svn commit: r280435 - head/sys/x86/iommu
Konstantin Belousov
kib at FreeBSD.org
Tue Mar 24 12:48:52 UTC 2015
Author: kib
Date: Tue Mar 24 12:48:51 2015
New Revision: 280435
URL: https://svnweb.freebsd.org/changeset/base/280435
Log:
When mapping an allocated entry, use the entry size, instead of the
requested size. If tag restrictions caused split entry, its size is
less then requsted.
Hardware provided by: Michael Fuckner <michael at fuckner.net>
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Modified:
head/sys/x86/iommu/intel_gas.c
Modified: head/sys/x86/iommu/intel_gas.c
==============================================================================
--- head/sys/x86/iommu/intel_gas.c Tue Mar 24 12:46:21 2015 (r280434)
+++ head/sys/x86/iommu/intel_gas.c Tue Mar 24 12:48:51 2015 (r280435)
@@ -649,7 +649,7 @@ dmar_gas_map(struct dmar_ctx *ctx, const
entry->flags |= eflags;
DMAR_CTX_UNLOCK(ctx);
- error = ctx_map_buf(ctx, entry->start, size, ma,
+ error = ctx_map_buf(ctx, entry->start, entry->end - entry->start, ma,
((eflags & DMAR_MAP_ENTRY_READ) != 0 ? DMAR_PTE_R : 0) |
((eflags & DMAR_MAP_ENTRY_WRITE) != 0 ? DMAR_PTE_W : 0) |
((eflags & DMAR_MAP_ENTRY_SNOOP) != 0 ? DMAR_PTE_SNP : 0) |
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