Re: [PATCH] video:uvesafb: Fix oops that uvesafb try to execute NX-protectedpage
Date: Wed Mar 28 2012 - 12:19:08 EST
On 3/27/2012 9:32 PM, Alan Cox wrote:
> On Tue, 27 Mar 2012 18:01:36 +0800
> Wang YanQing <udknight@xxxxxxxxx> wrote:
>> Ok! I try to check pcibios_enabled first, but get some opposition by Alan Cox,
>> but I want to make thing work and fix the oops, so I choice the simple way to
>> check the (__supported_pte_mask & _PAGE_NX) instead of to check this variable plus
>> pci kernel boot parameter, pci mmconfig works or not, and more, and more. It is not
>> the best method, but it works and maybe all will feel happy.
> Okay let me ask the obvious question - why is it not the best method ?
> Apart from adding a helper in the includes for the arch code of
> static inline is_nx_enabled(void)
> return !!(__supported_pte_mask & _PAGE_NX);
> is there anything else it lacks ?
maybe giving this inline function a return type ?
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