From: Sean Christopherson <seanjc@google.com>
To: "Maciej S. Szmigiero" <mail@maciej.szmigiero.name>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/8] KVM: nSVM: Sync next_rip field from vmcb12 to vmcb02
Date: Mon, 4 Apr 2022 17:21:38 +0000 [thread overview]
Message-ID: <YkspIjFMwpMYWV05@google.com> (raw)
In-Reply-To: <112c2108-7548-f5bd-493d-19b944701f1b@maciej.szmigiero.name>
On Mon, Apr 04, 2022, Maciej S. Szmigiero wrote:
> > @@ -1606,7 +1622,7 @@ static int svm_set_nested_state(struct kvm_vcpu *vcpu,
> > nested_copy_vmcb_control_to_cache(svm, ctl);
> > svm_switch_vmcb(svm, &svm->nested.vmcb02);
> > - nested_vmcb02_prepare_control(svm);
> > + nested_vmcb02_prepare_control(svm, save->rip);
>
> ^
> I guess this should be "svm->vmcb->save.rip", since
> KVM_{GET,SET}_NESTED_STATE "save" field contains vmcb01 data,
> not vmcb{0,1}2 (in contrast to the "control" field).
Argh, yes. Is userspace required to set L2 guest state prior to KVM_SET_NESTED_STATE?
If not, this will result in garbage being loaded into vmcb02.
next prev parent reply other threads:[~2022-04-04 21:50 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-02 1:08 [PATCH 0/8] KVM: SVM: Fix soft int/ex re-injection Sean Christopherson
2022-04-02 1:08 ` [PATCH 1/8] KVM: nSVM: Sync next_rip field from vmcb12 to vmcb02 Sean Christopherson
2022-04-04 9:54 ` Maxim Levitsky
2022-04-04 16:50 ` Maciej S. Szmigiero
2022-04-04 17:21 ` Sean Christopherson [this message]
2022-04-04 17:45 ` Maciej S. Szmigiero
2022-04-20 15:00 ` Paolo Bonzini
2022-04-20 15:05 ` Maciej S. Szmigiero
2022-04-20 16:15 ` Sean Christopherson
2022-04-20 16:33 ` Paolo Bonzini
2022-04-20 16:44 ` Sean Christopherson
2022-04-02 1:08 ` [PATCH 2/8] KVM: SVM: Downgrade BUG_ON() to WARN_ON() in svm_inject_irq() Sean Christopherson
2022-04-02 1:08 ` [PATCH 3/8] KVM: SVM: Unwind "speculative" RIP advancement if INTn injection "fails" Sean Christopherson
2022-04-04 10:03 ` Maxim Levitsky
2022-04-20 15:01 ` Paolo Bonzini
2022-04-02 1:08 ` [PATCH 4/8] KVM: SVM: Stuff next_rip on emualted INT3 injection if NRIPS is supported Sean Christopherson
2022-04-04 12:00 ` Maxim Levitsky
2022-04-02 1:09 ` [PATCH 5/8] KVM: SVM: Re-inject INT3/INTO instead of retrying the instruction Sean Christopherson
2022-04-04 12:12 ` Maxim Levitsky
2022-04-04 16:49 ` Sean Christopherson
2022-04-04 16:53 ` Maciej S. Szmigiero
2022-04-04 19:33 ` Sean Christopherson
2022-04-04 19:50 ` Maciej S. Szmigiero
2022-04-04 19:54 ` Sean Christopherson
2022-04-04 20:46 ` Maciej S. Szmigiero
2022-04-04 20:44 ` Maciej S. Szmigiero
2022-04-06 1:48 ` Sean Christopherson
2022-04-06 13:13 ` Maciej S. Szmigiero
2022-04-06 17:10 ` Sean Christopherson
2022-04-06 19:08 ` Maciej S. Szmigiero
2022-04-06 19:48 ` Sean Christopherson
2022-04-06 20:30 ` Maciej S. Szmigiero
2022-04-06 20:52 ` Sean Christopherson
2022-04-06 22:34 ` Maciej S. Szmigiero
2022-04-06 23:03 ` Sean Christopherson
2022-04-07 15:32 ` Maciej S. Szmigiero
2022-04-02 1:09 ` [PATCH 6/8] KVM: SVM: Re-inject INTn instead of retrying the insn on "failure" Sean Christopherson
2022-04-04 17:14 ` Sean Christopherson
2022-04-04 20:27 ` Maciej S. Szmigiero
2022-04-02 1:09 ` [PATCH 7/8] KVM: x86: Trace re-injected exceptions Sean Christopherson
2022-04-04 12:14 ` Maxim Levitsky
2022-04-04 16:14 ` Sean Christopherson
2022-04-02 1:09 ` [PATCH 8/8] KVM: selftests: nSVM: Add svm_nested_soft_inject_test Sean Christopherson
2022-04-04 12:27 ` Maxim Levitsky
2022-04-04 16:59 ` Maciej S. Szmigiero
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=YkspIjFMwpMYWV05@google.com \
--to=seanjc@google.com \
--cc=jmattson@google.com \
--cc=joro@8bytes.org \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mail@maciej.szmigiero.name \
--cc=pbonzini@redhat.com \
--cc=vkuznets@redhat.com \
--cc=wanpengli@tencent.com \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.