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 07/17] svm: Add support for setup/destroy virutal APIC backing page for AVIC Date: Fri, 1 Nov 2019 22:41:30 +0000 [thread overview] Message-ID: <1572648072-84536-8-git-send-email-suravee.suthikulpanit@amd.com> (raw) In-Reply-To: <1572648072-84536-1-git-send-email-suravee.suthikulpanit@amd.com> Re-factor avic_init_access_page() to avic_update_access_page() since activate/deactivate AVIC requires setting/unsetting the memory region used for virtual APIC backing page (APIC_ACCESS_PAGE_PRIVATE_MEMSLOT). Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> --- arch/x86/kvm/svm.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index b7d0adc..46842a2 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -1668,23 +1668,22 @@ static u64 *avic_get_physical_id_entry(struct kvm_vcpu *vcpu, * field of the VMCB. Therefore, we set up the * APIC_ACCESS_PAGE_PRIVATE_MEMSLOT (4KB) here. */ -static int avic_init_access_page(struct kvm_vcpu *vcpu) +static int avic_update_access_page(struct kvm *kvm, bool activate) { - struct kvm *kvm = vcpu->kvm; int ret = 0; mutex_lock(&kvm->slots_lock); - if (kvm->arch.apic_access_page_done) + if (kvm->arch.apic_access_page_done == activate) goto out; ret = __x86_set_memory_region(kvm, APIC_ACCESS_PAGE_PRIVATE_MEMSLOT, APIC_DEFAULT_PHYS_BASE, - PAGE_SIZE); + activate ? PAGE_SIZE : 0); if (ret) goto out; - kvm->arch.apic_access_page_done = true; + kvm->arch.apic_access_page_done = activate; out: mutex_unlock(&kvm->slots_lock); return ret; @@ -1697,7 +1696,7 @@ static int avic_init_backing_page(struct kvm_vcpu *vcpu) int id = vcpu->vcpu_id; struct vcpu_svm *svm = to_svm(vcpu); - ret = avic_init_access_page(vcpu); + ret = avic_update_access_page(vcpu->kvm, true); if (ret) return ret; -- 1.8.3.1
next prev 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 ` Suthikulpanit, Suravee [this message] 2019-11-04 21:53 ` [PATCH v4 07/17] svm: Add support for setup/destroy virutal APIC backing page for AVIC 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 ` [PATCH v4 10/17] kvm: x86: hyperv: Use APICv update request interface Suthikulpanit, Suravee 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
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=1572648072-84536-8-git-send-email-suravee.suthikulpanit@amd.com \ --to=suravee.suthikulpanit@amd.com \ --cc=Jon.Grimm@amd.com \ --cc=graf@amazon.com \ --cc=joro@8bytes.org \ --cc=jschoenh@amazon.de \ --cc=karahmed@amazon.de \ --cc=kvm@vger.kernel.org \ --cc=linux-kernel@vger.kernel.org \ --cc=pbonzini@redhat.com \ --cc=rimasluk@amazon.com \ --cc=rkagan@virtuozzo.com \ --cc=rkrcmar@redhat.com \ --cc=vkuznets@redhat.com \ --subject='Re: [PATCH v4 07/17] svm: Add support for setup/destroy virutal APIC backing page for AVIC' \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: link
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for NNTP newsgroup(s).