Kees,
On Wed, Apr 23, 2014 at 2:09 PM, Kees Cook wrote:
> I think we can use this for the kgdb case too. Has anyone tried that
> yet? Perhaps implementing text_poke() in terms of patch_map/unmap
> calls would be best? Then the arm-specific kgdb hooks can use that,
> since it does the icache flus
On Fri, Apr 4, 2014 at 2:27 PM, Rabin Vincent wrote:
> Use fixmaps for text patching when the kernel text is read-only,
> inspired by x86. This makes jump labels and kprobes work with the
> currently available CONFIG_DEBUG_SET_MODULE_RONX and the upcoming
> CONFIG_DEBUG_RODATA options.
>
> Signed
On Mon, Apr 07, 2014 at 02:57:51PM +0100, Jon Medhurst (Tixy) wrote:
> How does fixmap cope with cache colouring? Looking at the implementation
> it looks like it doesn't and so fixmap use on ARM is possibly buggy.
>
> For the text patching case where we know there are no writeable mappings
> [1]
On Mon, 2014-04-07 at 11:04 -0700, Kees Cook wrote:
> On Mon, Apr 7, 2014 at 6:57 AM, Jon Medhurst (Tixy) wrote:
> > On Fri, 2014-04-04 at 23:27 +0200, Rabin Vincent wrote:
> >> Use fixmaps for text patching when the kernel text is read-only,
> >> inspired by x86. This makes jump labels and kprob
On Mon, Apr 7, 2014 at 6:57 AM, Jon Medhurst (Tixy) wrote:
> On Fri, 2014-04-04 at 23:27 +0200, Rabin Vincent wrote:
>> Use fixmaps for text patching when the kernel text is read-only,
>> inspired by x86. This makes jump labels and kprobes work with the
>> currently available CONFIG_DEBUG_SET_MOD
On Fri, 2014-04-04 at 23:27 +0200, Rabin Vincent wrote:
> Use fixmaps for text patching when the kernel text is read-only,
> inspired by x86. This makes jump labels and kprobes work with the
> currently available CONFIG_DEBUG_SET_MODULE_RONX and the upcoming
> CONFIG_DEBUG_RODATA options.
>
> Sig
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