From: "Jan Beulich" <JBeulich@suse.com>
To: "Pedro Alves" <palves@redhat.com>
Cc: "GDB" <gdb-patches@sourceware.org>
Subject: Re: [PATCH] x86-64: fix ZMM register state tracking
Date: Tue, 11 Sep 2018 11:34:00 -0000 [thread overview]
Message-ID: <5B97A85002000078001E7337@prv1-mh.provo.novell.com> (raw)
In-Reply-To: <d724324b-fbe3-1cf7-3e17-4c34c1c88889@redhat.com>
>>> On 11.09.18 at 12:34, <palves@redhat.com> wrote:
> On 09/05/2018 02:22 PM, Jan Beulich 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/
>> 2018-09-05 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.
>
> Does gdb/gdbserver/i387-fp.c need similar treatment?
Not afaics - there's no place where both flags would be tested at
the same time (other than was the case here before this patch).
Jan
next prev parent reply other threads:[~2018-09-11 11:34 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-05 13:23 Jan Beulich
2018-09-07 23:13 ` Simon Marchi
2018-09-10 6:25 ` Jan Beulich
2018-09-10 13:01 ` Simon Marchi
2018-09-18 13:38 ` Jan Beulich
2018-09-25 3:29 ` Simon Marchi
2018-09-25 15:04 ` Jan Beulich
2018-10-02 19:20 ` Simon Marchi
2018-10-03 14:30 ` Jan Beulich
2018-10-03 14:41 ` Simon Marchi
2018-09-11 10:34 ` Pedro Alves
2018-09-11 11:34 ` Jan Beulich [this message]
2018-09-24 17:19 ` Metzger, Markus T
2018-09-25 7:47 ` Jan Beulich
2018-10-10 15:12 ` [PATCH v2] " Jan Beulich
2018-10-29 10:31 ` Ping: " Jan Beulich
2018-10-31 14:00 ` Simon Marchi
2018-11-07 9:07 ` Metzger, Markus T
2018-11-07 9:12 ` Jan Beulich
2018-11-07 13:18 ` Metzger, Markus T
2018-11-07 13:25 ` Jan Beulich
2018-11-07 14:18 ` Simon Marchi
2018-11-08 11:16 ` Jan Beulich
2018-11-08 16:24 ` Simon Marchi
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