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| author |  Diana Craciun <diana.craciun@nxp.com>
| 2018-12-12 16:03:09 +0200 |
|---|---|---|
| committer |  Michael Ellerman <mpe@ellerman.id.au>
| 2018-12-20 22:59:03 +1100 |
| commit | dfa88658fb0583abb92e062c7a9cd5a5b94f2a46 (patch) | |
| tree | 04fdb2c08d9067be87ac9936a71db306baff6b29 /arch/powerpc/kernel/security.c | |
| parent | powerpc/fsl: Enable runtime patching if nospectre_v2 boot arg is used (diff) | |
| download | linux-dfa88658fb0583abb92e062c7a9cd5a5b94f2a46.tar.gz linux-dfa88658fb0583abb92e062c7a9cd5a5b94f2a46.tar.bz2 linux-dfa88658fb0583abb92e062c7a9cd5a5b94f2a46.zip | |
powerpc/fsl: Update Spectre v2 reporting
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>
Diffstat (limited to 'arch/powerpc/kernel/security.c')
| -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 9ab771b1aebb..9b8631533e02 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"); |