linux-kernel - Re: [PATCH v2] xen: setup pv irq ops vector earlier

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Message-ID: <3ba34cbe-b9f8-91bb-03dc-efe5ae44991f@oracle.com>
Date:   Thu, 12 Jul 2018 13:28:46 -0400
From:   Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:     Juergen Gross <jgross@...e.com>, linux-kernel@...r.kernel.org,
        xen-devel@...ts.xenproject.org, x86@...nel.org
Cc:     hpa@...or.com, tglx@...utronix.de, mingo@...hat.com,
        stable@...r.kernel.org
Subject: Re: [PATCH v2] xen: setup pv irq ops vector earlier

On 07/12/2018 11:40 AM, Juergen Gross wrote:
> Setting pv_irq_ops for Xen PV domains should be done as early as
> possible in order to support e.g. very early printk() usage.
>
> The same applies to xen_vcpu_info_reset(0), as it is needed for the
> pv irq ops.
>
> Move the call of xen_setup_machphys_mapping() after initializing the
> pv functions as it contains a WARN_ON(), too.
>
> Remove the no longer necessary conditional in xen_init_irq_ops()
> from PVH V1 times to make clear this is a PV only function.
>
> Cc: <stable@...r.kernel.org> # 4.14
> Signed-off-by: Juergen Gross <jgross@...e.com>

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