Re: [PATCH v5 REPOST 0/5] ARM: omap[34]: Thumb-2 compatibility fixes

2011-03-07 Thread Dave Martin
On Fri, Mar 4, 2011 at 9:42 PM, Kevin Hilman khil...@ti.com wrote:
 Dave Martin dave.mar...@linaro.org writes:

 On Fri, Mar 4, 2011 at 5:47 PM, Tony Lindgren t...@atomide.com wrote:
 * Santosh Shilimkar santosh.shilim...@ti.com [110304 09:36]:
 
  Following up on this, it looks like I have some locally-recorded
  acks
  which didn't make it into my posting ...

 To me looks like this is ready to go, but I'd like to see Kevin's
 acks on this one as this touches the PM code.

 Or if Kevin wants to take the series, here's my ack for the series:

 Acked-by: Tony Lindgren t...@atomide.com

 Yeah, I'll queue this series.

 Thanks -- I'll wait for Kevin to comment also.

 I have to give one more round of sanity testing to this series, but
 otherwise I have no outstanding issues.  I also need to coordinate with
 Santosh on this because he has an additional cleanup series that touches
 the same code.

 Dave, just to confirm something The outstanding toolchain bugs only
 affect compiling in Thumb-2 mode, right?  IOW, if I merge just this
 series (without having the other toolchain workaround patches) we should
 still be able to compile/run fine in ARM mode, correct?

Yes, that's right.

Cheers
---Dave
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Re: [PATCH v5 REPOST 0/5] ARM: omap[34]: Thumb-2 compatibility fixes

2011-03-07 Thread Kevin Hilman
Santosh Shilimkar santosh.shilim...@ti.com writes:

 Dave,
 -Original Message-
 From: Dave Martin [mailto:dave.mar...@linaro.org]
 Sent: Friday, March 04, 2011 11:05 PM
 To: linux-arm-ker...@lists.infradead.org
 Cc: patc...@linaro.org; Tony Lindgren; Santosh Shilimkar; Jean
 Pihet; Kevin Hilman; linux-omap@vger.kernel.org; Nicolas Pitre;
 linaro-...@lists.linaro.org
 Subject: Re: [PATCH v5 REPOST 0/5] ARM: omap[34]: Thumb-2
 compatibility fixes

 On Fri, Mar 4, 2011 at 3:33 PM, Dave Martin dave.mar...@linaro.org
 wrote:
  This set of patches, along with some other patches under
  discussion on alkml, should enable omap3 and omap4 kernels to be
  built with CONFIG_THUMB2_KERNEL.
 
  This patch set builds on recent cleanup done by the omap
  maintainers.
 
  At least some of this code definitely works, most features have
  been tested successfully.  Further testing, especially of Thumb-2
  behaviour, is still welcome.
 
  In particular, I still have no Ack/Tested-by on the following
  patches, so it would be great if anyone who has an opportunity
  to do a final review / re-test can do so.
 
   * ARM: omap3: Convert END() to ENDPROC() for correct linkage with
 CONFIG_THUMB2_KERNEL
   * ARM: omap3: Thumb-2 compatibility for sram34xx.S
   * ARM: omap3: Thumb-2 compatibility for sleep34xx.S

 Following up on this, it looks like I have some locally-recorded
 acks
 which didn't make it into my posting ...

 The one patch I currently have no feedback on is this one:

   * ARM: omap4: Provide do_wfi() for Thumb-2

 You can drop this one since do_wfi()  won't be needed
 anymore after my recent series.

 http://www.spinics.net/lists/linux-omap/msg46495.html

Santosh,

I'm planning to queue/merge Dave's series as-is for 2.6.39, since it has
already received significan review  testing.

When you update your OMAP4 series, feel free to drop it as needed.

Kevin
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Re: [PATCH v5 REPOST 0/5] ARM: omap[34]: Thumb-2 compatibility fixes

2011-03-07 Thread Kevin Hilman
Dave Martin dave.mar...@linaro.org writes:

 This set of patches, along with some other patches under
 discussion on alkml, should enable omap3 and omap4 kernels to be
 built with CONFIG_THUMB2_KERNEL.

