This is a note to let you know that I've just added the patch titled
swiotlb-xen: pass dev_addr to xen_dma_unmap_page and xen_dma_sync_single_for_cpu
to the 3.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
swiotlb-xen-pass-dev_addr-to-xen_dma_unmap_page-and-xen_dma_sync_single_for_cpu.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d6883e6f32e07ef2cc974753ba00927de099e6d7 Mon Sep 17 00:00:00 2001
From: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Date: Fri, 21 Nov 2014 11:09:39 +0000
Subject: swiotlb-xen: pass dev_addr to xen_dma_unmap_page and xen_dma_sync_single_for_cpu
From: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
commit d6883e6f32e07ef2cc974753ba00927de099e6d7 upstream.
xen_dma_unmap_page and xen_dma_sync_single_for_cpu take a dma_addr_t
handle as argument, not a physical address.
Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/xen/swiotlb-xen.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c
@@ -447,7 +447,7 @@ static void xen_unmap_single(struct devi
BUG_ON(dir == DMA_NONE);
- xen_dma_unmap_page(hwdev, paddr, size, dir, attrs);
+ xen_dma_unmap_page(hwdev, dev_addr, size, dir, attrs);
/* NOTE: We use dev_addr here, not paddr! */
if (is_xen_swiotlb_buffer(dev_addr)) {
@@ -495,14 +495,14 @@ xen_swiotlb_sync_single(struct device *h
BUG_ON(dir == DMA_NONE);
if (target == SYNC_FOR_CPU)
- xen_dma_sync_single_for_cpu(hwdev, paddr, size, dir);
+ xen_dma_sync_single_for_cpu(hwdev, dev_addr, size, dir);
/* NOTE: We use dev_addr here, not paddr! */
if (is_xen_swiotlb_buffer(dev_addr))
swiotlb_tbl_sync_single(hwdev, paddr, size, dir, target);
if (target == SYNC_FOR_DEVICE)
- xen_dma_sync_single_for_cpu(hwdev, paddr, size, dir);
+ xen_dma_sync_single_for_cpu(hwdev, dev_addr, size, dir);
if (dir != DMA_FROM_DEVICE)
return;
Patches currently in stable-queue which might be from stefano.stabellini@xxxxxxxxxxxxx are
queue-3.18/swiotlb-xen-pass-dev_addr-to-swiotlb_tbl_unmap_single.patch
queue-3.18/swiotlb-xen-call-xen_dma_sync_single_for_device-when-appropriate.patch
queue-3.18/swiotlb-xen-remove-bug_on-in-xen_bus_to_phys.patch
queue-3.18/swiotlb-xen-pass-dev_addr-to-xen_dma_unmap_page-and-xen_dma_sync_single_for_cpu.patch
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