Date: Sun, 25 Feb 2001 08:58:22 -0500 From: Vladimir Silyaev <vsilyaev@mindspring.com> To: Julian Elischer <julian@elischer.org> Cc: Andrew Gallatin <gallatin@cs.duke.edu>, Matt Dillon <dillon@earth.backplane.com>, freebsd-emulation@FreeBSD."ORG" Subject: Re: Does vmware2 wire pages? Message-ID: <20010225085822.A305@delta.rc.ny.us> In-Reply-To: <3A988DF4.9A1626E0@elischer.org>; from julian@elischer.org on Sat, Feb 24, 2001 at 08:45:40PM -0800 References: <3A89B7A0.B47D91E@Lustig.COM> <20010214072943.A365@delta.rc.ny.us> <3A96A29A.3BBF2614@elischer.org> <14998.46507.267723.148767@grasshopper.cs.duke.edu> <3A988DF4.9A1626E0@elischer.org>
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On Sat, Feb 24, 2001 at 08:45:40PM -0800, Julian Elischer wrote:
> >
> > The first part (hacking the Linulator) is unacceptable for general
> > consumption & a better way needs to be found. One thing I've thought
> > of is adding some functionality to the vmmon kernel module to force
> > the vmware app's mmap'ed regions to be MAP_NOSYNC. I don't know
> > enough about how vmware works to achieve this & have not had the time
> > to look into it further.
>
> Matt and Vladimir, can the two of you figure out between you
> how to do this? Vladimir knows the vmware side and Matt knows the VM options
> available.
Ok. From vmmon side memory wired in the next way:
m = PHYS_TO_VM_PAGE(paddr);
vm_page_wire(m);
All those pages have a file as backed media (or in another words pages
are coming from mmaped file). How file mmaped it's not handled vmmmon -
vmmon just making lock/unlock memory and translation between virtual and
physical addresses.
I hope that my five cents fill be helpful.
--
Regards,
Vladimir
P.S. Do we have any problems to make mmap (at least for linuxalator always
MAP_NOSYNC?
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