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
&
[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;
>
From: Tiejun Chen
There exists a four line chunk of code, which when configured for
64 bit address space, can incorrectly set certain page flags during
the TLB creation. It turns out that this is legacy code that is no
longer required, but since it isn't obvious why this is legacy code
or why it
