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Date:   Mon, 21 Sep 2020 14:19:48 +0530
From:   Bhaskar Chowdhury <unixbhaskar@gmail.com>
To:     Greg KH <gregkh@linuxfoundation.org>
Cc:     Naresh Kamboju <naresh.kamboju@linaro.org>,
        Stuart Little <achirvasub@gmail.com>,
        Dan Williams <dan.j.williams@intel.com>,
        Vishal Verma <vishal.l.verma@intel.com>,
        Dave Jiang <dave.jiang@intel.com>, linux-nvdimm@lists.01.org,
        kernel list <linux-kernel@vger.kernel.org>,
        linux- stable <stable@vger.kernel.org>,
        Adrian Huang <ahuang12@lenovo.com>,
        Mike Snitzer <snitzer@redhat.com>, dm-devel@redhat.com,
        Ira Weiny <ira.weiny@intel.com>, mpatocka@redhat.com,
        lkft-triage@lists.linaro.org, Jan Kara <jack@suse.cz>
Subject: Re: PROBLEM: 5.9.0-rc6 fails =?utf-8?Q?to_?=
 =?utf-8?Q?compile_due_to_'redefinition_of_=E2=80=98dax=5Fsupported?=
 =?utf-8?B?4oCZJw==?=
Message-ID: <20200921084948.GA20254@Slackware>
Mail-Followup-To: Bhaskar Chowdhury <unixbhaskar@gmail.com>,
        Greg KH <gregkh@linuxfoundation.org>,
        Naresh Kamboju <naresh.kamboju@linaro.org>,
        Stuart Little <achirvasub@gmail.com>,
        Dan Williams <dan.j.williams@intel.com>,
        Vishal Verma <vishal.l.verma@intel.com>,
        Dave Jiang <dave.jiang@intel.com>, linux-nvdimm@lists.01.org,
        kernel list <linux-kernel@vger.kernel.org>,
        linux- stable <stable@vger.kernel.org>,
        Adrian Huang <ahuang12@lenovo.com>,
        Mike Snitzer <snitzer@redhat.com>, dm-devel@redhat.com,
        Ira Weiny <ira.weiny@intel.com>, mpatocka@redhat.com,
        lkft-triage@lists.linaro.org, Jan Kara <jack@suse.cz>
References: <20200921010359.GO3027113@arch-chirva.localdomain>
 <CA+G9fYtCg2KjdB2oBUDJ2DKAzUxq3u8ZnMY9Et-RG9Pnrmuf9w@mail.gmail.com>
 <20200921073218.GA3142611@kroah.com>
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On 09:32 Mon 21 Sep 2020, Greg KH wrote:
>On Mon, Sep 21, 2020 at 11:34:17AM +0530, Naresh Kamboju wrote:
>> On Mon, 21 Sep 2020 at 06:34, Stuart Little <achirvasub@gmail.com> wrote:
>> >
>> > I am trying to compile for an x86_64 machine (Intel(R) Core(TM) i7-750=
0U CPU @ 2.70GHz). The config file I am currently using is at
>> >
>> > https://termbin.com/xin7
>> >
>> > The build for 5.9.0-rc6 fails with the following errors:
>> >
>>=20
>> arm and mips allmodconfig build breaks due to this error.
>
>all my local builds are breaking now too with this :(
>
>Was there a proposed patch anywhere for this?
>
>thanks,
>
>greg k-h

I don't know Greg,but it builds for me with these config :

bhaskar@Slackware_14:14:31_Mon Sep 21:~> cd /data/linux
=E2=9C=94 /data/linux [master|=E2=9A=91 1]
14:14 $ grep DAX .config
CONFIG_NVDIMM_DAX=3Dy
CONFIG_DAX_DRIVER=3Dy
CONFIG_DAX=3Dy
CONFIG_DEV_DAX=3Dm
CONFIG_DEV_DAX_PMEM=3Dm
CONFIG_DEV_DAX_KMEM=3Dm
CONFIG_DEV_DAX_PMEM_COMPAT=3Dm
CONFIG_FS_DAX=3Dy
CONFIG_FS_DAX_PMD=3Dy


and it gets booted by qemu ....like this=20

[    5.134563] devtmpfs: mounted
[    5.164729] Freeing unused decrypted memory: 2040K
[    5.314950] Freeing unused kernel image (initmem) memory: 1600K
[    5.316543] Write protecting the kernel read-only data: 26624k
[    5.327037] Freeing unused kernel image (text/rodata gap) memory: 2040K
[    5.331005] Freeing unused kernel image (rodata/data gap) memory: 876K
[    5.331861] rodata_test: all tests were successful
[    5.332872] Run /sbin/init as init process
[    5.694654] EXT4-fs (sda): re-mounted. Opts: (null)
[    5.695839] ext4 filesystem being remounted at / supports timestamps unt=
il 2038 (0x7fffffff)
Starting syslogd: OK
Starting klogd: OK
Running sysctl: [    6.974188] random: crng init done
OK
Initializing random number generator: OK
Saving random seed: OK
Starting network: [    8.293018] hrtimer: interrupt took 4569776 ns
OK

Welcome to Buildroot_Linux
Bhaskar_Thinkpad_x250 login: root
# uname -a
Linux Bhaskar_Thinkpad_x250 5.9.0-rc6-Slackware #1 SMP Mon Sep 21 11:42:03 =
IST 2020 x86_64 GNU/Linux


~Bhaskar

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