1 From 4677dd55d55832dab1e4f41fe9a7fabe8bb95197 Mon Sep 17 00:00:00 2001
2 From: Jan Kiszka <jan.kiszka@siemens.com>
3 Date: Thu, 24 Nov 2016 08:27:45 +0100
4 Subject: [PATCH] ivshmem-net: Map shmem region as RAM
6 No need for special caching, simply map the shared memory region like
7 RAM, thus write-back. This gives us another order of magnitude in
10 Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
11 (cherry picked from commit af59c6541a65622cab498851e01653dd378cd9f8)
13 drivers/net/ivshmem-net.c | 2 +-
14 1 file changed, 1 insertion(+), 1 deletion(-)
16 --- a/drivers/net/ivshmem-net.c
17 +++ b/drivers/net/ivshmem-net.c
18 @@ -802,7 +802,7 @@ static int ivshm_net_probe(struct pci_de
19 if (!devm_request_mem_region(&pdev->dev, shmaddr, shmlen, DRV_NAME))
22 - shm = devm_memremap(&pdev->dev, shmaddr, shmlen, MEMREMAP_WC);
23 + shm = devm_memremap(&pdev->dev, shmaddr, shmlen, MEMREMAP_WB);