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| author | Paolo Bonzini <pbonzini@redhat.com> | 2020-09-22 06:43:17 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-09-22 06:43:17 -0400 |
| commit | bf3c0e5e7102f5787d693379d9d384b813fe890b (patch) | |
| tree | aa48fc57dee9ecdf99918affa38d1b06be41419a /kernel/dma/direct.c | |
| parent | 32251b07d532174d66941488c112ec046f646157 (diff) | |
| parent | 976bc5e2aceedef13e0ba1f0e6e372a22164aa0c (diff) | |
| download | kernel_replicant_linux-bf3c0e5e7102f5787d693379d9d384b813fe890b.tar.gz kernel_replicant_linux-bf3c0e5e7102f5787d693379d9d384b813fe890b.tar.bz2 kernel_replicant_linux-bf3c0e5e7102f5787d693379d9d384b813fe890b.zip | |
Merge branch 'x86-seves-for-paolo' of https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into HEAD
Diffstat (limited to 'kernel/dma/direct.c')
| -rw-r--r-- | kernel/dma/direct.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c index bb0041e99659..db6ef07aec3b 100644 --- a/kernel/dma/direct.c +++ b/kernel/dma/direct.c @@ -43,7 +43,7 @@ u64 dma_direct_get_required_mask(struct device *dev) return (1ULL << (fls64(max_dma) - 1)) * 2 - 1; } -gfp_t dma_direct_optimal_gfp_mask(struct device *dev, u64 dma_mask, +static gfp_t dma_direct_optimal_gfp_mask(struct device *dev, u64 dma_mask, u64 *phys_limit) { u64 dma_limit = min_not_zero(dma_mask, dev->bus_dma_limit); @@ -68,7 +68,7 @@ gfp_t dma_direct_optimal_gfp_mask(struct device *dev, u64 dma_mask, return 0; } -bool dma_coherent_ok(struct device *dev, phys_addr_t phys, size_t size) +static bool dma_coherent_ok(struct device *dev, phys_addr_t phys, size_t size) { return phys_to_dma_direct(dev, phys) + size - 1 <= min_not_zero(dev->coherent_dma_mask, dev->bus_dma_limit); @@ -161,8 +161,13 @@ void *dma_direct_alloc_pages(struct device *dev, size_t size, size = PAGE_ALIGN(size); if (dma_should_alloc_from_pool(dev, gfp, attrs)) { - ret = dma_alloc_from_pool(dev, size, &page, gfp); - if (!ret) + u64 phys_mask; + + gfp |= dma_direct_optimal_gfp_mask(dev, dev->coherent_dma_mask, + &phys_mask); + page = dma_alloc_from_pool(dev, size, &ret, gfp, + dma_coherent_ok); + if (!page) return NULL; goto done; } |