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Subject: Re: [PATCH] um: add 2 missing libs to fix various build errors
To:     Anton Ivanov <anton.ivanov@cambridgegreys.com>,
        linux-kernel@vger.kernel.org
Cc:     kernel test robot <lkp@intel.com>,
        Brendan Jackman <jackmanb@google.com>,
        Alexei Starovoitov <ast@kernel.org>, kbuild-all@lists.01.org,
        Jeff Dike <jdike@addtoit.com>,
        Richard Weinberger <richard@nod.at>,
        linux-um@lists.infradead.org,
        Johannes Berg <johannes@sipsolutions.net>,
        Johannes Berg <johannes.berg@intel.com>
References: <20210404182044.9918-1-rdunlap@infradead.org>
 <9f7eeb70-8ddc-fb04-a378-5f1e80d485e6@infradead.org>
 <74a0ba94-9a22-b7a4-3c1b-596ddbaa856e@cambridgegreys.com>
From:   Randy Dunlap <rdunlap@infradead.org>
Message-ID: <2a2ddf5b-3d08-1a13-94c8-ae2ca0e6444b@infradead.org>
Date:   Tue, 11 May 2021 18:56:51 -0700
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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.
-- 
~Randy