https://github.com/torvalds/linux
With commit 3690951fc6d4 (arm64: Use swiotlb late initialisation), the swiotlb buffer size is limited to MAX_ORDER_NR_PAGES. However, there are platforms with 32-bit only devices that require bounce buffering via swiotlb. This patch changes the swiotlb initialisation to an early 64MB memblock allocation. In order to get the swiotlb buffer correctly allocated (via memblock_virt_alloc_low_nopanic), this patch also defines ARCH_LOW_ADDRESS_LIMIT to the maximum physical address capable of 32-bit DMA. Reported-by: Kefeng Wang <wangkefeng.wang@huawei.com> Tested-by: Kefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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arm64: Increase the swiotlb buffer size 64MB
File | Mode | Size |
---|---|---|
Documentation | ||
arch | ||
block | ||
crypto | ||
drivers | ||
firmware | ||
fs | ||
include | ||
init | ||
ipc | ||
kernel | ||
lib | ||
mm | ||
net | ||
samples | ||
scripts | ||
security | ||
sound | ||
tools | ||
usr | ||
virt | ||
.gitignore | -rw-r--r-- | 1.2 KB |
.mailmap | -rw-r--r-- | 4.9 KB |
COPYING | -rw-r--r-- | 18.3 KB |
CREDITS | -rw-r--r-- | 94.0 KB |
Kbuild | -rw-r--r-- | 2.1 KB |
Kconfig | -rw-r--r-- | 252 bytes |
MAINTAINERS | -rw-r--r-- | 298.0 KB |
Makefile | -rw-r--r-- | 53.3 KB |
README | -rw-r--r-- | 18.3 KB |
REPORTING-BUGS | -rw-r--r-- | 7.3 KB |
Computing file changes ...