linux-kernel - [PATCH] iommu/intel: Do not use GFP

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Message-Id: <e2a8a1019ffc8a86b4b4ed93def3623f60581274.1675542576.git.christophe.jaillet@wanadoo.fr>
Date:   Sat,  4 Feb 2023 21:31:45 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     David Woodhouse <dwmw2@...radead.org>,
        Lu Baolu <baolu.lu@...ux.intel.com>,
        Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        iommu@...ts.linux.dev
Subject: [PATCH] iommu/intel: Do not use GFP_ATOMIC when not needed

There is no need to use GFP_ATOMIC here. GFP_KERNEL is already used for
some other memory allocations just a few lines above.

Commit e3a981d61d15 ("iommu/vt-d: Convert allocations to GFP_KERNEL") has
changed the other memory allocation flags.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 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 6d01fa078c36..013ccc25ee4f 100644
--- a/drivers/iommu/intel/irq_remapping.c
+++ b/drivers/iommu/intel/irq_remapping.c
@@ -552,7 +552,7 @@ static int intel_setup_irq_remapping(struct intel_iommu *iommu)
 		goto out_free_table;
 	}
 
-	bitmap = bitmap_zalloc(INTR_REMAP_TABLE_ENTRIES, GFP_ATOMIC);
+	bitmap = bitmap_zalloc(INTR_REMAP_TABLE_ENTRIES, GFP_KERNEL);
 	if (bitmap == NULL) {
 		pr_err("IR%d: failed to allocate bitmap\n", iommu->seq_id);
 		goto out_free_pages;
-- 
2.34.1