Date: Sat, 1 Mar 2008 07:07:01 -0800 (PST) From: fchang@cs.ubc.ca To: Roman Divacky <rdivacky@freebsd.org> Cc: freebsd-hackers@freebsd.org Subject: Re: Updating vmware3 (and missing "avail_end" from /usr/include/machine/pmap.h) Message-ID: <Pine.GSO.4.60.0803010703260.28678@cascade.cs.ubc.ca> In-Reply-To: <20080301122041.GB73096@freebsd.org> References: <Pine.GSO.4.60.0802291321580.18632@cascade.cs.ubc.ca> <20080301121701.GA73096@freebsd.org> <20080301122041.GB73096@freebsd.org>
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On Sat, 1 Mar 2008, Roman Divacky wrote: > I think you can use "ptoa(Maxmem) - round_page(MSGBUF_SIZE)", > the ptoa(Maxmem) > erm.. what I meant to say what > that hw.realmem - round_page(MSGBUF_SIZE) should work Hi: Before I saw your message, I continued my search and found an January 2007 mailing list message by Kip Macy on how to compute avail_end: http://groups.google.com/group/mailing.freebsd.current/msg/7039973c1586a8a7 static vm_paddr_t get_avail_end(void) { vm_paddr_t avail_end; int i; avail_end = phys_avail[1]; for (i = 0; phys_avail[i + 1]; i += 2) { if (phys_avail[i + 1] > avail_end) avail_end = phys_avail[i + 1]; } return avail_end; } Are the two methods equivalent? Also, how do I use hw.realmem like you suggested? I tried the following, but the file wouldn't compile: static vm_paddr_t avail_end = hw.realmem - round_page(MSGBUF_SIZE); Thank you!
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