From 038d07a283d62336b32cc23b62aecdf9418cfc11 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 19 Mar 2018 11:38:14 +0100 Subject: 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 Signed-off-by: Christoph Hellwig Reviewed-by: Thomas Gleixner Reviewed-by: Konrad Rzeszutek Wilk Cc: David Woodhouse Cc: Joerg Roedel Cc: Jon Mason Cc: Linus Torvalds Cc: Muli Ben-Yehuda Cc: Peter Zijlstra Cc: iommu@lists.linux-foundation.org Link: http://lkml.kernel.org/r/20180319103826.12853-3-hch@lst.de Signed-off-by: Ingo Molnar --- arch/x86/mm/mem_encrypt.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'arch/x86/mm') 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); -- cgit v1.2.3