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arm/arm64: KVM: Ensure memslots are within KVM_PHYS_SIZE
authorChristoffer Dall <christoffer.dall@linaro.org>
Fri, 10 Oct 2014 10:14:29 +0000 (12:14 +0200)
committerChristoffer Dall <christoffer.dall@linaro.org>
Tue, 14 Oct 2014 12:48:25 +0000 (05:48 -0700)
commitc3058d5da2222629bc2223c488a4512b59bb4baf
treec34f1e9fcf3909ddd493f644902b29ca18168236tree | snapshot (tar.gz zip)
parent38f791a4e499792eeb2a3c0572dd5133511c5bbbcommit | diff
arm/arm64: KVM: Ensure memslots are within KVM_PHYS_SIZE

When creating or moving a memslot, make sure the IPA space is within the
addressable range of the guest.  Otherwise, user space can create too
large a memslot and KVM would try to access potentially unallocated page
table entries when inserting entries in the Stage-2 page tables.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
arch/arm/kvm/mmu.c diff | blob | blame | history