linux-kernel - Re: [tip: x86/urgent] x86/entry/32: Fix XEN

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:   Mon, 6 Jul 2020 06:15:35 +0200
From:   Jürgen Groß <jgross@...e.com>
To:     Andy Lutomirski <luto@...capital.net>, linux-kernel@...r.kernel.org
Cc:     linux-tip-commits@...r.kernel.org,
        Andy Lutomirski <luto@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>, x86 <x86@...nel.org>
Subject: Re: [tip: x86/urgent] x86/entry/32: Fix XEN_PV build dependency

On 05.07.20 22:24, Andy Lutomirski wrote:
> 
> 
>> On Jul 5, 2020, at 12:44 PM, tip-bot2 for Ingo Molnar <tip-bot2@...utronix.de> wrote:
>>
>> The following commit has been merged into the x86/urgent branch of tip:
>>
>> Commit-ID:     a4c0e91d1d65bc58f928b80ed824e10e165da22c
>> Gitweb:        https://git.kernel.org/tip/a4c0e91d1d65bc58f928b80ed824e10e165da22c
>> Author:        Ingo Molnar <mingo@...nel.org>
>> AuthorDate:    Sun, 05 Jul 2020 21:33:11 +02:00
>> Committer:     Ingo Molnar <mingo@...nel.org>
>> CommitterDate: Sun, 05 Jul 2020 21:39:23 +02:00
>>
>> x86/entry/32: Fix XEN_PV build dependency
>>
>> xenpv_exc_nmi() and xenpv_exc_debug() are only defined on 64-bit kernels,
>> but they snuck into the 32-bit build via <asm/identry.h>, causing the link
>> to fail:
>>
>>   ld: arch/x86/entry/entry_32.o: in function `asm_xenpv_exc_nmi':
>>   (.entry.text+0x817): undefined reference to `xenpv_exc_nmi'
>>
>>   ld: arch/x86/entry/entry_32.o: in function `asm_xenpv_exc_debug':
>>   (.entry.text+0x827): undefined reference to `xenpv_exc_debug'
>>
>> Only use them on 64-bit kernels.
> 
> Jürgen, can you queue a revert for when PV32 goes away?

Yes, will do.


Juergen