Messages in this thread | | | Date | Tue, 22 Jan 2019 14:40:15 +0100 | From | Borislav Petkov <> | Subject | Re: [PATCH 05/22] x86/fpu: Remove fpu->initialized usage in copy_fpstate_to_sigframe() |
| |
On Mon, Jan 21, 2019 at 12:21:17PM +0100, Oleg Nesterov wrote: > And in any case I do not understand the idea to use the second > in-kernel struct fpu. A signal handler can be interrupted by another > signal, this will need to save/restore the FPU state again.
Well, we were just speculating whether doing that would simplify the code around get_sigframe() et al. But if that is an ABI, then we can't really touch it.
Btw, where is that whole ABI deal about saving FPU regs on the user signal stack documented?
Thx.
-- Regards/Gruss, Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
| |