On Mon, Nov 19, 2012 at 02:48:06PM +, Russell King - ARM Linux wrote:
> On Mon, Nov 19, 2012 at 04:32:36PM +0200, Ville Syrjälä wrote:
> > On Thu, Nov 15, 2012 at 02:39:41PM +, Arnd Bergmann wrote:
> > > On Thursday 15 November 2012, Rob Clark wrote:
> > > > > I still haven't heard a
On Mon, Nov 19, 2012 at 04:32:36PM +0200, Ville Syrjälä wrote:
> On Thu, Nov 15, 2012 at 02:39:41PM +, Arnd Bergmann wrote:
> > On Thursday 15 November 2012, Rob Clark wrote:
> > > > I still haven't heard a conclusive argument why we need to use
> > > > get_user()
> > > > rather than
On Thu, Nov 15, 2012 at 02:39:41PM +, Arnd Bergmann wrote:
> On Thursday 15 November 2012, Rob Clark wrote:
> > > I still haven't heard a conclusive argument why we need to use get_user()
> > > rather than copy_from_user() in the DRM code. Is this about a fast path
> > > where you want to
On Thu, Nov 15, 2012 at 02:39:41PM +, Arnd Bergmann wrote:
On Thursday 15 November 2012, Rob Clark wrote:
I still haven't heard a conclusive argument why we need to use get_user()
rather than copy_from_user() in the DRM code. Is this about a fast path
where you want to shave off a
On Mon, Nov 19, 2012 at 04:32:36PM +0200, Ville Syrjälä wrote:
On Thu, Nov 15, 2012 at 02:39:41PM +, Arnd Bergmann wrote:
On Thursday 15 November 2012, Rob Clark wrote:
I still haven't heard a conclusive argument why we need to use
get_user()
rather than copy_from_user() in the
On Mon, Nov 19, 2012 at 02:48:06PM +, Russell King - ARM Linux wrote:
On Mon, Nov 19, 2012 at 04:32:36PM +0200, Ville Syrjälä wrote:
On Thu, Nov 15, 2012 at 02:39:41PM +, Arnd Bergmann wrote:
On Thursday 15 November 2012, Rob Clark wrote:
I still haven't heard a conclusive
On Thursday 15 November 2012, Rob Clark wrote:
>
> From: Rob Clark
>
> A new atomic modeset/pageflip ioctl being developed in DRM requires
> get_user() to work for 64bit types (in addition to just put_user()).
>
> v1: original
> v2: pass correct size to check_uaccess, and better handling of
On Thursday 15 November 2012, Rob Clark wrote:
From: Rob Clark r...@ti.com
A new atomic modeset/pageflip ioctl being developed in DRM requires
get_user() to work for 64bit types (in addition to just put_user()).
v1: original
v2: pass correct size to check_uaccess, and better handling of
On Thu, 15 Nov 2012, Rob Clark wrote:
> From: Rob Clark
>
> A new atomic modeset/pageflip ioctl being developed in DRM requires
> get_user() to work for 64bit types (in addition to just put_user()).
>
> v1: original
> v2: pass correct size to check_uaccess, and better handling of narrowing
>
From: Rob Clark
A new atomic modeset/pageflip ioctl being developed in DRM requires
get_user() to work for 64bit types (in addition to just put_user()).
v1: original
v2: pass correct size to check_uaccess, and better handling of narrowing
double word read with __get_user_xb() (Russell
On Thursday 15 November 2012, Rob Clark wrote:
> > I still haven't heard a conclusive argument why we need to use get_user()
> > rather than copy_from_user() in the DRM code. Is this about a fast path
> > where you want to shave off a few cycles for each call, or does this
> > simplify the code
On Thu, Nov 15, 2012 at 7:39 AM, Arnd Bergmann wrote:
> On Thursday 15 November 2012, Rob Clark wrote:
>> On Thu, Nov 15, 2012 at 3:19 AM, Arnd Bergmann wrote:
>> > On Tuesday 13 November 2012, Russell King - ARM Linux wrote:
>> >> You're missing something; that is one of the greatest powers of
On Thursday 15 November 2012, Rob Clark wrote:
> On Thu, Nov 15, 2012 at 3:19 AM, Arnd Bergmann wrote:
> > On Tuesday 13 November 2012, Russell King - ARM Linux wrote:
> >> You're missing something; that is one of the greatest powers of open
> >> source. The many eyes (and minds) effect.
