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linux/kernel
Chao Gao 1a27425523 swiotlb: avoid potential left shift overflow
[ Upstream commit 3f0461613e ]

The second operand passed to slot_addr() is declared as int or unsigned int
in all call sites. The left-shift to get the offset of a slot can overflow
if swiotlb size is larger than 4G.

Convert the macro to an inline function and declare the second argument as
phys_addr_t to avoid the potential overflow.

Fixes: 26a7e09478 ("swiotlb: refactor swiotlb_tbl_map_single")
Signed-off-by: Chao Gao <chao.gao@intel.com>
Reviewed-by: Dongli Zhang <dongli.zhang@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-09-15 11:32:06 +02:00
..
2021-04-14 08:41:58 +02:00
2020-08-12 10:58:02 -07:00
2020-11-14 11:26:04 -08:00