| From | Steven Price <> | Subject | [RFC PATCH 12/14] efi: arm64: Map Device with Prot Shared | Date | Fri, 27 Jan 2023 11:27:56 +0000 |
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From: Suzuki K Poulose <suzuki.poulose@arm.com>
Device mappings need to be emualted by the VMM so must be mapped shared with the host.
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Steven Price <steven.price@arm.com> --- arch/arm64/kernel/efi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c index fab05de2e12d..03a876707fc5 100644 --- a/arch/arm64/kernel/efi.c +++ b/arch/arm64/kernel/efi.c @@ -31,7 +31,7 @@ static __init pteval_t create_mapping_protection(efi_memory_desc_t *md) u32 type = md->type; if (type == EFI_MEMORY_MAPPED_IO) - return PROT_DEVICE_nGnRE; + return PROT_NS_SHARED | PROT_DEVICE_nGnRE; if (region_is_misaligned(md)) { static bool __initdata code_is_misaligned; -- 2.34.1
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