3 Commits

Author	SHA1	Message	Date
Will Deacon	0f12694958	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>	2024-08-30 16:30:41 +01:00
Will Deacon	ebc59b120c	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>	2024-08-30 16:30:41 +01:00
Will Deacon	a06c3fad49	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>	2024-08-30 16:30:41 +01:00