* Re: [PATCH 0/5] Add support for ppc64le in kvmtool [not found] <1459423707-8956-1-git-send-email-bsingharora@gmail.com> @ 2016-03-31 13:38 ` Laurent Vivier 2016-04-01 0:12 ` Balbir Singh 0 siblings, 1 reply; 6+ messages in thread From: Laurent Vivier @ 2016-03-31 13:38 UTC (permalink / raw) To: Balbir Singh; +Cc: will.deacon, kvm, mpe, mikey, kvm-ppc 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. 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? Or give me a link to the information, and I'll do. Thanks, Laurent ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 0/5] Add support for ppc64le in kvmtool 2016-03-31 13:38 ` [PATCH 0/5] Add support for ppc64le in kvmtool Laurent Vivier @ 2016-04-01 0:12 ` Balbir Singh 2016-04-04 8:34 ` Balbir Singh 0 siblings, 1 reply; 6+ messages in thread From: Balbir Singh @ 2016-04-01 0:12 UTC (permalink / raw) To: Laurent Vivier; +Cc: will.deacon, kvm, mpe, mikey, kvm-ppc 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 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 ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 0/5] Add support for ppc64le in kvmtool 2016-04-01 0:12 ` Balbir Singh @ 2016-04-04 8:34 ` Balbir Singh 2016-04-04 8:41 ` Laurent Vivier 0 siblings, 1 reply; 6+ messages in thread From: Balbir Singh @ 2016-04-04 8:34 UTC (permalink / raw) To: Laurent Vivier Cc: Will Deacon, kvm, Michael Ellerman, Michael Neuling, kvm-ppc On Fri, Apr 1, 2016 at 11:12 AM, Balbir Singh <bsingharora@gmail.com> 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 > > 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, Did the instructions help? Any luck with running kvmtool? Balbir ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 0/5] Add support for ppc64le in kvmtool 2016-04-04 8:34 ` Balbir Singh @ 2016-04-04 8:41 ` Laurent Vivier 2016-04-04 10:24 ` Balbir Singh 0 siblings, 1 reply; 6+ messages in thread From: Laurent Vivier @ 2016-04-04 8:41 UTC (permalink / raw) To: Balbir Singh; +Cc: Will Deacon, kvm, Michael Ellerman, Michael Neuling, kvm-ppc On 04/04/2016 10:34, Balbir Singh wrote: > On Fri, Apr 1, 2016 at 11:12 AM, Balbir Singh <bsingharora@gmail.com> 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 ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 0/5] Add support for ppc64le in kvmtool 2016-04-04 8:41 ` Laurent Vivier @ 2016-04-04 10:24 ` Balbir Singh 2016-04-04 12:21 ` Laurent Vivier 0 siblings, 1 reply; 6+ messages in thread From: Balbir Singh @ 2016-04-04 10:24 UTC (permalink / raw) To: Laurent Vivier Cc: Will Deacon, kvm, Michael Ellerman, Michael Neuling, kvm-ppc >> > > 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)? I use objcopy -O binary vmlinux vmlinux.bin Balbir ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 0/5] Add support for ppc64le in kvmtool 2016-04-04 10:24 ` Balbir Singh @ 2016-04-04 12:21 ` Laurent Vivier 0 siblings, 0 replies; 6+ messages in thread From: Laurent Vivier @ 2016-04-04 12:21 UTC (permalink / raw) To: Balbir Singh; +Cc: Will Deacon, kvm, Michael Ellerman, Michael Neuling, kvm-ppc On 04/04/2016 12:24, Balbir Singh wrote: >>> >> >> 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)? > > I use > > objcopy -O binary vmlinux vmlinux.bin Many thanks! It was the missing part :) I'm able to boot a big-endian kernel now, I'll test your patches as soon as I have access to a little-endian capable host. Laurent ^ permalink raw reply [flat|nested] 6+ messages in thread
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[not found] <1459423707-8956-1-git-send-email-bsingharora@gmail.com>
2016-03-31 13:38 ` [PATCH 0/5] Add support for ppc64le in kvmtool Laurent Vivier
2016-04-01 0:12 ` Balbir Singh
2016-04-04 8:34 ` Balbir Singh
2016-04-04 8:41 ` Laurent Vivier
2016-04-04 10:24 ` Balbir Singh
2016-04-04 12:21 ` Laurent Vivier
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