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linux/drivers/virt/coco/pkvm-guest
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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: 0f12694958 ("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
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