Re: [PATCH v4 16/21] KVM: arm64: Save/Restore guest DISR_EL1

Marc Zyngier
2017-10-31T04:26:22Z

On Thu, Oct 19 2017 at 4:58:02 pm BST, James Morse <james.morse@arm.com> wrote:
> If we deliver a virtual SError to the guest, the guest may defer it
> with an ESB instruction. The guest reads the deferred value via DISR_EL1,
> but the guests view of DISR_EL1 is re-mapped to VDISR_EL2 when HCR_EL2.AMO
> is set.
>
> Add the KVM code to save/restore VDISR_EL2, and make it accessible to
> userspace as DISR_EL1.
>
> Signed-off-by: James Morse <james.morse@arm.com>

Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>

M.
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