[PATCH v10 19/30] KVM: arm64: Provide assembly for SME register access

Mark Brown broonie at kernel.org
Thu May 21 08:17:07 PDT 2026


On Thu, May 21, 2026 at 03:51:26PM +0100, Mark Rutland wrote:

> While this specific instance is simple enough, I don't think we should
> continue to duplicate the low level save/restore routines between the
> main kernel and KVM hyp code.

> I've sent a series that avoids the need for this, and cleans up some
> other bits):

>   https://lore.kernel.org/linux-arm-kernel/20260521132556.584676-1-mark.rutland@arm.com/

> Assuming Marc and Oliver are on board, I'd prefer that we do that
> cleanup first, and build the KVM SME support atop.

Yeah, I've got a laundry list of things that I want to improve with both
the main kernel and KVM but the latency on getting anything reviewed
with both sides and sometimes obscure implementation decisions means
I've been waiting until this is landed first.
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