From mboxrd@z Thu Jan 1 00:00:00 1970 From: Liu Bo Subject: [PATCH] virtio-fs: fix multiple tag support Date: Sun, 17 Mar 2019 08:35:21 +0800 Message-ID: <20190317003521.69366-1-bo.liu@linux.alibaba.com> References: <20181210171318.16998-19-vgoyal@redhat.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org To: Vivek Goyal Return-path: In-Reply-To: <20181210171318.16998-19-vgoyal@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org While doing memremap from pci_dev's system bus address to kernel virtual address, we assign a wrong value to the %end of pgmap.res, which ends up with a wrong resource size in the process of memremap, and that further prevent the second virtiofs pci device from being probed successfully. Signed-off-by: Liu Bo --- fs/fuse/virtio_fs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c index 88b00055589b..7abf2187d85f 100644 --- a/fs/fuse/virtio_fs.c +++ b/fs/fuse/virtio_fs.c @@ -713,7 +713,7 @@ static int virtio_fs_setup_dax(struct virtio_device *vdev, struct virtio_fs *fs) pgmap->res = (struct resource){ .name = "virtio-fs dax window", .start = phys_addr, - .end = phys_addr + cache_len, + .end = phys_addr + cache_len - 1, }; fs->window_kaddr = devm_memremap_pages(&pci_dev->dev, pgmap); -- 2.20.1.2.gb21ebb6