Re: [PATCH v6 19/64] KVM: arm64: nv: Trap SPSR_EL1, ELR_EL1 and VBAR_EL1 from virtual EL2

Russell King (Oracle)
2022-02-01T18:15:11Z

On Fri, Jan 28, 2022 at 12:18:27PM +0000, Marc Zyngier wrote:
> From: Jintack Lim <jintack.lim@linaro.org>
>
> For the same reason we trap virtual memory register accesses at virtual
> EL2, we need to trap SPSR_EL1, ELR_EL1 and VBAR_EL1 accesses. ARM v8.3
> introduces the HCR_EL2.NV1 bit to be able to trap on those register
> accesses in EL1. Do not set this bit until the whole nesting support is

Maybe:
, but will be done in a future patch once nested support
is complete.

> completed.
>
> Signed-off-by: Jintack Lim <jintack.lim@linaro.org>
> Signed-off-by: Marc Zyngier <maz@kernel.org>

Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>

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