From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: kernel mailz <kernelmailz@googlemail.com>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: 85xx Address space query
Date: Thu, 25 Jun 2009 21:33:01 +1000 [thread overview]
Message-ID: <1245929581.22312.13.camel@pasglop> (raw)
In-Reply-To: <abe8a1fd0906241046x2e3ee7d5h6a6c0231086a6f0e@mail.gmail.com>
On Wed, 2009-06-24 at 23:16 +0530, kernel mailz wrote:
> But If the app was running with PID=1, interrupt occurs, kernel code
> gets executed in PID=1, how does the kernel handle this ? and goes
> back to PID=0, since its translations are all in PID=0
PID 0 is a special case in HW. TLB entries with TID=0 will match any PID
value.
Cheers,
Ben.
next prev parent reply other threads:[~2009-06-25 11:33 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-24 9:44 85xx Address space query kernel mailz
2009-06-24 13:15 ` Kumar Gala
2009-06-24 17:46 ` kernel mailz
2009-06-24 22:52 ` Scott Wood
2009-06-25 10:51 ` kernel mailz
2009-06-25 17:32 ` Kumar Gala
2009-06-25 17:52 ` kernel mailz
2009-06-25 17:58 ` Kumar Gala
2009-06-25 19:34 ` Scott Wood
2009-06-25 11:33 ` Benjamin Herrenschmidt [this message]
2009-06-25 11:32 ` Benjamin Herrenschmidt
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