On 03/04/2016 10:12 AM, Yu-cheng Yu wrote:
> + if (boot_cpu_has(X86_FEATURE_XSAVES)) {
> + ret = copyout_from_xsaves(pos, count, kbuf, ubuf, xsave);On a higher level, we really should stop using "boot_cpu_has(X86_FEATURE_XSAVES)" as a proxy for "the kernel XSAVE buffer is in the XSAVES format". I think our use of the _hardware_ CPUID bit is confusing at least the KVM folks. We probably want a software X86_FEATURE_OS_XSAVES or something.
