Re: [Xen-devel] [Xen EFI] Impossible to limit the dom0 memory

Hi Jan, hi Juergen, This needs to be investigated from the kernel side (which I'm afraid I simply don't have the time to help with). If someone can lead me, I can give some of my time to help. I can also provide an access to a server where the problem occurs. Let me know what I can do. I

Re: [Xen-devel] [Xen EFI] Impossible to limit the dom0 memory

>>> On 30.11.18 at 16:12, wrote: > I'm trying again this week to install Xen on a OVH server > (https://www.ovh.com/fr/serveurs_dedies/infra/1801eg02.xml). > > It is still impossible to boot Xen with the option "dom0_mem=1G,max:1G" > (boot : EFI->xen). I'm sorry to say so, but nothing has

Re: [Xen-devel] [Xen EFI] Impossible to limit the dom0 memory

Hi Jan, hi Juergen, I'm trying again this week to install Xen on a OVH server (https://www.ovh.com/fr/serveurs_dedies/infra/1801eg02.xml). It is still impossible to boot Xen with the option "dom0_mem=1G,max:1G" (boot : EFI->xen). I have tried with Debian 9 stable/stretch : - grub2

Re: [Xen-devel] [Xen EFI] Impossible to limit the dom0 memory

I have installed `linux-image-amd64-dbg` and `binutils`. I can now execute `addr2line -pfi -e vmlinux-4.14.0-0.bpo.3-amd64 `. I have generated a file "commands.txt" with all the addresses after "Guest stack trace from rsp=82003cb0:" in my log file "dom0_crash_with_dom0_memory.txt".

Re: [Xen-devel] [Xen EFI] Impossible to limit the dom0 memory

>>> On 25.01.18 at 12:16, wrote: > On 25/01/18 11:40, Jan Beulich wrote: >> This tells us (together with the page fault error code) that the >> Dom0 kernel tried to provide memory as kernel stack which >> can't be written. This may be a Dom0 kernel stack overflow, > > Really?

Re: [Xen-devel] [Xen EFI] Impossible to limit the dom0 memory

Guillaume, can you try to get symbol+offset for the values on the stack looking like kernel code addresses (e.g. everything starting with "82")? For sure. Just, can you explain me how I can do this, please ? Guillaume ___ Xen-devel mailing

Re: [Xen-devel] [Xen EFI] Impossible to limit the dom0 memory

# About the kernel crash Did you read the above? I just wanted to say that I have solved the kernel panic crash that I had before, when you explained "Xen doesn't crash at all. It's the Dom0 kernel which panics". Just for information the crash happens if I put the "console=com1" to the

Re: [Xen-devel] [Xen EFI] Impossible to limit the dom0 memory

On 25/01/18 11:40, Jan Beulich wrote: On 25.01.18 at 11:25, wrote: >>> Xen doesn't crash at all. > > Did you read the above? it is being confirmed by ... > >> With this file, it works, Xen boots : >> >> ``` >> [global] >> default=xen >> >> [xen] >> options=loglvl=all

Re: [Xen-devel] [Xen EFI] Impossible to limit the dom0 memory

(With the attached file) Xen doesn't crash at all. With this file, it works, Xen boots : ``` [global] default=xen [xen] options=loglvl=all com1=115200,8n1 console=com1,vga kernel=vmlinuz root=/dev/md2 ro rootdelay=10 noquiet nosplash earlyprintk=xen ramdisk=initrd.img ``` With this file,

Re: [Xen-devel] [Xen EFI] Impossible to limit the dom0 memory

Xen doesn't crash at all. With this file, it works, Xen boots : ``` [global] default=xen [xen] options=loglvl=all com1=115200,8n1 console=com1,vga kernel=vmlinuz root=/dev/md2 ro rootdelay=10 noquiet nosplash earlyprintk=xen ramdisk=initrd.img ``` With this file, I have just added

Re: [Xen-devel] [Xen EFI] Impossible to limit the dom0 memory

>>> On 23.01.18 at 18:43, wrote: >> Yet you'll need to provide the kernel messages > > I attached a console log "xen-console-log.txt". > > Here, Xen crash even without the "dom0_mem=1G,max:1G" option : Xen doesn't crash at all. It's the Dom0 kernel which panics, but the

Re: [Xen-devel] [Xen EFI] Impossible to limit the dom0 memory

Yet you'll need to provide the kernel messages I attached a console log "xen-console-log.txt". Here, Xen crash even without the "dom0_mem=1G,max:1G" option : ``` # cat /boot/efi/EFI/xen/xen.cfg [global] default=xen [xen] options=loglvl=all com1=115200,8n1 console=com1,vga kernel=vmlinuz

Re: [Xen-devel] [Xen EFI] Impossible to limit the dom0 memory

>>> On 23.01.18 at 12:18, wrote: > As explained on the Xen_EFI wiki page, I have added a line "options=" > into my file "/boot/efi/EFI/xen/xen.cfg" : > > ``` > # cat /boot/efi/EFI/xen/xen.cfg : > [global] > default=xen > > [xen] > options=dom0_mem=1G,max:1G >

[Xen-devel] [Xen EFI] Impossible to limit the dom0 memory

Hi, I have configured Xen to boot directly from EFI (with `efibootmgr`). As explained on the Xen_EFI wiki page, I have added a line "options=" into my file "/boot/efi/EFI/xen/xen.cfg" : ``` # cat /boot/efi/EFI/xen/xen.cfg : [global] default=xen [xen] options=dom0_mem=1G,max:1G