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

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Message-ID: <70f5170f-70eb-4244-9049-a994ec503ac6@lambdal.com>
Date: Wed, 21 Jan 2026 10:54:36 -0800
From: Carlos Bilbao <carlos.bilbao@...bdal.com>
To: mustafa.ismail@...el.com, shiraz.saleem@...el.com, jgg@...pe.ca,
 leon@...nel.org
Cc: bilbao@...edu, linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org,
 carlos.bilbao@...nel.org
Subject: [PATCH] RDMA/irdma: Use kvzalloc for paged memory DMA address array

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).

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 0422787592d8..59ef9856fd25 100644
--- a/drivers/infiniband/hw/irdma/utils.c
+++ b/drivers/infiniband/hw/irdma/utils.c
@@ -2257,7 +2257,7 @@ 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;
@@ -2274,7 +2274,7 @@ 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;

@@ -2295,7 +2295,7 @@ 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;
-- 2.50.1 (Apple Git-155)