From: Claudio Imbrenda <imbrenda@linux.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: kvm@vger.kernel.org, linux-s390@vger.kernel.org,
borntraeger@de.ibm.com, frankja@linux.ibm.com, david@kernel.org,
seiden@linux.ibm.com, nrb@linux.ibm.com,
schlameuss@linux.ibm.com, gra@linux.ibm.com, hca@linux.ibm.com,
gerald.schaefer@linux.ibm.com, gor@linux.ibm.com,
agordeev@linux.ibm.com, svens@linux.ibm.com
Subject: [PATCH v6 04/10] KVM: s390: Fix code typo in gmap_protect_asce_top_level()
Date: Tue, 23 Jun 2026 17:33:25 +0200 [thread overview]
Message-ID: <20260623153331.233784-5-imbrenda@linux.ibm.com> (raw)
In-Reply-To: <20260623153331.233784-1-imbrenda@linux.ibm.com>
The correct length to pass to kvm_s390_get_guest_pages() is asce.tl + 1,
not asce.dt + 1. It was a typo, which, due to fortuitous circumstances,
did not cause bugs. It should nonetheless be fixed.
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Fixes: e5f98a6899bd ("KVM: s390: Add some helper functions needed for vSIE")
---
arch/s390/kvm/gmap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/s390/kvm/gmap.c b/arch/s390/kvm/gmap.c
index 3192f610f696..e6e786811db8 100644
--- a/arch/s390/kvm/gmap.c
+++ b/arch/s390/kvm/gmap.c
@@ -1262,7 +1262,7 @@ static int gmap_protect_asce_top_level(struct kvm_s390_mmu_cache *mc, struct gma
/* Pairs with the smp_wmb() in kvm_mmu_invalidate_end(). */
smp_rmb();
- rc = kvm_s390_get_guest_pages(sg->kvm, context.f, asce.rsto, asce.dt + 1, false);
+ rc = kvm_s390_get_guest_pages(sg->kvm, context.f, asce.rsto, asce.tl + 1, false);
if (rc > 0)
rc = -EFAULT;
if (!rc)
--
2.54.0
next prev parent reply other threads:[~2026-06-23 15:33 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-23 15:33 [PATCH v6 00/10] KVM: s390: A bunch of gmap-related fixes Claudio Imbrenda
2026-06-23 15:33 ` [PATCH v6 01/10] s390/mm: Fix handling of _PAGE_UNUSED pte bit Claudio Imbrenda
2026-06-23 15:33 ` [PATCH v6 02/10] KVM: s390: Fix dat_peek_cmma() overflow Claudio Imbrenda
2026-06-23 15:33 ` [PATCH v6 03/10] KVM: s390: Do not set special large pages dirty Claudio Imbrenda
2026-06-23 15:33 ` Claudio Imbrenda [this message]
2026-06-23 15:33 ` [PATCH v6 05/10] KVM: s390: Fix handle_{sske,pfmf} under memory pressure Claudio Imbrenda
2026-06-23 15:33 ` [PATCH v6 06/10] KVM: s390: Fix locking in kvm_s390_set_mem_control() Claudio Imbrenda
2026-06-23 15:33 ` [PATCH v6 07/10] KVM: s390: Fix cmma dirty tracking Claudio Imbrenda
2026-06-23 15:33 ` [PATCH v6 08/10] KVM: s390: selftests: Fix cmma selftest Claudio Imbrenda
2026-06-23 15:33 ` [PATCH v6 09/10] KVM: s390: Return failure in case of failure in kvm_s390_set_cmma_bits() Claudio Imbrenda
2026-06-23 15:33 ` [PATCH v6 10/10] KVM: s390: vsie: Avoid potential deadlock with real spaces Claudio Imbrenda
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