On 02/07/2014 10:01 AM, James Harrison wrote: > Hi. > Thanks for the quick reply. > > So what architecture does Red Hat compile its kernels for? Having compiled the Linux Kernel, you must specify target architecture. Is there now a "general cpu" option? > > For specific CPU features like virtualisation flags, how do kernels know to report the correct CPU features? Is there a Red Hat patch? > > The virtualization flags are identified during system boot; they are exposed by cpuid calls to the processor. The kernel contains code that identifies the features and there is code in the kernel that enables these features. See the kernel's arch/x86/include/asm/cpufeature.h for more details. P. _______________________________________________ kernel mailing list kernel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/kernel
