Author: jhb
Date: Tue May 3 00:35:11 2016
New Revision: 298950
URL: https://svnweb.freebsd.org/changeset/base/298950
Log:
Fix an off by one error when remapping MSI-X vectors.
pci_remap_msix() can be used to alter the mapping of allocated
MSI-X vectors to the MSI-X table. The code had an off by one error
when adding the IRQ resources after performing a remap. This was
fatal for any vectors in the table that used the "last" valid IRQ as
those vectors were assigned a garbage IRQ value.
MFC after: 3 days
Modified:
head/sys/dev/pci/pci.c
Modified: head/sys/dev/pci/pci.c
==============================================================================
--- head/sys/dev/pci/pci.c Tue May 3 00:09:13 2016 (r298949)
+++ head/sys/dev/pci/pci.c Tue May 3 00:35:11 2016 (r298950)
@@ -1855,7 +1855,7 @@ pci_remap_msix_method(device_t dev, devi
for (i = 0; i < count; i++) {
if (vectors[i] == 0)
continue;
- irq = msix->msix_vectors[vectors[i]].mv_irq;
+ irq = msix->msix_vectors[vectors[i] - 1].mv_irq;
resource_list_add(&dinfo->resources, SYS_RES_IRQ, i + 1, irq,
irq, 1);
}
@@ -1869,7 +1869,7 @@ pci_remap_msix_method(device_t dev, devi
printf("---");
else
printf("%d",
- msix->msix_vectors[vectors[i]].mv_irq);
+ msix->msix_vectors[vectors[i] - 1].mv_irq);
}
printf("\n");
}
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