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KVM: arm64: Make nVHE ASLR conditional on RANDOMIZE_BASE
authorDavid Brazdil <dbrazdil@google.com>
Tue, 21 Jul 2020 09:44:44 +0000 (10:44 +0100)
committerMarc Zyngier <maz@kernel.org>
Tue, 28 Jul 2020 09:41:11 +0000 (10:41 +0100)
commit24f69c0fa4e252f706884114b7d6353aa07678b5
tree721caeec3de6d526e61cdb89773048c00f939e9ctree | snapshot
parent3a949f4c93548751a377691b2a208063da05e369commit | diff
KVM: arm64: Make nVHE ASLR conditional on RANDOMIZE_BASE

If there are spare bits in non-VHE hyp VA, KVM unconditionally replaces them
with a random tag chosen at init. Disable this if the kernel is built without
RANDOMIZE_BASE to align with kernel behavior.

Signed-off-by: David Brazdil <dbrazdil@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200721094445.82184-2-dbrazdil@google.com
arch/arm64/kvm/va_layout.c diff | blob | history
Domain: System / Kernel;