Author: jhb
Date: Sat Aug 20 00:22:39 2016
New Revision: 304511
URL: https://svnweb.freebsd.org/changeset/base/304511
Log:
MFC 298950: 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.
Modified:
stable/10/sys/dev/pci/pci.c
Directory Properties:
stable/10/ (props changed)
Changes in other areas also in this revision:
Modified:
stable/8/sys/dev/pci/pci.c
stable/9/sys/dev/pci/pci.c
Directory Properties:
stable/8/sys/ (props changed)
stable/8/sys/dev/ (props changed)
stable/8/sys/dev/pci/ (props changed)
stable/9/sys/ (props changed)
stable/9/sys/dev/ (props changed)
Modified: stable/10/sys/dev/pci/pci.c
==============================================================================
--- stable/10/sys/dev/pci/pci.c Sat Aug 20 00:08:10 2016 (r304510)
+++ stable/10/sys/dev/pci/pci.c Sat Aug 20 00:22:39 2016 (r304511)
@@ -1744,7 +1744,7 @@ 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);
}
@@ -1758,7 +1758,7 @@ 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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