linux-stable/arch/arm64
Marc Zyngier 363ef89f8e arm/arm64: KVM: Invalidate data cache on unmap
Let's assume a guest has created an uncached mapping, and written
to that page. Let's also assume that the host uses a cache-coherent
IO subsystem. Let's finally assume that the host is under memory
pressure and starts to swap things out.

Before this "uncached" page is evicted, we need to make sure
we invalidate potential speculated, clean cache lines that are
sitting there, or the IO subsystem is going to swap out the
cached view, loosing the data that has been written directly
into memory.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2015-01-29 23:24:56 +01:00
..
boot ARM64: SoC changes for 3.19 2014-12-09 17:17:47 -08:00
configs arm64: defconfig: defconfig update for 3.19 2014-12-23 16:39:17 +00:00
crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2014-12-13 13:33:26 -08:00
include arm/arm64: KVM: Invalidate data cache on unmap 2015-01-29 23:24:56 +01:00
kernel Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-01-11 11:47:45 -08:00
kvm arm/arm64: KVM: Use set/way op trapping to track the state of the caches 2015-01-29 23:24:56 +01:00
lib arm64: __clear_user: handle exceptions on strb 2014-11-13 15:21:26 +00:00
mm arm64: partially revert "ARM: 8167/1: extend the reserved memory for initrd to be page aligned" 2015-01-16 13:57:33 +00:00
net arm64: bpf: lift restriction on last instruction 2014-12-03 18:04:09 +00:00
xen arm: xen: implement multicall hypercall support. 2014-04-24 13:09:46 +01:00
Kconfig Merge branch 'irq-irqdomain-arm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-12-15 17:30:09 -08:00
Kconfig.debug arm64: add support to dump the kernel page tables 2014-11-26 17:19:18 +00:00
Makefile dts, arm/arm64: Remove dtbs build rules in sub-makes 2014-10-21 18:06:58 +02:00