gaoxu b7a34e30d4 dma-remap: use kvmalloc_array/kvfree for larger dma memory remap ... [ Upstream commit 51ff97d54f ] If dma_direct_alloc() alloc memory in size of 64MB, the inner function dma_common_contiguous_remap() will allocate 128KB memory by invoking the function kmalloc_array(). and the kmalloc_array seems to fail to try to allocate 128KB mem. Call trace: [14977.928623] qcrosvm: page allocation failure: order:5, mode:0x40cc0 [14977.928638] dump_backtrace.cfi_jt+0x0/0x8 [14977.928647] dump_stack_lvl+0x80/0xb8 [14977.928652] warn_alloc+0x164/0x200 [14977.928657] __alloc_pages_slowpath+0x9f0/0xb4c [14977.928660] __alloc_pages+0x21c/0x39c [14977.928662] kmalloc_order+0x48/0x108 [14977.928666] kmalloc_order_trace+0x34/0x154 [14977.928668] __kmalloc+0x548/0x7e4 [14977.928673] dma_direct_alloc+0x11c/0x4f8 [14977.928678] dma_alloc_attrs+0xf4/0x138 [14977.928680] gh_vm_ioctl_set_fw_name+0x3c4/0x610 [gunyah] [14977.928698] gh_vm_ioctl+0x90/0x14c [gunyah] [14977.928705] __arm64_sys_ioctl+0x184/0x210 work around by doing kvmalloc_array instead. Signed-off-by: Gao Xu <gaoxu2@hihonor.com> Reviewed-by: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-08-23 17:52:21 +02:00
..
Kconfig	…
Makefile	…
coherent.c	…
contiguous.c	…
debug.c	…
debug.h	…
direct.c	…
direct.h	…
dummy.c	…
map_benchmark.c	…
mapping.c	…
ops_helpers.c	…
pool.c	…
remap.c	dma-remap: use kvmalloc_array/kvfree for larger dma memory remap	2023-08-23 17:52:21 +02:00
swiotlb.c	swiotlb: mark swiotlb_memblock_alloc() as __init	2023-07-23 13:49:50 +02:00