On Thu, Nov 15, 2012 at 3:19 AM, Arnd Bergmann wrote:
> On Tuesday 13 November 2012, Russell King - ARM Linux wrote:
>> You're missing something; that is one of the greatest powers of open
>> source. The many eyes (and minds) effect. Someone out there probably
>> has a solution to whatever
On Tuesday 13 November 2012, Russell King - ARM Linux wrote:
> You're missing something; that is one of the greatest powers of open
> source. The many eyes (and minds) effect. Someone out there probably
> has a solution to whatever problem, the trick is to find that person. :)
>
> I think we
On Tuesday 13 November 2012, Russell King - ARM Linux wrote:
You're missing something; that is one of the greatest powers of open
source. The many eyes (and minds) effect. Someone out there probably
has a solution to whatever problem, the trick is to find that person. :)
I think we have a
On Thu, Nov 15, 2012 at 3:19 AM, Arnd Bergmann a...@arndb.de wrote:
On Tuesday 13 November 2012, Russell King - ARM Linux wrote:
You're missing something; that is one of the greatest powers of open
source. The many eyes (and minds) effect. Someone out there probably
has a solution to
On Thursday 15 November 2012, Rob Clark wrote:
On Thu, Nov 15, 2012 at 3:19 AM, Arnd Bergmann a...@arndb.de wrote:
On Tuesday 13 November 2012, Russell King - ARM Linux wrote:
You're missing something; that is one of the greatest powers of open
source. The many eyes (and minds) effect.
On Thu, Nov 15, 2012 at 7:39 AM, Arnd Bergmann a...@arndb.de wrote:
On Thursday 15 November 2012, Rob Clark wrote:
On Thu, Nov 15, 2012 at 3:19 AM, Arnd Bergmann a...@arndb.de wrote:
On Tuesday 13 November 2012, Russell King - ARM Linux wrote:
You're missing something; that is one of the
On Thursday 15 November 2012, Rob Clark wrote:
I still haven't heard a conclusive argument why we need to use get_user()
rather than copy_from_user() in the DRM code. Is this about a fast path
where you want to shave off a few cycles for each call, or does this
simplify the code structure,
From: Rob Clark r...@ti.com
A new atomic modeset/pageflip ioctl being developed in DRM requires
get_user() to work for 64bit types (in addition to just put_user()).
v1: original
v2: pass correct size to check_uaccess, and better handling of narrowing
double word read with __get_user_xb()
On Thu, 15 Nov 2012, Rob Clark wrote:
From: Rob Clark r...@ti.com
A new atomic modeset/pageflip ioctl being developed in DRM requires
get_user() to work for 64bit types (in addition to just put_user()).
v1: original
v2: pass correct size to check_uaccess, and better handling of narrowing
From: Rob Clark
A new atomic modeset/pageflip ioctl being developed in DRM requires
get_user() to work for 64bit types (in addition to just put_user()).
v1: original
v2: pass correct size to check_uaccess, and better handling of narrowing
double word read with __get_user_xb() (Russell
On Tue, Nov 13, 2012 at 09:11:09AM +, Arnd Bergmann wrote:
> On Tuesday 13 November 2012, Rob Clark wrote:
> > right, that is what I was worried about.. but what about something
> > along the lines of:
> >
> > case 8: { \
> >
On Mon, Nov 12, 2012 at 06:31:50PM -0600, Rob Clark wrote:
> right, that is what I was worried about.. but what about something
> along the lines of:
>
> case 8: { \
> if (sizeof(x) < 8)
On Tuesday 13 November 2012, Rob Clark wrote:
> right, that is what I was worried about.. but what about something
> along the lines of:
>
> case 8: { \
> if (sizeof(x) < 8) \
>
On Tuesday 13 November 2012, Rob Clark wrote:
right, that is what I was worried about.. but what about something
along the lines of:
case 8: { \
if (sizeof(x) 8) \
On Mon, Nov 12, 2012 at 06:31:50PM -0600, Rob Clark wrote:
right, that is what I was worried about.. but what about something
along the lines of:
case 8: { \
if (sizeof(x) 8) \
On Tue, Nov 13, 2012 at 09:11:09AM +, Arnd Bergmann wrote:
On Tuesday 13 November 2012, Rob Clark wrote:
right, that is what I was worried about.. but what about something
along the lines of:
case 8: { \
From: Rob Clark r...@ti.com
A new atomic modeset/pageflip ioctl being developed in DRM requires
get_user() to work for 64bit types (in addition to just put_user()).
