From: "Kevin D. Kissell" <kevink@mips.com>
To: "Maciej W. Rozycki" <macro@linux-mips.org>
Cc: "Greg Weeks" <greg.weeks@timesys.com>,
"Ralf Baechle" <ralf@linux-mips.org>, <linux-mips@linux-mips.org>
Subject: Re: another 4kc machine check.
Date: Tue, 12 Apr 2005 18:38:14 +0200 [thread overview]
Message-ID: <00c701c53f7e$09ec56c0$10eca8c0@grendel> (raw)
In-Reply-To: Pine.LNX.4.61L.0504121610500.18606@blysk.ds.pg.gda.pl
> On Mon, 11 Apr 2005, Kevin D. Kissell wrote:
>
> > If the 4KC and 4KEC need it, so does the 4KSC (and 4KSD).
>
> But that's weird in the first place as 4Kc implements the original
> revision of MIPS32 so it does not implement "ehb". Therefore it acts just
> as an ordinary "nop", but according to the 4K manual there is no need for
> one -- the hazard between a move to EntryLo0/EntryLo1 and tlbwi/tlbwr is
> explicitly listed as 0 instructions.
Oops. Maybe I misread the patch. I thought the added NOP was between
the TLBWR and the ERET.
Kevin K.
WARNING: multiple messages have this Message-ID (diff)
From: "Kevin D. Kissell" <kevink@mips.com>
To: "Maciej W. Rozycki" <macro@linux-mips.org>
Cc: Greg Weeks <greg.weeks@timesys.com>,
Ralf Baechle <ralf@linux-mips.org>,
linux-mips@linux-mips.org
Subject: Re: another 4kc machine check.
Date: Tue, 12 Apr 2005 18:38:14 +0200 [thread overview]
Message-ID: <00c701c53f7e$09ec56c0$10eca8c0@grendel> (raw)
Message-ID: <20050412163814.Z01LgRK13SOmXqddx1hO45JXl08vk69dZBm0GSuOp7I@z> (raw)
In-Reply-To: Pine.LNX.4.61L.0504121610500.18606@blysk.ds.pg.gda.pl
> On Mon, 11 Apr 2005, Kevin D. Kissell wrote:
>
> > If the 4KC and 4KEC need it, so does the 4KSC (and 4KSD).
>
> But that's weird in the first place as 4Kc implements the original
> revision of MIPS32 so it does not implement "ehb". Therefore it acts just
> as an ordinary "nop", but according to the 4K manual there is no need for
> one -- the hazard between a move to EntryLo0/EntryLo1 and tlbwi/tlbwr is
> explicitly listed as 0 instructions.
Oops. Maybe I misread the patch. I thought the added NOP was between
the TLBWR and the ERET.
Kevin K.
next prev parent reply other threads:[~2005-04-12 16:35 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-07 14:06 another 4kc machine check Greg Weeks
2005-04-08 14:45 ` Greg Weeks
2005-04-08 16:13 ` Ralf Baechle
2005-04-08 16:45 ` Greg Weeks
2005-04-11 19:47 ` Greg Weeks
2005-04-11 20:27 ` Kevin D. Kissell
2005-04-11 20:27 ` Kevin D. Kissell
2005-04-12 14:52 ` Greg Weeks
2005-04-12 15:22 ` Maciej W. Rozycki
2005-04-12 16:38 ` Kevin D. Kissell [this message]
2005-04-12 16:38 ` Kevin D. Kissell
2005-04-12 16:52 ` Greg Weeks
2005-04-12 19:12 ` Greg Weeks
2005-04-11 20:42 ` Kevin D. Kissell
2005-04-11 20:42 ` Kevin D. Kissell
2005-06-10 16:39 ` Chris Wedgwood
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