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
next prev parent 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
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