At 09/10/2012 09:52 PM, Vasilis Liaskovitis Wrote: > 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. Hmm, seabios doesn't support ACPI table SLIT. We can specify node it for dimm device, so I think we should support SLIT in seabios. Otherwise we may meet the following kernel messages: [ 325.016769] init_memory_mapping: [mem 0x40000000-0x5fffffff] [ 325.018060] [mem 0x40000000-0x5fffffff] page 2M [ 325.019168] [ffffea0001000000-ffffea00011fffff] potential offnode page_structs [ 325.024172] [ffffea0001200000-ffffea00013fffff] potential offnode page_structs [ 325.028596] [ffffea0001400000-ffffea00017fffff] PMD -> [ffff880035000000-ffff8800353fffff] on node 1 [ 325.031775] [ffffea0001600000-ffffea00017fffff] potential offnode page_structs Do you have plan to do it? Thanks Wen Congyang > > thanks, > > - Vasilis > -- 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
