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powerpc/fsl: Fix spectre_v2 mitigations reporting

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commit 7d8bad99ba5a22892f0cad6881289fdc3875a930 upstream.

Currently for CONFIG_PPC_FSL_BOOK3E the spectre_v2 file is incorrect:

  $ cat /sys/devices/system/cpu/vulnerabilities/spectre_v2
  "Mitigation: Software count cache flush"

Which is wrong. Fix it to report vulnerable for now.

Fixes: ee13cb249fab ("powerpc/64s: Add support for software count cache flush")
Cc: stable@vger.kernel.org # v4.19+
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>
This commit is contained in:
Diana Craciun 2019-03-29 22:26:10 +11:00 • committed by Greg Kroah-Hartman
parent f7a1d9fabc
commit 191adcc50e
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/kernel/security.c
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@ -22,7 +22,7 @@ enum count_cache_flush_type {
COUNT_CACHE_FLUSH_SW = 0x2,
COUNT_CACHE_FLUSH_HW = 0x4,
};
static enum count_cache_flush_type count_cache_flush_type;
static enum count_cache_flush_type count_cache_flush_type = COUNT_CACHE_FLUSH_NONE;
bool barrier_nospec_enabled;
static bool no_nospec;