Date: Wed, 21 Nov 2007 15:24:04 +0100 From: Gergely CZUCZY <phoemix@harmless.hu> To: freebsd-stable@freebsd.org Subject: mmap max size (qemu VM memsize limit) Message-ID: <20071121142404.GA7511@harmless.hu>
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Hello,
I'm trying to set up a qemu with 4G memory to the host system
on a 7-BETA2, and I've hit some kind of limit in freebsd.
When i give more then ~2000MB of memory to qemu, it returns
an after trying to mmap() it, saying "Could not map physical memory".
At the end of mmap(2) there's a note saying:
" The len argument is limited to the maximum file size or available use=
r-
land address space. Files may not be able to be made more than 1TB la=
rge
on 32 bit systems due to file systems restrictions and bugs, but addre=
ss
space is far more restrictive. Larger files may be possible on 64 bit
systems."
I guess I've found this limit. I've tried to check a few sysctls but I wasn=
't
able to find the one effecting this limit.
Could someone point me into the right direction in increasing the maximum
mmap-able size?
Sincerely,
Gergely Czuczy
mailto: gergely.czuczy@harmless.hu
--=20
Weenies test. Geniuses solve problems that arise.
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