From: "Eli Chen" <eli@routefree.com>
To: "Dan Malek" <dan@mvista.com>, "Gabriel Paubert" <paubert@iram.es>
Cc: <brian.kuschak@skystream.com>, <linuxppc-embedded@lists.linuxppc.org>
Subject: Re: dcache BUG()
Date: Mon, 7 May 2001 16:35:18 -0700 [thread overview]
Message-ID: <03a001c0d74e$60022c70$4b00000a@foolio1> (raw)
In-Reply-To: 3AF72CA8.52163E55@mvista.com
> How can this happen? The reservation for the lwarx in 1) has
> long been broken, so this swtcx. will fail.....
>
> -- Dan
Because reservation is held per processor in the "Reservation bit", and it
doesn't seem like the 405GP checks the reservation address.
>From the PPC manual:
"Because the hardware doesn't compare reservation address when executing the
stwcx. instruction, operating systems software MUST reset the reservation if
an exception or other types of interrupt occurs to insure atomic memory
references of lwarx and stwcx. pairs."
-eli
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2001-05-07 23:35 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-05-07 19:04 dcache BUG() Eli Chen
2001-05-07 21:04 ` Dan Malek
2001-05-07 21:17 ` Dan Malek
2001-05-07 21:30 ` Tom Rini
2001-05-07 23:03 ` Dan Malek
2001-05-07 21:47 ` Eli Chen
2001-05-07 23:01 ` Dan Malek
2001-05-07 23:06 ` Gabriel Paubert
2001-05-07 23:15 ` Dan Malek
2001-05-07 23:28 ` Gabriel Paubert
2001-05-07 23:35 ` Eli Chen [this message]
2001-05-07 23:36 ` Dan Malek
2001-05-08 0:16 ` Eli Chen
2001-05-08 0:41 ` Dan Malek
2001-05-08 1:14 ` Eli Chen
2001-05-08 1:11 ` Dan Malek
2001-05-08 18:01 ` David Blythe
2001-05-08 20:27 ` Dan Malek
2001-05-08 21:34 ` David Blythe
2001-05-08 21:49 ` Dan Malek
2001-05-08 22:34 ` Ira Weiny
2001-05-08 22:53 ` Dan Malek
2001-05-08 1:37 ` Gabriel Paubert
2001-05-08 1:44 ` Dan Malek
2001-05-07 23:40 ` Gabriel Paubert
-- strict thread matches above, loose matches on Subject: below --
2001-05-12 0:44 Brian Kuschak
2001-05-12 0:57 ` Eli Chen
2001-05-14 9:28 ` Gabriel Paubert
2001-05-10 21:20 Brian Kuschak
2001-05-10 21:26 ` Dan Malek
2001-05-09 16:40 Brian Kuschak
2001-05-09 18:31 ` Dan Malek
2001-05-09 19:18 ` Gabriel Paubert
2001-05-10 18:39 ` Frank Rowand
2001-05-10 18:49 ` Gabriel Paubert
2001-05-10 19:10 ` Frank Rowand
2001-05-11 4:23 ` Paul Mielke
2001-05-11 10:09 ` Gabriel Paubert
2001-05-10 20:56 ` Dan Malek
2001-05-10 23:14 ` Cort Dougan
2001-05-11 11:01 ` Gabriel Paubert
2001-05-11 10:57 ` Gabriel Paubert
2001-05-11 18:49 ` Dan Malek
2001-05-08 17:43 Brian Kuschak
2001-05-09 11:06 ` Gabriel Paubert
2001-05-08 15:43 Brian Kuschak
2001-05-08 3:36 Brian Kuschak
2001-05-08 1:53 Brian Kuschak
2001-05-08 2:03 ` Dan Malek
2001-05-08 11:59 ` Gabriel Paubert
2001-05-08 0:40 Brian Kuschak
2001-05-07 23:01 Brian Kuschak
2001-05-07 22:19 Brian Kuschak
2001-05-07 22:35 ` Cort Dougan
2001-05-07 22:43 ` Eli Chen
2001-05-07 17:21 Brian Kuschak
2001-05-07 20:58 ` Dan Malek
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