On 04/04/2016 10:34, Balbir Singh wrote: > On Fri, Apr 1, 2016 at 11:12 AM, Balbir Singh <bsingharora@xxxxxxxxx> wrote: >> >> >> On 01/04/16 00:38, Laurent Vivier wrote: >>> Hi, >>> >>> >>> could you add "kvmtool" in the subject, next time, please? :) >>> And it could be a good idea to send to kvm-ppc ML too. >> You mean like in [kvmtool]? The cover letter does have kvmtool, I think >> adding [kvmtool] tag helps. I'll keep it in mind >>> On 31/03/2016 13:28, Balbir Singh wrote: >>>> Changelog v2: Add support for running a task on all cpus by >>>> Michael Ellerman. Large improvements to patch 2/4 >>>> >>>> This patchset adds support for ppc64le. As a part of the support 1/4 converts >>>> key data structures in the fdt to big endian. 2/4 introduces h_set_mode call >>>> to support little endian interrupt processing. This requires support to execute >>>> and queue commands to a particular vcpu and hence a generic infrastructure >>>> is added in patch 2/4. Patch 3/4 fixes a race condition found during exit. >>>> Patch 4/4 adds support for fixing spapr_pci to support little endian guests >>>> so that virtio-pci can be detected and virtio can work >>>> >>>> This patchset was tested on x64 (on my laptop) and on a ppc64le system. >>>> >>>> Balbir Singh (5): >>>> Add basic little endian support. >>>> Add basic infrastructure to run tasks on vCPUs >>>> Implement H_SET_MODE for ppc64le >>>> Fix a race during exit processing >>>> Implement spapr pci for little endian systems. >>> I was trying to use kvmtool on ppc64, some days ago, and I was not able >>> to run anything (yes, I'm stupid), So could you also update the README >>> with some ppc64/ppc64le stuff explaining how to use kvmtool on POWER? >> No.. I don't think anyone is stupid, may be it just doesn't work. For ppc64le >> here are the steps. I'll write a README after this series is committed >> >> 1. Make sure you have this patchset >> 2. Compile a ppc64le_defconfig kernel >> 3. Strip the elf header from vmlinux (yes, we don't yet have an elf parser - TODO) >> 4. lkvm run -c <cpus> -m <mem{constrained to 4G}> -k <kernel from step 3> -i <initrd> -d <diskimage> -p <args> --console hv >> >> There are two limitations that need to be fixed >> 1. memory is limited to 4G because of the way RTAS is currently setup in kvmtool, I have a brute force >> fix for it, I'll post it after this series is merged >> 2. HPT size is limited to 16MB, will post a patch after this series is merged Do you know David Gibson is working on a patch series for QEMU/KVM to change the size of the HPT while the guest is running? http://patchwork.ozlabs.org/patch/599965/ >> >> TODOs >> 1. Implement an elf parser so that we don't have to do step 3 >> >> >>> Or give me a link to the information, and I'll do. >> I hope this helps, I can do some documentation once we get the limitations and TODOs >> resolved >>> Thanks, >>> Laurent >> Thanks for looking into this >> Balbir > > Hi, Hi, > Did the instructions help? Any luck with running kvmtool? > This is helpful but I didn't have the time to try again. Just one more question: how do you strip the ELF header (step 3)? Thanks, Laurent -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html