From: Linus Torvalds <torvalds@osdl.org>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Andrew Morton <akpm@osdl.org>,
Linux Kernel list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] (urgent) ppc32: Fix CPUs with soft loaded TLB
Date: Sun, 6 Jun 2004 14:20:47 -0700 (PDT) [thread overview]
Message-ID: <Pine.LNX.4.58.0406061418450.1730@ppc970.osdl.org> (raw)
In-Reply-To: <1086556255.1859.14.camel@gaston>
On Sun, 6 Jun 2004, Benjamin Herrenschmidt wrote:
>
> The recent introduction of ptep_set_access_flags() with the optimisation
> of not flushing the TLB unfortunately broke ppc32 CPUs with no hash table.
Makes sense, applied.
However, wouldn't it make sense to have this on the ppc64 branch too?
Admittedly on ppc64, the flush_tlb_page_nohash() function would be a
no-op, since it always has the hash tables, but I'm a blue-eyed optimists,
and I'm still hoping that some day IBM will see the error of their ways,
and get rid of the hash tables entirely. At which point ppc64 too will
need to flush the TLB entry.
Linus
next prev parent reply other threads:[~2004-06-06 21:20 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-06 21:10 Benjamin Herrenschmidt
2004-06-06 21:20 ` Linus Torvalds [this message]
2004-06-06 21:42 ` Benjamin Herrenschmidt
2004-06-07 7:25 ` Pantelis Antoniou
2004-06-07 15:05 ` Benjamin Herrenschmidt
2004-06-07 15:09 ` Tom Rini
2004-06-06 21:45 ` Benjamin Herrenschmidt
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