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From: Steve Rutherford <srutherford@google.com>
To: Ashish Kalra <Ashish.Kalra@amd.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
	Joerg Roedel <joro@8bytes.org>, Borislav Petkov <bp@suse.de>,
	Tom Lendacky <Thomas.Lendacky@amd.com>, X86 ML <x86@kernel.org>,
	KVM list <kvm@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	David Rientjes <rientjes@google.com>,
	Venu Busireddy <venu.busireddy@oracle.com>,
	Brijesh Singh <brijesh.singh@amd.com>
Subject: Re: [PATCH v8 18/18] KVM: SVM: Enable SEV live migration feature implicitly on Incoming VM(s).
Date: Fri, 29 May 2020 19:09:08 -0700	[thread overview]
Message-ID: <CABayD+eR7e7H_titvO6AVMK1Dv=wGLVvaTMOkhZfpAp=YQH8Sg@mail.gmail.com> (raw)
In-Reply-To: <a70e7ea40c47116339f968b7d2d2bf120f452c1e.1588711355.git.ashish.kalra@amd.com>

On Tue, May 5, 2020 at 2:22 PM Ashish Kalra <Ashish.Kalra@amd.com> wrote:
>
> From: Ashish Kalra <ashish.kalra@amd.com>
>
> For source VM, live migration feature is enabled explicitly
> when the guest is booting, for the incoming VM(s) it is implied.
> This is required for handling A->B->C->... VM migrations case.
>
> Signed-off-by: Ashish Kalra <ashish.kalra@amd.com>
> ---
>  arch/x86/kvm/svm/sev.c | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
> index 6f69c3a47583..ba7c0ebfa1f3 100644
> --- a/arch/x86/kvm/svm/sev.c
> +++ b/arch/x86/kvm/svm/sev.c
> @@ -1592,6 +1592,13 @@ int svm_set_page_enc_bitmap(struct kvm *kvm,
>         if (ret)
>                 goto unlock;
>
> +       /*
> +        * For source VM, live migration feature is enabled
> +        * explicitly when the guest is booting, for the
> +        * incoming VM(s) it is implied.
> +        */
> +       sev_update_migration_flags(kvm, KVM_SEV_LIVE_MIGRATION_ENABLED);
> +
>         bitmap_copy(sev->page_enc_bmap + BIT_WORD(gfn_start), bitmap,
>                     (gfn_end - gfn_start));
>
> --
> 2.17.1
>

