diff options
| author | Diana Craciun <diana.craciun@nxp.com> | 2019-04-22 00:20:35 +1000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-16 19:44:50 +0200 |
| commit | 5f9678d9c8c7c8d2234d32c2a744692bd541e49b (patch) | |
| tree | 0fe27431279585af3a1ef337017cb05a598fd504 /arch | |
| parent | 0454f7b3282bec5d72b6f5c916ac1fe31bd26c67 (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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
| -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 1fd1aabc1193..523466345d79 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"); |