 This patch set builds on recent cleanup done by the omap
 maintainers.

 At least some of this code definitely works, most features have
 been tested successfully.  Further testing, especially of Thumb-2
 behaviour, is still welcome.

 In particular, I still have no Ack/Tested-by on the following
 patches, so it would be great if anyone who has an opportunity
 to do a final review / re-test can do so.

  * ARM: omap3: Convert END() to ENDPROC() for correct linkage with 
 CONFIG_THUMB2_KERNEL
  * ARM: omap3: Thumb-2 compatibility for sram34xx.S
  * ARM: omap3: Thumb-2 compatibility for sleep34xx.S

Jean Pihet and I have now done both retention and off-mode testing
of these, so I'll add a Tested-by for the last two for Jean and queue
these for 2.6.39 in my PM queue

  git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm.git 
for_2.6.39/pm-misc

If you want to do sanity checking with all the other OMAP PM stuff that
is queued for 2.6.39, feel free to test with my pm-core branch in the
tree above.  This has all OMAP PM related changes that will be queued
for 2.6.39 integrated.

FWIW, I also tested on 3430/n900 (retention and off-mode) and 3630/Zoom3
(retention-only, since the Si rev have has off-mode errata.)

Kevin

 Seems to work with CONFIG_SMP_ON_UP and CONFIG_THUMB2_KERNEL
 enabled on Beagle xM A2 and Panda A1.

 Thanks also to Santosh Shilimkar and Kevin Hilman for their help
 with testing so far.


 v3:
 * make SMC instruction syntax more consistent
 * remove do_wfi() in favour of the generic wfi() macro

 v4:
 * revert to the OMAP-specific do_wfi() implementation, pending
   discussion of how generic macros can/should be provided

 v5:
 * use ARM for low-level code in mach-omap2/*34xx.S, for
   correct interoperation with non-Thumb-capable firmware.

 I've stripped the Acked/Tested-bys from the major patches to
 mach-omap2/*34xx.S, since the reversion to ARM constitutes a
 significant change -- I would be grateful if people could re-
 test / re-review if they have the chance.

 For best future compatibility, I've left the changes which
 avoid architecturally deprecated features.


 Details below.

 Cheers,
 Dave


 The patches can be found, along with a buildable working tree,
 in the following repo:

 git://git.linaro.org/people/dmart/linux-2.6-arm.git

  * arm/omap-thumb2: has the patches proposed here
  * arm/omap-thumb2+merged: additionally has some patches cherry-
 picked from other trees which are needed in order for the
 patches on arm/omap-thumb2 to work usefully.
  * dirty/arm/omap-thumb2+merged: buildable test tree, which adds
 2 local patches to work around a toolchain bug.

 A working kernel config for this tree is here:
 http://people.linaro.org/~dmart/arm_omap-thumb2+v2_config :

   CONFIG_SMP_ON_UP=y
   CONFIG_THUMB2_KERNEL=y
   CONFIG_SERIAL_OMAP=y (to avoid garbage on xM; for Panda use console=ttyS2)

 (The config is derived from the linaro omap config and so turns on
 loads of modules -- don't feel you have to build them all...)


 Cherry-picked patches originated from Russell's devel tree
 and Tony Lindgren's omap-testing tree:

 http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm.git 
 devel

 git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6.git 
 omap-testing

 This series also depends on one un-merged patch to generic-ise
 the wfi() macro:

 git://git.linaro.org/people/dmart/linux-2.6-arm.git arm/wfi-macro


 Dave Martin (5):
   ARM: omap4: Provide do_wfi() for Thumb-2
   ARM: omap4: Convert END() to ENDPROC() for correct linkage with
 CONFIG_THUMB2_KERNEL
   ARM: omap3: Remove hand-encoded SMC instructions
   ARM: omap3: Thumb-2 compatibility for sram34xx.S
   ARM: omap3: Thumb-2 compatibility for sleep34xx.S

  arch/arm/mach-omap2/include/mach/omap4-common.h |4 ++
  arch/arm/mach-omap2/omap-headsmp.S  |2 +-
  arch/arm/mach-omap2/omap44xx-smc.S  |8 ++--
  arch/arm/mach-omap2/sleep34xx.S |   62 ++
  arch/arm/mach-omap2/sram34xx.S  |   36 ++---
  5 files changed, 87 insertions(+), 25 deletions(-)
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RE: [PATCH v5 REPOST 0/5] ARM: omap[34]: Thumb-2 compatibility fixes

