From: Michael Ellerman <michael@ellerman.id.au>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: [PATCH] powerpc/mm: Merge various PTE bits and accessors definitions
Date: Mon, 02 Mar 2009 18:38:01 +1100 [thread overview]
Message-ID: <1235979481.8526.31.camel@localhost> (raw)
In-Reply-To: <20090302062351.26F84DDFBE@ozlabs.org>
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On Mon, 2009-03-02 at 17:22 +1100, Benjamin Herrenschmidt wrote:
> Now that they are almost identical, we can merge some of the definitions
> related to the PTE format into common files.
<snip>
> +/* Protection used for kernel text. We want the debuggers to be able to
> + * set breakpoints anywhere, so don't write protect the kernel text
> + * on platforms where such control is possible.
> + */
> +#if defined(CONFIG_KGDB) || defined(CONFIG_XMON) || defined(CONFIG_BDI_SWITCH) ||\
> + defined(CONFIG_KPROBES)
> +#define PAGE_KERNEL_TEXT PAGE_KERNEL_X
> +#else
> +#define PAGE_KERNEL_TEXT PAGE_KERNEL_ROX
> +#endif
What about FTRACE? ∞TRACE etc.
cheers
--
Michael Ellerman
OzLabs, IBM Australia Development Lab
wwweb: http://michael.ellerman.id.au
phone: +61 2 6212 1183 (tie line 70 21183)
We do not inherit the earth from our ancestors,
we borrow it from our children. - S.M.A.R.T Person
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next prev parent reply other threads:[~2009-03-02 7:38 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-02 6:22 [PATCH] powerpc/mm: Merge various PTE bits and accessors definitions Benjamin Herrenschmidt
2009-03-02 6:27 ` Benjamin Herrenschmidt
2009-03-02 7:38 ` Michael Ellerman [this message]
2009-03-02 7:57 ` Benjamin Herrenschmidt
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