Will Deacon d44679fb95 drivers/virt: pkvm: Don't fail ioremap() call if MMIO_GUARD fails ...

Calling the MMIO_GUARD hypercall from guests which have not been
enrolled (e.g. because they are running without pvmfw) results in
-EINVAL being returned. In this case, MMIO_GUARD is not active
and so we can simply proceed with the normal ioremap() routine.

Don't fail ioremap() if MMIO_GUARD fails; instead WARN_ON_ONCE()
to highlight that the pvm environment is slightly wonky.

Fixes: 0f1269495800 ("drivers/virt: pkvm: Intercept ioremap using pKVM MMIO_GUARD hypercall")
Signed-off-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20241202145731.6422-2-will@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

2024-12-03 18:10:20 +00:00

..

arm-pkvm-guest.c

drivers/virt: pkvm: Don't fail ioremap() call if MMIO_GUARD fails

2024-12-03 18:10:20 +00:00

Kconfig

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Makefile

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