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Re: [PATCH v2 1/3] hvc_xen: add earlycon support

From Boris Ostrovsky <boris.ostrovsky@oracle.com>
Newsgroups linux.kernel
Subject Re: [PATCH v2 1/3] hvc_xen: add earlycon support
Date 2016-02-25 16:10 +0100
Message-ID <r65Ie-5F8-27@gated-at.bofh.it> (permalink)
References <r62U2-3BH-11@gated-at.bofh.it> <r633H-3FK-11@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 02/25/2016 07:10 AM, Stefano Stabellini wrote:
> Introduce EARLYCON support in hvc_xen, useful for early debugging on arm
> and arm64, where xen early_printk is not available.
>
> It is different from xenboot_write_console on x86 in two ways:
>
> - it does not return if !xen_pv_domain(), not only because ARM guests
>    are xen_hvm_domain(), but also because we want to capture all the
>    early boot messages, before xen support is discovered
> - it does not try to print to the domU console at all, because xen
>    support will only be discovered at a later point
>
> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>

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[PATCH v2 0/3] hvc_xen: fix xenboot on x86 and export to ARM Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2016-02-25 13:10 +0100
  [PATCH v2 3/3] hvc_xen: make early_printk work with HVM guests Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2016-02-25 13:20 +0100
    Re: [PATCH v2 3/3] hvc_xen: make early_printk work with HVM guests Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2016-02-25 16:20 +0100
  [PATCH v2 2/3] hvc_xen: fix xenboot for DomUs Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2016-02-25 13:20 +0100
    Re: [PATCH v2 2/3] hvc_xen: fix xenboot for DomUs Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2016-02-25 16:10 +0100
      Re: [PATCH v2 2/3] hvc_xen: fix xenboot for DomUs Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2016-02-26 16:50 +0100
        Re: [PATCH v2 2/3] hvc_xen: fix xenboot for DomUs Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2016-02-26 17:10 +0100
          Re: [PATCH v2 2/3] hvc_xen: fix xenboot for DomUs Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2016-02-26 18:00 +0100
  [PATCH v2 1/3] hvc_xen: add earlycon support Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2016-02-25 13:20 +0100
    Re: [PATCH v2 1/3] hvc_xen: add earlycon support Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2016-02-25 16:10 +0100
  Re: [PATCH v2 0/3] hvc_xen: fix xenboot on x86 and export to ARM Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2016-02-26 15:30 +0100
    Re: [PATCH v2 0/3] hvc_xen: fix xenboot on x86 and export to ARM David Vrabel <david.vrabel@citrix.com> - 2016-02-26 15:50 +0100

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