Date: Tue, 26 Jul 2011 21:01:54 +0200 From: "K. Macy" <kmacy@freebsd.org> To: Sean Bruno <seanbru@yahoo-inc.com> Cc: "freebsd-xen@freebsd.org" <freebsd-xen@freebsd.org> Subject: Re: FreeBSD Xen PV i386 --> 855MB Max? Message-ID: <CAHM0Q_PkHDz8sgBKe_oep6xOtXE2U4JOYohahv7TzJPAniqGAg@mail.gmail.com> In-Reply-To: <1311705757.3927.10.camel@hitfishpass-lx.corp.yahoo.com> References: <1311705757.3927.10.camel@hitfishpass-lx.corp.yahoo.com>
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It's an artifact of the initialization code and how the xen domain builder configures the initial mapped memory. I've come against this and fixed this issue in the past but I guess either the domain builder has changed or the initial code has bit rotted. I can't commit so ask Colin if he can fix. Cheers On Tuesday, July 26, 2011, Sean Bruno <seanbru@yahoo-inc.com> wrote: > I note that if I scale the i386 PV Xen kernel past 855MB, I get an insta > panic at boot. I assume that there's a hard limit on the amount of RAMS > we can use here? > > Using config file "./ref8-xen32". > Started domain ref8-xen32 (id=133) > WARNING: loader(8) metadata is missing! > GDB: no debug ports present > KDB: debugger backends: ddb > KDB: current backend: ddb > Copyright (c) 1992-2011 The FreeBSD Project. > Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 > The Regents of the University of California. All rights > reserved. > FreeBSD is a registered trademark of The FreeBSD Foundation. > FreeBSD 8.2-STABLE #1 r224449: Tue Jul 26 09:53:36 PDT 2011 > > sbruno@ref8-xen32.freebsd.org:/usr/obj/dumpster/scratch/sbruno-scratch/8/sys/XEN i386 > WARNING: WITNESS option enabled, expect reduced performance. > panic: pmap_init: page table page is out of range > cpuid = 0 > KDB: enter: panic > [thread pid 0 tid 0 ] > Stopped at 0xc010e68a: movl $0,0xc03f20b4 > > > _______________________________________________ > freebsd-xen@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-xen > To unsubscribe, send any mail to "freebsd-xen-unsubscribe@freebsd.org" >
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