Jeremy, Is this on which board? Unless you provide a log file, it is difficult to tell, but latest CentOS 7.4 (kernel 4.11) boots fine on X-Gene platforms. I am not sure how you built kernel, but this is what you can check. To boot X-Gene using acpi, you need to enable CONFIG_ARM64_ACPI_PARKING_PROTOCOL=y. CentOS (RPM) default configuration should already have this enabled. -Phong +-----Original Message----- +From: Arm-dev [mailto:arm-dev-bounces at centos.org] On Behalf Of Jeremiah +Rothschild +Sent: Friday, January 26, 2018 4:35 PM +To: Conversations around CentOS on ARM hardware +Subject: Re: [Arm-dev] Kernel problems on APM X-Gene + +On Sat, Nov 04, 2017 at 05:37:54PM +0000, Gordan Bobic wrote: +> Apologies for taking so long to return to this thread, it took way +> longer than expected to get to the machine and get it up and running +again. + +Thanks for the update & apologies as well on my delayed follow-up. + +Last time I wrote the mailing list about my kernel problems, I was told +(by jperrin at centos.org) that my system was not in a supported state +because I was daisy-chaining Tianocore EFI via U-Boot. I was directed to +flash the Tianocore firmware and remove U-Boot from the equation. +Although I was skeptical of this answer, I finally was able to do this. + +Unfortunately, however, this does not change behavior. I still cannot +successfully boot into any kernels beyond 4.5 unless I use 'acpi=off'. + +I am, interestingly enough, able to run the 4.9.60 kernel that you +supplied. + +So: + +(1) My experience leads me to believe that it is still a possibility +that a kernel related bug exists. + +(2) I am confused as to why your kernel worked. I built kernel-alt- +4.11.0-22.el7a from source and it fails like the others. Were there any +special steps you took in building the rpm's you supplied me? + +(3) Is it true that you are able to boot into the (> 4.5) distro- +supplied kernels? Or have you only tried/succeeded with your custom +builds? + +Thanks again! + +j + +> I also just updated the build to the latest 4.9.60. +> +> Here is a download link to both binaries and src.rpm (download the +> kernel tarball from kernel.org manually to build from src.rpm): +> http://ftp.redsleeve.org/pub/misc/kernel/aarch64/RPMS/ +> http://ftp.redsleeve.org/pub/misc/kernel/aarch64/SRPMS/ +> +> To recap - I am also running with Tianocore EFI chain-loaded from +> u-boot, and mainling 4.9.x boots just fine on it. +> +> No need for disabling ACPI on the kernel command line, no need to run +> EFI firmware as a 1st stage boot loader, it just works. +> Do feel free to try it - if that works for you but the distro supplied +> 4.5.x kernel doesn't, it seems reasonably conclusive that it is the +> CentOS kernel that is broken for this board. +> +> I'd also be interested in learning whether you have any luck getting +> PCIe cards to work with it without problems - I haven't tried it since +> upgrading to 4.9.x, but certainly on 4.4.x mainline the machine used +> to reliably lock up as soon as the driver for the PCIe card loads. +> +> Gordan +> +> +> On Fri, Sep 22, 2017 at 12:06 PM, Jeremiah Rothschild +> <jeremiah at franz.com> +> wrote: +> +> > On Fri, Sep 22, 2017 at 11:59:00AM +0100, Gordan Bobic wrote: +> > > On Fri, Sep 22, 2017 at 11:54 AM, Jeremiah Rothschild < +> > jeremiah at franz.com> +> > > wrote: +> > > +> > > > On Fri, Sep 22, 2017 at 11:39:19AM +0100, Gordan Bobic wrote: +> > > > > If you are interested, I'm more than happy to share my src.rpm +> > > > > for +> > 4.9.x, +> > > > > but won't be able to get to it before tomorrow morning as the +> > machine was +> > > > > recently mothballed. +> > > > +> > > > Thanks. I actually need to test with as new of a version as I +> > > > can +> > because I +> > > > have been experiencing an occasional "page allocation failure" +> > > > kernel panic. +> > > > No idea if/when that was fixed but I figure the newest version +> > > > is my +> > best +> > > > hope. +> > > > +> > > +> > > I've been on my own 4.9.x more or less since I got the machine, it +> > > was in +> > > 24/7 use, and I never experienced that issue. So it may be worth a +> > > cross-check with the kernel that I'm running to see whether the +> > > fault follows your machine or whether it is kernel dependent. +> > +> > You're right. It would be a good extra data point. Feel free to mail +> > me directly once you're sorted and I'll gladly check out your 4.9 +build. +> > Thanks +> > again! +> > +> > +> > +> > > _______________________________________________ +> > > Arm-dev mailing list +> > > Arm-dev at centos.org +> > > https://lists.centos.org/mailman/listinfo/arm-dev +> > +> > _______________________________________________ +> > Arm-dev mailing list +> > Arm-dev at centos.org +> > https://lists.centos.org/mailman/listinfo/arm-dev +> > + +> _______________________________________________ +> Arm-dev mailing list +> Arm-dev at centos.org +> https://lists.centos.org/mailman/listinfo/arm-dev + +_______________________________________________ +Arm-dev mailing list +Arm-dev at centos.org +https://lists.centos.org/mailman/listinfo/arm-dev