Re: [PATCH] video:uvesafb: Fix oops that uvesafb try to execute NX-protected page

On 03/27/2012 01:32 PM, Alan Cox wrote:

On Tue, 27 Mar 2012 18:01:36 +0800
Wang YanQing [off-list ref] wrote:

quoted

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.

Wang, could you please write a better commit message, at least you could
include the oops that your patch fixes.

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);
	}

As this check is already done in a few other places I think there should
be a separate patch that adds this helper and ports all existing code to
use it.

So, does anyone have any objection against me taking this patch as is?


Thanks,

Florian Tobias Schandinat