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Re: [Xen-devel] [PATCH linux v2 0/9] xen: pvhvm: support bootup on secondary vCPUs

From David Vrabel <david.vrabel@citrix.com>
Newsgroups linux.kernel
Subject Re: [Xen-devel] [PATCH linux v2 0/9] xen: pvhvm: support bootup on secondary vCPUs
Date 2016-07-25 14:40 +0200
Message-ID <rYNkR-4yZ-5@gated-at.bofh.it> (permalink)
References <rPMxH-2YZ-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 30/06/16 16:56, Vitaly Kuznetsov wrote:
> It may happen that Xen's and Linux's ideas of vCPU id diverge. In
> particular, when we crash on a secondary vCPU we may want to do kdump
> and unlike plain kexec where we do migrate_to_reboot_cpu() we try booting
> on the vCPU which crashed. This doesn't work very well for PVHVM guests as
> we have a number of hypercalls where we pass vCPU id as a parameter. These
> hypercalls either fail or do something unexpected. To solve the issue we
> need to have a mapping between Linux's and Xen's vCPU ids.
> 
> This series solves the issue for x86 PVHVM guests. PV guests don't (and
> probably won't) support kdump so I always assume Xen's vCPU id == Linux's
> vCPU id. ARM guests will probably need to get proper mapping once we start
> supporting kexec/kdump there.

Applied to for-linus-4.8, thanks.

David

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Re: [Xen-devel] [PATCH linux v2 0/9] xen: pvhvm: support bootup on  secondary vCPUs David Vrabel <david.vrabel@citrix.com> - 2016-07-25 14:40 +0200
  Re: [Xen-devel] [PATCH linux v2 0/9] xen: pvhvm: support bootup on  secondary vCPUs Julien Grall <julien.grall@arm.com> - 2016-07-25 15:20 +0200
    Re: [Xen-devel] [PATCH linux v2 0/9] xen: pvhvm: support bootup on secondary vCPUs Vitaly Kuznetsov <vkuznets@redhat.com> - 2016-07-25 15:40 +0200
      Re: [Xen-devel] [PATCH linux v2 0/9] xen: pvhvm: support bootup on  secondary vCPUs Julien Grall <julien.grall@arm.com> - 2016-07-25 16:10 +0200
        Re: [Xen-devel] [PATCH linux v2 0/9] xen: pvhvm: support bootup on  secondary vCPUs David Vrabel <david.vrabel@citrix.com> - 2016-07-25 16:10 +0200
        Re: [Xen-devel] [PATCH linux v2 0/9] xen: pvhvm: support bootup on secondary vCPUs Vitaly Kuznetsov <vkuznets@redhat.com> - 2016-07-25 16:30 +0200
          Re: [Xen-devel] [PATCH linux v2 0/9] xen: pvhvm: support bootup on  secondary vCPUs Stefano Stabellini <sstabellini@kernel.org> - 2016-07-25 21:20 +0200
        Re: [Xen-devel] [PATCH linux v2 0/9] xen: pvhvm: support bootup on  secondary vCPUs Stefano Stabellini <sstabellini@kernel.org> - 2016-07-25 23:40 +0200
    Re: [Xen-devel] [PATCH linux v2 0/9] xen: pvhvm: support bootup on  secondary vCPUs David Vrabel <david.vrabel@citrix.com> - 2016-07-25 15:50 +0200
      Re: [Xen-devel] [PATCH linux v2 0/9] xen: pvhvm: support bootup on  secondary vCPUs Stefano Stabellini <sstabellini@kernel.org> - 2016-07-25 23:20 +0200

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