diff options
Diffstat (limited to 'meta-agl-jailhouse/recipes-kernel/linux/linux/0014-ivshmem-net-Map-shmem-region-as-RAM.patch')
| -rw-r--r-- | meta-agl-jailhouse/recipes-kernel/linux/linux/0014-ivshmem-net-Map-shmem-region-as-RAM.patch | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/meta-agl-jailhouse/recipes-kernel/linux/linux/0014-ivshmem-net-Map-shmem-region-as-RAM.patch b/meta-agl-jailhouse/recipes-kernel/linux/linux/0014-ivshmem-net-Map-shmem-region-as-RAM.patch new file mode 100644 index 00000000..de66d7a7 --- /dev/null +++ b/meta-agl-jailhouse/recipes-kernel/linux/linux/0014-ivshmem-net-Map-shmem-region-as-RAM.patch @@ -0,0 +1,30 @@ +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 + |