From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: "Wang, Baojun" <wangbj@lzu.edu.cn>
Cc: linuxppc-dev@ozlabs.org, rtlinuxgpl@upv.es,
Miguel Masmano <mimastel@doctor.upv.es>
Subject: Re: ppc manual paging question
Date: Mon, 22 Oct 2007 17:34:24 +1000 [thread overview]
Message-ID: <1193038464.6745.70.camel@pasglop> (raw)
In-Reply-To: <200710221417.43544.wangbj@lzu.edu.cn>
> Sorry I didn't realized that. I've finished looking pem64b.pdf, but it's
> almost nothing like in ppc 4xx/44x.
You'll have to get yourself a 44x manual :-)
> > It's a software loaded TLB, you'll have to put translations in the TLB
> > yourself. You'll need to design your own data structures for that, tho
> > you can use a page table for tracking, like we do in linux, and then
> > have your own TLB miss handler to fill the TLB from that.
> OK, Shall I look for the DataTLBError code in head.S? I realized that I've got
> DataTLBError sometimes via BDI2000/kgdb (the fault address is within
> DataTLBError), Shall I should also look for arch/ppc/mm/fault.c?
head_44x.S is where you'll find some guidance
> > Your initial code probably need to bolt a TLB entry for the kernel
> > itself.
> I don't understand this clearly, how can I do this?
Well, you insert a TLB entry manually and avoid replacing it later on
Ben.
next prev parent reply other threads:[~2007-10-22 7:34 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200710221203.24157.wangbj@lzu.edu.cn>
2007-10-22 4:03 ` ppc manual paging question Wang, Baojun
2007-10-22 4:40 ` Nicholas Mc Guire
2007-10-22 4:50 ` Benjamin Herrenschmidt
[not found] ` <393029235.18964@lzu.edu.cn>
[not found] ` <200710221350.31688.wangbj@lzu.edu.cn>
2007-10-22 5:50 ` Wang, Baojun
2007-10-22 6:01 ` Benjamin Herrenschmidt
[not found] ` <393033430.04221@lzu.edu.cn>
[not found] ` <200710221417.43544.wangbj@lzu.edu.cn>
2007-10-22 6:17 ` Wang, Baojun
2007-10-22 7:53 ` [Rtlinuxgpl] " Nicholas Mc Guire
2007-10-22 7:34 ` Benjamin Herrenschmidt [this message]
[not found] ` <393039004.29574@lzu.edu.cn>
[not found] ` <200710221542.10592.wangbj@lzu.edu.cn>
2007-10-22 7:42 ` Wang, Baojun
2007-10-22 8:04 ` Benjamin Herrenschmidt
[not found] ` <393040796.08064@lzu.edu.cn>
[not found] ` <200710261750.54221.wangbj@lzu.edu.cn>
2007-10-26 9:50 ` Wang, Baojun
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