linux-kernel - Re: [PATCH] um: add 2 missing libs to fix various build errors

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Message-ID: <2f1283d0-64bc-a225-cff3-71893fdf3330@cambridgegreys.com>
Date:   Wed, 12 May 2021 08:46:45 +0100
From:   Anton Ivanov <anton.ivanov@...bridgegreys.com>
To:     Randy Dunlap <rdunlap@...radead.org>, linux-kernel@...r.kernel.org
Cc:     kernel test robot <lkp@...el.com>,
        Brendan Jackman <jackmanb@...gle.com>,
        Alexei Starovoitov <ast@...nel.org>, kbuild-all@...ts.01.org,
        Jeff Dike <jdike@...toit.com>,
        Richard Weinberger <richard@....at>,
        linux-um@...ts.infradead.org,
        Johannes Berg <johannes@...solutions.net>,
        Johannes Berg <johannes.berg@...el.com>
Subject: Re: [PATCH] um: add 2 missing libs to fix various build errors



On 12/05/2021 02:56, Randy Dunlap wrote:
> On 4/9/21 10:28 PM, Anton Ivanov wrote:
>> On 10/04/2021 05:13, Randy Dunlap wrote:
>>> On 4/4/21 11:20 AM, Randy Dunlap wrote:
> 
> 
> [snip]
> 
>>>
>>> There are still some build errors in 2 object files:
>>>
>>> /usr/lib/gcc/i586-suse-linux/10/../../../../i586-suse-linux/bin/ld: kernel/irq/generic-chip.o:(.altinstructions+0x8): undefined reference to `X86_FEATURE_XMM2'
>>> /usr/lib/gcc/i586-suse-linux/10/../../../../i586-suse-linux/bin/ld: kernel/irq/generic-chip.o:(.altinstructions+0x15): undefined reference to `X86_FEATURE_XMM2'
>>> /usr/lib/gcc/i586-suse-linux/10/../../../../i586-suse-linux/bin/ld: kernel/irq/generic-chip.o:(.altinstructions+0x22): undefined reference to `X86_FEATURE_XMM'
>>> /usr/lib/gcc/i586-suse-linux/10/../../../../i586-suse-linux/bin/ld: kernel/irq/generic-chip.o:(.altinstructions+0x2f): undefined reference to `X86_FEATURE_XMM'
>>> /usr/lib/gcc/i586-suse-linux/10/../../../../i586-suse-linux/bin/ld: kernel/irq/generic-chip.o:(.altinstructions+0x3c): undefined reference to `X86_FEATURE_XMM'
>>> /usr/lib/gcc/i586-suse-linux/10/../../../../i586-suse-linux/bin/ld: kernel/irq/generic-chip.o:(.altinstructions+0x49): undefined reference to `X86_FEATURE_XMM'
>>> /usr/lib/gcc/i586-suse-linux/10/../../../../i586-suse-linux/bin/ld: kernel/irq/generic-chip.o:(.altinstructions+0x56): undefined reference to `X86_FEATURE_XMM'
>>> /usr/lib/gcc/i586-suse-linux/10/../../../../i586-suse-linux/bin/ld: kernel/irq/generic-chip.o:(.altinstructions+0x63): more undefined references to `X86_FEATURE_XMM' follow
>>>
>>> and
>>>
>>> /usr/lib/gcc/i586-suse-linux/10/../../../../i586-suse-linux/bin/ld: drivers/fpga/altera-pr-ip-core.o:(.altinstructions+0x8): undefined reference to `X86_FEATURE_XMM2'
>>> /usr/lib/gcc/i586-suse-linux/10/../../../../i586-suse-linux/bin/ld: drivers/fpga/altera-pr-ip-core.o:(.altinstructions+0x15): undefined reference to `X86_FEATURE_XMM2'
>>> /usr/lib/gcc/i586-suse-linux/10/../../../../i586-suse-linux/bin/ld: drivers/fpga/altera-pr-ip-core.o:(.altinstructions+0x22): undefined reference to `X86_FEATURE_XMM'
>>> /usr/lib/gcc/i586-suse-linux/10/../../../../i586-suse-linux/bin/ld: drivers/fpga/altera-pr-ip-core.o:(.altinstructions+0x2f): undefined reference to `X86_FEATURE_XMM'
>>> /usr/lib/gcc/i586-suse-linux/10/../../../../i586-suse-linux/bin/ld: drivers/fpga/altera-pr-ip-core.o:(.altinstructions+0x3c): undefined reference to `X86_FEATURE_XMM'
>>> /usr/lib/gcc/i586-suse-linux/10/../../../../i586-suse-linux/bin/ld: drivers/fpga/altera-pr-ip-core.o:(.altinstructions+0x49): undefined reference to `X86_FEATURE_XMM'
>>> /usr/lib/gcc/i586-suse-linux/10/../../../../i586-suse-linux/bin/ld: drivers/fpga/altera-pr-ip-core.o:(.altinstructions+0x56): undefined reference to `X86_FEATURE_XMM'
>>> /usr/lib/gcc/i586-suse-linux/10/../../../../i586-suse-linux/bin/ld: drivers/fpga/altera-pr-ip-core.o:(.altinstructions+0x63): undefined reference to `X86_FEATURE_XMM2'
>>> /usr/lib/gcc/i586-suse-linux/10/../../../../i586-suse-linux/bin/ld: drivers/fpga/altera-pr-ip-core.o:(.altinstructions+0x70): undefined reference to `X86_FEATURE_XMM2'
>>>
>>> I don't know what to do about these or what is causing them (other than
>>> "alternatives").
>>
>> I have a patch in the queue which should fix these - it "steals" the bug/feature definitions from the x86 tree.
>>
>> A
> 
> Hi Anton,
> 
> Can you post (repost) the patch for these or point me to it
> on a mailing list, please?
> 
> 
> thanks.

They are in patchwork:

It is the first patch in these series:

https://patchwork.ozlabs.org/project/linux-um/patch/20210312151609.24745-2-anton.ivanov@cambridgegreys.com/
https://patchwork.ozlabs.org/project/linux-um/patch/20210312151609.24745-3-anton.ivanov@cambridgegreys.com/
https://patchwork.ozlabs.org/project/linux-um/patch/20210312151609.24745-4-anton.ivanov@cambridgegreys.com/

Best Regards,

> 

-- 
Anton R. Ivanov
Cambridgegreys Limited. Registered in England. Company Number 10273661
https://www.cambridgegreys.com/