linux-kernel - [PATCH 10/17] iommu/vt-d: Allocate irq remapping table bitmap with GFP

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Message-Id: <1433513463-19128-11-git-send-email-joro@8bytes.org>
Date:	Fri,  5 Jun 2015 16:10:56 +0200
From:	Joerg Roedel <joro@...tes.org>
To:	iommu@...ts.linux-foundation.org
Cc:	zhen-hual@...com, bhe@...hat.com, dwmw2@...radead.org,
	vgoyal@...hat.com, dyoung@...hat.com, alex.williamson@...hat.com,
	ddutile@...hat.com, ishii.hironobu@...fujitsu.com,
	indou.takao@...fujitsu.com, bhelgaas@...gle.com, doug.hatch@...com,
	jerry.hoemann@...com, tom.vaden@...com, li.zhang6@...com,
	lisa.mitchell@...com, billsumnerlinux@...il.com, rwright@...com,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
	kexec@...ts.infradead.org, joro@...tes.org, jroedel@...e.de
Subject: [PATCH 10/17] iommu/vt-d: Allocate irq remapping table bitmap with GFP_KERNEL

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

This function does not run in atomic context, so no reason
to do a GFP_ATOMIC allocation.

Tested-by: Baoquan He <bhe@...hat.com>
Signed-off-by: Joerg Roedel <jroedel@...e.de>
---
 drivers/iommu/intel_irq_remapping.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/intel_irq_remapping.c b/drivers/iommu/intel_irq_remapping.c
index 34667d5..d22518d 100644
--- a/drivers/iommu/intel_irq_remapping.c
+++ b/drivers/iommu/intel_irq_remapping.c
@@ -510,7 +510,7 @@ static int intel_setup_irq_remapping(struct intel_iommu *iommu)
 	}
 
 	bitmap = kcalloc(BITS_TO_LONGS(INTR_REMAP_TABLE_ENTRIES),
-			 sizeof(long), GFP_ATOMIC);
+			 sizeof(long), GFP_KERNEL | __GFP_ZERO);
 	if (bitmap == NULL) {
 		pr_err("Failed to allocate bitmap for IR[%d]\n", iommu->seq_id);
 		goto out_free_pages;
-- 
1.9.1

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