diff options
Diffstat (limited to 'arch/x86/Kconfig')
| -rw-r--r-- | arch/x86/Kconfig | 68 |
1 files changed, 33 insertions, 35 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index e0edaaa6920a..7dc46ba26fbf 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -251,7 +251,7 @@ config X86_ELAN config X86_VOYAGER bool "Voyager (NCR)" - depends on X86_32 && (SMP || BROKEN) + depends on X86_32 && (SMP || BROKEN) && !PCI help Voyager is an MCA-based 32-way capable SMP architecture proprietary to NCR Corp. Machine classes 345x/35xx/4100/51xx are Voyager-based. @@ -263,7 +263,7 @@ config X86_VOYAGER config X86_NUMAQ bool "NUMAQ (IBM/Sequent)" - depends on SMP && X86_32 + depends on SMP && X86_32 && PCI select NUMA help This option is used for getting Linux to run on a (IBM/Sequent) NUMA @@ -293,7 +293,7 @@ config X86_BIGSMP config X86_VISWS bool "SGI 320/540 (Visual Workstation)" - depends on X86_32 + depends on X86_32 && !PCI help The SGI Visual Workstation series is an IA32-based workstation based on SGI systems chips with some legacy PC hardware attached. @@ -337,7 +337,7 @@ config X86_RDC321X config X86_VSMP bool "Support for ScaleMP vSMP" select PARAVIRT - depends on X86_64 + depends on X86_64 && !PCI help Support for ScaleMP vSMP systems. Say 'Y' here if this kernel is supposed to run on these EM64T-based machines. Only choose this option @@ -417,35 +417,19 @@ config PARAVIRT_CLOCK endif -config MEMTEST_BOOTPARAM - bool "Memtest boot parameter" +config MEMTEST + bool "Memtest" depends on X86_64 default y help This option adds a kernel parameter 'memtest', which allows memtest - to be disabled at boot. If this option is selected, memtest - functionality can be disabled with memtest=0 on the kernel - command line. The purpose of this option is to allow a single - kernel image to be distributed with memtest built in, but not - necessarily enabled. - + to be set. + memtest=0, mean disabled; -- default + memtest=1, mean do 1 test pattern; + ... + memtest=4, mean do 4 test patterns. If you are unsure how to answer this question, answer Y. -config MEMTEST_BOOTPARAM_VALUE - int "Memtest boot parameter default value (0-4)" - depends on MEMTEST_BOOTPARAM - range 0 4 - default 0 - help - This option sets the default value for the kernel parameter - 'memtest', which allows memtest to be disabled at boot. If this - option is set to 0 (zero), the memtest kernel parameter will - default to 0, disabling memtest at bootup. If this option is - set to 4, the memtest kernel parameter will default to 4, - enabling memtest at bootup, and use that as pattern number. - - If you are unsure how to answer this question, answer 0. - config ACPI_SRAT def_bool y depends on X86_32 && ACPI && NUMA && (X86_SUMMIT || X86_GENERICARCH) @@ -549,6 +533,21 @@ config CALGARY_IOMMU_ENABLED_BY_DEFAULT Calgary anyway, pass 'iommu=calgary' on the kernel command line. If unsure, say Y. +config AMD_IOMMU + bool "AMD IOMMU support" + select SWIOTLB + depends on X86_64 && PCI && ACPI + help + With this option you can enable support for AMD IOMMU hardware in + your system. An IOMMU is a hardware component which provides + remapping of DMA memory accesses from devices. With an AMD IOMMU you + can isolate the the DMA memory of different devices and protect the + system from misbehaving device drivers or hardware. + + You can find out if your system has an AMD IOMMU if you look into + your BIOS for an option to enable it or if you have an IVRS ACPI + table. + # need this always selected by IOMMU for the VIA workaround config SWIOTLB bool @@ -563,18 +562,18 @@ config IOMMU_HELPER def_bool (CALGARY_IOMMU || GART_IOMMU || SWIOTLB) config NR_CPUS - int "Maximum number of CPUs (2-255)" - range 2 255 + int "Maximum number of CPUs (2-4096)" + range 2 4096 depends on SMP default "32" if X86_NUMAQ || X86_SUMMIT || X86_BIGSMP || X86_ES7000 default "8" help This allows you to specify the maximum number of CPUs which this - kernel will support. The maximum supported value is 255 and the + kernel will support. The maximum supported value is 4096 and the minimum value which makes sense is 2. This is purely to save memory - each supported CPU adds - approximately eight kilobytes to the kernel image. + approximately one kilobyte to the kernel image. config SCHED_SMT bool "SMT (Hyperthreading) scheduler support" @@ -966,8 +965,8 @@ config NUMA_EMU number of nodes. This is only useful for debugging. config NODES_SHIFT - int "Max num nodes shift(1-15)" - range 1 15 if X86_64 + int "Max num nodes shift(1-9)" + range 1 9 if X86_64 default "6" if X86_64 default "4" if X86_NUMAQ default "3" @@ -1475,8 +1474,7 @@ endmenu menu "Bus options (PCI etc.)" config PCI - bool "PCI support" if !X86_VISWS && !X86_VSMP - depends on !X86_VOYAGER + bool "PCI support" default y select ARCH_SUPPORTS_MSI if (X86_LOCAL_APIC && X86_IO_APIC) help |