[GIT PULL] x86 fixes

Ingo Molnar
2012-09-21T19:15:36Z

Linus,

Please pull the latest x86-urgent-for-linus git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-urgent-for-linus

HEAD: 73e8f3d7e2cb23614d5115703d76d8e54764b641 x86/mm/init.c: Fix devmem_is_allowed() off by one

Small fixlets.

Thanks,

Ingo

------------------>
Joe Millenbach (1):
x86/kconfig: Remove outdated reference to Intel CPUs in CONFIG_SWIOTLB

T Makphaibulchoke (1):
x86/mm/init.c: Fix devmem_is_allowed() off by one

arch/x86/Kconfig | 8 ++++----
arch/x86/mm/init.c | 2 +-
2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 8ec3a1a..50a1d1f 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -746,10 +746,10 @@ config SWIOTLB
def_bool y if X86_64
---help---
Support for software bounce buffers used on x86-64 systems
- which don't have a hardware IOMMU (e.g. the current generation
- of Intel's x86-64 CPUs). Using this PCI devices which can only
- access 32-bits of memory can be used on systems with more than
- 3 GB of memory. If unsure, say Y.
+ which don't have a hardware IOMMU. Using this PCI devices
+ which can only access 32-bits of memory can be used on systems
+ with more than 3 GB of memory.
+ If unsure, say Y.

config IOMMU_HELPER
def_bool (CALGARY_IOMMU || GART_IOMMU || SWIOTLB || AMD_IOMMU)
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index e0e6990..ab1f6a9 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,
*/
int devmem_is_allowed(unsigned long pagenr)
{
- if (pagenr <= 256)
+ if (pagenr < 256)
return 1;
if (iomem_is_exclusive(pagenr << PAGE_SHIFT))
return 0;