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363ef89f8e
linux/arch
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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
..
alpha arch: Cleanup read_barrier_depends() and comments 2014-12-11 21:15:05 -05:00
arc Minor updates for ARC for 3.19 2014-12-18 16:26:41 -08:00
arm arm/arm64: KVM: Invalidate data cache on unmap 2015-01-29 23:24:56 +01:00
arm64 arm/arm64: KVM: Invalidate data cache on unmap 2015-01-29 23:24:56 +01:00
avr32 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-12-11 14:27:06 -08:00
blackfin arch/blackfin/mach-bf533/boards/stamp.c: add linux/delay.h 2015-01-08 15:10:52 -08:00
c6x net, lib: kill arch_fast_hash library bits 2014-12-10 15:17:46 -05:00
cris CRISv32: Remove last remnants of ETRAX_SPI_MMC_BOARD 2014-12-20 00:06:13 +01:00
frv Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-12-11 14:27:06 -08:00
hexagon Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rkuo/linux-hexagon-kernel 2014-12-19 17:57:51 -08:00
ia64 Merge branches 'acpi-pm', 'acpi-processor' and 'acpi-video' 2015-01-06 23:35:43 +01:00
m32r Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-12-11 14:27:06 -08:00
m68k m68k: Wire up execveat 2015-01-11 11:14:14 +01:00
metag arch: Add lightweight memory barriers dma_rmb() and dma_wmb() 2014-12-11 21:15:06 -05:00
microblaze Microblaze patches for 3.19-rc1 2014-12-17 09:54:05 -08:00
mips kernel: Provide READ_ONCE and ASSIGN_ONCE 2014-12-20 16:48:59 -08:00
mn10300 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-12-11 14:27:06 -08:00
nios2 nios2: Use preempt_schedule_irq 2014-12-31 11:04:58 +08:00
openrisc net, lib: kill arch_fast_hash library bits 2014-12-10 15:17:46 -05:00
parisc Merge branch 'parisc-3.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux 2014-12-26 13:41:05 -08:00
powerpc powerpc: Work around gcc bug in current_thread_info() 2015-01-12 16:40:02 +11:00
s390 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2015-01-15 10:50:29 +13:00
score net, lib: kill arch_fast_hash library bits 2014-12-10 15:17:46 -05:00
sh PM: Eliminate CONFIG_PM_RUNTIME 2014-12-19 22:55:06 +01:00
sparc sparc32: destroy_context() and switch_mm() needs to disable interrupts. 2014-12-18 12:47:54 -05:00
tile Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile 2014-12-16 13:54:16 -08:00
um um: Skip futex_atomic_cmpxchg_inatomic() test 2015-01-04 14:20:26 +01:00
unicore32 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-12-11 14:27:06 -08:00
x86 KVM: x86: SYSENTER emulation is broken 2015-01-23 13:57:15 +01:00
xtensa Xtensa fixes for 3.19: 2014-12-16 14:08:53 -08:00
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