kvm errors when using greater than 3572m of memory

Hi,

I get the following error when I give -m 3752 or higher:

stormcrow:/data/kvm# kvm -no-acpi -m 3572 -cdrom
/data/iso/w2k3_server_ent_r2_disc1.iso -boot d -usbdevice tablet
tharkun.img 
create_kernel_phys_mem: Invalid argumentset_vram_mapping: cannot
allocate memory: Invalid argument
NULL vram_pointe

If I do -m 3751 I get no error and it works:

stormcrow:/data/kvm# kvm -no-acpi -m 3571 -cdrom
/data/iso/w2k3_server_ent_r2_disc1.iso -boot d -usbdevice tablet
tharkun.img 

If I go up a little bit higher, the message changes:

stormcrow:/data/kvm# kvm -no-acpi -m 3600 -cdrom
/data/iso/w2k3_server_ent_r2_disc1.iso -boot d -usbdevice tablet
tharkun.img 
qemu: could not load PC BIOS '/usr/share/kvm/bios.bin'

shmmax is set to 4g:

stormcrow:/data/kvm# cat /proc/sys/kernel/shmmax 
4294967296

I'm using kvm 54 from Debian unstable on 2.6.22-3-amd64. Any other debugging info can be provided upon request.

Thanks,

Brian

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Quoted 10 lines · Brian Almeida

Hi,

I get the following error when I give -m 3752 or higher:

stormcrow:/data/kvm# kvm -no-acpi -m 3572 -cdrom
/data/iso/w2k3_server_ent_r2_disc1.iso -boot d -usbdevice tablet
tharkun.img create_kernel_phys_mem: Invalid argumentset_vram_mapping: 
cannot
allocate memory: Invalid argument
NULL vram_pointe

great :),
for to be able to run with above 4giga at "safe" way right now you need kvm module above 46
is it possible that you use the module from the 2.6.22 kernel? and not the module from the kvm-54 package?

please tell me what happen if you run it with -m 4096

Quoted 30 lines

If I do -m 3751 I get no error and it works:

stormcrow:/data/kvm# kvm -no-acpi -m 3571 -cdrom
/data/iso/w2k3_server_ent_r2_disc1.iso -boot d -usbdevice tablet
tharkun.img
If I go up a little bit higher, the message changes:
stormcrow:/data/kvm# kvm -no-acpi -m 3600 -cdrom
/data/iso/w2k3_server_ent_r2_disc1.iso -boot d -usbdevice tablet
tharkun.img qemu: could not load PC BIOS '/usr/share/kvm/bios.bin'

shmmax is set to 4g:

stormcrow:/data/kvm# cat /proc/sys/kernel/shmmax 4294967296

I'm using kvm 54 from Debian unstable on 2.6.22-3-amd64. Any other debugging info can be provided upon request.

Thanks,

Brian

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yea it does look like the reason is that you use old kvm module version, i ran it on my box with 3572 mb of ram and it work

Quoted 3 lines · Izik Eidus

yea it does look like the reason is that you use old kvm module version, i ran it on my box with 3572 mb of ram and it work

Ok - I will try with the latest version. Thanks!

Brian

(note that kvm-54 should be enough, you just have to make sure that you use the modules that come with it)

Quoted 3 lines · Izik Eidus

(note that kvm-54 should be enough, you just have to make sure that you use the modules that come with it)

Yes, this fixed the problem.

Any idea why the ACPI opitmization patches (tpr-opt-1) are slated to make it in an upstream release so I can use SMP on windows guests? Do they work with kvm-5[45]?

Brian