Hi, Thanks Bhupesh for confirmation about the ppc64 zImage support. As of now I am thinking of using 'uImage' as secondary kernel, because porting zImage changes for ppc will take more time for me. >>I plan to share a RFC patchset in a week or so and would need your >> help to test it on ppc32 boards like the p2020. Surely I will test it on p2020 once you release RFC patch. Regards Sunil Kumar Thanks & Regards, Sunil Kumar Technical Lead Montavista Software Bengaluru, India - 560008 www.mvista.com | +91-80-67228800 [+8865] On Sat, Sep 9, 2017 at 6:29 PM, Bhupesh SHARMA <bhupesh.linux at gmail.com> wrote: > Hi Sunil, > > On Fri, Sep 8, 2017 at 5:20 PM, Sunil Kumar <sukumar at mvista.com> wrote: >> Hi , >> >> Thanks for replying Pratyush. >> >> I have also seen the zImage support is present for the ppc64, earlier >> my plan was to take this source as reference and port it for ppc. >> But in zImage_ppc64_usage() its clearly written that "zImage support >> is still broken", which stop me. >> >> Is the zImage for ppc64 working properly ? Should I trust this ? >> >> Asking this because I don't have hardware to test for ppc64. >> >> If anyone else used the ppc64 zImage as secondary kernel. please >> provide your inputs here. > > I was recently experimenting with the kexec zImage support for both > ppc/ppc64 systems, but I do not find it working reliably on ppc64 on > Power8 machines as well. > > I am looking to work on a fix for the ppc64 zImage support first > (since I have real hardware to test the same on) and also looking to > extend it to ppc32 (for which I have only qemu systems to test on). > > I plan to share a RFC patchset in a week or so and would need your > help to test it on ppc32 boards like the p2020. > > Regards, > Bhupesh > >> >> On Fri, Sep 8, 2017 at 8:58 AM, Pratyush Anand <panand at redhat.com> wrote: >>> >>> >>> On Thursday 07 September 2017 01:49 PM, Sunil Kumar wrote: >>>> >>>> $ kexec -e >>>> >>>> As the zImage is also and elf file format, but the control is not >>>> getting transferred to the zImage. >>>> I can see kexec is able to load all the segments properly, but looks >>>> like its not able to figure out the entry point to start execution >>>> with zImage. >>>> >>>> ------------------------------------------------------------------------------------------------------------------------------------------------------- >>>> kexec_load: entry = 0x329678 flags = 0x0 >>>> >>>> ------------------------------------------------------------------------------------------------------------------------------------------------------- >>>> >>>> On the same board (i.e. Freescale p2020ds), uImage and vmlinux works fine. >>> >>> >>> Looking into upstream code: ppc has only support of elf and uImage,and so >>> they work. >>> >>>> >>>> Just curious to know , why the zImage support is still not provided in >>>> the kexec for ppc ?? >>> >>> >>> Probably because no one needed it till now. >>> >>>> Is there any restriction from kexec design point of view ? >>> >>> >>> I do not think. You can write a patch. I see, ppc64 has zImage support, so >>> you can take that as example and can write code for ppc as well. >>> >>> -- >>> Regards >>> Pratyush >> >> _______________________________________________ >> kexec mailing list >> kexec at lists.infradead.org >> http://lists.infradead.org/mailman/listinfo/kexec
