From: Thiemo Seufer <ths@networkno.de>
To: Franck Bui-Huu <vagabon.xyz@gmail.com>
Cc: Ralf Baechle <ralf@linux-mips.org>,
linux-mips <linux-mips@linux-mips.org>
Subject: Re: [PATCH] Make interrupt handler works for all cases
Date: Tue, 2 May 2006 19:04:36 +0100 [thread overview]
Message-ID: <20060502180436.GH5004@networkno.de> (raw)
In-Reply-To: <cda58cb80605021048n14ec2aa5ldd27e0f9a6fceb8e@mail.gmail.com>
Franck Bui-Huu wrote:
> 2006/5/2, Thiemo Seufer <ths@networkno.de>:
> >Franck Bui-Huu wrote:
> >> 2006/5/2, Ralf Baechle <ralf@linux-mips.org>:
> >> >On Tue, May 02, 2006 at 09:55:51AM +0200, Franck Bui-Huu wrote:
> >> >
> >> >> specially when the kernel is mapped.
> >> >
> >> >At which time you're on very fragile ice because TLB instructions should
> >> >better be executed from an unmapped address ...
> >> >
> >>
> >> well TLB entry used by the kernel is wired, so it should work fined,
> >> shouldn't it ?
> >
> >The architecture spec doesn't guarantee it will.
>
> having a quick look at the TLB handling code, it seems that the code
> assumes it will...
I don't know which code you are looking at, but the kernel's TLB
handling doesn't run in mapped space. (The ip27 is an exception,
I assume the R1x000 allows for mapped TLB handling.)
Thiemo
next prev parent reply other threads:[~2006-05-02 18:05 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-02 7:55 [PATCH] Make interrupt handler works for all cases Franck Bui-Huu
2006-05-02 9:41 ` Ralf Baechle
2006-05-02 10:30 ` Franck Bui-Huu
2006-05-02 10:44 ` Thiemo Seufer
2006-05-02 17:48 ` Franck Bui-Huu
2006-05-02 18:04 ` Thiemo Seufer [this message]
2006-05-04 18:34 ` Franck Bui-Huu
2006-05-02 17:43 ` Franck Bui-Huu
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