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| author | Christoph Hellwig <hch@lst.de> | 2022-05-11 08:13:57 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2022-05-13 12:49:18 +0200 |
| commit | a5e891321a219679d5a2828150a7dda29a47d8a6 (patch) | |
| tree | 0e002f243288f4fe04618ab50062f20e3b07ed72 /kernel/dma | |
| parent | 1521c607cabe7c7edb028e211e88ba1e0f19714e (diff) | |
| download | linux-a5e891321a219679d5a2828150a7dda29a47d8a6.tar.gz linux-a5e891321a219679d5a2828150a7dda29a47d8a6.tar.bz2 linux-a5e891321a219679d5a2828150a7dda29a47d8a6.zip | |
swiotlb: use the right nslabs value in swiotlb_init_remap
default_nslabs should only be used to initialize nslabs, after that we
need to use the local variable that can shrink when allocations or the
remap don't succeed.
Fixes: 6424e31b1c05 ("swiotlb: remove swiotlb_init_with_tbl and swiotlb_init_late_with_tbl")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Diffstat (limited to 'kernel/dma')
| -rw-r--r-- | kernel/dma/swiotlb.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index 3e992a308c8a..113e1e8aaca3 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -234,7 +234,7 @@ void __init swiotlb_init_remap(bool addressing_limit, unsigned int flags, { struct io_tlb_mem *mem = &io_tlb_default_mem; unsigned long nslabs = default_nslabs; - size_t alloc_size = PAGE_ALIGN(array_size(sizeof(*mem->slots), nslabs)); + size_t alloc_size; size_t bytes; void *tlb; @@ -249,7 +249,7 @@ void __init swiotlb_init_remap(bool addressing_limit, unsigned int flags, * memory encryption. */ retry: - bytes = PAGE_ALIGN(default_nslabs << IO_TLB_SHIFT); + bytes = PAGE_ALIGN(nslabs << IO_TLB_SHIFT); if (flags & SWIOTLB_ANY) tlb = memblock_alloc(bytes, PAGE_SIZE); else @@ -269,12 +269,13 @@ retry: goto retry; } + alloc_size = PAGE_ALIGN(array_size(sizeof(*mem->slots), nslabs)); mem->slots = memblock_alloc(alloc_size, PAGE_SIZE); if (!mem->slots) panic("%s: Failed to allocate %zu bytes align=0x%lx\n", __func__, alloc_size, PAGE_SIZE); - swiotlb_init_io_tlb_mem(mem, __pa(tlb), default_nslabs, false); + swiotlb_init_io_tlb_mem(mem, __pa(tlb), nslabs, false); mem->force_bounce = flags & SWIOTLB_FORCE; if (flags & SWIOTLB_VERBOSE) |