[PATCH v5] arm: Support for the PXN CPU feature on ARMv7

[Jungseung Lee]

2014-11-29 2:27 GMT+09:00 Catalin Marinas <catalin.marinas at arm.com>:
> On Fri, Nov 28, 2014 at 03:44:51PM +0000, Jungseung Lee wrote:
>> Modern ARMv7-A/R cores optionally implement below new
>> hardware feature:
>>
>> - PXN:
>> Privileged execute-never(PXN) is a security feature. PXN bit
>> determines whether the processor can execute software from
>> the region. This is effective solution against ret2usr attack.
>> On an implementation that does not include the LPAE, PXN is
>> optionally supported.
>>
>> This patch set PXN bit on user page table for preventing
>> user code execution with privilege mode.
>>
>> Reviewed-by: Catalin Marinas <catalin.marinas at arm.com>
>> Signed-off-by: Jungseung Lee <js07.lee at gmail.com>
>
> The patch looks fine to me. Unless there are other objections, you can
> send it to Russell's patch system:
>
> http://www.arm.linux.org.uk/developer/patches/
I sent patch file to the system.
Thanks for your kind  help.