Reviewed-by: Steve Rutherford <srutherford@google.com>

  reply	other threads:[~2020-05-30  2:09 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-05 21:13 [PATCH v8 00/18] Add AMD SEV guest live migration support Ashish Kalra
2020-05-05 21:14 ` [PATCH v8 01/18] KVM: SVM: Add KVM_SEV SEND_START command Ashish Kalra
2020-05-05 21:14 ` [PATCH v8 02/18] KVM: SVM: Add KVM_SEND_UPDATE_DATA command Ashish Kalra
2020-05-05 22:48   ` Venu Busireddy
2020-05-05 21:15 ` [PATCH v8 03/18] KVM: SVM: Add KVM_SEV_SEND_FINISH command Ashish Kalra
2020-05-05 22:51   ` Venu Busireddy
2020-05-05 21:15 ` [PATCH v8 04/18] KVM: SVM: Add support for KVM_SEV_RECEIVE_START command Ashish Kalra
2020-05-05 22:52   ` Venu Busireddy
2020-05-05 21:15 ` [PATCH v8 05/18] KVM: SVM: Add KVM_SEV_RECEIVE_UPDATE_DATA command Ashish Kalra
2020-05-05 21:16 ` [PATCH v8 06/18] KVM: SVM: Add KVM_SEV_RECEIVE_FINISH command Ashish Kalra
2020-05-05 21:16 ` [PATCH v8 07/18] KVM: x86: Add AMD SEV specific Hypercall3 Ashish Kalra
2020-05-05 21:17 ` [PATCH v8 08/18] KVM: X86: Introduce KVM_HC_PAGE_ENC_STATUS hypercall Ashish Kalra
2020-05-30  2:05   ` Steve Rutherford
2020-05-05 21:17 ` [PATCH v8 09/18] KVM: x86: Introduce KVM_GET_PAGE_ENC_BITMAP ioctl Ashish Kalra
2020-05-30  2:05   ` Steve Rutherford
2020-05-05 21:17 ` [PATCH v8 10/18] mm: x86: Invoke hypercall when page encryption status is changed Ashish Kalra
2020-05-30  2:06   ` Steve Rutherford
2020-05-05 21:18 ` [PATCH v8 11/18] KVM: x86: Introduce KVM_SET_PAGE_ENC_BITMAP ioctl Ashish Kalra
2020-05-30  2:06   ` Steve Rutherford
2020-05-05 21:18 ` [PATCH v8 12/18] KVM: SVM: Add support for static allocation of unified Page Encryption Bitmap Ashish Kalra
2020-05-30  2:07   ` Steve Rutherford
2020-05-30  5:49     ` Ashish Kalra
2020-12-04 11:08   ` Paolo Bonzini
2020-12-04 21:38     ` Ashish Kalra
2020-12-06 10:19       ` Paolo Bonzini
2020-05-05 21:19 ` [PATCH v8 13/18] KVM: x86: Introduce new KVM_FEATURE_SEV_LIVE_MIGRATION feature & Custom MSR Ashish Kalra
2020-05-30  2:07   ` Steve Rutherford
2020-12-04 11:20   ` Paolo Bonzini
2020-12-04 16:48     ` Sean Christopherson
2020-12-04 17:08       ` Ashish Kalra
2020-12-04 17:23         ` Sean Christopherson
2020-12-06 10:57           ` Paolo Bonzini
2020-12-06 14:09             ` Kalra, Ashish
2020-12-04 18:06       ` Ashish Kalra
2020-12-04 18:41         ` Sean Christopherson
2020-12-04 18:48           ` Kalra, Ashish
2020-12-04 19:02           ` Tom Lendacky
2020-12-04 21:42     ` Ashish Kalra
2020-05-05 21:20 ` [PATCH v8 14/18] EFI: Introduce the new AMD Memory Encryption GUID Ashish Kalra
2020-05-30  2:07   ` Steve Rutherford
2020-05-30  5:51     ` Ashish Kalra
2020-05-05 21:20 ` [PATCH v8 15/18] KVM: x86: Add guest support for detecting and enabling SEV Live Migration feature Ashish Kalra
2020-05-30  2:08   ` Steve Rutherford
2020-05-05 21:20 ` [PATCH v8 16/18] KVM: x86: Mark _bss_decrypted section variables as decrypted in page encryption bitmap Ashish Kalra
2020-05-30  2:08   ` Steve Rutherford
2020-05-05 21:21 ` [PATCH v8 17/18] KVM: x86: Add kexec support for SEV Live Migration Ashish Kalra
2020-05-30  2:08   ` Steve Rutherford
2020-05-05 21:22 ` [PATCH v8 18/18] KVM: SVM: Enable SEV live migration feature implicitly on Incoming VM(s) Ashish Kalra
2020-05-30  2:09   ` Steve Rutherford [this message]
2020-12-04 11:11   ` Paolo Bonzini
2020-12-04 11:22   ` Paolo Bonzini
2020-12-04 21:46     ` Ashish Kalra
2020-12-06 10:18       ` Paolo Bonzini
2020-05-18 19:07 ` [PATCH v8 00/18] Add AMD SEV guest live migration support Ashish Kalra
2020-06-01 20:02   ` Steve Rutherford
2020-06-03 22:14     ` Ashish Kalra
2020-08-05 18:29       ` Steve Rutherford

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