From: Stephen Hemminger <stephen@networkplumber.org>
Date: Fri, 14 Sep 2018 09:10:19 -0700
Patch-mainline: v4.20-rc1
Subject: hv_uio_generic: map ringbuffer phys addr
Git-commit: 9da197f1df40c838f0f06abf94cd23b4ed81e522
References: fate#323887
The ring buffer is contiguous IOVA and is mapped via phys addr
for sysfs file. Use same method for the UIO mapping.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Olaf Hering <ohering@suse.de>
---
drivers/uio/uio_hv_generic.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/uio/uio_hv_generic.c b/drivers/uio/uio_hv_generic.c
--- a/drivers/uio/uio_hv_generic.c
+++ b/drivers/uio/uio_hv_generic.c
@@ -224,10 +224,10 @@ hv_uio_probe(struct hv_device *dev,
/* mem resources */
pdata->info.mem[TXRX_RING_MAP].name = "txrx_rings";
pdata->info.mem[TXRX_RING_MAP].addr
- = (uintptr_t)page_address(dev->channel->ringbuffer_page);
+ = (uintptr_t)virt_to_phys(page_address(dev->channel->ringbuffer_page));
pdata->info.mem[TXRX_RING_MAP].size
= dev->channel->ringbuffer_pagecount << PAGE_SHIFT;
- pdata->info.mem[TXRX_RING_MAP].memtype = UIO_MEM_LOGICAL;
+ pdata->info.mem[TXRX_RING_MAP].memtype = UIO_MEM_IOVA;
pdata->info.mem[INT_PAGE_MAP].name = "int_page";
pdata->info.mem[INT_PAGE_MAP].addr