Date: Wed, 17 Jun 2009 18:30:22 -0700 From: Marcel Moolenaar <xcllnt@mac.com> To: Jeff Roberson <jroberson@jroberson.net> Cc: arch@freebsd.org, Peter Grehan <grehan@freebsd.org>, Marius Strobl <marius@alchemy.franken.de> Subject: Re: Dynamic pcpu, arm, mips, powerpc, sun, etc. help needed Message-ID: <94B46331-19AB-4174-BEDA-8B4B0A525B45@mac.com> In-Reply-To: <alpine.BSF.2.00.0906171231540.1025@desktop> References: <alpine.BSF.2.00.0906032050220.981@desktop> <20090609201127.GA50903@alchemy.franken.de> <4A2F1148.9090706@freebsd.org> <alpine.BSF.2.00.0906171231540.1025@desktop>
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On Jun 17, 2009, at 3:55 PM, Jeff Roberson wrote: > > On Tue, 9 Jun 2009, Peter Grehan wrote: > >>> As for sparc64 allocating the storage for the dynamic area >>> from end probably isn't a good idea as the pmap code assumes >>> that the range from KERNBASE to end is covered by the pages >>> allocated by and locked into the TLB for the kernel by the >>> loader >> >> Ditto for ppc. It's possible to get the additional space from >> within or after return from pmap_bootstrap() (like thread0's >> kstack, or the msgbuf). > > http://people.freebsd.org/~jeff/dpcpu.diff > > I have updated this patch based on feedback relating to various > architectures md code. I tried to model most architectures after > the way msgbuf memory was taken. I have no capacity to test > anything other than i386 and amd64. ARM is reported to work with > one minor diff. Apparently sparc64 worked with the earlier diff but > this should be cleaner. If anyone can report back on sparc64, mips, > or powerpc, I'd appreciate it. Can you fix the ia64 diff by moving the following lines up as well: /* But if the bootstrap tells us otherwise, believe it! */ if (bootinfo.bi_kernend) kernend = round_page(bootinfo.bi_kernend); Otherwise we're using the wrong kernend value for dpcpu_init() and also override what dpcpu_init() did to kernend. Thanks, -- Marcel Moolenaar xcllnt@mac.com
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