KVM: s390: Fix dirty marking in adapter_indicators_set*()

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When the indicator and/or summary bits are set in the guest, the
accessed page was only marked dirty in KVM if the access was performed
using the slow path; accesses through the new kvm_arch_set_irq_inatomic
fast inject path would not mark the page as dirty.

Fix by adding/moving the missing calls to mark_page_dirty(). Note that
for the inatomic path set_page_dirty{,_lock}() is not needed as the
page stays pinned; the unpin path correctly marks it as dirty.

Opportunistically reorder the local variables to be in reverse
Christmas tree order and refactor to use guard().

Fixes: 1e95e3bc6b ("KVM: s390: Enable adapter_indicators_set to use mapped pages")
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Message-ID: <20260828115439.145885-2-imbrenda@linux.ibm.com>

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This commit is contained in:

Claudio Imbrenda 2026-08-28 13:54:32 +02:00

parent 786262be60

commit d215f014b3

1 changed files with 38 additions and 37 deletions

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arch/s390/kvm/s390/interrupt.c

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