Re: RFC: partially available registers

Tom Tromey
2011-07-26T19:20:26Z

>>>>> "Pedro" == Pedro Alves <pedro@codesourcery.com> writes:

Pedro> I glanced at:
Pedro> <http://kerneltrap.org/mailarchive/linux-kernel/2010/2/10/4537101/thread>

Pedro> and now I'm not sure my last assumption with ptrace stopped tasks
Pedro> holds. If not, then we have two distinct cases to handle -- x87 state
Pedro> has never been accessed; and x87 state in the xsave memory area is
Pedro> not up to date. Is that true? Is there a way to distinguish them?
Pedro> Is that what linux puts in the SW usable bytes [464..511]?

I do not know. I think it would be best if H.J. weighed in on this.

Tom