public inbox for linux-kernel@vger.kernel.org
 help / color / mirror / Atom feed
From: Ingo Molnar <mingo@kernel.org>
To: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>, "H. Peter Anvin" <hpa@zytor.com>,
	Andy Lutomirski <luto@amacapital.net>,
	Kees Cook <keescook@chromium.org>,
	x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86/math-emu: Add support for FCMOVcc and F[U]COMI[P] insns
Date: Mon, 24 Aug 2015 08:50:10 +0200	[thread overview]
Message-ID: <20150824065010.GA12982@gmail.com> (raw)
In-Reply-To: <20150824064647.GA12756@gmail.com>


* Ingo Molnar <mingo@kernel.org> wrote:

> 
> * Denys Vlasenko <dvlasenk@redhat.com> wrote:
> 
> > I propose the table to be commented like shown below:
> > 
> > /*Opcode: d8      d9        da      db       dc      dd      de      df */
> > /*c0..f*/ fadd__, fld_i_,   fcmovb, fcmovnb, fadd_i, ffree_, faddp_, _df_c0_,
> > /*c8..f*/ fmul__, fxch_i,   fcmove, fcmovne, fmul_i, _dd_c8_,fmulp_, _df_c8_,
> > /*d0..7*/ fcom_st,fp_nop,   fcmovbe,fcmovnbe,_dc_d0_,fst_i_, _de_d0_,_df_d0_,
> > /*d8..f*/ fcompst,_d9_d8_,  fcmovu, fcmovnu, _dc_d8_,fstp_i, fcompp, _df_d8_,
> > /*e0..7*/ fsub__, FPU_etc,  __BAD__,finit_,  fsubri, fucom_, fsubrp, fstsw_,
> > /*e8..f*/ fsubr_, fconst,   fucompp,fucomi_, fsub_i, fucomp, fsubp_, fucomip,
> > /*f0..7*/ fdiv__, FPU_triga,__BAD__,fcomi_,  fdivri, __BAD__,fdivrp, fcomip,
> > /*f8..f*/ fdivr_, FPU_trigb,__BAD__,__BAD__, fdiv_i, __BAD__,fdivp_, __BAD__,
> 
> I agree with that, but please fix the vertical alignment (like my patch did), as 
> the table is pretty hard to navigate in this form.

and by that I mean to split each line into two, to have groups of 4 instructions 
and enough tabs between them.

> Also, the first patch in the series should remove the 'undocumented' #ifdef. 
> That define was fully justified ~20 years ago but let's not complicate new code 
> with it.

The formerly undocumented opcodes could also grow real names.

All in nicely separate patches.

Thanks,

	Ingo

  reply	other threads:[~2015-08-24  6:50 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-08-21 10:19 [PATCH] x86/math-emu: Add support for FCMOVcc and F[U]COMI[P] insns Denys Vlasenko
2015-08-22  8:13 ` Ingo Molnar
2015-08-22  8:54 ` Ingo Molnar
2015-08-22 18:57   ` Denys Vlasenko
2015-08-23  6:15     ` Ingo Molnar
2015-08-23 15:47       ` Denys Vlasenko
2015-08-24  6:46         ` Ingo Molnar
2015-08-24  6:50           ` Ingo Molnar [this message]
2015-08-24 14:15             ` Denys Vlasenko
2015-08-25  8:36               ` Ingo Molnar

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20150824065010.GA12982@gmail.com \
    --to=mingo@kernel.org \
    --cc=bp@alien8.de \
    --cc=dvlasenk@redhat.com \
    --cc=hpa@zytor.com \
    --cc=keescook@chromium.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=luto@amacapital.net \
    --cc=x86@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox