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SubjectRe: [PATCH v3 1/3] KVM: s390: vsie: copy wrapping keys to right place
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On 08/23/2018 12:25 PM, Pierre Morel wrote:
> Copy the key mask to the right offset inside the shadow CRYCB
>
> Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
> Reviewed-by: David Hildenbrand <david@redhat.com>
> Reviewed-by: Cornelia Huck <cohuck@redhat.com>
> Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
> ---
> arch/s390/kvm/vsie.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c
> index 9175518..12b9707 100644
> --- a/arch/s390/kvm/vsie.c
> +++ b/arch/s390/kvm/vsie.c
> @@ -173,7 +173,8 @@ static int shadow_crycb(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
> return set_validity_icpt(scb_s, 0x0039U);
>
> /* copy only the wrapping keys */
> - if (read_guest_real(vcpu, crycb_addr + 72, &vsie_page->crycb, 56))
> + if (read_guest_real(vcpu, crycb_addr + 72,
> + vsie_page->crycb.dea_wrapping_key_mask, 56))

When we fix that code.., dont we have to XOR the guest3 wrapping keys with
the guest2 ones?


> return set_validity_icpt(scb_s, 0x0035U);
>
> scb_s->ecb3 |= ecb3_flags;
>

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