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From b70f2ecb71b212225f403a8f26d3d5bdca70a107 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 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 <jan.kiszka@siemens.com>
---
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
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