linux-kernel - [PATCH v2] RDMA/irdma: Use kvzalloc for paged memory DMA address array

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Message-ID: <20260128014446.405247-1-carlos.bilbao@kernel.org>
Date: Tue, 27 Jan 2026 17:44:46 -0800
From: carlos.bilbao@...nel.org
To: Leon Romanovsky <leon@...nel.org>
Cc: Carlos Bilbao <carlos.bilbao@...bdal.com>,
	linux-rdma@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Carlos Bilbao <carlos.bilbao@...nel.org>,
	Tatyana Nikolova <tatyana.e.nikolova@...el.com>
Subject: [PATCH v2] RDMA/irdma: Use kvzalloc for paged memory DMA address array

From: Carlos Bilbao <carlos.bilbao@...nel.org>

Allocate array chunk->dmainfo.dmaaddrs using kvzalloc() to allow the
allocation to fall back to vmalloc when contiguous memory is unavailable
(instead of failing and logging page allocation warnings).

Acked-by: Tatyana Nikolova <tatyana.e.nikolova@...el.com>
Signed-off-by: Carlos Bilbao (Lambda) <carlos.bilbao@...nel.org>
---
 drivers/infiniband/hw/irdma/utils.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/infiniband/hw/irdma/utils.c b/drivers/infiniband/hw/irdma/utils.c
index 13d7499131d4..6aac6d314564 100644
--- a/drivers/infiniband/hw/irdma/utils.c
+++ b/drivers/infiniband/hw/irdma/utils.c
@@ -2239,7 +2239,7 @@ void irdma_pble_free_paged_mem(struct irdma_chunk *chunk)
 				 chunk->pg_cnt);
 
 done:
-	kfree(chunk->dmainfo.dmaaddrs);
+	kvfree(chunk->dmainfo.dmaaddrs);
 	chunk->dmainfo.dmaaddrs = NULL;
 	vfree(chunk->vaddr);
 	chunk->vaddr = NULL;
@@ -2256,7 +2256,7 @@ int irdma_pble_get_paged_mem(struct irdma_chunk *chunk, u32 pg_cnt)
 	u32 size;
 	void *va;
 
-	chunk->dmainfo.dmaaddrs = kzalloc(pg_cnt << 3, GFP_KERNEL);
+	chunk->dmainfo.dmaaddrs = kvzalloc(pg_cnt << 3, GFP_KERNEL);
 	if (!chunk->dmainfo.dmaaddrs)
 		return -ENOMEM;
 
@@ -2277,7 +2277,7 @@ int irdma_pble_get_paged_mem(struct irdma_chunk *chunk, u32 pg_cnt)
 
 	return 0;
 err:
-	kfree(chunk->dmainfo.dmaaddrs);
+	kvfree(chunk->dmainfo.dmaaddrs);
 	chunk->dmainfo.dmaaddrs = NULL;
 
 	return -ENOMEM;
-- 
2.43.0