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Date: Mon, 22 Jul 2013 11:24:46 -0700 From: "H. Peter Anvin" <hpa@...or.com> To: "Eric W. Biederman" <ebiederm@...ssion.com> CC: Daniel Kiper <daniel.kiper@...cle.com>, Greg KH <gregkh@...uxfoundation.org>, Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>, linux-kernel@...r.kernel.org, Brandon Philips <brandon@...p.org>, xen-devel@...ts.xensource.com, virtualization@...ts.linux-foundation.org Subject: Re: is kexec on Xen domU possible? On 07/22/2013 10:20 AM, Eric W. Biederman wrote: >>> >>> Also, in any virtualized environment the hypervisor can do a better job >>> for things like kdump, simply because it can provide two things that are >>> otherwise hard to do: >>> >>> 1. a known-good system state; >>> 2. a known-clean kdump image. >>> >>> As such, I do encourage the virtualization people to (also) develop >>> hypervisor-*aware* solutions for these kinds of things. >> >> In general I agree but if you could not change hypervisor >> and/or dom0 (e.g. you are using cloud providers which are >> stick to old versions of Xen) then you have no choice. > > Which tends to be where kexec on panic comes in most cases. Getting > platform vendors to do something sane tends to be a multi-year political > effort of dubious worth while just solving the problem locally actually > gets the problem solved for those who care. > It should not be a "one or the other" issue. -hpa -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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