From: "Manoj Sharma" <manoj.shar@gmail.com>
To: linuxppc-dev@ozlabs.org
Subject: Hang with isync
Date: Mon, 18 Sep 2006 18:28:23 -0700 [thread overview]
Message-ID: <d6dada100609181828j1804f4f5ic0d1dd8a225980c@mail.gmail.com> (raw)
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Hi,
We use linux kernel 2.4.20 on ppc405 and the system hangs once in a while
when isync gets called in this function:
_GLOBAL(_nmask_and_or_msr)
mfmsr r0 /* Get current msr */
andc r0,r0,r3 /* And off the bits set in r3 (first parm) */
or r0,r0,r4 /* Or on the bits in r4 (second parm) */
sync /* Some chip revs have problems here... */
isync
mtmsr r0 /* Update machine state */
isync
blr /* Done */
2.5 onwards, I find that "sync; isync" has been replaced by a macro SYNC
(defined only for 601). I don't find it in any changelog and reason for the
change.
Can someone give some information on this change?
Appreciate any help.
Manoj
<linuxppc-dev@ozlabs.org>
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next reply other threads:[~2006-09-19 1:28 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-19 1:28 Manoj Sharma [this message]
2006-09-20 1:16 ` Hang with isync Manoj Sharma
2006-09-20 21:35 ` Benjamin Herrenschmidt
2006-09-20 22:31 ` Manoj Sharma
2006-09-20 22:38 ` Benjamin Herrenschmidt
2006-09-20 23:04 ` Linas Vepstas
2006-09-21 0:59 ` Manoj Sharma
2006-09-21 4:24 ` Liu Dave-r63238
2006-09-21 6:17 ` Manoj Sharma
2006-09-21 6:27 ` Liu Dave-r63238
2006-09-21 7:11 ` Manoj Sharma
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