From: Marc Zyngier <maz@kernel.org>
To: Cristian Marussi <cristian.marussi@arm.com>
Cc: Oliver Upton <oliver.upton@linux.dev>,
Jeremy Linton <jeremy.linton@arm.com>,
linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev,
linux-kernel@vger.kernel.org, David Woodhouse <dwmw@amazon.co.uk>
Subject: Re: Circular lockdep in kvm_reset_vcpu() ?
Date: Tue, 14 Mar 2023 11:42:29 +0000 [thread overview]
Message-ID: <eaf66d70305bbaf96ae6d326dc30c2f1@kernel.org> (raw)
In-Reply-To: <ZBBUoBsfGokxiBzC@e120937-lin>
On 2023-03-14 11:04, Cristian Marussi wrote:
> On Tue, Mar 14, 2023 at 09:28:25AM +0000, Marc Zyngier wrote:
>> On 2023-03-13 18:20, Cristian Marussi wrote:
>> > On Mon, Mar 13, 2023 at 02:09:55PM +0000, Marc Zyngier wrote:
>>
>> > > And -rc2 works just fine here.
>> >
>> > Thanks, I'll dig deeper what's going on un my setup.
>>
>> Actually, you really want this patch[1] which is on its
>> way to Linus.
>>
>> It could explain the issue you're seeing with SMP.
>
> Hi Marc,
>
> thanks this just solves for me on JUNO with guest SMP.
>
> Indeed with earlycon on JUNO with SMP I was seeing, beside a lot of
> workqueue lockup that finally hanged the guest, some puzzling
> 'time-traveling' stamps that seemed to align more with the host time
> than the guest.
Yeah, my bad. Thankfully, Paolo just pulled the fix, and it should
make it into -rc3 (fingers crossed).
M.
--
Jazz is not dead. It just smells funny...
WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <maz@kernel.org>
To: Cristian Marussi <cristian.marussi@arm.com>
Cc: Oliver Upton <oliver.upton@linux.dev>,
Jeremy Linton <jeremy.linton@arm.com>,
linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev,
linux-kernel@vger.kernel.org, David Woodhouse <dwmw@amazon.co.uk>
Subject: Re: Circular lockdep in kvm_reset_vcpu() ?
Date: Tue, 14 Mar 2023 11:42:29 +0000 [thread overview]
Message-ID: <eaf66d70305bbaf96ae6d326dc30c2f1@kernel.org> (raw)
In-Reply-To: <ZBBUoBsfGokxiBzC@e120937-lin>
On 2023-03-14 11:04, Cristian Marussi wrote:
> On Tue, Mar 14, 2023 at 09:28:25AM +0000, Marc Zyngier wrote:
>> On 2023-03-13 18:20, Cristian Marussi wrote:
>> > On Mon, Mar 13, 2023 at 02:09:55PM +0000, Marc Zyngier wrote:
>>
>> > > And -rc2 works just fine here.
>> >
>> > Thanks, I'll dig deeper what's going on un my setup.
>>
>> Actually, you really want this patch[1] which is on its
>> way to Linus.
>>
>> It could explain the issue you're seeing with SMP.
>
> Hi Marc,
>
> thanks this just solves for me on JUNO with guest SMP.
>
> Indeed with earlycon on JUNO with SMP I was seeing, beside a lot of
> workqueue lockup that finally hanged the guest, some puzzling
> 'time-traveling' stamps that seemed to align more with the host time
> than the guest.
Yeah, my bad. Thankfully, Paolo just pulled the fix, and it should
make it into -rc3 (fingers crossed).
M.
--
Jazz is not dead. It just smells funny...
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next prev parent reply other threads:[~2023-03-14 11:42 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-10 17:46 Circular lockdep in kvm_reset_vcpu() ? Jeremy Linton
2023-02-10 17:46 ` Jeremy Linton
2023-02-11 0:56 ` Oliver Upton
2023-02-11 0:56 ` Oliver Upton
2023-03-13 10:09 ` Cristian Marussi
2023-03-13 10:09 ` Cristian Marussi
2023-03-13 14:09 ` Marc Zyngier
2023-03-13 14:09 ` Marc Zyngier
2023-03-13 18:20 ` Cristian Marussi
2023-03-13 18:20 ` Cristian Marussi
2023-03-14 9:28 ` Marc Zyngier
2023-03-14 11:04 ` Cristian Marussi
2023-03-14 11:04 ` Cristian Marussi
2023-03-14 11:42 ` Marc Zyngier [this message]
2023-03-14 11:42 ` Marc Zyngier
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