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由 Marc Zyngier 提交于
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: NMarc Zyngier <marc.zyngier@arm.com> Signed-off-by: NRussell King <rmk+kernel@armlinux.org.uk> Boot-tested-by: NTony Lindgren <tony@atomide.com> Reviewed-by: NTony Lindgren <tony@atomide.com>
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