| commit | baaa7237fecc5ada99e518f38541126977ca7ff4 | [log] [tgz] |
|---|---|---|
| author | Mark Rutland <mark.rutland@arm.com> | Wed Jul 11 14:56:48 2018 +0100 |
| committer | Will Deacon <will.deacon@arm.com> | Thu Jul 12 14:49:47 2018 +0100 |
| tree | 3816c163ef9d02a4bd72a1ed83bb38932a7c36b1 | |
| parent | 99ed3ed08d629eb0db6866d266e2bbe35efa5f9d [diff] |
arm64: zero GPRs upon entry from EL0 We can zero GPRs x0 - x29 upon entry from EL0 to make it harder for userspace to control values consumed by speculative gadgets. We don't blat x30, since this is stashed much later, and we'll blat it before invoking C code. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>