From b70f2ecb71b212225f403a8f26d3d5bdca70a107 Mon Sep 17 00:00:00 2001 From: Jan Kiszka Date: Thu, 24 Nov 2016 08:27:45 +0100 Subject: [PATCH 14/32] 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 --- drivers/net/ivshmem-net.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ivshmem-net.c b/drivers/net/ivshmem-net.c index b676bed2cc2e..a535cb71adde 100644 --- a/drivers/net/ivshmem-net.c +++ b/drivers/net/ivshmem-net.c @@ -802,7 +802,7 @@ static int ivshm_net_probe(struct pci_dev *pdev, 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; -- 2.11.0