提交 e028a9e6 编写于 作者: A Alex Williamson 提交者: Joerg Roedel

iommu/amd: Fix interrupt remapping for aliased devices

An apparent cut and paste error prevents the correct flags from being
set on the alias device resulting in MSI on conventional PCI devices
failing to work.  This also produces error events from the IOMMU like:

AMD-Vi: Event logged [INVALID_DEVICE_REQUEST device=00:14.4 address=0x000000fdf8000000 flags=0x0a00]

Where 14.4 is a PCIe-to-PCI bridge with a device behind it trying to
use MSI interrupts.
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: NJoerg Roedel <joro@8bytes.org>
上级 d6d211db
......@@ -3999,7 +3999,7 @@ static struct irq_remap_table *get_irq_table(u16 devid, bool ioapic)
iommu_flush_dte(iommu, devid);
if (devid != alias) {
irq_lookup_table[alias] = table;
set_dte_irq_entry(devid, table);
set_dte_irq_entry(alias, table);
iommu_flush_dte(iommu, alias);
}
......
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