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From: bugzilla-daemon@kernel.org
To: kvm@vger.kernel.org
Subject: [Bug 215964] nVMX: KVM(L0) does not perform a platform reboot when guest(L2) trigger a reboot event through IO-Port-0xCF9
Date: Wed, 11 May 2022 13:55:14 +0000	[thread overview]
Message-ID: <bug-215964-28872-43bkufWhqw@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-215964-28872@https.bugzilla.kernel.org/>

https://bugzilla.kernel.org/show_bug.cgi?id=215964

--- Comment #3 from Sean Christopherson (seanjc@google.com) ---
Hmm, QEMU is clearing clearing "guest mode" to get the vCPU back into L1 at
RESET, and IIRC QEMU will do KVM_SET_NESTED_STATE as part of its RESET
emulation.

My question about the 0xcf9 write still stands.  Does the OUT get sent to QEMU
and then something goes awry during RESET emulation?  Or is the OUT forwarded
to L1 as a nested VM-Exit?

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  parent reply	other threads:[~2022-05-11 13:55 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-10  2:45 [Bug 215964] New: nVMX: KVM(L0) does not perform a platform reboot when guest(L2) trigger a reboot event through IO-Port-0xCF9 bugzilla-daemon
2022-05-10 16:01 ` [Bug 215964] " bugzilla-daemon
2022-05-11  2:29 ` bugzilla-daemon
2022-05-11 13:55 ` bugzilla-daemon [this message]
2022-05-12  1:36 ` bugzilla-daemon
2022-05-12 14:06 ` bugzilla-daemon
2022-05-13  1:50 ` bugzilla-daemon
2023-01-26 10:03 ` bugzilla-daemon

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