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Stefano Stabellini da095a9960 xen/arm: introduce GNTTABOP_cache_flush 
Introduce support for new hypercall GNTTABOP_cache_flush.
Use it to perform cache flashing on pages used for dma when necessary.

If GNTTABOP_cache_flush is supported by the hypervisor, we don't need to
bounce dma map operations that involve foreign grants and non-coherent
devices.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
2014-12-04 12:41:54 +00:00
..
alpha Merge git://git.infradead.org/users/eparis/audit 2014-10-19 16:25:56 -07:00
arc The "weak" attribute is commonly used for the default version of a 2014-10-23 15:04:27 -07:00
arm xen/arm: introduce GNTTABOP_cache_flush 2014-12-04 12:41:54 +00:00
arm64 xen/arm/arm64: merge xen/mm32.c into xen/mm.c 2014-12-04 12:41:53 +00:00
avr32 Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 2014-10-18 18:11:04 -07:00
blackfin Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2014-10-15 07:48:18 +02:00
c6x
cris
frv frv: remove unused declarations of __start___ex_table and __stop___ex_table 2014-10-14 02:18:28 +02:00
hexagon
ia64 kvm: fix kvm_is_mmio_pfn() and rename to kvm_is_reserved_pfn() 2014-11-26 14:40:45 +01:00
m32r
m68k m68k: Wire up bpf 2014-10-27 11:02:19 +01:00
metag Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2014-10-15 07:48:18 +02:00
microblaze microblaze: Wire up bpf syscall 2014-10-27 09:25:34 +01:00
mips MIPS: tlbex: Fix potential HTW race on TLBL/M/S handlers 2014-11-27 17:21:56 +01:00
mn10300
openrisc Merge git://git.infradead.org/users/eparis/audit 2014-10-19 16:25:56 -07:00
parisc parisc: Avoid using CONFIG_64BIT in userspace exported headers 2014-11-10 22:25:29 +01:00
powerpc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux 2014-11-27 18:23:41 -08:00
s390 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2014-11-05 12:13:52 -08:00
score
sh sh: fix sh770x SCIF memory regions 2014-10-29 16:33:15 -07:00
sparc sparc: Add NOP dma_cache_sync() implementation. 2014-11-26 13:36:41 -08:00
tile Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2014-10-15 07:48:18 +02:00
um Merge git://git.infradead.org/users/eparis/audit 2014-10-19 16:25:56 -07:00
unicore32
x86 xen/arm/arm64: introduce xen_arch_need_swiotlb 2014-12-04 12:41:54 +00:00
xtensa Xtensa improvements for 3.18: 2014-10-23 10:30:33 -07:00
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