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| author | Claudio Imbrenda <imbrenda@linux.ibm.com> | 2026-06-23 17:33:24 +0200 |
|---|---|---|
| committer | Claudio Imbrenda <imbrenda@linux.ibm.com> | 2026-06-24 10:08:56 +0200 |
| commit | e6c9b322c8cb3c08270f05e2faabd7c0cc82f809 (patch) | |
| tree | 32a1e0454e5c113f68d8923e03d96e5021a68c60 | |
| parent | 7a386efcb2bf986e0c9011e92a78aed0870b08cf (diff) | |
| download | lwn-e6c9b322c8cb3c08270f05e2faabd7c0cc82f809.tar.gz lwn-e6c9b322c8cb3c08270f05e2faabd7c0cc82f809.zip | |
KVM: s390: Do not set special large pages dirty
Special pages / folios should not be set dirty. This also applies to
large pages.
Add a missing check in gmap_clear_young_crste() to prevent setting the
large page dirty if it is a special page.
Fixes: a2c17f9270cc ("KVM: s390: New gmap code")
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Message-ID: <20260623153331.233784-4-imbrenda@linux.ibm.com>
| -rw-r--r-- | arch/s390/kvm/gmap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/kvm/gmap.c b/arch/s390/kvm/gmap.c index 52d55ddea8d4..3192f610f696 100644 --- a/arch/s390/kvm/gmap.c +++ b/arch/s390/kvm/gmap.c @@ -327,7 +327,7 @@ static long gmap_clear_young_crste(union crste *crstep, gfn_t gfn, gfn_t end, st new.h.i = 1; new.s.fc1.y = 0; new.s.fc1.prefix_notif = 0; - if (new.s.fc1.d || !new.h.p) + if ((new.s.fc1.d || !new.h.p) && !new.s.fc1.s) folio_set_dirty(phys_to_folio(crste_origin_large(crste))); new.s.fc1.d = 0; new.h.p = 1; |