Re: [Xen-devel] [PATCH] xen: implement vector callback for evtchn delivery

[Boris Derzhavets <bderzhavets@xxxxxxxxx>]

I redefined DomU via profile :-

<domain type='xen' >
  <name>LucidHVM</name>
  <memory>2097152</memory>
  <currentMemory>2097152</currentMemory>
  <vcpu>2</vcpu>
  <os>
    <type>hvm</type>
    <loader>/usr/lib/xen/boot/hvmloader</loader>
    <boot dev='hd'/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <pae/>
  </features>
  <clock offset='utc'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>restart</on_crash>
  <devices>
    <emulator>/usr/lib64/xen/bin/qemu-dm</emulator>
    <disk type='block' device='disk'>
      <driver name='phy'/>
      <source dev='/dev/sda7'/>
      <target dev='xvda' bus='xen'/>   - instead of 'ide'
    </disk>
    <interface type='bridge'>
      <mac address='00:16:36:2a:cd:af'/>
      <source bridge='br0'/>
      <script path='/etc/xen/scripts/vif-bridge'/>
      <target dev='vif1.0'/>
    </interface>
    <serial type='pty'>
      <source path='/dev/pts/0'/>
      <target port='0'/>
    </serial>
    <console type='pty' tty='/dev/pts/0'>
      <source path='/dev/pts/0'/>
      <target port='0'/>
    </console>
    <input type='mouse' bus='ps2'/>
    <graphics type='vnc' port='5900' autoport='yes' keymap='en-us'/>
    <sound model='es1370'/>
  </devices>
</domain>

dmesg.log is attached.

Boris.

--- On Fri, 5/28/10, Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> wrote:

From: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH] xen: implement vector callback for evtchn delivery
To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxxx>, "Stefano Stabellini" <Stefano.Stabellini@xxxxxxxxxxxxx>
Date: Friday, May 28, 2010, 11:59 AM

On Thu, 27 May 2010, Boris Derzhavets wrote:
> <disk type="block" device="disk">
> <driver name="phy"/>
> <source dev="/dev/sda7"/>
> <target dev="hda" bus="ide"/>
> </disk>
> <disk type="file" device="cdrom">
> <target dev="hdc" bus="ide"/>
> <readonly/>

I am pretty sure that the interrupts on the ata_piix device are due to
the cdrom that has been used through the emulated interface.
Using xend/xl, it is possible to make sure your guest can use the pv
interface for the cdrom too, specifying xvdc instead of hdc as virtual
device:

disk = [ 'file:/path/to/iso,xvdc:cdrom,r' ]


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