Date: Wed, 21 Sep 2005 20:51:43 +0200 From: Juergen Lock <nox@jelal.kn-bremen.de> To: "Lyubich, M" <lyubich-freebsd1@gmx.net> Cc: freebsd-emulation@freebsd.org Subject: Re: kqemu, FreeBSD, and virtual filesystem Message-ID: <20050921185143.GA12893@saturn.kn-bremen.de> In-Reply-To: <1127319952.1726.3.camel@sbec.Suzlon-HRO.local> References: <1127319952.1726.3.camel@sbec.Suzlon-HRO.local>
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On Wed, Sep 21, 2005 at 06:25:52PM +0200, Lyubich, M wrote: > Hello, > > My question relates to accelerator KQEMU and how it should be configured > for FreeBSD. > > The documentation on the Fabrice's site > http://fabrice.bellard.free.fr/qemu/kqemu-doc.html > > states that: > > "When using KQEMU on a Linux or FreeBSD host, QEMU will create a big > hidden file containing the RAM of the virtual machine. For best > performance, it is important that this file is kept in RAM and not on > the hard disk. ..... You can use the QEMU_TMPDIR shell variable to set a > new directory for the QEMU RAM file." > > Applying this to freebsd, does it mean that I have to use mdconfig + > newfs to create new filesystem and then setenv QEMU_TMPDIR=/dev/md0? The FreeBSD port uses the MAP_ANON mmap flag, and doesnt need QEMU_TMPDIR (see files/patch-osdep.c which patches work/qemu-snapshot-2005-09-09_23/ osdep.c:qemu_vmalloc().) So you don't need to do anything. Juergen
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