Hi Jerry, On Tue, Sep 11, 2012 at 08:27:40AM +0800, 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. Don't be afraid. If you might make a mistake, it's very natural to newbie. I am sure anyone doesn't blame you. :) If you have a good patch, please send out. > > 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. Just out of curiosity. What's the your scenario and gain? AFAIK, there were some effort about it in embedded side but gain isn't rather big IIRC. > > Any comments are appreciated. > > Thanks, > Jerry > > 2012/9/10 Vasilis Liaskovitis <vasilis.liaskovitis@xxxxxxxxxxxxxxxx> > > > 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 > > > >> wency@xxxxxxxxxxxxxx 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 majordomo@xxxxxxxxx. For more info on Linux MM, > > see: http://www.linux-mm.org/ . > > Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a> > > > > > > -- > I love linux!!! -- Kind regards, Minchan Kim -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
