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| author | Will Deacon <will.deacon@arm.com> | 2018-01-03 12:46:21 +0000 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2018-02-07 04:16:43 -0800 |
| commit | ac2491ab101ce4b5574809bebdba98a23b6c2ed6 (patch) | |
| tree | ebb16ec55271acce525d503948a41a200e10dad5 /lib/flex_array.c | |
| parent | a2c10034c924ace0dfec1edbf9f35c2edc926f66 (diff) | |
arm64: Implement branch predictor hardening for affected Cortex-A CPUs
Cortex-A57, A72, A73 and A75 are susceptible to branch predictor aliasing
and can theoretically be attacked by malicious code.
This patch implements a PSCI-based mitigation for these CPUs when available.
The call into firmware will invalidate the branch predictor state, preventing
any malicious entries from affecting other victim contexts.
Change-Id: I554536e8e5cb3839e102299da8f5b944415b1880
Co-developed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Git-commit: aa6acde65e03186b5add8151e1ffe36c3c62639b
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Signed-off-by: Srinivas Ramana <sramana@codeaurora.org>
Diffstat (limited to 'lib/flex_array.c')
0 files changed, 0 insertions, 0 deletions