Re: [Qemu-devel] [PATCH 0/2] pc: memory hotplug fixes

[Igor Mammedov <imammedo@redhat.com>]

On Tue, 10 Jun 2014 14:05:07 +0300
"Michael S. Tsirkin" <mst@redhat.com> wrote:

> On Mon, Jun 09, 2014 at 07:27:59PM +0200, Igor Mammedov wrote:
> > Series is build on mst/pci tree that includes memory hotplug bits.
> > 
> > patch 2/2, fixes incorrect address auto-allocation caused by wrong
> > sorting order due to overflow in pc_dimm_addr_sort() comparator.
> > 
> > Test-case is to build qemu with stderr trace backend and start qemu with
> > following command line:
> > 
> > echo mhp_pc_dimm_assigned_address > /tmp/mhp
> > qemu-system-x86_64 -m 512,slots=62,maxmem=16G \
> >  -object memory-backend-ram,id=m2,size=256M -object memory-backend-ram,id=m3,size=256M \
> >  -object memory-backend-ram,id=m4,size=256M -object memory-backend-ram,id=m5,size=256M \
> >  -object memory-backend-ram,id=m6,size=256M -object memory-backend-ram,id=m7,size=256M \
> >  -object memory-backend-ram,id=m8,size=256M -object memory-backend-ram,id=m9,size=256M \
> >  -object memory-backend-ram,id=m10,size=256M -object memory-backend-ram,id=m11,size=256M \
> >  -object memory-backend-ram,id=m12,size=256M -object memory-backend-ram,id=m13,size=256M \
> >  -device pc-dimm,id=d1,memdev=m1 -device pc-dimm,id=d2,memdev=m2 -device pc-dimm,id=d3,memdev=m3 \
> >  -device pc-dimm,id=d4,memdev=m4 -device pc-dimm,id=d5,memdev=m5 -device pc-dimm,id=d6,memdev=m6 \
> >  -device pc-dimm,id=d7,memdev=m7 -device pc-dimm,id=d8,memdev=m8 -device pc-dimm,id=d9,memdev=m9 \
> >  -device pc-dimm,id=d10,memdev=m10 -device pc-dimm,id=d11,memdev=m11 -device pc-dimm,id=d12,memdev=m12 \
> >  -device pc-dimm,id=d13,memdev=m13 \
> >  -trace events=/tmp/mhp
> > 
> > output with incorrect addesses would look like:
> > mhp_pc_dimm_assigned_address 0x100000000
> > mhp_pc_dimm_assigned_address 0x110000000
> > mhp_pc_dimm_assigned_address 0x120000000
> > mhp_pc_dimm_assigned_address 0x130000000
> > mhp_pc_dimm_assigned_address 0x140000000
> > mhp_pc_dimm_assigned_address 0x150000000
> > mhp_pc_dimm_assigned_address 0x160000000
> > mhp_pc_dimm_assigned_address 0x170000000
> > mhp_pc_dimm_assigned_address 0x180000000
> > mhp_pc_dimm_assigned_address 0x180000000
> > mhp_pc_dimm_assigned_address 0x180000000
> > mhp_pc_dimm_assigned_address 0x180000000
> > mhp_pc_dimm_assigned_address 0x180000000
> > 
> > where last 5 dimms were assigned the same address.
> 
> I rebased my tree and applied these.
> Pushed, pls check the result.
result looks fine
thanks

> > Igor Mammedov (2):
> >   pc: q35: acpi: report error to user on unsupported unplug request
> >   pc-dimm: fix large address sorting during auto-allocation
> > 
> >  hw/isa/lpc_ich9.c | 2 ++
> >  hw/mem/pc-dimm.c  | 8 +++++++-
> >  2 files changed, 9 insertions(+), 1 deletion(-)
> > 
> > -- 
> > 1.9.3


-- 
Regards,
  Igor