v1: original
v2: pass correct size to check_uaccess, and better handling of narrowing
double word read with __get_user_xb()
On Mon, Nov 12, 2012 at 5:53 PM, Russell King - ARM Linux
wrote:
> On Mon, Nov 12, 2012 at 05:33:41PM -0600, Rob Clark wrote:
>> I'm sort of thinking maybe we want to change 'switch (sizeof(*(__p)))'
>> with 'switch (sizeof(typeof(x)))' in case someone ignores the compiler
>> warning when they
On Mon, Nov 12, 2012 at 05:33:41PM -0600, Rob Clark wrote:
> I'm sort of thinking maybe we want to change 'switch (sizeof(*(__p)))'
> with 'switch (sizeof(typeof(x)))' in case someone ignores the compiler
> warning when they try something like:
Definitely not. Ttype of access is controlled by
On Mon, Nov 12, 2012 at 5:08 PM, Russell King - ARM Linux
wrote:
> On Mon, Nov 12, 2012 at 01:58:32PM -0600, Rob Clark wrote:
>> On Mon, Nov 12, 2012 at 1:27 PM, Russell King - ARM Linux
>> wrote:
>> > On Fri, Nov 09, 2012 at 03:17:33PM -0600, Rob Clark wrote:
>> >> From: Rob Clark
>> >>
>> >>
On Mon, Nov 12, 2012 at 01:58:32PM -0600, Rob Clark wrote:
> On Mon, Nov 12, 2012 at 1:27 PM, Russell King - ARM Linux
> wrote:
> > On Fri, Nov 09, 2012 at 03:17:33PM -0600, Rob Clark wrote:
> >> From: Rob Clark
> >>
> >> A new atomic modeset/pageflip ioctl being developed in DRM requires
> >>
On Mon, Nov 12, 2012 at 1:27 PM, Russell King - ARM Linux
wrote:
> On Fri, Nov 09, 2012 at 03:17:33PM -0600, Rob Clark wrote:
>> From: Rob Clark
>>
>> A new atomic modeset/pageflip ioctl being developed in DRM requires
>> get_user() to work for 64bit types (in addition to just put_user()).
>
>
On Fri, Nov 09, 2012 at 03:17:33PM -0600, Rob Clark wrote:
> From: Rob Clark
>
> A new atomic modeset/pageflip ioctl being developed in DRM requires
> get_user() to work for 64bit types (in addition to just put_user()).
NAK.
(I did write a better email explaining all the ins and outs of why
On Mon, Nov 12, 2012 at 8:38 AM, Will Deacon wrote:
> On Mon, Nov 12, 2012 at 01:46:57PM +, Rob Clark wrote:
>> On Mon, Nov 12, 2012 at 4:46 AM, Will Deacon wrote:
>> > On Fri, Nov 09, 2012 at 09:17:33PM +, Rob Clark wrote:
>> >> @@ -122,22 +124,35 @@ extern int __get_user_4(void *);
>>
On Mon, Nov 12, 2012 at 01:46:57PM +, Rob Clark wrote:
> On Mon, Nov 12, 2012 at 4:46 AM, Will Deacon wrote:
> > On Fri, Nov 09, 2012 at 09:17:33PM +, Rob Clark wrote:
> >> @@ -122,22 +124,35 @@ extern int __get_user_4(void *);
> >> ({
On Mon, Nov 12, 2012 at 4:46 AM, Will Deacon wrote:
> On Fri, Nov 09, 2012 at 09:17:33PM +, Rob Clark wrote:
>> From: Rob Clark
>>
>> A new atomic modeset/pageflip ioctl being developed in DRM requires
>> get_user() to work for 64bit types (in addition to just put_user()).
>>
>>
On Fri, Nov 09, 2012 at 09:17:33PM +, Rob Clark wrote:
> From: Rob Clark
>
> A new atomic modeset/pageflip ioctl being developed in DRM requires
> get_user() to work for 64bit types (in addition to just put_user()).
>
> Signed-off-by: Rob Clark
> ---
> arch/arm/include/asm/uaccess.h | 25
On Fri, Nov 09, 2012 at 09:17:33PM +, Rob Clark wrote:
From: Rob Clark r...@ti.com
A new atomic modeset/pageflip ioctl being developed in DRM requires
get_user() to work for 64bit types (in addition to just put_user()).
