Add cc's. On 01/11, r...@redhat.com wrote: > > Currently the kernel will always load the FPU context, even > when switching to a kernel thread, or to an idle thread. In > the case of a task on a KVM VCPU going idle for a bit, and > waking up again later, this creates a vastly inefficient > chain of FPU context saves & loads:
I assume you will send v2. Let me send initial kernel_fpu_begin/end cleanups, I believe they make sense anyway and won't conflict with your changes. This is actually resend, I sent more patches some time ago but they were ignored. Note that (I hope) we can do more changes on top of this series, in particular: - remove all checks from irq_fpu_usable() except in_kernel_fpu - do not abuse FPU in kernel threads, this makes sense even if use_eager_fpu(), and with or without the changes you proposed. Please review. Oleg. -- 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/