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Commit 34fc0919 authored by Diana Craciun's avatar Diana Craciun Committed by Greg Kroah-Hartman
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powerpc/fsl: Fix spectre_v2 mitigations reporting 



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: ee13cb24 ("powerpc/64s: Add support for software count cache flush")
Cc: stable@vger.kernel.org # v4.19+
Signed-off-by: default avatarDiana Craciun <diana.craciun@nxp.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent eb734900

arch/powerpc/kernel/security.c

+1 −1
Original line number Diff line number Diff line
@@ -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;