From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: Linux/PPC Development <linuxppc-dev@ozlabs.org>
Subject: Re: PS3 early lock-up
Date: Tue, 05 Aug 2008 21:31:09 +1000 [thread overview]
Message-ID: <1217935869.24157.187.camel@pasglop> (raw)
In-Reply-To: <1217932117.24157.185.camel@pasglop>
> You could do that by adding:
>
> if (!(pteflags & (_PAGE_USER | _PAGE_RW)))
> rflags |= (1 << 1) | (1 << 63);
>
> Dbl check that the resulting mapping isn't accessible to user space though.
Make these 1UL << x, and a proper patch would have to also test
that the CPU supports the 3rd PP bit. We probably need to add
a CPU feature bit for that.
Ben.
next prev parent reply other threads:[~2008-08-05 11:31 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-04 15:48 PS3 early lock-up Geert Uytterhoeven
2008-08-04 21:44 ` Benjamin Herrenschmidt
2008-08-04 21:52 ` Benjamin Herrenschmidt
2008-08-05 0:31 ` Geoff Levand
2008-08-05 1:40 ` Benjamin Herrenschmidt
2008-08-05 9:43 ` Geert Uytterhoeven
2008-08-05 10:28 ` Benjamin Herrenschmidt
2008-08-05 11:31 ` Benjamin Herrenschmidt [this message]
2008-08-05 23:24 ` Geoff Levand
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