x86: Add quirk for reboot stalls on a Dell Optiplex 360

[pandora-kernel.git] / arch / x86 / Kconfig

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index ed92864..d0561fe 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -123,6 +123,9 @@ config GENERIC_TIME_VSYSCALL
 config ARCH_HAS_CPU_RELAX
        def_bool y
 
+config ARCH_HAS_DEFAULT_IDLE
+       def_bool y
+
 config ARCH_HAS_CACHE_LINE_SIZE
        def_bool y
 
@@ -567,7 +570,7 @@ config AMD_IOMMU
 
 # need this always selected by IOMMU for the VIA workaround
 config SWIOTLB
-       bool
+       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
@@ -1059,6 +1062,26 @@ config HIGHPTE
          low memory.  Setting this option will put user-space page table
          entries in high memory.
 
+config X86_RESERVE_LOW_64K
+        bool "Reserve low 64K of RAM on AMI/Phoenix BIOSen"
+       default y
+       help
+        Reserve the first 64K of physical RAM on BIOSes that are known
+        to potentially corrupt that memory range. A numbers of BIOSes are
+        known to utilize this area during suspend/resume, so it must not
+        be used by the kernel.
+
+        Set this to N if you are absolutely sure that you trust the BIOS
+        to get all its memory reservations and usages right.
+
+        If you have doubts about the BIOS (e.g. suspend/resume does not
+        work or there's kernel crashes after certain hardware hotplug
+        events) and it's not AMI or Phoenix, then you might want to enable
+        X86_CHECK_BIOS_CORRUPTION=y to allow the kernel to check typical
+        corruption patterns.
+
+        Say Y if unsure.
+
 config MATH_EMULATION
        bool
        prompt "Math emulation" if X86_32