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From: Linus Torvalds <torvalds@linux-foundation.org>
To: namit@vmware.com
Cc: Peter Anvin <hpa@zytor.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	"the arch/x86 maintainers" <x86@kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>,
	Josh Poimboeuf <jpoimboe@redhat.com>
Subject: Re: [PATCH 2/6] x86: bug: prevent gcc distortions
Date: Fri, 18 May 2018 12:11:01 -0700	[thread overview]
Message-ID: <CA+55aFysH5iiJWCVFu1J6GQfN2G1AbMcHyc4RhpnrnPjtM3L0Q@mail.gmail.com> (raw)
In-Reply-To: <6A3E90AA-7838-4C2A-B628-908F34902B75@vmware.com>

On Fri, May 18, 2018 at 12:02 PM Nadav Amit <namit@vmware.com> wrote:

> I can add a -Wa,[filename.s] switch. It works, but sort of undocumented.

Oh, if it assembles things together, then that sounds optimal.

And yes, like hpa says, we should make sure that behavior is acknowledged
by the GNU as people, so that they then don't come back and say "hey, now
we assemble things as separate units".

That said, the "separate units" model really doesn't make much sense now
that I think about it, because 'as' supports only one output file. So I
guess the as people wouldn't have any issues with just accepting the
"concatenate all input files" syntax.

              Linus

  parent reply	other threads:[~2018-05-18 19:11 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-17 16:13 [PATCH 0/6] Macrofying inline assembly for better compilation Nadav Amit
2018-05-17 16:13 ` Nadav Amit
2018-05-17 16:13 ` [PATCH 1/6] x86: objtool: use asm macro for better compiler decisions Nadav Amit
2018-05-17 16:13   ` Nadav Amit
2018-05-17 16:13 ` [PATCH 2/6] x86: bug: prevent gcc distortions Nadav Amit
2018-05-18  7:58   ` Peter Zijlstra
2018-05-18  8:13     ` Ingo Molnar
2018-05-18 10:11       ` Borislav Petkov
2018-05-18 14:36         ` Nadav Amit
2018-05-18 15:40           ` Borislav Petkov
2018-05-18 15:46             ` Nadav Amit
2018-05-18 15:53               ` Borislav Petkov
2018-05-18 16:29                 ` Nadav Amit
2018-05-18 17:41                   ` Boris Petkov
2018-05-18 14:30       ` Nadav Amit
2018-05-18 14:22     ` Nadav Amit
2018-05-18 17:52       ` Joe Perches
2018-05-18 16:24     ` Linus Torvalds
2018-05-18 17:24       ` Nadav Amit
2018-05-18 18:25         ` Linus Torvalds
2018-05-18 18:33           ` hpa
2018-05-18 18:50             ` Linus Torvalds
2018-05-18 18:53               ` hpa
2018-05-18 19:02                 ` Nadav Amit
2018-05-18 19:05                   ` hpa
2018-05-18 19:11                   ` Linus Torvalds [this message]
2018-05-18 19:18                     ` Nadav Amit
2018-05-18 19:21                       ` Linus Torvalds
2018-05-18 19:22                         ` hpa
2018-05-18 19:36                           ` Nadav Amit
2018-05-18 19:41                             ` hpa
2018-05-17 16:13 ` [PATCH 3/6] x86: alternative: macrofy locks for better inlining Nadav Amit
2018-05-17 16:14 ` [PATCH 4/6] x86: prevent inline distortion by paravirt ops Nadav Amit
2018-05-17 16:14 ` [PATCH 5/6] x86: refcount: prevent gcc distortions Nadav Amit
2018-05-19  4:27   ` kbuild test robot
2018-05-17 16:14 ` [PATCH 6/6] x86: removing unneeded new-lines Nadav Amit
2018-05-18  9:20 ` [PATCH 0/6] Macrofying inline assembly for better compilation David Laight
2018-05-18  9:20 ` David Laight
2018-05-18 14:15   ` Nadav Amit

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