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path: root/drivers/iommu/amd_iommu_v2.c
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Diffstat (limited to 'drivers/iommu/amd_iommu_v2.c')
-rw-r--r--drivers/iommu/amd_iommu_v2.c26
1 files changed, 17 insertions, 9 deletions
diff --git a/drivers/iommu/amd_iommu_v2.c b/drivers/iommu/amd_iommu_v2.c
index 6629c472eafd..7d94e1d39e5e 100644
--- a/drivers/iommu/amd_iommu_v2.c
+++ b/drivers/iommu/amd_iommu_v2.c
@@ -391,13 +391,6 @@ static int mn_clear_flush_young(struct mmu_notifier *mn,
return 0;
}
-static void mn_invalidate_page(struct mmu_notifier *mn,
- struct mm_struct *mm,
- unsigned long address)
-{
- __mn_flush_page(mn, address);
-}
-
static void mn_invalidate_range(struct mmu_notifier *mn,
struct mm_struct *mm,
unsigned long start, unsigned long end)
@@ -436,7 +429,6 @@ static void mn_release(struct mmu_notifier *mn, struct mm_struct *mm)
static const struct mmu_notifier_ops iommu_mn = {
.release = mn_release,
.clear_flush_young = mn_clear_flush_young,
- .invalidate_page = mn_invalidate_page,
.invalidate_range = mn_invalidate_range,
};
@@ -562,14 +554,30 @@ static int ppr_notifier(struct notifier_block *nb, unsigned long e, void *data)
unsigned long flags;
struct fault *fault;
bool finish;
- u16 tag;
+ u16 tag, devid;
int ret;
+ struct iommu_dev_data *dev_data;
+ struct pci_dev *pdev = NULL;
iommu_fault = data;
tag = iommu_fault->tag & 0x1ff;
finish = (iommu_fault->tag >> 9) & 1;
+ devid = iommu_fault->device_id;
+ pdev = pci_get_bus_and_slot(PCI_BUS_NUM(devid), devid & 0xff);
+ if (!pdev)
+ return -ENODEV;
+ dev_data = get_dev_data(&pdev->dev);
+
+ /* In kdump kernel pci dev is not initialized yet -> send INVALID */
ret = NOTIFY_DONE;
+ if (translation_pre_enabled(amd_iommu_rlookup_table[devid])
+ && dev_data->defer_attach) {
+ amd_iommu_complete_ppr(pdev, iommu_fault->pasid,
+ PPR_INVALID, tag);
+ goto out;
+ }
+
dev_state = get_device_state(iommu_fault->device_id);
if (dev_state == NULL)
goto out;