On Thu, Sep 27, 2012 at 02:37:14PM +0800, Wen Congyang wrote:
> Hi Vasilis Liaskovitis
> 
> At 09/27/2012 12:46 AM, Vasilis Liaskovitis Wrote:
> > Hi,
> > 
> > I am testing 3.6.0-rc7 with this v9 patchset plus more recent fixes [1],[2],[3]
> > Running in a guest (qemu+seabios from [4]). 
> > CONFIG_SLAB=y
> > CONFIG_DEBUG_SLAB=y
> > 
> > After succesfull hot-add and online, I am doing a hot-remove with "echo 1 > /sys/bus/acpi/devices/PNP/eject"
> > When I do the OSPM-eject, I often get slab corruption in "acpi-state" cache, or in other caches
> 
> I can't reproduce this problem. Can you provide the following information:
> 1. config file
> 2. qemu's command line
> 
> You said you did OSPM-eject. Do you mean write 1 to /sys/bus/acpi/devices/PNP0C80:XX/eject?
yes.

example qemu command line with one dimm:

"/opt/qemu-kvm-memhp/bin/qemu-system-x86_64 -bios
/opt/extra/vliaskov/devel/seabios-upstream/out/bios.bin -enable-kvm -M pc -smp
4,maxcpus=8 -cpu host -m 2048 -drive file=/opt/extra/debian-template.raw,if=none,id=drive-virtio-disk0,format=raw
-device virtio-blk-pci,bus=pci.0,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1
-vga cirrus -netdev type=tap,id=guest0,vhost=on -device virtio-net-pci,netdev=guest0
-monitor unix:/tmp/qemu.monitor11,server,nowait -chardev stdio,id=seabios  -device
isa-debugcon,iobase=0x402,chardev=seabios
-dimm id=n0,size=512M,node=0"

or last line with 2 numa nodes:
"-dimm id=n0,size=512M,node=0 -dimm id=n1,size=512M,node=1 -numa node,nodeid=0 -numa node,nodeid=1"

attached config. Tree is at:
https://github.com/vliaskov/linux/commits/memhp-fujitsu

thanks,
- Vasilis