Messages in this thread | | | Date | Mon, 6 Feb 2023 16:44:05 +0000 | From | Catalin Marinas <> | Subject | Re: [PATCH v4 07/21] arm64/sme: Enable host kernel to access ZT0 |
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On Mon, Feb 06, 2023 at 09:31:20AM +0000, Marc Zyngier wrote: > From a6c4aaccd33e453ffc8d8ea23a4dd4d9a263cc89 Mon Sep 17 00:00:00 2001 > From: Marc Zyngier <maz@kernel.org> > Date: Mon, 6 Feb 2023 09:24:40 +0000 > Subject: [PATCH] arm64/sme: Fix __finalise_el2 SMEver check > > When checking for ID_AA64SMFR0_EL1.SMEver, __check_override assumes > that the ID_AA64SMFR0_EL1 value is in x1, and the intent of the code > is to reuse value read a few lines above. > > However, as the comment says at the beginning of the macro, x1 will > be clobbered, and the checks always fails. > > The easiest fix is just to reload the id register before checking it. > > Fixes: f122576f3533 ("arm64/sme: Enable host kernel to access ZT0") > Signed-off-by: Marc Zyngier <maz@kernel.org>
Thanks Marc. I queued it on top of the for-next/sme2 branch.
-- Catalin
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