| From 4677dd55d55832dab1e4f41fe9a7fabe8bb95197 Mon Sep 17 00:00:00 2001 |
| From: Jan Kiszka <jan.kiszka@siemens.com> |
| 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 <jan.kiszka@siemens.com> |
| (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; |
| |