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| author |   Christoffer Dall <christoffer.dall@linaro.org> | 2014-08-19 12:18:04 +0200 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2014-08-27 22:46:09 +0200 |
| commit | 98047888bb9fd57734028c44ec17413ddd623958 (patch) | |
| tree | 976048e835e2f88df23b73aad4e0591102ab8c6e /arch/arm64/include/uapi/asm | |
| parent | KVM: Introduce gfn_to_hva_memslot_prot (diff) | |
| download | linux-dev-98047888bb9fd57734028c44ec17413ddd623958.tar.xz linux-dev-98047888bb9fd57734028c44ec17413ddd623958.zip | |
arm/arm64: KVM: Support KVM_CAP_READONLY_MEM
When userspace loads code and data in a read-only memory regions, KVM
needs to be able to handle this on arm and arm64. Specifically this is
used when running code directly from a read-only flash device; the
common scenario is a UEFI blob loaded with the -bios option in QEMU.
Note that the MMIO exit on writes to a read-only memory is ABI and can
be used to emulate block-erase style flash devices.
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'arch/arm64/include/uapi/asm')
| -rw-r--r-- | arch/arm64/include/uapi/asm/kvm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/include/uapi/asm/kvm.h b/arch/arm64/include/uapi/asm/kvm.h index e633ff8cdec8..f4ec5a674d05 100644 --- a/arch/arm64/include/uapi/asm/kvm.h +++ b/arch/arm64/include/uapi/asm/kvm.h @@ -37,6 +37,7 @@ #define __KVM_HAVE_GUEST_DEBUG #define __KVM_HAVE_IRQ_LINE +#define __KVM_HAVE_READONLY_MEM #define KVM_REG_SIZE(id) \ (1U << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) |