Subject: Re: [PATCH v11 26/40] KVM: arm64: Hide SME system registers from guests

From: Catalin Marinas <[email-masked]>
Date: Wed, 23 Feb 2022 15:32:56 +0000

On Mon, Feb 07, 2022 at 03:20:55PM +0000, Mark Brown wrote:
> For the time being we do not support use of SME by KVM guests, support for
> this will be enabled in future. In order to prevent any side effects or
> side channels via the new system registers, including the EL0 read/write
> register TPIDR2, explicitly undefine all the system registers added by
> SME and mask out the SME bitfield in SYS_ID_AA64PFR1.
> 
> Signed-off-by: Mark Brown <[email-masked]>

Reviewed-by: Catalin Marinas <[email-masked]>

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