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IOMMU Fixes for Linux v4.19-rc5 

Three fixes queued up:
 
 	- Warning fix for Rockchip IOMMU where there were IRQ handlers
 	  for offlined hardware.
 
 	- Fix for Intel VT-d because recent changes caused boot failures
 	  on some machines because it tried to allocate to much
 	  contiguous memory.
 
 	- Fix for AMD IOMMU to handle eMMC devices correctly that appear
 	  as ACPI HID devices.
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Merge tag 'iommu-fixes-v4.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Joerg writes:
  "IOMMU Fixes for Linux v4.19-rc5

   Three fixes queued up:

	- Warning fix for Rockchip IOMMU where there were IRQ handlers
	  for offlined hardware.

	- Fix for Intel VT-d because recent changes caused boot failures
	  on some machines because it tried to allocate to much
	  contiguous memory.

	- Fix for AMD IOMMU to handle eMMC devices correctly that appear
	  as ACPI HID devices."

* tag 'iommu-fixes-v4.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/amd: Return devid as alias for ACPI HID devices
  iommu/vt-d: Handle memory shortage on pasid table allocation
  iommu/rockchip: Free irqs in shutdown handler
hifive-unleashed-5.1
Greg Kroah-Hartman 2018-09-26 13:08:53 +02:00
parent a38523185b 5ebb1bc2d6
commit c307aaf3eb
4 changed files with 16 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/iommu/amd_iommu.c
View File

@ -246,7 +246,13 @@ static u16 get_alias(struct device *dev)
/* The callers make sure that get_device_id() does not fail here */
devid = get_device_id(dev);
/* For ACPI HID devices, we simply return the devid as such */
if (!dev_is_pci(dev))
return devid;
ivrs_alias = amd_iommu_alias_table[devid];
pci_for_each_dma_alias(pdev, __last_alias, &pci_alias);
if (ivrs_alias == pci_alias)

6
drivers/iommu/intel-iommu.c
View File

@ -2540,9 +2540,9 @@ static struct dmar_domain *dmar_insert_one_dev_info(struct intel_iommu *iommu,
if (dev && dev_is_pci(dev) && info->pasid_supported) {
ret = intel_pasid_alloc_table(dev);
if (ret) {
__dmar_remove_one_dev_info(info);
spin_unlock_irqrestore(&device_domain_lock, flags);
return NULL;
pr_warn("No pasid table for %s, pasid disabled\n",
dev_name(dev));
info->pasid_supported = 0;
}
}
spin_unlock_irqrestore(&device_domain_lock, flags);

2
drivers/iommu/intel-pasid.h
View File

@ -11,7 +11,7 @@
#define __INTEL_PASID_H
#define PASID_MIN 0x1
#define PASID_MAX 0x100000
#define PASID_MAX 0x20000
struct pasid_entry {
u64 val;

6
drivers/iommu/rockchip-iommu.c
View File

@ -1241,6 +1241,12 @@ err_unprepare_clocks:
static void rk_iommu_shutdown(struct platform_device *pdev)
{
struct rk_iommu *iommu = platform_get_drvdata(pdev);
int i = 0, irq;
while ((irq = platform_get_irq(pdev, i++)) != -ENXIO)
devm_free_irq(iommu->dev, irq, iommu);
pm_runtime_force_suspend(&pdev->dev);
}