linux-kernel - Re: [PATCH] KVM: selftests: add test for SVE host corruption

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Message-ID: <aBFzXw-ASk1bXQvx@finisterre.sirena.org.uk>
Date: Wed, 30 Apr 2025 09:48:31 +0900
From: Mark Brown <broonie@...nel.org>
To: Mark Rutland <mark.rutland@....com>
Cc: Paolo Bonzini <pbonzini@...hat.com>, Shuah Khan <shuah@...nel.org>,
	Marc Zyngier <maz@...nel.org>,
	Oliver Upton <oliver.upton@...ux.dev>,
	Joey Gouly <joey.gouly@....com>,
	Suzuki K Poulose <suzuki.poulose@....com>,
	linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
	linux-kselftest@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev
Subject: Re: [PATCH] KVM: selftests: add test for SVE host corruption

On Tue, Apr 29, 2025 at 04:27:27PM +0100, Mark Rutland wrote:
> On Thu, Apr 17, 2025 at 12:32:49AM +0100, Mark Brown wrote:

> > Signed-off-by: Mark Brown <broonie@...nel.org>

> Looks like my Signed-off-by got dropped by accident; it should be above
> yours here.

> Aside from that, and the initial feature test, this looks pretty much
> identical to my original WIP.

Sorry, for a while I had a version of the program that was a lot more
modified (I was trying to make it work with a wider range of supervised
programs) so it didn't feel right to carry your SoB forward, but those
didn't actually go all the way to working enough to enable any of the
additional programs I was looking at so I ended up unwinding them and
didn't also unwind that change.

> I'm not sure if it's worth keeping all the printf() calls, which were
> only there to help me check the UDF trap was being handled correctly.

I've found them handy when using it.

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