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

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Date:   Mon, 02 Jul 2018 05:18:02 -0600
From:   "Jan Beulich" <JBeulich@...e.com>
To:     "Juergen Gross" <jgross@...e.com>
Cc:     "the arch/x86 maintainers" <x86@...nel.org>, <tglx@...utronix.de>,
        "xen-devel" <xen-devel@...ts.xenproject.org>,
        "Boris Ostrovsky" <boris.ostrovsky@...cle.com>, <mingo@...hat.com>,
        <linux-kernel@...r.kernel.org>, <stable@...r.kernel.org>,
        <hpa@...or.com>
Subject: Re: [Xen-devel] [PATCH] xen: setup pv irq ops vector earlier

>>> On 02.07.18 at 12:00, <jgross@...e.com> wrote:
> --- a/arch/x86/xen/enlighten_pv.c
> +++ b/arch/x86/xen/enlighten_pv.c
> @@ -1213,6 +1213,7 @@ asmlinkage __visible void __init xen_start_kernel(void)
>  	pv_info = xen_info;
>  	pv_init_ops.patch = paravirt_patch_default;
>  	pv_cpu_ops = xen_cpu_ops;
> +	xen_init_irq_ops();

Isn't this still too late? xen_setup_machphys_mapping(), for example,
has a WARN_ON(), which implies multiple printk()s.

Jan