kvm.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Maxim Levitsky <mlevitsk@redhat.com>
To: kvm@vger.kernel.org
Cc: Wanpeng Li <wanpengli@tencent.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	linux-kernel@vger.kernel.org (open list:X86 ARCHITECTURE (32-BIT
	AND 64-BIT)), Jim Mattson <jmattson@google.com>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	"H. Peter Anvin" <hpa@zytor.com>, Borislav Petkov <bp@alien8.de>,
	Joerg Roedel <joro@8bytes.org>, Ingo Molnar <mingo@redhat.com>,
	x86@kernel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)),
	Sean Christopherson <seanjc@google.com>,
	Cathy Avery <cavery@redhat.com>,
	Maxim Levitsky <mlevitsk@redhat.com>
Subject: [PATCH 0/5] KVM: nSVM: few fixes for the nested migration
Date: Mon,  3 May 2021 15:54:41 +0300	[thread overview]
Message-ID: <20210503125446.1353307-1-mlevitsk@redhat.com> (raw)

Those are few fixes for issues I uncovered by doing variants of a\r
synthetic migration test I just created:\r
\r
I modified the qemu, such that on each vm pause/resume cycle,\r
just prior to resuming a vCPU, qemu reads its KVM state,\r
then (optionaly) resets this state by uploading a\r
dummy reset state to KVM, and then it uploads back to KVM,\r
the state that this vCPU had before.\r
\r
I'll try to make this test upstreamable soon, pending few details\r
I need to figure out.\r
\r
Last patch in this series is for false positive warning\r
that I have seen lately when setting the nested state,\r
in nested_svm_vmexit, where it expects the vmcb01 to have\r
VMRUN vmexit, which is not true after nested migration,\r
as it is not fully initialized.\r
If you prefer the warning can be removed instead.\r
\r
Best regards,\r
	Maxim Levitsky\r
\r
Maxim Levitsky (5):\r
  KVM: nSVM: fix a typo in svm_leave_nested\r
  KVM: nSVM: fix few bugs in the vmcb02 caching logic\r
  KVM: nSVM: leave the guest mode prior to loading a nested state\r
  KVM: nSVM: force L1's GIF to 1 when setting the nested state\r
  KVM: nSVM: set a dummy exit reason in L1 vmcb when loading the nested\r
    state\r
\r
 arch/x86/include/asm/kvm_host.h |  1 +\r
 arch/x86/kvm/svm/nested.c       | 29 ++++++++++++++++++++++++++---\r
 arch/x86/kvm/svm/svm.c          |  4 ++--\r
 3 files changed, 29 insertions(+), 5 deletions(-)\r
\r
-- \r
2.26.2\r
\r


             reply	other threads:[~2021-05-03 12:54 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-03 12:54 Maxim Levitsky [this message]
2021-05-03 12:54 ` [PATCH 1/5] KVM: nSVM: fix a typo in svm_leave_nested Maxim Levitsky
2021-05-03 12:54 ` [PATCH 2/5] KVM: nSVM: fix few bugs in the vmcb02 caching logic Maxim Levitsky
2021-05-03 12:54 ` [PATCH 3/5] KVM: nSVM: leave the guest mode prior to loading a nested state Maxim Levitsky
2021-05-03 12:54 ` [PATCH 4/5] KVM: nSVM: force L1's GIF to 1 when setting the " Maxim Levitsky
2021-05-03 14:00   ` Paolo Bonzini
2021-05-03 14:24     ` Maxim Levitsky
2021-05-03 12:54 ` [PATCH 5/5] KVM: nSVM: set a dummy exit reason in L1 vmcb when loading " Maxim Levitsky
2021-05-03 14:02   ` Paolo Bonzini
2021-05-03 14:26     ` Maxim Levitsky
2021-05-03 14:03 ` [PATCH 0/5] KVM: nSVM: few fixes for the nested migration Paolo Bonzini

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=20210503125446.1353307-1-mlevitsk@redhat.com \
    --to=mlevitsk@redhat.com \
    --cc=bp@alien8.de \
    --cc=cavery@redhat.com \
    --cc=hpa@zytor.com \
    --cc=jmattson@google.com \
    --cc=joro@8bytes.org \
    --cc=kvm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@redhat.com \
    --cc=pbonzini@redhat.com \
    --cc=seanjc@google.com \
    --cc=tglx@linutronix.de \
    --cc=vkuznets@redhat.com \
    --cc=wanpengli@tencent.com \
    --cc=x86@kernel.org \
    --subject='Re: [PATCH 0/5] KVM: nSVM: few fixes for the nested migration' \
    /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).