On 05/28/2015 01:41 AM, Ingo Molnar wrote: > What you want here is to make the (in-memory) FPU state valid and current, > before > reading it, and the function to use for that is fpu__activate_fpstate_read() > (available in the latest tip:x86/fpu tree).
Do we really want to unconditionally activate the FPU? Let's say supporting MPX didn't require eager mode and someone called get_xsave_addr(). We would ideally want to keep the FPU inactive and just return NULL. Right? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
