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powerpc/fsl: Update Spectre v2 reporting

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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>
This commit is contained in:
Diana Craciun 2018-12-12 16:03:09 +02:00 committed by Michael Ellerman
parent 3bc8ea8603
commit dfa88658fb
1 changed files with 4 additions and 1 deletions
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5
arch/powerpc/kernel/security.c
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@ -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");