AuxXxilium/linux_dsm_epyc7002
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249baa5479
linux_dsm_epyc7002/arch/powerpc
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Christoph Hellwig 249baa5479 dma-mapping: provide a better default ->get_required_mask 
Most dma_map_ops instances are IOMMUs that work perfectly fine in 32-bits
of IOVA space, and the generic direct mapping code already provides its
own routines that is intelligent based on the amount of memory actually
present.  Wire up the dma-direct routine for the ARM direct mapping code
as well, and otherwise default to the constant 32-bit mask.  This way
we only need to override it for the occasional odd IOMMU that requires
64-bit IOVA support, or IOMMU drivers that are more efficient if they
can fall back to the direct mapping.

Signed-off-by: Christoph Hellwig <hch@lst.de>
2019-09-04 11:13:19 +02:00
..
boot powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
configs powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
crypto treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
include KVM/arm fixes for 5.3 2019-08-09 16:53:39 +02:00
kernel dma-mapping: explicitly wire up ->mmap and ->get_sgtable 2019-09-04 11:13:18 +02:00
kvm Bugfixes (arm and x86) and cleanups. 2019-08-09 15:46:29 -07:00
lib powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
math-emu treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
mm powerpc/kasan: fix early boot failure on PPC32 2019-07-31 22:02:52 +10:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-17 20:20:36 -07:00
oprofile treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333 2019-06-05 17:37:06 +02:00
perf powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
platforms dma-mapping: provide a better default ->get_required_mask 2019-09-04 11:13:19 +02:00
purgatory treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
sysdev powerpc/xive: Fix loop exit-condition in xive_find_target_in_mask() 2019-07-18 23:47:16 +10:00
tools treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
xmon powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
Kbuild treewide: Add SPDX license identifier - Kbuild 2019-05-30 11:32:33 -07:00
Kconfig dma-mapping: fix page attributes for dma_mmap_* 2019-08-10 19:52:45 +02:00
Kconfig.debug powerpc/xmon: add read-only mode 2019-05-03 02:54:57 +10:00
Makefile treewide: prefix header search paths with $(srctree)/ 2019-05-18 11:49:57 +09:00
Makefile.postlink