| commit | d623d31d390fc1d2a351b81e0d1e58e715fd05d8 | [log] [tgz] |
|---|---|---|
| author | David Brazdil <dbrazdil@google.com> | Thu Dec 19 16:04:06 2019 +0000 |
| committer | David Brazdil <dbrazdil@google.com> | Fri Dec 20 09:53:10 2019 +0000 |
| tree | b5492d96321c40a9dd066646d09e26ffd9a945ef | |
| parent | 768f69c3720c9de7bd66a8debc76628bd63d1ae9 [diff] |
Emit speculation barriers after ERETs According to Linux commit 679db70801da9fda91d26caf13bf5b5ccc74e8e8 some ARM64 CPUs may speculate past an ERET. This could be used as part of a side-channel attack. To mitigate the issue, emit DSB/ISB barriers after every ERET. Add a build step which dumps the generated ELF and check that this holds for every ERET in the binary to prevent regressing. Bug: 146490856 Change-Id: Idf1c2690637a7edb4a366d30fec26ed444069f5e
Hafnium is a hypervisor, initially supporting aarch64 (64-bit Armv8 CPUs).
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