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