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Re: [Xen-devel] [PATCH 2/2] Allow kdump with crash_kexec_post_notifiers

To: "David Vrabel" <david.vrabel@xxxxxxxxxx>, "Petr Tesarik" <PTesarik@xxxxxxxx>

From: "Jan Beulich" <JBeulich@xxxxxxxx>

Date: Mon, 01 Aug 2016 05:55:01 -0600

Cc: Juergen Gross <JGross@xxxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, "maintainer:X86 ARCHITECTURE 32-BIT AND64-BIT" <x86@xxxxxxxxxx>, "open list:KEXEC" <kexec@xxxxxxxxxxxxxxxxxxx>, JoshTriplett <josh@xxxxxxxxxxxxxxxx>, open list <linux-kernel@xxxxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Eric Biederman <ebiederm@xxxxxxxxxxxx>, "H.Peter Anvin" <hpa@xxxxxxxxx>, "moderated list:XEN HYPERVISOR INTERFACE" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, ThomasGleixner <tglx@xxxxxxxxxxxxx>, "Paul E. McKenney" <paulmck@xxxxxxxxxxxxxxxxxx>, Dave Young <dyoung@xxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>

Delivery-date: Mon, 01 Aug 2016 11:55:26 +0000

List-id: Xen developer discussion <xen-devel.lists.xen.org>

>>> On 13.07.16 at 14:53, <david.vrabel@xxxxxxxxxx> wrote: > On 13/07/16 13:20, Petr Tesarik wrote: >> If a crash kernel is loaded, do not crash the running domain. This is >> needed if the kernel is loaded with crash_kexec_post_notifiers, because >> panic notifiers are run before __crash_kexec() in that case, and this >> Xen hook prevents its being called later. > > Prioritising the in-kernel kexec image over the hypervisor one seems > sensible behaviour to me. For HVM guests certainly; does loading of an in-kernel crash kernel properly fail for PV guests (and namely PV Dom0), or does such a setup work nowadays? Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel

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