xen: parse and generate hpet item in sxpr

Recent versions of Xen disable the virtual HPET by default.  This is
usually more precise because tick policies are not implemented for
the HPET in Xen.  However, there may be several reasons to control
the HPET manually: 1) to test the emulation; 2) because distros may
provide the knob while leaving the default to "enabled" for compatibility
reasons.

This patch provides support for the hpet item in both sexpr and xm
formats, and translates it to a <timer> element.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini
2011-05-10 13:24:14 +02:00
committed by Eric Blake
parent fa4732724e
commit e547e44cb0
17 changed files with 403 additions and 0 deletions

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name = "XenGuest2"
uuid = "c7a5fdb2-cdaf-9455-926a-d65c16db1809"
maxmem = 579
memory = 394
vcpus = 1
builder = "hvm"
kernel = "/usr/lib/xen/boot/hvmloader"
boot = "d"
pae = 1
acpi = 1
apic = 1
localtime = 0
hpet = 1
on_poweroff = "destroy"
on_reboot = "restart"
on_crash = "restart"
device_model = "/usr/lib/xen/bin/qemu-dm"
sdl = 0
vnc = 1
vncunused = 1
vnclisten = "127.0.0.1"
vncpasswd = "123poi"
disk = [ "phy:/dev/HostVG/XenGuest2,hda,w", "file:/root/boot.iso,hdc:cdrom,r" ]
vif = [ "mac=00:16:3e:66:92:9c,bridge=xenbr1,script=vif-bridge,model=e1000,type=ioemu" ]
parallel = "none"
serial = "none"

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<domain type='xen'>
<name>XenGuest2</name>
<uuid>c7a5fdb2-cdaf-9455-926a-d65c16db1809</uuid>
<memory>592896</memory>
<currentMemory>403456</currentMemory>
<vcpu>1</vcpu>
<os>
<type arch='i686' machine='xenfv'>hvm</type>
<loader>/usr/lib/xen/boot/hvmloader</loader>
<boot dev='cdrom'/>
</os>
<features>
<acpi/>
<apic/>
<pae/>
</features>
<clock offset='utc'>
<timer name='hpet' present='yes'/>
</clock>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/lib/xen/bin/qemu-dm</emulator>
<disk type='block' device='disk'>
<driver name='phy'/>
<source dev='/dev/HostVG/XenGuest2'/>
<target dev='hda' bus='ide'/>
</disk>
<disk type='file' device='cdrom'>
<driver name='file'/>
<source file='/root/boot.iso'/>
<target dev='hdc' bus='ide'/>
<readonly/>
</disk>
<interface type='bridge'>
<mac address='00:16:3e:66:92:9c'/>
<source bridge='xenbr1'/>
<script path='vif-bridge'/>
<model type='e1000'/>
</interface>
<input type='mouse' bus='ps2'/>
<graphics type='vnc' port='-1' autoport='yes' listen='127.0.0.1' passwd='123poi'/>
</devices>
</domain>

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name = "XenGuest2"
uuid = "c7a5fdb2-cdaf-9455-926a-d65c16db1809"
maxmem = 579
memory = 394
vcpus = 1
builder = "hvm"
kernel = "/usr/lib/xen/boot/hvmloader"
boot = "d"
pae = 1
acpi = 1
apic = 1
localtime = 0
hpet = 0
on_poweroff = "destroy"
on_reboot = "restart"
on_crash = "restart"
device_model = "/usr/lib/xen/bin/qemu-dm"
sdl = 0
vnc = 1
vncunused = 1
vnclisten = "127.0.0.1"
vncpasswd = "123poi"
disk = [ "phy:/dev/HostVG/XenGuest2,hda,w", "file:/root/boot.iso,hdc:cdrom,r" ]
vif = [ "mac=00:16:3e:66:92:9c,bridge=xenbr1,script=vif-bridge,model=e1000,type=ioemu" ]
parallel = "none"
serial = "none"

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@@ -0,0 +1,45 @@
<domain type='xen'>
<name>XenGuest2</name>
<uuid>c7a5fdb2-cdaf-9455-926a-d65c16db1809</uuid>
<memory>592896</memory>
<currentMemory>403456</currentMemory>
<vcpu>1</vcpu>
<os>
<type arch='i686' machine='xenfv'>hvm</type>
<loader>/usr/lib/xen/boot/hvmloader</loader>
<boot dev='cdrom'/>
</os>
<features>
<acpi/>
<apic/>
<pae/>
</features>
<clock offset='utc'>
<timer name='hpet' present='no'/>
</clock>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/lib/xen/bin/qemu-dm</emulator>
<disk type='block' device='disk'>
<driver name='phy'/>
<source dev='/dev/HostVG/XenGuest2'/>
<target dev='hda' bus='ide'/>
</disk>
<disk type='file' device='cdrom'>
<driver name='file'/>
<source file='/root/boot.iso'/>
<target dev='hdc' bus='ide'/>
<readonly/>
</disk>
<interface type='bridge'>
<mac address='00:16:3e:66:92:9c'/>
<source bridge='xenbr1'/>
<script path='vif-bridge'/>
<model type='e1000'/>
</interface>
<input type='mouse' bus='ps2'/>
<graphics type='vnc' port='-1' autoport='yes' listen='127.0.0.1' passwd='123poi'/>
</devices>
</domain>