From: Marc Zyngier <maz@kernel.org>
To: Richard Henderson <richard.henderson@linaro.org>
Cc: Peter Maydell <peter.maydell@linaro.org>,
Andrew Jones <drjones@redhat.com>,
kvm@vger.kernel.org, qemu-devel@nongnu.org,
Eric Auger <eric.auger@redhat.com>,
kernel-team@android.com, kvmarm@lists.cs.columbia.edu
Subject: Re: [PATCH v2] hw/arm/virt: KVM: Enable PAuth when supported by the host
Date: Thu, 06 Jan 2022 19:25:42 +0000 [thread overview]
Message-ID: <874k6gzmx5.wl-maz@kernel.org> (raw)
In-Reply-To: <364fc879-4b13-cf37-53e0-628a843c7bfa@linaro.org>
On Thu, 06 Jan 2022 18:26:29 +0000,
Richard Henderson <richard.henderson@linaro.org> wrote:
>
> Mm. It does beg the question of why KVM exposes multiple bits. If
> they must be tied, then it only serves to make the interface more
> complicated than necessary. We would be better served to have a
> single bit to control all of PAuth.
In hindsight, there is a lot I would change in the KVM userspace ABI,
and a lot I should have pushed back on. Unfortunately, there is little
we can do now to fix it (userspace expecting this behaviour has been
in the wild for almost 3 years already).
M.
--
Without deviation from the norm, progress is not possible.
prev parent reply other threads:[~2022-01-06 19:28 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-03 18:05 [PATCH v2] hw/arm/virt: KVM: Enable PAuth when supported by the host Marc Zyngier
2022-01-05 14:58 ` Andrew Jones
2022-01-05 21:36 ` Richard Henderson
2022-01-06 9:16 ` Marc Zyngier
2022-01-06 17:20 ` Richard Henderson
2022-01-06 17:29 ` Marc Zyngier
2022-01-06 18:26 ` Richard Henderson
2022-01-06 19:25 ` Marc Zyngier [this message]
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