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authorMarc Zyngier <marc.zyngier@arm.com>2018-02-01 11:07:35 +0000
committerRussell King <rmk+kernel@armlinux.org.uk>2018-05-31 11:09:03 +0100
commit3f7e8e2e1ebda787f156ce46e3f0a9ce2833fa4f (patch)
treecb2e36e2ad4908ce0b3daf776c8857a729a0fc31 /arch/powerpc/sysdev/fsl_rio.c
parentc44f366ea7c85e1be27d08f2f0880f4120698125 (diff)
ARM: KVM: invalidate BTB on guest exit for Cortex-A12/A17
In order to avoid aliasing attacks against the branch predictor, let's invalidate the BTB on guest exit. This is made complicated by the fact that we cannot take a branch before invalidating the BTB. We only apply this to A12 and A17, which are the only two ARM cores on which this useful. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Boot-tested-by: Tony Lindgren <tony@atomide.com> Reviewed-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/powerpc/sysdev/fsl_rio.c')
0 files changed, 0 insertions, 0 deletions