From: sashiko-bot@kernel.org
To: "Claudio Imbrenda" <imbrenda@linux.ibm.com>
Cc: "Christian Borntraeger" <borntraeger@linux.ibm.com>,
"Heiko Carstens" <hca@linux.ibm.com>,
linux-s390@vger.kernel.org, kvm@vger.kernel.org,
"Vasily Gorbik" <gor@linux.ibm.com>,
"Alexander Gordeev" <agordeev@linux.ibm.com>
Subject: Re: [PATCH v2 2/6] KVM: s390: Fix _gaccess_shadow_fault()
Date: Fri, 14 Aug 2026 16:59:48 +0000 [thread overview]
Message-ID: <20260814165948.893ED1F000E9@smtp.kernel.org> (raw)
In-Reply-To: <20260814163355.227191-3-imbrenda@linux.ibm.com>
> In some circumstances, it is possible that the page of nested guest
> memory that is being shadowed is not present at all in the parent guest
> gmap. dat_entry_walk() will not find any leaf entry and return with
> -ENOENT, which will erroneously be propagated all the way to userspace.
>
> Fix by manually calling gmap_link() on the memory of the nested guest
> that is being shadowed if the mapping was not already present.
>
> Fixes: e38c884df921 ("KVM: s390: Switch to new gmap")
> Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260814163355.227191-1-imbrenda@linux.ibm.com?part=2
next prev parent reply other threads:[~2026-08-14 16:59 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-14 16:33 [PATCH v2 0/6] KVM: s390: Even more misc fixes Claudio Imbrenda
2026-08-14 16:33 ` [PATCH v2 1/6] KVM: s390: Fix dirty marking in adapter_indicators_set*() Claudio Imbrenda
2026-08-14 16:42 ` sashiko-bot
2026-08-14 16:33 ` [PATCH v2 2/6] KVM: s390: Fix _gaccess_shadow_fault() Claudio Imbrenda
2026-08-14 16:59 ` sashiko-bot [this message]
2026-08-14 16:33 ` [PATCH v2 3/6] KVM: s390: Refactor dat_set_slot() Claudio Imbrenda
2026-08-14 16:46 ` sashiko-bot
2026-08-14 16:33 ` [PATCH v2 4/6] KVM: s390: Move all code into kvm_arch_prepare_memory_region() Claudio Imbrenda
2026-08-14 16:46 ` sashiko-bot
2026-08-14 16:33 ` [PATCH v2 5/6] KVM: s390: Add missing srcu in kvm_s390_set_irq_state() Claudio Imbrenda
2026-08-14 16:43 ` sashiko-bot
2026-08-14 16:33 ` [PATCH v2 6/6] KVM: s390: Fix potential races in dat skey functions Claudio Imbrenda
2026-08-14 16:46 ` sashiko-bot
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