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

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 broonie@kernel.org

Reviewed-by: Catalin Marinas catalin.marinas@arm.com