Author: kib
Date: Fri Jan 9 02:10:44 2015
New Revision: 276867
URL: https://svnweb.freebsd.org/changeset/base/276867
Log:
Fix DMAR context allocations for the devices behind PCIe->PCI bridges
after dmar driver was converted to use rids. The bus component to
calculate context page must be taken from the requestor rid, which is
a bridge, and not from the device bus number.
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Modified:
head/sys/x86/iommu/intel_ctx.c
Modified: head/sys/x86/iommu/intel_ctx.c
==============================================================================
--- head/sys/x86/iommu/intel_ctx.c Fri Jan 9 01:57:11 2015
(r276866)
+++ head/sys/x86/iommu/intel_ctx.c Fri Jan 9 02:10:44 2015
(r276867)
@@ -288,7 +288,7 @@ dmar_get_ctx(struct dmar_unit *dmar, dev
* higher chance to succeed if the sleep is allowed.
*/
DMAR_UNLOCK(dmar);
- dmar_ensure_ctx_page(dmar, bus);
+ dmar_ensure_ctx_page(dmar, PCI_RID2BUS(rid));
ctx1 = dmar_get_ctx_alloc(dmar, rid);
if (id_mapped) {
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