linux/arch/arm64
Barry Song c6303ab9b9 arm64: mm: reserve per-numa CMA to localize coherent dma buffers
Right now, smmu is using dma_alloc_coherent() to get memory to save queues
and tables. Typically, on ARM64 server, there is a default CMA located at
node0, which could be far away from node2, node3 etc.
with this patch, smmu will get memory from local numa node to save command
queues and page tables. that means dma_unmap latency will be shrunk much.
Meanwhile, when iommu.passthrough is on, device drivers which call dma_
alloc_coherent() will also get local memory and avoid the travel between
numa nodes.

Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Barry Song <song.bao.hua@hisilicon.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2020-09-01 09:19:37 +02:00
..
boot arm64: dts: k3-am65: Update the RM resource types 2020-08-16 22:01:20 +01:00
configs ARM: SoC driver updates for v5.9 2020-08-03 19:30:59 -07:00
crypto crypto: arm64/gcm - use inline helper to suppress indirect calls 2020-07-09 22:14:32 +10:00
include A set of fixes for lockdep, tracing and RCU: 2020-08-30 11:43:50 -07:00
kernel A set of fixes for lockdep, tracing and RCU: 2020-08-30 11:43:50 -07:00
kvm - Fix kernel build with the integrated LLVM assembler which doesn't 2020-08-28 11:37:33 -07:00
lib Merge branch 'rwonce/rework' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux 2020-06-10 14:46:54 -07:00
mm arm64: mm: reserve per-numa CMA to localize coherent dma buffers 2020-09-01 09:19:37 +02:00
net bpf, arm64: Add BPF exception tables 2020-07-31 00:43:40 +02:00
xen arm64: xen: Use modern annotations for assembly functions 2020-01-09 16:09:42 +00:00
Kbuild
Kconfig KVM/arm64 updates for Linux 5.9: 2020-08-09 12:58:23 -04:00
Kconfig.debug arm64: remove TEXT_OFFSET randomization 2020-06-15 13:10:59 +01:00
Kconfig.platforms ARM: new SoC support for v5.9 2020-08-03 19:38:30 -07:00
Makefile arm64: vdso32: make vdso32 install conditional 2020-08-28 13:18:48 +01:00