RE: Ping: [PATCH v2] x86-64: fix ZMM register state tracking

["Metzger, Markus T" <markus.t.metzger@intel.com>]

> >>> On 07.11.18 at 10:07, <markus.t.metzger@intel.com> wrote:
> >>  On 2018-10-29 06:31, Jan Beulich wrote:
> >> >>>> On 10.10.18 at 17:12,  wrote:
> >> >> The three AVX512 state components are entirely independent - one
> >> >> being in its "init state" has no implication whatsoever on either
> >> >> of the other two. Fully separate X86_XSTATE_ZMM_H and
> >> >> X86_XSTATE_ZMM handling, to prevent upper halves of the upper 16
> >> >> ZMM registers to display as if they were zero (when they aren't) after e.g.
> >> >> VZEROALL/VZEROUPPER.
> >> >>
> >> >> gdb/
> >> >> 2018-10-10  Jan Beulich  <jbeulich@suse.com>
> >> >>
> >> >> 	* i387-tdep.c (i387_supply_xsave): Split handling of
> >> >> 	X86_XSTATE_ZMM_H and X86_XSTATE_ZMM.
> >> >> 	(i387_collect_xsave): Likewise.
> >> >>
> >> >> gdb/testsuite/
> >> >> 2018-10-10  Simon Marchi <simon.marchi@polymtl.ca>
> >> >>
> >> >> 	* testsuite/gdb.arch/i386-avx512.c,
> >> >> 	testsuite/gdb.arch/i386-avx512.exp: Add 7th test.
> >> >>
> >> >> ---
> >> >> v2: Attach comments to zmm_endlo_regnum declarations. Add testcase
> >> >>     provided by Simon.
> >>
> >> The testcase obviously LGTM.  I will let Markus approve the other changes.
> >
> > The code already looked good to me in v1.  Thanks for adding comments.
> 
> So can I translate this into an ack for me to commit the change?
> Or else, who would be the one to give the go-ahead?

Simon can approve your patch.

IIRC Pedro had a question regarding gdbserver.  From a first look, it seems to get the
feature bits right but does not distinguish 32-bit and 64-bit mode regarding the number
of available registers.

Did you run the new test you added also in remote configuration?

Markus.

Intel Deutschland GmbH
Registered Address: Am Campeon 10-12, 85579 Neubiberg, Germany
Tel: +49 89 99 8853-0, www.intel.de
Managing Directors: Christin Eisenschmid, Christian Lamprechter
Chairperson of the Supervisory Board: Nicole Lau
Registered Office: Munich
Commercial Register: Amtsgericht Muenchen HRB 186928