KVM: s390: vsie: Use virt_to_phys for crypto control block

Nina Schoetterl-Glausch · Alexander Gordeev · commit cc4edb92f55a · 2024-05-01T11:48:21.000+02:00
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@linux.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com> Acked-by: Alexander Gordeev <agordeev@linux.ibm.com> Link: https://lore.kernel.org/r/20240429171512.879215-1-nsg@linux.ibm.com Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c
@@ -362,7 +362,7 @@ 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;
 }
 

Original file line number	Diff line number	Diff line change
`@@ -362,7 +362,7 @@ static int shadow_crycb(struct kvm_vcpu vcpu, struct vsie_page vsie_page)`
`362`	`362`	`case -EACCES:`
`363`	`363`	`return set_validity_icpt(scb_s, 0x003CU);`
`364`	`364`	`}`
`365`		`- scb_s->crycbd = ((__u32)(__u64) &vsie_page->crycb) \| CRYCB_FORMAT2;`
	`365`	`+ scb_s->crycbd = (u32)virt_to_phys(&vsie_page->crycb) \| CRYCB_FORMAT2;`
`366`	`366`	`return 0;`
`367`	`367`	`}`
`368`	`368`