From: Daniel Gryniewicz <dang@gentoo.org>
To: user-mode-linux-devel@lists.sourceforge.net
Subject: Re: [uml-devel] [uml-user] UML 2.6.17 problems (section mismatch, get_skas_faultinfo : failed to wait for SIGUSR1/SIGTRAP)
Date: Thu, 06 Jul 2006 22:22:21 -0400 [thread overview]
Message-ID: <1152238941.13247.67.camel@athena.fprintf.net> (raw)
In-Reply-To: <20060707004552.GC8756@ccure.user-mode-linux.org>
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On Thu, 2006-07-06 at 20:45 -0400, Jeff Dike wrote:
> On Sat, Jul 01, 2006 at 08:38:20AM +0800, Miao Qingjun wrote:
> > 082c90c8 <stub_segv_handler>:
> ...
> > 82c9102: e8 93 ae db ff call 8083f9a <stub_syscall0>
> ...
> > 82c9120: e8 57 ae db ff call 8083f7c <stub_syscall2>
>
> I guess we should consider a no-O2 compilation to be a case of "it
> hurts, so don't do it".
>
> What happened here is that two functions which absolutely have to be
> inlined (because this code is mapped into UML processes with no other
> UML code, so it must be self-contained) weren't.
>
> It should be possible to detect O2 or greater optimization and fail
> the build if it's not there. But that assumes that we know that
> non-O2 won't inline stuff, which may not always be true. Hmmmm
Isn't this what CONFIG_FORCE_INLINING is supposed to do? Granted, it
appears to only work for gcc4, but...
Daniel
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next prev parent reply other threads:[~2006-07-07 2:22 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-30 7:50 [uml-devel] UML 2.6.17 problems (section mismatch, get_skas_faultinfo : failed to wait for SIGUSR1/SIGTRAP) Miao Qingjun
2006-06-30 13:45 ` [uml-devel] [uml-user] " Jeff Dike
2006-07-01 0:38 ` Miao Qingjun
2006-07-07 0:45 ` Jeff Dike
2006-07-07 2:22 ` Daniel Gryniewicz [this message]
2006-07-07 3:15 ` Jeff Dike
2006-07-09 13:56 ` Blaisorblade
2006-07-09 13:47 ` [uml-devel] " Blaisorblade
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