diff mbox

[RFC,v2,04/12] drivers/iommu/amd_iommu: update usage of address zone modifiers

Message ID 1526916033-4877-5-git-send-email-yehs2007@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Huaisheng Ye May 21, 2018, 3:20 p.m. UTC 
From: Huaisheng Ye <yehs1@lenovo.com>

Use __GFP_ZONE_MASK to replace (__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32).

___GFP_DMA, ___GFP_HIGHMEM and ___GFP_DMA32 have been deleted from GFP
bitmasks, the bottom three bits of GFP mask is reserved for storing
encoded zone number.
__GFP_DMA, __GFP_HIGHMEM and __GFP_DMA32 should not be operated by OR.

Signed-off-by: Huaisheng Ye <yehs1@lenovo.com>
Cc: Joerg Roedel <joro@8bytes.org>
---
 drivers/iommu/amd_iommu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox

Patch

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 74788fd..3921d53 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2614,7 +2614,7 @@  static void *alloc_coherent(struct device *dev, size_t size,
 	dma_dom   = to_dma_ops_domain(domain);
 	size	  = PAGE_ALIGN(size);
 	dma_mask  = dev->coherent_dma_mask;
-	flag     &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32);
+	flag     &= ~__GFP_ZONE_MASK;
 	flag     |= __GFP_ZERO;
 
 	page = alloc_pages(flag | __GFP_NOWARN,  get_order(size));