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From: Michal Marek <mmarek@suse.cz>
To: Josh Stone <jistone@redhat.com>, linux-kernel@vger.kernel.org
Cc: "Frank Ch. Eigler" <fche@redhat.com>,
	"Jakub Jelinek" <jakub@redhat.com>,
	"Josh Boyer" <jwboyer@fedoraproject.org>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Linus Torvalds" <torvalds@linux-foundation.org>,
	"Andrew Morton" <akpm@linux-foundation.org>,
	"Markus Trippelsdorf" <markus@trippelsdorf.de>,
	"Michel Dänzer" <michel@daenzer.net>
Subject: Re: [PATCH RESEND] Kbuild: Add an option to enable GCC VTA
Date: Mon, 24 Nov 2014 22:46:55 +0100	[thread overview]
Message-ID: <5473A74F.8000709@suse.cz> (raw)
In-Reply-To: <1416595200-22359-1-git-send-email-jistone@redhat.com>

Dne 21.11.2014 v 19:40 Josh Stone napsal(a):
> Due to recent codegen issues, gcc -fvar-tracking-assignments was
> unconditionally disabled in commit 2062afb4f804a ("Fix gcc-4.9.0
> miscompilation of load_balance() in scheduler").  However, this reduces
[...]
> With gcc-4.9.2-1.fc22, I can now build v3.18-rc5 with Fedora's i686 and
> x86_64 configs, and this is completely clean with GCC_COMPARE_DEBUG.

According to gcc's bug#61801, this is really fixed in 4.9.2 (commit
556537c4 in the git mirror). So how about checking for this minimal
version instead of a new Kconfig option?

thanks,
Michal

  reply	other threads:[~2014-11-24 21:47 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-21 18:40 [PATCH RESEND] Kbuild: Add an option to enable GCC VTA Josh Stone
2014-11-24 21:46 ` Michal Marek [this message]
2014-11-24 23:46   ` Josh Stone
2014-11-25 21:05     ` Michal Marek
2014-11-25 21:24       ` Josh Boyer
2015-04-23 21:25 ` [PATCH] " Frank Ch. Eigler
2015-04-24 12:40   ` Josh Boyer
2015-04-24 13:42     ` Frank Ch. Eigler

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