From: Sean Christopherson <seanjc@google.com>
To: Kai Huang <kai.huang@intel.com>
Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"pbonzini@redhat.com" <pbonzini@redhat.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] KVM: x86: Ignore pending PV EOI if the vCPU has since disabled PV EOIs
Date: Mon, 29 Jun 2026 06:03:07 -0700 [thread overview]
Message-ID: <akJs_pOD_MVOxczP@google.com> (raw)
In-Reply-To: <3c0f96a316a968e5e0301f355bc05962c4b975ad.camel@intel.com>
On Mon, Jun 29, 2026, Kai Huang wrote:
> On Fri, 2026-06-26 at 10:44 -0700, Sean Christopherson wrote:
> > On Thu, Jun 25, 2026, Kai Huang wrote:
> > and because KVM needs to know precisely when the pending IRQ is unblocked,
> > i.e. can't lazily wait until the next VM-Exit.
>
> Thus KVM needs to make sure guest will actually write EOI to APIC (thus PV EOI
> must be disabled)?
Yep, KVM needs the guest to trigger a VM-Exit.
prev parent reply other threads:[~2026-06-29 13:03 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-24 22:05 [PATCH] KVM: x86: Ignore pending PV EOI if the vCPU has since disabled PV EOIs Sean Christopherson
2026-06-25 7:30 ` Huang, Kai
2026-06-25 15:33 ` Sean Christopherson
2026-06-25 23:44 ` Huang, Kai
2026-06-26 17:44 ` Sean Christopherson
2026-06-29 11:23 ` Huang, Kai
2026-06-29 12:51 ` Sean Christopherson
2026-06-29 13:03 ` Sean Christopherson [this message]
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