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powerpc/64s: Enhance the information in cpu_show_spectre_v1()

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commit a377514519b9a20fa1ea9adddbb4129573129cef upstream.

We now have barrier_nospec as mitigation so print it in
cpu_show_spectre_v1() when enabled.

Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Michal Suchanek 2019-04-22 00:20:16 +10:00 committed by Greg Kroah-Hartman
parent 1110c3ad0b
commit b6a4dce40c
1 changed files with 3 additions and 0 deletions
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arch/powerpc/kernel/security.c
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@ -121,6 +121,9 @@ ssize_t cpu_show_spectre_v1(struct device *dev, struct device_attribute *attr, c
if (!security_ftr_enabled(SEC_FTR_BNDS_CHK_SPEC_BAR))
return sprintf(buf, "Not affected\n");
if (barrier_nospec_enabled)
return sprintf(buf, "Mitigation: __user pointer sanitization\n");
return sprintf(buf, "Vulnerable\n");
}