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authorLinus Torvalds <torvalds@linux-foundation.org>2012-09-21 17:26:23 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-09-21 17:26:23 -0400
commit9d10890792a96ed796a44565924327aa276fa468 (patch)
tree94e3aa53d8ad06f2867e1f939d981d518d92ac0a /arch
parent519b3b742d7d29c3386f0f35f3cee5dd362dd8e2 (diff)
parent73e8f3d7e2cb23614d5115703d76d8e54764b641 (diff)
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar: "Small fixlets" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm/init.c: Fix devmem_is_allowed() off by one x86/kconfig: Remove outdated reference to Intel CPUs in CONFIG_SWIOTLB
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/Kconfig8
-rw-r--r--arch/x86/mm/init.c2
2 files changed, 5 insertions, 5 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 8ec3a1aa4abd..50a1d1f9b6d3 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -746,10 +746,10 @@ config SWIOTLB
746 def_bool y if X86_64 746 def_bool y if X86_64
747 ---help--- 747 ---help---
748 Support for software bounce buffers used on x86-64 systems 748 Support for software bounce buffers used on x86-64 systems
749 which don't have a hardware IOMMU (e.g. the current generation 749 which don't have a hardware IOMMU. Using this PCI devices
750 of Intel's x86-64 CPUs). Using this PCI devices which can only 750 which can only access 32-bits of memory can be used on systems
751 access 32-bits of memory can be used on systems with more than 751 with more than 3 GB of memory.
752 3 GB of memory. If unsure, say Y. 752 If unsure, say Y.
753 753
754config IOMMU_HELPER 754config IOMMU_HELPER
755 def_bool (CALGARY_IOMMU || GART_IOMMU || SWIOTLB || AMD_IOMMU) 755 def_bool (CALGARY_IOMMU || GART_IOMMU || SWIOTLB || AMD_IOMMU)
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index e0e6990723e9..ab1f6a93b527 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -319,7 +319,7 @@ unsigned long __init_refok init_memory_mapping(unsigned long start,
319 */ 319 */
320int devmem_is_allowed(unsigned long pagenr) 320int devmem_is_allowed(unsigned long pagenr)
321{ 321{
322 if (pagenr <= 256) 322 if (pagenr < 256)
323 return 1; 323 return 1;
324 if (iomem_is_exclusive(pagenr << PAGE_SHIFT)) 324 if (iomem_is_exclusive(pagenr << PAGE_SHIFT))
325 return 0; 325 return 0;