-
-	vcpu->arch.apicv_active = false;
-	kvm_x86_ops->refresh_apicv_exec_ctrl(vcpu);
-}
-
 bool kvm_apicv_activated(struct kvm *kvm)
 {
 	return (READ_ONCE(kvm->arch.apicv_deact_msk) == 0);
-- 
1.8.3.1


  parent reply	other threads:[~2019-11-01 22:41 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-01 22:41 [PATCH v4 00/17] kvm: x86: Support AMD SVM AVIC w/ in-kernel irqchip mode Suthikulpanit, Suravee
2019-11-01 22:41 ` [PATCH v4 01/17] kvm: x86: Modify kvm_x86_ops.get_enable_apicv() to use struct kvm parameter Suthikulpanit, Suravee
2019-11-01 22:41 ` [PATCH v4 02/17] kvm: lapic: Introduce APICv update helper function Suthikulpanit, Suravee
2019-11-01 22:41 ` [PATCH v4 03/17] kvm: x86: Introduce APICv deactivate bits Suthikulpanit, Suravee
2019-11-02  9:51   ` Paolo Bonzini
2019-11-01 22:41 ` [PATCH v4 04/17] kvm: x86: Add support for activate/de-activate APICv at runtime Suthikulpanit, Suravee
2019-11-02  9:52   ` Paolo Bonzini
2019-11-04 19:22     ` Suthikulpanit, Suravee
2019-11-01 22:41 ` [PATCH v4 05/17] kvm: x86: Add APICv activate/deactivate request trace points Suthikulpanit, Suravee
2019-11-01 22:41 ` [PATCH v4 06/17] kvm: x86: svm: Add support to activate/deactivate posted interrupts Suthikulpanit, Suravee
2019-11-01 22:41 ` [PATCH v4 07/17] svm: Add support for setup/destroy virutal APIC backing page for AVIC Suthikulpanit, Suravee
2019-11-04 21:53   ` Roman Kagan
2019-11-12  0:05     ` Suravee Suthikulpanit
2019-11-01 22:41 ` [PATCH v4 08/17] kvm: x86: Introduce APICv pre-update hook Suthikulpanit, Suravee
2019-11-04 22:05   ` Roman Kagan
2019-11-12  0:08     ` Suravee Suthikulpanit
2019-11-12 11:12       ` Roman Kagan
2019-11-01 22:41 ` [PATCH v4 09/17] svm: Add support for activate/deactivate AVIC at runtime Suthikulpanit, Suravee
2019-11-01 22:41 ` Suthikulpanit, Suravee [this message]
2019-11-01 22:41 ` [PATCH v4 11/17] svm: Deactivate AVIC when launching guest with nested SVM support Suthikulpanit, Suravee
2019-11-01 22:41 ` [PATCH v4 12/17] svm: Temporary deactivate AVIC during ExtINT handling Suthikulpanit, Suravee
2019-11-02 10:01   ` Paolo Bonzini
2019-11-01 22:41 ` [PATCH v4 13/17] kvm: i8254: Deactivate APICv when using in-kernel PIT re-injection mode Suthikulpanit, Suravee
2019-11-02  9:57   ` Paolo Bonzini
2019-11-04 18:54     ` Suthikulpanit, Suravee
2019-11-04 21:49       ` Paolo Bonzini
2019-11-05  7:05         ` Graf (AWS), Alexander
2019-11-05  8:40           ` Roman Kagan
2019-11-04 23:17     ` Roman Kagan
2019-11-05 22:47       ` Paolo Bonzini
2019-11-11 17:37         ` Suravee Suthikulpanit
2019-11-12 12:22           ` Roman Kagan
2019-11-01 22:41 ` [PATCH v4 14/17] kvm: lapic: Clean up APIC predefined macros Suthikulpanit, Suravee
2019-11-01 22:41 ` [PATCH v4 15/17] kvm: ioapic: Refactor kvm_ioapic_update_eoi() Suthikulpanit, Suravee
2019-11-01 22:41 ` [PATCH v4 16/17] kvm: ioapic: Lazy update IOAPIC EOI Suthikulpanit, Suravee
2019-11-01 22:41 ` [PATCH v4 17/17] svm: Allow AVIC with in-kernel irqchip mode Suthikulpanit, Suravee

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