diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-09-21 17:26:23 -0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-09-21 17:26:23 -0400 |
commit | 9d10890792a96ed796a44565924327aa276fa468 (patch) | |
tree | 94e3aa53d8ad06f2867e1f939d981d518d92ac0a /arch | |
parent | 519b3b742d7d29c3386f0f35f3cee5dd362dd8e2 (diff) | |
parent | 73e8f3d7e2cb23614d5115703d76d8e54764b641 (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x86/kconfig: Remove outdated reference to Intel CPUs in CONFIG_SWIOTLB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/Kconfig | 8 | ||||
-rw-r--r-- | arch/x86/mm/init.c | 2 |
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 | ||
754 | config IOMMU_HELPER | 754 | config 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 | */ |
320 | int devmem_is_allowed(unsigned long pagenr) | 320 | int 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; |