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(parent: 3ddee7e) | patch
s390/mm: Warn if uv_convert_from_secure_pte() fails
authorClaudio Imbrenda <imbrenda@linux.ibm.com>
Wed, 4 Feb 2026 15:02:37 +0000 (16:02 +0100)
committerClaudio Imbrenda <imbrenda@linux.ibm.com>
Wed, 4 Feb 2026 16:00:08 +0000 (17:00 +0100)
commit850103b0ce6de85aec3a8722c2f48c20d822b10c
treee35dda2a26f06647f329090b0a671f48402ab7cftree
parent3ddee7e651661a2c3cbe12bb36215a64295f8b01commit | diff
s390/mm: Warn if uv_convert_from_secure_pte() fails

If uv_convert_from_secure_pte() fails, the page becomes unusable by the
host. The failure can only occour in case of hardware malfunction or a
serious KVM bug.

When the unusable page is reused, the system can have issues and
hang.

Print a warning to aid debugging such unlikely scenarios.

Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
arch/s390/include/asm/pgtable.h diff | blob | blame | history
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