Re: [PATCH] s390/kvm/vsie: Use virt_to_phys for crypto control block

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Am 29.04.24 um 19:15 schrieb Nina Schoetterl-Glausch:
The address of the crypto control block in the (shadow) SIE block is
absolute/physical.
Convert from virtual to physical when shadowing the guest's control
block during VSIE.

Signed-off-by: Nina Schoetterl-Glausch <nsg@xxxxxxxxxxxxx>

vsie_page was created with page_to_virt to this make sense to translated back here.

Reviewed-by: Christian Borntraeger <borntraeger@xxxxxxxxxxxxx>

I guess this should go via the s390 with the other virt/phys changes.

---
  arch/s390/kvm/vsie.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c
index b2c9f010f0fe..24defeada00c 100644
--- a/arch/s390/kvm/vsie.c
+++ b/arch/s390/kvm/vsie.c
@@ -361,7 +361,7 @@ static int shadow_crycb(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
  	case -EACCES:
  		return set_validity_icpt(scb_s, 0x003CU);
  	}
-	scb_s->crycbd = ((__u32)(__u64) &vsie_page->crycb) | CRYCB_FORMAT2;
+	scb_s->crycbd = (u32)virt_to_phys(&vsie_page->crycb) | CRYCB_FORMAT2;
  	return 0;
  }




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