On Fri, May 16, 2014 at 08:34:52AM -0700, Volkin, Bradley D wrote:
> Reviewed-by: Brad Volkin
>
> On Fri, May 16, 2014 at 02:22:37PM +0100, Chris Wilson wrote:
> > By exporting the ability to map user address and inserting PTEs
> > representing their backing pages into the GTT, we can exploit UM
Reviewed-by: Brad Volkin
On Fri, May 16, 2014 at 02:22:37PM +0100, Chris Wilson wrote:
> By exporting the ability to map user address and inserting PTEs
> representing their backing pages into the GTT, we can exploit UMA in order
> to utilize normal application data as a texture source or even a
By exporting the ability to map user address and inserting PTEs
representing their backing pages into the GTT, we can exploit UMA in order
to utilize normal application data as a texture source or even as a
render target (depending upon the capabilities of the chipset). This has
a number of uses, w
On Tue, 4 Feb 2014 11:56:47 +0100
Daniel Vetter wrote:
> On Mon, Feb 03, 2014 at 03:28:37PM +, Tvrtko Ursulin wrote:
> >
> > On 01/29/2014 08:34 PM, Daniel Vetter wrote:
> > >Actually I've found something else to complain about:
> > >
> > >On Tue, Jan 28, 2014 at 2:16 PM, Chris Wilson
> >
On Mon, Feb 03, 2014 at 03:28:37PM +, Tvrtko Ursulin wrote:
>
> On 01/29/2014 08:34 PM, Daniel Vetter wrote:
> >Actually I've found something else to complain about:
> >
> >On Tue, Jan 28, 2014 at 2:16 PM, Chris Wilson
> >wrote:
> >>+#define I915_USERPTR_READ_ONLY 0x1
> >
> >This smells like
On 01/30/2014 11:06 AM, Chris Wilson wrote:
On Wed, Jan 29, 2014 at 10:58:48PM +0100, Daniel Vetter wrote:
On Wed, Jan 29, 2014 at 10:53 PM, Chris Wilson wrote:
On Wed, Jan 29, 2014 at 09:25:51PM +0100, Daniel Vetter wrote:
So originally I've thought we need this due to the massive overhead o
On 01/29/2014 08:34 PM, Daniel Vetter wrote:
Actually I've found something else to complain about:
On Tue, Jan 28, 2014 at 2:16 PM, Chris Wilson wrote:
+#define I915_USERPTR_READ_ONLY 0x1
This smells like an insta-root-exploit:
1. mmap /lib/ld-linux.so as read-only
2. userptr bind that mmap
On Wed, Jan 29, 2014 at 10:58:48PM +0100, Daniel Vetter wrote:
> On Wed, Jan 29, 2014 at 10:53 PM, Chris Wilson
> wrote:
> > On Wed, Jan 29, 2014 at 09:25:51PM +0100, Daniel Vetter wrote:
> >> So originally I've thought we need this due to the massive overhead of the
> >> mmu notifier. But now wi
On Wed, Jan 29, 2014 at 10:53 PM, Chris Wilson wrote:
> On Wed, Jan 29, 2014 at 09:25:51PM +0100, Daniel Vetter wrote:
>> So originally I've thought we need this due to the massive overhead of the
>> mmu notifier. But now with the nice shared mmu notifiers I've thought that
>> overhead is gone I p
On Wed, Jan 29, 2014 at 09:25:51PM +0100, Daniel Vetter wrote:
> So originally I've thought we need this due to the massive overhead of the
> mmu notifier. But now with the nice shared mmu notifiers I've thought that
> overhead is gone I prefer to also ditch this option.
>
> Same goes about the MM
On Wed, Jan 29, 2014 at 09:34:42PM +0100, Daniel Vetter wrote:
> Actually I've found something else to complain about:
>
> On Tue, Jan 28, 2014 at 2:16 PM, Chris Wilson
> wrote:
> > +#define I915_USERPTR_READ_ONLY 0x1
>
> This smells like an insta-root-exploit:
> 1. mmap /lib/ld-linux.so as rea
Actually I've found something else to complain about:
On Tue, Jan 28, 2014 at 2:16 PM, Chris Wilson wrote:
> +#define I915_USERPTR_READ_ONLY 0x1
This smells like an insta-root-exploit:
1. mmap /lib/ld-linux.so as read-only
2. userptr bind that mmap'ed area as READ_ONLY
3. blit exploit code over
On Tue, Jan 28, 2014 at 01:16:46PM +, Chris Wilson wrote:
> By exporting the ability to map user address and inserting PTEs
> representing their backing pages into the GTT, we can exploit UMA in order
> to utilize normal application data as a texture source or even as a
> render target (dependi
By exporting the ability to map user address and inserting PTEs
representing their backing pages into the GTT, we can exploit UMA in order
to utilize normal application data as a texture source or even as a
render target (depending upon the capabilities of the chipset). This has
a number of uses, w
On Mon, Jan 27, 2014 at 09:56:12AM -0800, Volkin, Bradley D wrote:
> > +static void
> > +i915_mmu_notifier_del(struct i915_mmu_notifier *mmu,
> > + struct i915_mmu_object *mn)
> > +{
> > + bool destroy;
> > +
> > + spin_lock(&mmu->lock);
> > + interval_tree_remove(&mn->it, &mm
Hi Chris,
A few questions/comments throughout. I may be off the mark on some. Please
bear with me as I try to get more familiar with the gem code.
