From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
To: Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
xen-devel@lists.xensource.com
Cc: linux-kernel@vger.kernel.org, david.vrabel@citrix.com,
konrad.wilk@oracle.com
Subject: Re: [PATCH v2 1/3] hvc_xen: add earlycon support
Date: Thu, 25 Feb 2016 10:00:12 -0500 [thread overview]
Message-ID: <56CF16FC.6050609@oracle.com> (raw)
In-Reply-To: <1456402239-4179-1-git-send-email-stefano.stabellini@eu.citrix.com>
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>
next prev parent reply other threads:[~2016-02-25 15:00 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-25 12:09 [PATCH v2 0/3] hvc_xen: fix xenboot on x86 and export to ARM Stefano Stabellini
2016-02-25 12:09 ` Stefano Stabellini
2016-02-25 12:10 ` [PATCH v2 1/3] hvc_xen: add earlycon support Stefano Stabellini
2016-02-25 12:10 ` Stefano Stabellini
2016-02-25 15:00 ` Boris Ostrovsky [this message]
2016-02-25 12:10 ` [PATCH v2 2/3] hvc_xen: fix xenboot for DomUs Stefano Stabellini
2016-02-25 12:10 ` Stefano Stabellini
2016-02-25 15:04 ` Boris Ostrovsky
2016-02-26 15:39 ` Stefano Stabellini
2016-02-26 15:39 ` Stefano Stabellini
2016-02-26 16:09 ` Boris Ostrovsky
2016-02-26 16:57 ` Stefano Stabellini
2016-02-26 16:57 ` Stefano Stabellini
2016-02-25 12:10 ` [PATCH v2 3/3] hvc_xen: make early_printk work with HVM guests Stefano Stabellini
2016-02-25 12:10 ` Stefano Stabellini
2016-02-25 15:13 ` Boris Ostrovsky
2016-02-26 14:28 ` [PATCH v2 0/3] hvc_xen: fix xenboot on x86 and export to ARM Stefano Stabellini
2016-02-26 14:28 ` Stefano Stabellini
2016-02-26 14:41 ` David Vrabel
2016-02-26 14:41 ` David Vrabel
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