Signed-off-by: Rob Clark r...@ti.com
---
On Mon, Nov 12, 2012 at 4:46 AM, Will Deacon will.dea...@arm.com wrote:
On Fri, Nov 09, 2012 at 09:17:33PM +, Rob Clark wrote:
From: Rob Clark r...@ti.com
A new atomic modeset/pageflip ioctl being developed in DRM requires
get_user() to work for 64bit types (in addition to just
On Mon, Nov 12, 2012 at 01:46:57PM +, Rob Clark wrote:
On Mon, Nov 12, 2012 at 4:46 AM, Will Deacon will.dea...@arm.com wrote:
On Fri, Nov 09, 2012 at 09:17:33PM +, Rob Clark wrote:
@@ -122,22 +124,35 @@ extern int __get_user_4(void *);
({
On Mon, Nov 12, 2012 at 8:38 AM, Will Deacon will.dea...@arm.com wrote:
On Mon, Nov 12, 2012 at 01:46:57PM +, Rob Clark wrote:
On Mon, Nov 12, 2012 at 4:46 AM, Will Deacon will.dea...@arm.com wrote:
On Fri, Nov 09, 2012 at 09:17:33PM +, Rob Clark wrote:
@@ -122,22 +124,35 @@ extern
On Fri, Nov 09, 2012 at 03:17:33PM -0600, Rob Clark wrote:
From: Rob Clark r...@ti.com
A new atomic modeset/pageflip ioctl being developed in DRM requires
get_user() to work for 64bit types (in addition to just put_user()).
NAK.
(I did write a better email explaining all the ins and outs of
On Mon, Nov 12, 2012 at 1:27 PM, Russell King - ARM Linux
li...@arm.linux.org.uk wrote:
On Fri, Nov 09, 2012 at 03:17:33PM -0600, Rob Clark wrote:
From: Rob Clark r...@ti.com
A new atomic modeset/pageflip ioctl being developed in DRM requires
get_user() to work for 64bit types (in addition to
On Mon, Nov 12, 2012 at 01:58:32PM -0600, Rob Clark wrote:
On Mon, Nov 12, 2012 at 1:27 PM, Russell King - ARM Linux
li...@arm.linux.org.uk wrote:
On Fri, Nov 09, 2012 at 03:17:33PM -0600, Rob Clark wrote:
From: Rob Clark r...@ti.com
A new atomic modeset/pageflip ioctl being developed in
On Mon, Nov 12, 2012 at 5:08 PM, Russell King - ARM Linux
li...@arm.linux.org.uk wrote:
On Mon, Nov 12, 2012 at 01:58:32PM -0600, Rob Clark wrote:
On Mon, Nov 12, 2012 at 1:27 PM, Russell King - ARM Linux
li...@arm.linux.org.uk wrote:
On Fri, Nov 09, 2012 at 03:17:33PM -0600, Rob Clark wrote:
On Mon, Nov 12, 2012 at 05:33:41PM -0600, Rob Clark wrote:
I'm sort of thinking maybe we want to change 'switch (sizeof(*(__p)))'
with 'switch (sizeof(typeof(x)))' in case someone ignores the compiler
warning when they try something like:
Definitely not. Ttype of access is controlled by the
On Mon, Nov 12, 2012 at 5:53 PM, Russell King - ARM Linux
li...@arm.linux.org.uk wrote:
On Mon, Nov 12, 2012 at 05:33:41PM -0600, Rob Clark wrote:
I'm sort of thinking maybe we want to change 'switch (sizeof(*(__p)))'
with 'switch (sizeof(typeof(x)))' in case someone ignores the compiler
From: Rob Clark
A new atomic modeset/pageflip ioctl being developed in DRM requires
get_user() to work for 64bit types (in addition to just put_user()).
Signed-off-by: Rob Clark
---
arch/arm/include/asm/uaccess.h | 25 -
arch/arm/lib/getuser.S | 17
From: Rob Clark r...@ti.com
A new atomic modeset/pageflip ioctl being developed in DRM requires
get_user() to work for 64bit types (in addition to just put_user()).
Signed-off-by: Rob Clark r...@ti.com
---
arch/arm/include/asm/uaccess.h | 25 -
arch/arm/lib/getuser.S
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