drivers/virt: pkvm: Intercept ioremap using pKVM MMIO_GUARD hypercall

Hook up pKVM's MMIO_GUARD hypercall so that ioremap() and friends will
register the target physical address as MMIO with the hyp

drivers/virt: pkvm: Intercept ioremap using pKVM MMIO_GUARD hypercall

Hook up pKVM's MMIO_GUARD hypercall so that ioremap() and friends will
register the target physical address as MMIO with the hypervisor,
allowing guest exits to that page to be emulated by the host with full
syndrome information.

Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20240830130150.8568-7-will@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>

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drivers/virt: pkvm: Hook up mem_encrypt API using pKVM hypercalls

If we detect the presence of pKVM's SHARE and UNSHARE hypercalls, then
register a backend implementation of the mem_encrypt API so t

drivers/virt: pkvm: Hook up mem_encrypt API using pKVM hypercalls

If we detect the presence of pKVM's SHARE and UNSHARE hypercalls, then
register a backend implementation of the mem_encrypt API so that things
like DMA buffers can be shared appropriately with the host.

Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20240830130150.8568-5-will@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>

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drivers/virt: pkvm: Add initial support for running as a protected guest

Implement a pKVM protected guest driver to probe the presence of pKVM
and determine the memory protection granule using the H

drivers/virt: pkvm: Add initial support for running as a protected guest

Implement a pKVM protected guest driver to probe the presence of pKVM
and determine the memory protection granule using the HYP_MEMINFO
hypercall.

Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20240830130150.8568-3-will@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>

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