From: "Edgecombe, Rick P" <rick.p.edgecombe@intel.com>
To: "tony.lindgren@linux.intel.com" <tony.lindgren@linux.intel.com>,
"seanjc@google.com" <seanjc@google.com>
Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"pbonzini@redhat.com" <pbonzini@redhat.com>,
"Kohler, Jon" <jon@nutanix.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/4] KVM: VMX: Handle #MCs on VM-Enter/TD-Enter outside of the fastpath
Date: Mon, 17 Nov 2025 16:30:38 +0000 [thread overview]
Message-ID: <a84c72849f021c4fec99caadd0a681146d8e5b6e.camel@intel.com> (raw)
In-Reply-To: <aRsXVvDHsdCjEgPM@tlindgre-MOBL1>
On Mon, 2025-11-17 at 14:38 +0200, Tony Lindgren wrote:
> I bisected kvm-x86/next down to this change for a TDX guest not
> booting and host producing errors like:
>
> watchdog: CPU118: Watchdog detected hard LOCKUP on cpu 118
>
> Dropping the is_td_vcpu(vcpu) check above fixes the issue. Earlier
> the call for vmx_handle_exit_irqoff() was unconditional.
>
> Probably the (u16) cast above can be dropped too? It was never used
> for TDX looking at the patch.
Ah! Thanks for picking this up. I had almost got there but lost my TDX
machine for a bit.
next prev parent reply other threads:[~2025-11-17 16:30 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-30 22:42 [PATCH 0/4] KVM: x86: Cleanup #MC and XCR0/XSS/PKRU handling Sean Christopherson
2025-10-30 22:42 ` [PATCH 1/4] KVM: SVM: Handle #MCs in guest outside of fastpath Sean Christopherson
2025-10-30 22:42 ` [PATCH 2/4] KVM: VMX: Handle #MCs on VM-Enter/TD-Enter outside of the fastpath Sean Christopherson
2025-11-17 12:38 ` Tony Lindgren
2025-11-17 15:47 ` Sean Christopherson
2025-11-18 5:33 ` Tony Lindgren
2025-11-17 16:30 ` Edgecombe, Rick P [this message]
2025-10-30 22:42 ` [PATCH 3/4] KVM: x86: Load guest/host XCR0 and XSS outside of the fastpath run loop Sean Christopherson
2025-11-05 10:42 ` Binbin Wu
2025-11-05 14:43 ` Sean Christopherson
2025-11-06 1:55 ` Binbin Wu
2025-10-30 22:42 ` [PATCH 4/4] KVM: x86: Load guest/host PKRU " Sean Christopherson
2025-10-31 17:58 ` Jon Kohler
2025-10-31 20:52 ` Sean Christopherson
2025-11-03 15:32 ` Jon Kohler
2025-10-31 17:58 ` [PATCH 0/4] KVM: x86: Cleanup #MC and XCR0/XSS/PKRU handling Jon Kohler
2025-10-31 23:35 ` Edgecombe, Rick P
2025-11-10 15:37 ` Sean Christopherson
2025-11-17 18:35 ` Sean Christopherson
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