linux-kernel - Re: [uml-devel] [PATCH] checkstack: use $UTS

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Message-ID: <53BBB4AF.1080507@nod.at>
Date:	Tue, 08 Jul 2014 11:06:55 +0200
From:	Richard Weinberger <richard@....at>
To:	Konstantin Khlebnikov <koct9i@...il.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	"x86@...nel.org" <x86@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	UML devel <user-mode-linux-devel@...ts.sourceforge.net>,
	linux-kbuild <linux-kbuild@...r.kernel.org>
Subject: Re: [uml-devel] [PATCH] checkstack: use $UTS_MACHINE as target architecture

Am 08.07.2014 11:03, schrieb Konstantin Khlebnikov:
> I know. But debugging/profiling of kernel code is much easier when it
> runs in userspace.
> I think this is the last use case where uml might beat normal hardware
> accelerated qemu/kvm.
> But without SMP and with that high overhead on each syscall and
> context/mm switch it's mostly useless.

The major use case of UML is that you can run it on hardware without
KVM support.
Everyone else is using KVM.

Thanks,
//richard
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