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| author |   Will Deacon <will.deacon@arm.com> | 2018-12-13 16:06:14 +0000 |
|---|---|---|
| committer |   Marc Zyngier <marc.zyngier@arm.com> | 2018-12-19 17:47:52 +0000 |
| commit | df655b75c43fba0f2621680ab261083297fd6d16 (patch) | |
| tree | cecc5ca40b3c50a183ec7994b869d882e99a65ec /virt | |
| parent | KVM: arm/arm64: Fix unintended stage 2 PMD mappings (diff) | |
| download | linux-dev-df655b75c43fba0f2621680ab261083297fd6d16.tar.xz linux-dev-df655b75c43fba0f2621680ab261083297fd6d16.zip | |
arm64: KVM: Avoid setting the upper 32 bits of VTCR_EL2 to 1
Although bit 31 of VTCR_EL2 is RES1, we inadvertently end up setting all
of the upper 32 bits to 1 as well because we define VTCR_EL2_RES1 as
signed, which is sign-extended when assigning to kvm->arch.vtcr.
Lucky for us, the architecture currently treats these upper bits as RES0
so, whilst we've been naughty, we haven't set fire to anything yet.
Cc: <stable@vger.kernel.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'virt')
0 files changed, 0 insertions, 0 deletions