linux

Marc Zyngier ac4c8fcf5e arm/arm64: KVM: Enforce unconditional flush to PoC when mapping to stage-2 commit `8f36ebaf21` upstream. When we fault in a page, we flush it to the PoC (Point of Coherency) if the faulting vcpu has its own caches off, so that it can observe the page we just brought it. But if the vcpu has its caches on, we skip that step. Bad things happen when another vcpu tries to access that page with its own caches disabled. At that point, there is no garantee that the data has made it to the PoC, and we access stale data. The obvious fix is to always flush to PoC when a page is faulted in, no matter what the state of the vcpu is. Fixes: `2d58b733c8` ("arm64: KVM: force cache clean on page fault when caches are off") Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		History 2017-03-12 06:41:47 +01:00
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asm	arm/arm64: KVM: Enforce unconditional flush to PoC when mapping to stage-2	2017-03-12 06:41:47 +01:00
debug	ARM: brcmstb: Add earlyprintk support using run-time checks	2016-08-08 11:14:09 -07:00
uapi/asm	ARM: wire up new pkey syscalls	2016-10-19 10:18:47 +01:00