linux-kernel - [PATCH] iommu/amd: Pass gfp flags to iommu_map_page() in amd_iommu

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Message-Id: <20191018090736.18819-1-joro@8bytes.org>
Date:   Fri, 18 Oct 2019 11:07:36 +0200
From:   Joerg Roedel <joro@...tes.org>
To:     Joerg Roedel <joro@...tes.org>
Cc:     Qian Cai <cai@....pw>, Dan Carpenter <dan.carpenter@...cle.com>,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        Joerg Roedel <jroedel@...e.de>
Subject: [PATCH] iommu/amd: Pass gfp flags to iommu_map_page() in amd_iommu_map()

From: Joerg Roedel <jroedel@...e.de>

A recent commit added a gfp parameter to amd_iommu_map() to make it
callable from atomic context, but forgot to pass it down to
iommu_map_page() and left GFP_KERNEL there. This caused
sleep-while-atomic warnings and needs to be fixed.

Reported-by: Qian Cai <cai@....pw>
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Fixes: 781ca2de89ba ("iommu: Add gfp parameter to iommu_ops::map")
Signed-off-by: Joerg Roedel <jroedel@...e.de>
---
 drivers/iommu/amd_iommu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 0d2479546b77..fb54df5c2e11 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2561,7 +2561,7 @@ static int amd_iommu_map(struct iommu_domain *dom, unsigned long iova,
 	if (iommu_prot & IOMMU_WRITE)
 		prot |= IOMMU_PROT_IW;
 
-	ret = iommu_map_page(domain, iova, paddr, page_size, prot, GFP_KERNEL);
+	ret = iommu_map_page(domain, iova, paddr, page_size, prot, gfp);
 
 	domain_flush_np_cache(domain, iova, page_size);
 
-- 
2.16.4