From: Paolo Bonzini <pbonzini@redhat.com>
To: "Suthikulpanit, Suravee" <Suravee.Suthikulpanit@amd.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>
Cc: "joro@8bytes.org" <joro@8bytes.org>,
"rkrcmar@redhat.com" <rkrcmar@redhat.com>
Subject: Re: [PATCH 1/6] KVM: x86: Add callback functions for handling APIC ID, DFR and LDR update
Date: Wed, 3 Jul 2019 23:16:41 +0200 [thread overview]
Message-ID: <15e1b25c-906a-03dd-cb69-6b99c8c98ff7@redhat.com> (raw)
In-Reply-To: <20190322115702.10166-2-suravee.suthikulpanit@amd.com>
On 22/03/19 12:57, Suthikulpanit, Suravee wrote:
> Add hooks for handling the case when guest VM update APIC ID, DFR and LDR.
> This is needed during AMD AVIC is temporary deactivated.
>
> Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Why not do this later when AVIC is reactivated, in
svm_refresh_apicv_exec_ctrl?
Thanks,
Paolo
> ---
> arch/x86/include/asm/kvm_host.h | 3 +++
> arch/x86/kvm/lapic.c | 6 ++++++
> 2 files changed, 9 insertions(+)
>
> diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
> index a5db4475e72d..1906e205e6a3 100644
> --- a/arch/x86/include/asm/kvm_host.h
> +++ b/arch/x86/include/asm/kvm_host.h
> @@ -1077,6 +1077,9 @@ struct kvm_x86_ops {
> void (*refresh_apicv_exec_ctrl)(struct kvm_vcpu *vcpu);
> void (*hwapic_irr_update)(struct kvm_vcpu *vcpu, int max_irr);
> void (*hwapic_isr_update)(struct kvm_vcpu *vcpu, int isr);
> + void (*hwapic_apic_id_update)(struct kvm_vcpu *vcpu);
> + void (*hwapic_dfr_update)(struct kvm_vcpu *vcpu);
> + void (*hwapic_ldr_update)(struct kvm_vcpu *vcpu);
> bool (*guest_apic_has_interrupt)(struct kvm_vcpu *vcpu);
> void (*load_eoi_exitmap)(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap);
> void (*set_virtual_apic_mode)(struct kvm_vcpu *vcpu);
> diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
> index 991fdf7fc17f..95295cf81283 100644
> --- a/arch/x86/kvm/lapic.c
> +++ b/arch/x86/kvm/lapic.c
> @@ -262,12 +262,16 @@ static inline void apic_set_spiv(struct kvm_lapic *apic, u32 val)
> static inline void kvm_apic_set_xapic_id(struct kvm_lapic *apic, u8 id)
> {
> kvm_lapic_set_reg(apic, APIC_ID, id << 24);
> + if (kvm_x86_ops->hwapic_apic_id_update)
> + kvm_x86_ops->hwapic_apic_id_update(apic->vcpu);
> recalculate_apic_map(apic->vcpu->kvm);
> }
>
> static inline void kvm_apic_set_ldr(struct kvm_lapic *apic, u32 id)
> {
> kvm_lapic_set_reg(apic, APIC_LDR, id);
> + if (kvm_x86_ops->hwapic_ldr_update)
> + kvm_x86_ops->hwapic_ldr_update(apic->vcpu);
> recalculate_apic_map(apic->vcpu->kvm);
> }
>
> @@ -1836,6 +1840,8 @@ int kvm_lapic_reg_write(struct kvm_lapic *apic, u32 reg, u32 val)
> case APIC_DFR:
> if (!apic_x2apic_mode(apic)) {
> kvm_lapic_set_reg(apic, APIC_DFR, val | 0x0FFFFFFF);
> + if (kvm_x86_ops->hwapic_dfr_update)
> + kvm_x86_ops->hwapic_dfr_update(apic->vcpu);
> recalculate_apic_map(apic->vcpu->kvm);
> } else
> ret = 1;
>
next prev parent reply other threads:[~2019-07-03 21:16 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-22 11:57 [PATCH 0/6] KVM/x86: Add workaround to support ExtINT with AVIC Suthikulpanit, Suravee
2019-03-22 11:57 ` [PATCH 1/6] KVM: x86: Add callback functions for handling APIC ID, DFR and LDR update Suthikulpanit, Suravee
2019-07-03 21:16 ` Paolo Bonzini [this message]
2019-07-17 19:44 ` Suthikulpanit, Suravee
2019-03-22 11:57 ` [PATCH 2/6] svm: Add AMD AVIC handlers for " Suthikulpanit, Suravee
2019-03-22 11:57 ` [PATCH 3/6] svm: Add support for APIC_ACCESS_PAGE_PRIVATE_MEMSLOT setup/destroy Suthikulpanit, Suravee
2019-05-08 19:14 ` Jan H. Schönherr
2019-06-30 16:19 ` Suthikulpanit, Suravee
2019-03-22 11:57 ` [PATCH 4/6] kvm: lapic: Add apicv activate/deactivate helper function Suthikulpanit, Suravee
2019-05-08 22:27 ` Jan H. Schönherr
2019-07-15 22:35 ` Suthikulpanit, Suravee
2019-03-22 11:57 ` [PATCH 5/6] KVM: x86: Add interface for run-time activate/de-activate APIC virtualization Suthikulpanit, Suravee
2019-05-08 20:45 ` Jan H. Schönherr
2019-03-22 11:57 ` [PATCH 6/6] svm: Temporary deactivate AVIC during ExtINT handling Suthikulpanit, Suravee
2019-05-08 17:37 ` Jan H. Schönherr
2019-06-03 18:58 ` Suthikulpanit, Suravee
2019-04-04 21:30 ` [PATCH 0/6] KVM/x86: Add workaround to support ExtINT with AVIC rkrcmar
2019-04-04 22:06 ` rkrcmar
2019-04-04 22:06 ` rkrcmar
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