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 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 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
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 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 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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