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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [day] [month] [year] [list]

Date:   Mon, 2 Jul 2018 13:27:55 +0200
From:   Juergen Gross <jgross@...e.com>
To:     Jan Beulich <JBeulich@...e.com>
Cc:     the arch/x86 maintainers <x86@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        xen-devel <xen-devel@...ts.xenproject.org>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>, mingo@...hat.com,
        lkml <linux-kernel@...r.kernel.org>, stable@...r.kernel.org,
        "H. Peter Anvin" <hpa@...or.com>
Subject: Re: [Xen-devel] [PATCH] xen: setup pv irq ops vector earlier

On 02/07/18 13:18, Jan Beulich wrote:
>>>> 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.

Seems as if it would be a good idea to move calling
xen_setup_machphys_mapping() into xen_init_mmu_ops(). There is really
no need to do it earlier.


Juergen