From: Cyrill Gorcunov <gorcunov@openvz.org>
To: Pekka Enberg <penberg@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>,
Sasha Levin <levinsasha928@gmail.com>,
asias.hejun@gmail.com, mingo@elte.hu, kvm@vger.kernel.org
Subject: Re: [PATCH 5/7] kvm tools: enable LTO
Date: Thu, 30 Aug 2012 12:22:17 +0400 [thread overview]
Message-ID: <20120830082217.GG21422@moon> (raw)
In-Reply-To: <20120830081654.GA3741@gmail.com>
On Thu, Aug 30, 2012 at 10:16:54AM +0200, Ingo Molnar wrote:
>
> * Pekka Enberg <penberg@kernel.org> wrote:
>
> > On Thu, Aug 30, 2012 at 10:36 AM, Sasha Levin <levinsasha928@gmail.com> wrote:
> > > Build with -flto set, which should enable link-time-optimizations.
> > >
> > > I'm not sure if it provides a significant performance increase, but
> > > it's probably just worth it for catching issues which it may cause.
> > >
> > > Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
> >
> > Ingo, any objections to this?
>
> No objections if you can live with a 2x-4x increase in build
> time - at worst it might cause funnies with the BIOS linker
> script and such.
Maybe we could enable it via some make option?
Say make LTO=1 or something?
Cyrill
next prev parent reply other threads:[~2012-08-30 8:22 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-30 7:36 [PATCH 1/7] kvm tools: add HOME env var to hostfs Sasha Levin
2012-08-30 7:36 ` [PATCH 2/7] kvm tools: clean garbage from ioeventfd code Sasha Levin
2012-08-30 7:36 ` [PATCH 3/7] kvm tools: Use the new KVM_SIGNAL_MSI ioctl to inject interrupts directly Sasha Levin
2012-08-30 7:36 ` [PATCH 4/7] kvm tools: fix warnings in virtio-blk Sasha Levin
2012-08-30 7:36 ` [PATCH 5/7] kvm tools: enable LTO Sasha Levin
2012-08-30 8:01 ` Pekka Enberg
2012-08-30 8:16 ` Ingo Molnar
2012-08-30 8:22 ` Cyrill Gorcunov [this message]
2012-08-30 8:33 ` Sasha Levin
2012-08-30 8:35 ` Cyrill Gorcunov
2012-08-30 9:12 ` Pekka Enberg
2012-08-30 7:36 ` [PATCH 6/7] kvm tools: 9p don't nuke fids on attach Sasha Levin
2012-08-30 7:36 ` [PATCH 7/7] kvm tools: simplify virtio config handling Sasha Levin
2012-08-30 7:50 ` [PATCH 1/7] kvm tools: add HOME env var to hostfs Cyrill Gorcunov
2012-08-30 9:44 ` Sasha Levin
2012-08-30 9:48 ` Pekka Enberg
2012-08-30 9:51 ` Sasha Levin
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