linux-kernel - [PATCH] s390/kvm/vsie: Use virt_to

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Date: Mon, 29 Apr 2024 19:15:12 +0200
From: Nina Schoetterl-Glausch <nsg@...ux.ibm.com>
To: Christian Borntraeger <borntraeger@...ux.ibm.com>,
        Claudio Imbrenda <imbrenda@...ux.ibm.com>,
        Janosch Frank <frankja@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        Heiko Carstens <hca@...ux.ibm.com>
Cc: Nina Schoetterl-Glausch <nsg@...ux.ibm.com>,
        David Hildenbrand <david@...hat.com>, linux-s390@...r.kernel.org,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        Sven Schnelle <svens@...ux.ibm.com>
Subject: [PATCH] s390/kvm/vsie: Use virt_to_phys for crypto control block

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@...ux.ibm.com>
---
 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;
 }
 

base-commit: b947cc5bf6d793101135265352e205aeb30b54f0
-- 
2.40.1