s390/mm: Warn if uv_convert_from_secure_pte() fails

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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>

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Claudio Imbrenda 2026-02-04 16:02:37 +01:00

parent 3ddee7e651

commit 850103b0ce

1 changed files with 5 additions and 4 deletions

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9

arch/s390/include/asm/pgtable.h

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