Installation guide

To customize the hypervisor, insert parameters before the --. An example of the hypervisor memory
(mem) parameter and the quiet parameter for the kernel:
append="dom0_mem=2G -- quiet"
ELILO hyp erviso r p aramet ers
Paramet er Descrip t io n
mem=
The
mem
parameter defines the hypervisor
maximum RAM usage. Any additional RAM in the
system is ignored. The parameter may be
specified with a B, K, M or G suffix; representing
bytes, kilobytes, megabytes and gigabytes
respectively. If no suffix is specified the default
unit is kilobytes.
dom0_mem= dom0_mem=
sets the amount of RAM to allocate
to dom0. The same suffixes are respected as for
the mem parameter above. The default in Red
Hat Enterprise Linux 5.2 on Itanium® is 4G.
dom0_max_vcpus= dom0_max_vcpus=
sets the number of CPUs to
allocate to the hypervisor. The default in Red
Hat Enterprise Linux 5.2 on Itanium® is 4.
com1=<baud>,DPS,<io_base>,<irq> com1=
sets the parameters for the first serial line.
For example,
com1=9600,8n1,0x408,5
. The
io_base
and
irq
options can be omitted to
leave them as the standard defaults. The
baud
parameter can be set as
auto
to indicate the
boot loader setting should be preserved. The
com1
parameter can be omitted if serial
parameters are set as global options in ELILO or
in the EFI configuration.
com2=<baud>,DPS,<io_base>,<irq>
Set the parameters for the second serial line.
Refer the description of the
com1
parameter
above.
console=<specifier_list>
The
console
is a comma delimited preference
list for the console options. Options include vga,
com1 and com2. This setting should be omitted
because the hypervisor attempts to inherit EFI
console settings.
A modified example of the configuration above, showing syntax for appending memory and cpu
allocation parameters to the hypervisor:
image=vmlinuz-2.6.18-92.el5xen
vmm=xen.gz-2.6.18-92.el5
label=linux
initrd=initrd-2.6.18-92.el5xen.img
read-only
root=/dev/VolGroup00/rhel5_2
append="dom0_mem=2G dom0_max_vcpus=2 --"
⁠Chapt er 30 . Configuring ELILO
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