Date: Fri, 21 Jan 2011 07:40:42 -0800 From: Matthew Jacob <mj@feral.com> To: Bruce Evans <brde@optusnet.com.au> Cc: freebsd-arch@freebsd.org Subject: Re: removing -frename-registers from sys/conf.mk Message-ID: <4D39A8FA.8060406@feral.com> In-Reply-To: <20110121162202.S2816@besplex.bde.org> References: <4D38CAEE.2060705@feral.com> <4D38D49A.2010909@feral.com> <20110121162202.S2816@besplex.bde.org>
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On 1/20/2011 10:15 PM, Bruce Evans wrote: > On Thu, 20 Jan 2011, Matthew Jacob wrote: > >> Never mind this ill thought out request. >> >> On 1/20/2011 3:53 PM, Matthew Jacob wrote: >>> It helps substantially in trying to debug amd64 kernels to remove >>> this flag. >>> >>> Has anyone heard of a good reason we need to keep this? Whom else >>> should I ask? > > What's ill-thought out about it? What was ill thought out about it was that somebody at Panasas had reported that removing just this option made kernel crash dumps way easier to follow. But it turns out that they had also removed all optimizations as well (and hadn't told me). That made this a non-starter.
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