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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-07 23:56:23 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-07 23:56:23 +0300 |
| commit | 1d8b0e79083d229829a408cd016dc4a038f637dd (patch) | |
| tree | 120e466200b31570e59357c0da9ebc1eb938fc5f | |
| parent | 2626820d838f9e98f323bf47b4fb7722d1c52e53 (diff) | |
| parent | 164afb1d85b872907cfac048b46c094db596d529 (diff) | |
| download | linux-1d8b0e79083d229829a408cd016dc4a038f637dd.tar.xz | |
Merge tag 'iommu-fixes-v4.4-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU fixes from Joerg Roedel:
- Two build issues, one in the ipmmu-vmsa driver and one for the new
generic dma-api implemention used on arm64
- A performance fix for said dma-api implemention
- An issue caused by a wrong offset in map_sg in the same code as above
* tag 'iommu-fixes-v4.4-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/dma: Use correct offset in map_sg
iommu/ipmmu-vmsa: Don't truncate ttbr if LPAE is not enabled
iommu/dma: Avoid unlikely high-order allocations
iommu/dma: Add some missing #includes
| -rw-r--r-- | drivers/iommu/dma-iommu.c | 11 | ||||
| -rw-r--r-- | drivers/iommu/ipmmu-vmsa.c | 2 |
2 files changed, 9 insertions, 4 deletions
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index 3a20db4f8604..72d6182666cb 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -21,10 +21,13 @@ #include <linux/device.h> #include <linux/dma-iommu.h> +#include <linux/gfp.h> #include <linux/huge_mm.h> #include <linux/iommu.h> #include <linux/iova.h> #include <linux/mm.h> +#include <linux/scatterlist.h> +#include <linux/vmalloc.h> int iommu_dma_init(void) { @@ -191,6 +194,7 @@ static struct page **__iommu_dma_alloc_pages(unsigned int count, gfp_t gfp) { struct page **pages; unsigned int i = 0, array_size = count * sizeof(*pages); + unsigned int order = MAX_ORDER; if (array_size <= PAGE_SIZE) pages = kzalloc(array_size, GFP_KERNEL); @@ -204,14 +208,15 @@ static struct page **__iommu_dma_alloc_pages(unsigned int count, gfp_t gfp) while (count) { struct page *page = NULL; - int j, order = __fls(count); + int j; /* * Higher-order allocations are a convenience rather * than a necessity, hence using __GFP_NORETRY until * falling back to single-page allocations. */ - for (order = min(order, MAX_ORDER); order > 0; order--) { + for (order = min_t(unsigned int, order, __fls(count)); + order > 0; order--) { page = alloc_pages(gfp | __GFP_NORETRY, order); if (!page) continue; @@ -453,7 +458,7 @@ int iommu_dma_map_sg(struct device *dev, struct scatterlist *sg, size_t s_offset = iova_offset(iovad, s->offset); size_t s_length = s->length; - sg_dma_address(s) = s->offset; + sg_dma_address(s) = s_offset; sg_dma_len(s) = s_length; s->offset -= s_offset; s_length = iova_align(iovad, s_length + s_offset); diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c index 8cf605fa9946..dfb868e2d129 100644 --- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -295,7 +295,7 @@ static struct iommu_gather_ops ipmmu_gather_ops = { static int ipmmu_domain_init_context(struct ipmmu_vmsa_domain *domain) { - phys_addr_t ttbr; + u64 ttbr; /* * Allocate the page table operations. |