![]() It also supports all 64-bit server / desktop class CPUs like the G5, POWER4 and above, Cell, 970MP, and 32-bit desktop class CPUs like the G3, G4, e300, etc.Įvery S390 that has 64-bit support can use KVM. If the VMX flag is returned then your processor supports INTEL-VT. For Intel VT-x: cat /proc/cpuinfo flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat. flag is returned then your processor supports AMD-V. KVM for PowerPC supports selected embedded cores. You must see either the vmx or the svm flag. Virtualization support for ARM was initially added to ARMv7-A processors starting with Cortex-A15 and including Cortex-A7 and Cortex-A17.ĪRMv8-A processors include support for virtualization. cat /proc/cpuinfo grep flags flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constanttsc archperfmon pebs bts repgood xtopology nonstoptsc aperfmperf pni dtes64 monitor dscpl vmx est tm2 ssse3 cx16 xtpr pdcm sse41 sse42 popcnt lahflm. See Wikipedia's article on x86 virtualization,įor a list of processors that include it.ĪMD-V, shows in /proc/cpuinfo as the svm flag. In order to ensure safe migration and maintain compatibility with external repositories, it is recommended to preserve the old USE settings for a period of one year or until no package of interest is still using them.VT-x, shows in /proc/cpuinfo as the vmx flag. ![]() info in C code, then Im fine with just parsing /proc/cpuinfo. Can you check /proc/cpuinfo flags for your cpu I believe one of the listed features is missing (probably CMPXCHG16B) cpuinfo: processor : 0 vendorid : GenuineIntel cpu family : 6 model : 23 model name : Intel(R) Xeon(R) CPU L5420 2.50GHz stepping : 10 microcode : 0xa0b cpu MHz : 2477.639 cache size : 6144 KB physical id : 0 siblings : 4. Root # emerge -1v app-portage/cpuinfo2cpuflags user $ cpuinfo2cpuflags-x86 /proc/cpuinfo exposes CPU feature flags like SSE2. It can be found in the No results package: no fpu : yes fpuexception : yes cpuid level : 1 wp : yes flags : fpu vme de. To help users enable the correct USE flags, we are providing a Python script that generates the correct value using /proc/cpuinfo. Here is a chance for Linux users to easily compare Linux CPU info and some. Most of the flag names match /proc/cpuinfo names, with the notable exception of SSE3 which is called 'pni' in /proc/cpuinfo (please also do not confuse it with distinct SSSE3). When in doubt, you can consult the flag descriptions using one of the commonly available tools, e.g. Hyper-Threading may help some threaded applications. Please note that the same CPU_FLAGS_X86 variable is used both on 32-bit and 64-bit x86 (amd64) systems. You can tell that Hyper-Threading is enabled by the ht flag in the flags field of /proc/cpuinfo. In such cases, you should check your BIOS settings to enable VT support. flags Defines a number of different processor attributes, such as the presence of a floating-point unit (FPU) and the ability to process MMX instructions. See Wikipedias article on x86 virtualization, for a list of. In some CPU models, the VT support might be disabled in the BIOS, by default. INTEL: VT-x, shows in /proc/cpuinfo as the vmx flag. This accepts physical cpu numbers as shown in the processor fields of /proc. Please note that these CPU flags (vmx or svm) in the /proc/cpuinfo file indicates that your system will support VT. etc/portage/nf - The new nf flags CPU_FLAGS_X86="mmx mmxext sse sse2 sse3" l Allocates memory from the local node of the cpu.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |