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27 lines
940 B
Diff
27 lines
940 B
Diff
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From 4677dd55d55832dab1e4f41fe9a7fabe8bb95197 Mon Sep 17 00:00:00 2001
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From: Jan Kiszka <jan.kiszka@siemens.com>
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Date: Thu, 24 Nov 2016 08:27:45 +0100
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Subject: [PATCH] ivshmem-net: Map shmem region as RAM
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No need for special caching, simply map the shared memory region like
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RAM, thus write-back. This gives us another order of magnitude in
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throughput.
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Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
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(cherry picked from commit af59c6541a65622cab498851e01653dd378cd9f8)
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---
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drivers/net/ivshmem-net.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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--- a/drivers/net/ivshmem-net.c
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+++ b/drivers/net/ivshmem-net.c
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@@ -802,7 +802,7 @@ static int ivshm_net_probe(struct pci_de
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if (!devm_request_mem_region(&pdev->dev, shmaddr, shmlen, DRV_NAME))
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return -EBUSY;
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- shm = devm_memremap(&pdev->dev, shmaddr, shmlen, MEMREMAP_WC);
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+ shm = devm_memremap(&pdev->dev, shmaddr, shmlen, MEMREMAP_WB);
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if (!shm)
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return -ENOMEM;
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