Re: [Xen-devel] Re: how to handle paged hypercall args?

[Keir Fraser <keir@xxxxxxx>]

On 07/12/2010 17:16, "Olaf Hering" <olaf@xxxxxxxxx> wrote:

> On Tue, Dec 07, Keir Fraser wrote:
> 
>> No, I did some unit testing of the waitqueue stuff and it worked for me.
>> Perhaps you can suggest some reproduction steps.
> 
> The patches 1 - 13 I sent out need to be applied.

I'll wait for tools patches 1-7 to be reviewed and accepted, then I might
find time to have a go. I assume I should start the guest paused, attach
xenpaging, then when I unpause th eguest it should crash the host straight
away pretty much?

 -- Keir

> My config for a SLES11-SP1-x86_64 guest looks like that, 1 vcpu appears
> to make it crash faster:
> 
>   # /etc/xen/vm/sles11_0
> name="sles11_0"
> description="None"
> uuid="756210f5-cc53-2bc6-7db2-a0cefca17c0b"
> memory=1024
> maxmem=1024
> vcpus=4
> on_poweroff="destroy"
> on_reboot="restart"
> on_crash="destroy"
> localtime=0
> keymap="de"
> builder="hvm"
> device_model="/usr/lib/xen/bin/qemu-dm"
> kernel="/usr/lib/xen/boot/hvmloader"
> boot="c"
> disk=[ 'file:/abuild/vdisk-sles11_0-disk0,hda,w',
> 'file:/abuild/vdisk-sles11_0-disk1,hdb,w',
> 'file:/abuild/bootiso-xenpaging-sles11_0.iso,hdc:cdrom,r', ]
> vif=[ 'mac=00:e0:f1:08:15:00,bridge=br0,model=rtl8139,type=netfront', ]
> stdvga=0
> vnc=1
> vncunused=1
> extid=0
> acpi=1
> pae=1
> serial="pty"
> 
> The guest does not get very far, so all the IO part does probably not
> matter.  I stop the guest in grub, then run 'xenpaging 1 -1'. With patch
> #13 only the guests pagetables get paged once the kernel is started from
> grub. For me it crashes in less than 255 populate/resume cycles.
> 
> Does that help to reproduce the crash?
> 
> Olaf
> 



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