diff options
| author | Diana Craciun <diana.craciun@nxp.com> | 2019-04-11 21:46:27 +1000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-17 08:36:43 +0200 |
| commit | 0ac0d2b12434c7a0069f051f5000833ec2c88e90 (patch) | |
| tree | d8202a8dbad2bac8629d5156a1ed7a1111502519 /arch/powerpc | |
| parent | 487bea70ea9886d7860af15e8d413d8d5c9873e7 (diff) | |
powerpc/fsl: Update Spectre v2 reporting
commit dfa88658fb0583abb92e062c7a9cd5a5b94f2a46 upstream.
Report branch predictor state flush as a mitigation for
Spectre variant 2.
Signed-off-by: Diana Craciun <diana.craciun@nxp.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/kernel/security.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/security.c b/arch/powerpc/kernel/security.c index 6dc5cdc2b87c..43ce800e73bf 100644 --- a/arch/powerpc/kernel/security.c +++ b/arch/powerpc/kernel/security.c @@ -213,8 +213,11 @@ ssize_t cpu_show_spectre_v2(struct device *dev, struct device_attribute *attr, c if (count_cache_flush_type == COUNT_CACHE_FLUSH_HW) seq_buf_printf(&s, "(hardware accelerated)"); - } else + } else if (btb_flush_enabled) { + seq_buf_printf(&s, "Mitigation: Branch predictor state flush"); + } else { seq_buf_printf(&s, "Vulnerable"); + } seq_buf_printf(&s, "\n"); |