From: Marc Zyngier <maz@kernel.org>
To: Jan Kotas <jank@cadence.com>
Cc: Oliver Upton <oliver.upton@linux.dev>,
"kvmarm@lists.linux.dev" <kvmarm@lists.linux.dev>
Subject: Re: HCR_EL2 GET_ONE_REG value difference
Date: Fri, 10 Oct 2025 14:12:30 +0100 [thread overview]
Message-ID: <86cy6uyk75.wl-maz@kernel.org> (raw)
In-Reply-To: <7867DE4D-41A2-4195-AF98-0055987D4D93@global.cadence.com>
On Fri, 10 Oct 2025 13:49:43 +0100,
Jan Kotas <jank@cadence.com> wrote:
>
> > On 10 Oct 2025, at 13:59, Marc Zyngier <maz@kernel.org> wrote:
> >
> > Given that, my take is that what we have today is not only correct,
> > but actually the desirable behaviour.
>
> From this point of view, I agree as well.
>
> And as you said, it allows us to compare what the HW actually does,
> and what the Guest may try to do. It could be a neat debug feature.
> Maybe it would be worth adding a note about sanitization to kernel docs?
We take patches! ;-)
> Thanks for taking the time to respond.
> It also helped me to rule out bugs in our VMM implementation.
Oh gawd... good luck with that! ;-)
M.
--
Without deviation from the norm, progress is not possible.
prev parent reply other threads:[~2025-10-10 13:12 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-10 8:30 HCR_EL2 GET_ONE_REG value difference Jan Kotas
2025-10-10 9:37 ` Marc Zyngier
2025-10-10 9:51 ` Jan Kotas
2025-10-10 10:31 ` Marc Zyngier
2025-10-10 10:59 ` Jan Kotas
2025-10-10 11:59 ` Marc Zyngier
2025-10-10 12:49 ` Jan Kotas
2025-10-10 13:12 ` Marc Zyngier [this message]
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