On Sep 24, 2010, at 11:44 AM, Paul Gortmaker wrote:
>>
>> From d48ebb58b8214f9faec775a5e06902f638f165cf Mon Sep 17 00:00:00 2001
> From: Tiejun Chen
> Date: Tue, 21 Sep 2010 19:31:31 +0800
> Subject: [PATCH] powerpc: Fix invalid page flags in create TLB CAM path for
> PTE_64BIT
>
> There exis
[Re: [PATCH] powerpc: Fix invalid page flags in create TLB CAM path for
PTE_64BIT] On 24/09/2010 (Fri 07:59) Benjamin Herrenschmidt wrote:
> On Thu, 2010-09-23 at 15:33 -0500, Scott Wood wrote:
> > I don't see a generic accessor that can test PTE flags for user
> > access
On Thu, 2010-09-23 at 15:33 -0500, Scott Wood wrote:
> I don't see a generic accessor that can test PTE flags for user
> access -- in the absence of one, I guess we need an ifdef here. Or at
> least put in a comment so anyone who adds a userspace use knows they
> need to fix it.
We could make up
On Thu, 23 Sep 2010 16:10:15 -0400
Paul Gortmaker wrote:
> So the possibility exists to wrongly assign the user MAS3_U bits
> to kernel (PAGE_KERNEL_X) address space via the following code fragment:
>
> if (flags & _PAGE_USER) {
>TLBCAM[index].MAS3 |= MAS3_UX | MAS3_UR;
>
