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Re: [Xen-devel] Regarding changing memory for DOM0

On 03/08/17 09:57, George John wrote:


 I am running Xen on Rcar H3 which is now configured Dom0 memory as 752M
and need to change it as 2048M.I attempted to change it by
 xl mem-set (xl mem-set 0 2048M) where 0 is Dom0 ID.It result following

root@salvator-x-xen-dom0:~# xl list

Name                                        ID   Mem VCPUs    State
Domain-0                                     0   752     4
r-----      11.4

 my try as folows

root@salvator-x-xen-dom0:~# xl mem-set 0 2048m
xl: libxl.c:345: libxl_defbool_val: Assertion
`!libxl_defbool_is_default(db)' failed.

This was already reported few days ago. Please see:



after modification

    chosen {
        bootargs = "dom0_mem=2048M console=dtuart dtuart=serial0
dom0_max_vcpus=4 bootscrub=0 flask_enforcing=1 loglvl=all";

        xen,dom0-bootargs = "console=hvc0 root=/dev/nfs
nfsroot= ip= rw
rootwait  ignore_loglevel cma=128M";

but unfortunately file system crashes while booting

... I am not sure to understand the relation between the file system crashing and the amount of RAM. Having the full log here would be helpful. Is it because all the memory allocated is above 4GB?

xen version is 4.8.0

Do you have any requirement to use 4.8? If so, you should at least use the latest 4.8 version (i.e 4.8.1). If not, I would recommend to move to xen 4.9 if not unstable.

Also, what is your Linux version?


Julien Grall

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