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Michael Ellerman 5bd4084f02 powerpc64s: Show ori31 availability in spectre_v1 sysfs file not v2

commit 6d44acae19 upstream.

When I added the spectre_v2 information in sysfs, I included the
availability of the ori31 speculation barrier.

Although the ori31 barrier can be used to mitigate v2, it's primarily
intended as a spectre v1 mitigation. Spectre v2 is mitigated by
hardware changes.

So rework the sysfs files to show the ori31 information in the
spectre_v1 file, rather than v2.

Currently we display eg:

  $ grep . spectre_v*
  spectre_v1:Mitigation: __user pointer sanitization
  spectre_v2:Mitigation: Indirect branch cache disabled, ori31 speculation barrier enabled

After:

  $ grep . spectre_v*
  spectre_v1:Mitigation: __user pointer sanitization, ori31 speculation barrier enabled
  spectre_v2:Mitigation: Indirect branch cache disabled

Fixes: d6fbe1c55c ("powerpc/64s: Wire up cpu_show_spectre_v2()")
Cc: stable@vger.kernel.org # v4.17+
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-08-24 13:04:49 +02:00

boot

powerpc/boot: Remove core support for Marvell mv64x60 hostbridges

2018-06-04 00:39:23 +10:00

configs

powerpc/embedded6xx: Remove C2K board support

2018-06-04 00:39:22 +10:00

crypto

…

include

powerpc/64s/radix: Fix missing global invalidations when removing copro

2018-08-01 23:23:41 +10:00