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authorChristoph Hellwig <hch@lst.de>2018-03-19 13:38:14 +0300
committerIngo Molnar <mingo@kernel.org>2018-03-20 12:01:56 +0300
commit038d07a283d62336b32cc23b62aecdf9418cfc11 (patch)
treef47625ddf15e599aca16e56262b37968bd3a1779 /arch/x86/mm/mem_encrypt.c
parent3eb93ea3272d428aab3c03e2dd272a78a7729ba8 (diff)
downloadlinux-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.c4
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);