Thanks,
Brad
[ snip ]
On Fri, Jan 24, 2014 at 01:00:19AM -0800, Chris Wilson wrote:
> +static void
> +__i915_mmu_notifier_destroy_worker(struct work
By exporting the ability to map user address and inserting PTEs
representing their backing pages into the GTT, we can exploit UMA in order
to utilize normal application data as a texture source or even as a
render target (depending upon the capabilities of the chipset). This has
a number of uses, w
By exporting the ability to map user address and inserting PTEs
representing their backing pages into the GTT, we can exploit UMA in order
to utilize normal application data as a texture source or even as a
render target (depending upon the capabilities of the chipset). This has
a number of uses, w
By exporting the ability to map user address and inserting PTEs
representing their backing pages into the GTT, we can exploit UMA in order
to utilize normal application data as a texture source or even as a
render target (depending upon the capabilities of the chipset). This has
a number of uses, w
By exporting the ability to map user address and inserting PTEs
representing their backing pages into the GTT, we can exploit UMA in order
to utilize normal application data as a texture source or even as a
render target (depending upon the capabilities of the chipset). This has
a number of uses, w
On Mon, 8 Apr 2013 21:24:58 +0200
Daniel Vetter wrote:
> On Mon, Apr 8, 2013 at 7:40 PM, Chris Wilson wrote:
> > On Mon, Apr 08, 2013 at 07:18:11PM +0200, Daniel Vetter wrote:
> >> On Tue, Feb 12, 2013 at 02:17:22PM +, Chris Wilson wrote:
> >> > By exporting the ability to map user address a
On Mon, Apr 8, 2013 at 11:48 PM, Chris Wilson wrote:
> On Mon, Apr 08, 2013 at 09:24:58PM +0200, Daniel Vetter wrote:
>> On Mon, Apr 8, 2013 at 7:40 PM, Chris Wilson
>> wrote:
>> > On Mon, Apr 08, 2013 at 07:18:11PM +0200, Daniel Vetter wrote:
>> >> On Tue, Feb 12, 2013 at 02:17:22PM +, Chri
Daniel Vetter writes:
> On Mon, Apr 8, 2013 at 7:40 PM, Chris Wilson wrote:
>> On Mon, Apr 08, 2013 at 07:18:11PM +0200, Daniel Vetter wrote:
>>> On Tue, Feb 12, 2013 at 02:17:22PM +, Chris Wilson wrote:
>>> > By exporting the ability to map user address and inserting PTEs
>>> > representing
On Mon, Apr 08, 2013 at 09:24:58PM +0200, Daniel Vetter wrote:
> On Mon, Apr 8, 2013 at 7:40 PM, Chris Wilson wrote:
> > On Mon, Apr 08, 2013 at 07:18:11PM +0200, Daniel Vetter wrote:
> >> On Tue, Feb 12, 2013 at 02:17:22PM +, Chris Wilson wrote:
> >> > By exporting the ability to map user add
On Mon, Apr 8, 2013 at 7:40 PM, Chris Wilson wrote:
> On Mon, Apr 08, 2013 at 07:18:11PM +0200, Daniel Vetter wrote:
>> On Tue, Feb 12, 2013 at 02:17:22PM +, Chris Wilson wrote:
>> > By exporting the ability to map user address and inserting PTEs
>> > representing their backing pages into the
On Mon, Apr 08, 2013 at 07:18:11PM +0200, Daniel Vetter wrote:
> On Tue, Feb 12, 2013 at 02:17:22PM +, Chris Wilson wrote:
> > By exporting the ability to map user address and inserting PTEs
> > representing their backing pages into the GTT, we can exploit UMA in order
> > to utilize normal app
On Tue, Feb 12, 2013 at 02:17:22PM +, Chris Wilson wrote:
> By exporting the ability to map user address and inserting PTEs
> representing their backing pages into the GTT, we can exploit UMA in order
> to utilize normal application data as a texture source or even as a
> render target (dependi
On Wed, Feb 13, 2013 at 10:24:59PM +, Reese, Armin C wrote:
> Thanks for the patch, Chris.
>
> This is exactly what we were looking for to replace the VMAP feature you
> submitted a couple of years ago. We need a method to quickly move data from
> user mode allocations into video memory (by
] On
Behalf Of Chris Wilson
Sent: Tuesday, February 12, 2013 6:17 AM
To: intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH] drm/i915: Introduce mapping of user pages into
video memory (userptr) ioctl
By exporting the ability to map user address and inserting PTEs representing
their
By exporting the ability to map user address and inserting PTEs
representing their backing pages into the GTT, we can exploit UMA in order
to utilize normal application data as a texture source or even as a
render target (depending upon the capabilities of the chipset). This has
a number of uses, w
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