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| author | Will Deacon <will@kernel.org> | 2020-09-16 01:56:12 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-09-29 18:08:16 +0300 |
| commit | 532d581583f25d4c297c721700f74b913f8cf37b (patch) | |
| tree | ef2dba6c2adf928e5dc46159d0daa68662e4d47e /drivers/fpga/zynq-fpga.c | |
| parent | a8de949893880a26458de03f5bc70075aba13d95 (diff) | |
| download | linux-532d581583f25d4c297c721700f74b913f8cf37b.tar.xz | |
arm64: Treat SSBS as a non-strict system feature
If all CPUs discovered during boot have SSBS, then spectre-v4 will be
considered to be "mitigated". However, we still allow late CPUs without
SSBS to be onlined, albeit with a "SANITY CHECK" warning. This is
problematic for userspace because it means that the system can quietly
transition to "Vulnerable" at runtime.
Avoid this by treating SSBS as a non-strict system feature: if all of
the CPUs discovered during boot have SSBS, then late arriving secondaries
better have it as well.
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/fpga/zynq-fpga.c')
0 files changed, 0 insertions, 0 deletions