redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

IOMMU Fixes for Linux v5.0-rc4 

A few more fixes this time:
 
 	- Two patches to fix the error path of the map_sg implementation
 	  of the AMD IOMMU driver.
 
 	- Also a missing IOTLB flush is fixed in the AMD IOMMU driver.
 
 	- Memory leak fix for the Intel IOMMU driver.
 
 	- Fix a regression in the Mediatek IOMMU driver which caused
 	  device initialization to fail (seen as broken HDMI output).
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQIcBAABAgAGBQJcUbw6AAoJECvwRC2XARrjlhQP/1tvg9nam673Otx45FnmvKUk
 7Bu5oLRXo67zBA9NqYZKaENFLTzb9TneyalSoiMwWfZTSaLTFgleieeT6iij1uU+
 D4TEpXF7Jc87Zm7pPASuWHGEu3XR0dKja4pukVHnH0vRXlOhKsP6MrmEUj2+5ZrJ
 RBXSX4a9Q6Ros2OxjnxJNxo8oekJQV0TiKtafzSUqPHnF4QLHLisuCe3z2DLwtsg
 NHwis0Fgrb9ljM+pxEBYmeG9UXxfdvG2wlmYwrJvhoK+lmsjq1HjG5afxyMYvHSU
 daK+mBvZ4HHLCe5oVY+BaMo8De1g1spqT2klWZecgr0FDXQdovdkYipSun6TZO/i
 2dv8QvMkCwFwLfReJj1AV6qf83zR3Sn/rb4MKqo0/K9xlHc3WxVoN20Tcikwg6wN
 5bPucgNkpavJxiODjfd6iiBC0K7SAOnvkiACySSXe5daL/Oi9c9q6izy7Z1z1D7q
 UomvUCGyIj01drG+YC9m1eH4dqILTiDJGA5mrdtoAEDFYwYtp+354fF3u0x2sCsb
 g87KV4RdAMuXRKWdxdsfw1BFNliHo4QcGDQk54bwN2t4X6hkOiq9jLMVcm4R+Fwy
 IcCoS0BXVdbD0PZXeb2M4CHkxsV7AIU7Drj2/fb4pmjuMb22Z7228yRCsIIYzGcM
 qq2AnNS1J0Z9BsxIItWO
 =kSY5
 -----END PGP SIGNATURE-----

Merge tag 'iommu-fixes-v5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull IOMMU fixes from Joerg Roedel:
 "A few more fixes this time:

   - Two patches to fix the error path of the map_sg implementation of
     the AMD IOMMU driver.

   - Also a missing IOTLB flush is fixed in the AMD IOMMU driver.

   - Memory leak fix for the Intel IOMMU driver.

   - Fix a regression in the Mediatek IOMMU driver which caused device
     initialization to fail (seen as broken HDMI output)"

* tag 'iommu-fixes-v5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/amd: Fix IOMMU page flush when detach device from a domain
  iommu/mediatek: Use correct fwspec in mtk_iommu_add_device()
  iommu/vt-d: Fix memory leak in intel_iommu_put_resv_regions()
  iommu/amd: Unmap all mapped pages in error path of map_sg
  iommu/amd: Call free_iova_fast with pfn in map_sg
hifive-unleashed-5.1
Linus Torvalds 2019-01-30 09:30:03 -08:00
parent 877ef51d53 9825bd94e3
commit 1c0490ce90
3 changed files with 18 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/iommu/amd_iommu.c
View File

@ -1991,16 +1991,13 @@ static void do_attach(struct iommu_dev_data *dev_data,
static void do_detach(struct iommu_dev_data *dev_data)
{
struct protection_domain *domain = dev_data->domain;
struct amd_iommu *iommu;
u16 alias;
iommu = amd_iommu_rlookup_table[dev_data->devid];
alias = dev_data->alias;
/* decrease reference counters */
dev_data->domain->dev_iommu[iommu->index] -= 1;
dev_data->domain->dev_cnt -= 1;
/* Update data structures */
dev_data->domain = NULL;
list_del(&dev_data->list);
@ -2010,6 +2007,16 @@ static void do_detach(struct iommu_dev_data *dev_data)
/* Flush the DTE entry */
device_flush_dte(dev_data);
/* Flush IOTLB */
domain_flush_tlb_pde(domain);
/* Wait for the flushes to finish */
domain_flush_complete(domain);
/* decrease reference counters - needs to happen after the flushes */
domain->dev_iommu[iommu->index] -= 1;
domain->dev_cnt -= 1;
}
/*
@ -2617,13 +2624,13 @@ out_unmap:
bus_addr = address + s->dma_address + (j << PAGE_SHIFT);
iommu_unmap_page(domain, bus_addr, PAGE_SIZE);
if (--mapped_pages)
if (--mapped_pages == 0)
goto out_free_iova;
}
}
out_free_iova:
free_iova_fast(&dma_dom->iovad, address, npages);
free_iova_fast(&dma_dom->iovad, address >> PAGE_SHIFT, npages);
out_err:
return 0;

2
drivers/iommu/intel-iommu.c
View File

@ -5294,7 +5294,7 @@ static void intel_iommu_put_resv_regions(struct device *dev,
struct iommu_resv_region *entry, *next;
list_for_each_entry_safe(entry, next, head, list) {
if (entry->type == IOMMU_RESV_RESERVED)
if (entry->type == IOMMU_RESV_MSI)
kfree(entry);
}
}

4
drivers/iommu/mtk_iommu_v1.c
View File

@ -441,6 +441,10 @@ static int mtk_iommu_add_device(struct device *dev)
iommu_spec.args_count = count;
mtk_iommu_create_mapping(dev, &iommu_spec);
/* dev->iommu_fwspec might have changed */
fwspec = dev_iommu_fwspec_get(dev);
of_node_put(iommu_spec.np);
}