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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-05-24 14:42:43 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-05-24 14:42:43 -0700 |
| commit | b50694381cfc22dce3a60a291cdae294a5e5777c (patch) | |
| tree | bea2140986075ae2586f61a31a4ebc75b7435489 /drivers | |
| parent | 34b48b8789adf344d1012fda5d796994d4ddfc14 (diff) | |
| parent | 4855c92dbb7b3b85c23e88ab7ca04f99b9677b41 (diff) | |
| download | lwn-b50694381cfc22dce3a60a291cdae294a5e5777c.tar.gz lwn-b50694381cfc22dce3a60a291cdae294a5e5777c.zip | |
Merge branch 'stable/for-linus-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb
Pull swiotlb fix from Konrad Rzeszutek Wilk:
"One single fix in here: under Xen the DMA32 heap (in the hypervisor)
would end up looking like swiss cheese.
The reason being that for every coherent DMA allocation we didn't do
the proper hypercall to tell Xen to return the page back to the DMA32
heap. End result was (eventually) no DMA32 space if you (for example)
continously unloaded and loaded modules"
* 'stable/for-linus-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb:
xen-swiotlb: fix the check condition for xen_swiotlb_free_coherent
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/xen/swiotlb-xen.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index e1c60899fdbc..a6f9ba85dc4b 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -351,7 +351,7 @@ xen_swiotlb_free_coherent(struct device *hwdev, size_t size, void *vaddr, * physical address */ phys = xen_bus_to_phys(dev_addr); - if (((dev_addr + size - 1 > dma_mask)) || + if (((dev_addr + size - 1 <= dma_mask)) || range_straddles_page_boundary(phys, size)) xen_destroy_contiguous_region(phys, order); |