diff options
| author | Christoph Hellwig <hch@lst.de> | 2018-03-19 13:38:14 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-03-20 12:01:56 +0300 |
| commit | 038d07a283d62336b32cc23b62aecdf9418cfc11 (patch) | |
| tree | f47625ddf15e599aca16e56262b37968bd3a1779 /arch/x86/mm/mem_encrypt.c | |
| parent | 3eb93ea3272d428aab3c03e2dd272a78a7729ba8 (diff) | |
| download | linux-038d07a283d62336b32cc23b62aecdf9418cfc11.tar.xz | |
x86/dma: Remove dma_alloc_coherent_mask()
These days all devices (including the ISA fallback device) have a coherent
DMA mask set, so remove the workaround.
Tested-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Jon Mason <jdmason@kudzu.us>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Muli Ben-Yehuda <mulix@mulix.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: iommu@lists.linux-foundation.org
Link: http://lkml.kernel.org/r/20180319103826.12853-3-hch@lst.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/mm/mem_encrypt.c')
| -rw-r--r-- | arch/x86/mm/mem_encrypt.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/x86/mm/mem_encrypt.c b/arch/x86/mm/mem_encrypt.c index 3a1b5fe4c2ca..f6cd84beb610 100644 --- a/arch/x86/mm/mem_encrypt.c +++ b/arch/x86/mm/mem_encrypt.c @@ -198,12 +198,10 @@ void __init sme_early_init(void) static void *sev_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs) { - unsigned long dma_mask; unsigned int order; struct page *page; void *vaddr = NULL; - dma_mask = dma_alloc_coherent_mask(dev, gfp); order = get_order(size); /* @@ -221,7 +219,7 @@ static void *sev_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle, * mask with it already cleared. */ addr = __sme_clr(phys_to_dma(dev, page_to_phys(page))); - if ((addr + size) > dma_mask) { + if ((addr + size) > dev->coherent_dma_mask) { __free_pages(page, get_order(size)); } else { vaddr = page_address(page); |