Date: 13 Feb 2003 16:47:04 -0800 From: Arun Sharma <arun.sharma@intel.com> To: Marcel Moolenaar <marcel@xcllnt.net> Cc: freebsd-ia64@FreeBSD.ORG Subject: Re: Maxmem should be bytes ? Message-ID: <uvfzn1yev.fsf@unix-os.sc.intel.com> In-Reply-To: <20030214002346.GA1267@athlon.pn.xcllnt.net> References: <200302080111.h181Bkr26574@unix-os.sc.intel.com> <u1y2b3eb7.fsf@unix-os.sc.intel.com> <20030214002346.GA1267@athlon.pn.xcllnt.net>
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Marcel Moolenaar <marcel@xcllnt.net> writes:
> On Thu, Feb 13, 2003 at 04:18:20PM -0800, Arun Sharma wrote:
> > Arun Sharma <arun.sharma@intel.com> writes:
> >
> > > I found that my VHPT size was limited to 2**15 no matter how much
> > > memory I had. I tracked this down to the code in machdep.c:598.
> > >
> > > physmem is in units of pages and Maxmem is the number of bytes. This
> > > incorrect assignment results in a small VHPT size.
> >
> > I didn't see a response to this message. While VHPT < 2**15 isn't a
> > huge issue, this bug could result in other correctness problems.
>
> Such as?
New code that tries to use ia64_ptob(Maxmem) for something other than
VHPT sizing would be broken. And of course, it doesn't hurt to have a
bigger VHPT on large memory machines :)
-Arun
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