[OpenWrt-Devel] [RFT PATCH] arc770: bump kernel to 5.4

[mail at adrianschmutzler.de]

> -----Original Message-----
> From: openwrt-devel [mailto:openwrt-devel-bounces at lists.openwrt.org]
> On Behalf Of mail at adrianschmutzler.de
> Sent: Montag, 27. Juli 2020 15:39
> To: 'Evgeniy Didin' <Evgeniy.Didin at synopsys.com>; 'Hauke Mehrtens'
> <hauke at hauke-m.de>; 'Alexey Brodkin' <Alexey.Brodkin at synopsys.com>
> Cc: openwrt-devel at lists.openwrt.org
> Subject: RE: [OpenWrt-Devel] [RFT PATCH] arc770: bump kernel to 5.4
> 
> > > @Evgeniy and @Alexey: Could you please test if this update to kernel
> > > 5.4
> > for the arc770 works basically.
> >
> > Thank you a lot for updating kernel to 5.4 for arc770! Unfortunately
> > we do not have access to boards with arc770, so we are not able to
> > test the image right now. By the way we ran Linux kernel v5.4(built by
> > buildroot)  on arc770 board and it worked well. I guess we can apply
> > this patch and if any issue appears we will fix it.
> 
> Just tried to build it based on recent master and with buildbot settings,
> ended with this error, though:
> 
> checking if we should build libunwind-ptrace... yes checking if we should
> build libunwind-setjmp... yes checking for build architecture... x86_64
> checking for host architecture... arc checking for target architecture... arc
> checking for target operating system... linux-gnu checking for ELF helper
> width... configure: error: Unknown ELF target: arc
> make[3]: *** [Makefile:65: /data/openwrt/build_dir/target-
> arc_arc700_uClibc/libunwind-
> 1.3.1/.configured_68b329da9893e34099c7d8ad5cb9c940] Error 1
> make[3]: Leaving directory '/data/openwrt/package/libs/libunwind'
> time: package/libs/libunwind/compile#11.36#1.63#14.15
> make[2]: *** [package/Makefile:113: package/libs/libunwind/compile] Error
> 2
> make[2]: Leaving directory '/data/openwrt'
> make[1]: *** [package/Makefile:107: /data/openwrt/staging_dir/target-
> arc_arc700_uClibc/stamp/.package_compile] Error 2
> make[1]: Leaving directory '/data/openwrt'
> make: *** [/data/openwrt/include/toplevel.mk:235: world] Error 2

I've found that the root cause is openvswitch selecting libunwind, and due to some mechanism I don't understand openvswitch isn't built anymore for 4.14 on buildbots already (though only for the most recent 4.14.x kernel version).

Since everything else is working, I decided to push 5.4 support now and will be curious whether buildbots run through or not.

Best

Adrian

> 
> Best
> 
> Adrian
> 
> >
> > Thanks and best regards,
> > Evgeniy Didin
> >
> > > If someone else has this hardware and can try this out, some
> > > feedback
> > would be nice.
> > >
> > > Hauke
> >
> > _______________________________________________
> > openwrt-devel mailing list
> > openwrt-devel at lists.openwrt.org
> > https://lists.openwrt.org/mailman/listinfo/openwrt-devel
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