At 09/11/2012 08:27 AM, Jerry Wrote: > Hi Wen, > > I have been arranged a job related memory hotplug on ARM architecture. > Maybe I know some new issues about memory hotplug on ARM architecture. I > just enabled it on ARM, and it works well in my Android tablet now. > However, I have not send out my patches. The real reason is that I don't > know how to do it. Maybe I need to read "Documentation/SubmittingPatches". > > Hi Andrew, > This is my first time to send you a e-mail. I am so nervous about if I have > some mistakes or not. > > Some peoples maybe think memory hotplug need to be supported by special > hardware. Maybe it means memory physical hotplug. Some times, we just need > to use memory logical hotplug, doesn't remove the memory in physical. It is > also usefully for power saving in my platform. Because I doesn't want > the offline memory is in *self-refresh* state.
Power saving? Do you need _PSx support? Thanks Wen Congyang > > Any comments are appreciated. > > Thanks, > Jerry > > 2012/9/10 Vasilis Liaskovitis <vasilis.liaskovi...@profitbricks.com> > >> Hi, >> >> On Mon, Sep 10, 2012 at 10:01:44AM +0800, Wen Congyang wrote: >>> At 09/10/2012 09:46 AM, Yasuaki Ishimatsu Wrote: >>>> Hi Wen, >>>> >>>> 2012/09/01 5:49, Andrew Morton wrote: >>>>> On Tue, 28 Aug 2012 18:00:07 +0800 >>>>> we...@cn.fujitsu.com wrote: >>>>> >>>>>> This patch series aims to support physical memory hot-remove. >>>>> >>>>> I doubt if many people have hardware which permits physical memory >>>>> removal? How would you suggest that people with regular hardware can >>>>> test these chagnes? >>>> >>>> How do you test the patch? As Andrew says, for hot-removing memory, >>>> we need a particular hardware. I think so too. So many people may want >>>> to know how to test the patch. >>>> If we apply following patch to kvm guest, can we hot-remove memory on >>>> kvm guest? >>>> >>>> http://lists.gnu.org/archive/html/qemu-devel/2012-07/msg01389.html >>> >>> Yes, if we apply this patchset, we can test hot-remove memory on kvm >> guest. >>> But that patchset doesn't implement _PS3, so there is some restriction. >> >> the following repos contain the patchset above, plus 2 more patches that >> add >> PS3 support to the dimm devices in qemu/seabios: >> >> https://github.com/vliaskov/seabios/commits/memhp-v2 >> https://github.com/vliaskov/qemu-kvm/commits/memhp-v2 >> >> I have not posted the PS3 patches yet in the qemu list, but will post them >> soon for v3 of the memory hotplug series. If you have issues testing, let >> me >> know. >> >> thanks, >> >> - Vasilis >> >> -- >> To unsubscribe, send a message with 'unsubscribe linux-mm' in >> the body to majord...@kvack.org. For more info on Linux MM, >> see: http://www.linux-mm.org/ . >> Don't email: <a href=mailto:"d...@kvack.org";> em...@kvack.org </a> >> > > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