2011-03-07 Thread Santosh Shilimkar
 -Original Message-
 From: Kevin Hilman [mailto:khil...@ti.com]
 Sent: Tuesday, March 08, 2011 3:05 AM
 To: Santosh Shilimkar
 Cc: Dave Martin; linux-arm-ker...@lists.infradead.org;
 patc...@linaro.org; Tony Lindgren; Jean Pihet-XID; linux-
 o...@vger.kernel.org; Nicolas Pitre; linaro-...@lists.linaro.org
 Subject: Re: [PATCH v5 REPOST 0/5] ARM: omap[34]: Thumb-2
 compatibility fixes

 Santosh Shilimkar santosh.shilim...@ti.com writes:

  Dave,
  -Original Message-
  From: Dave Martin [mailto:dave.mar...@linaro.org]
  Sent: Friday, March 04, 2011 11:05 PM
  To: linux-arm-ker...@lists.infradead.org
  Cc: patc...@linaro.org; Tony Lindgren; Santosh Shilimkar; Jean
  Pihet; Kevin Hilman; linux-omap@vger.kernel.org; Nicolas Pitre;
  linaro-...@lists.linaro.org
  Subject: Re: [PATCH v5 REPOST 0/5] ARM: omap[34]: Thumb-2
  compatibility fixes
 
  On Fri, Mar 4, 2011 at 3:33 PM, Dave Martin
 dave.mar...@linaro.org
  wrote:
   This set of patches, along with some other patches under
   discussion on alkml, should enable omap3 and omap4 kernels to
 be
   built with CONFIG_THUMB2_KERNEL.
  
   This patch set builds on recent cleanup done by the omap
   maintainers.
  
   At least some of this code definitely works, most features have
   been tested successfully.  Further testing, especially of
 Thumb-2
   behaviour, is still welcome.
  
   In particular, I still have no Ack/Tested-by on the following
   patches, so it would be great if anyone who has an opportunity
   to do a final review / re-test can do so.
  
    * ARM: omap3: Convert END() to ENDPROC() for correct linkage
 with
  CONFIG_THUMB2_KERNEL
    * ARM: omap3: Thumb-2 compatibility for sram34xx.S
    * ARM: omap3: Thumb-2 compatibility for sleep34xx.S
 
  Following up on this, it looks like I have some locally-recorded
  acks
  which didn't make it into my posting ...
 
  The one patch I currently have no feedback on is this one:
 
* ARM: omap4: Provide do_wfi() for Thumb-2
 
  You can drop this one since do_wfi()  won't be needed
  anymore after my recent series.
 
  http://www.spinics.net/lists/linux-omap/msg46495.html

 Santosh,

 I'm planning to queue/merge Dave's series as-is for 2.6.39, since it
 has
 already received significan review  testing.

 When you update your OMAP4 series, feel free to drop it as needed.

Fine with me.

Regards,
Santosh
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Re: [PATCH v5 REPOST 0/5] ARM: omap[34]: Thumb-2 compatibility fixes

2011-03-04 Thread Dave Martin
On Fri, Mar 4, 2011 at 3:33 PM, Dave Martin dave.mar...@linaro.org wrote:
 This set of patches, along with some other patches under
 discussion on alkml, should enable omap3 and omap4 kernels to be
 built with CONFIG_THUMB2_KERNEL.

 This patch set builds on recent cleanup done by the omap
 maintainers.

 At least some of this code definitely works, most features have
 been tested successfully.  Further testing, especially of Thumb-2
 behaviour, is still welcome.

 In particular, I still have no Ack/Tested-by on the following
 patches, so it would be great if anyone who has an opportunity
 to do a final review / re-test can do so.

  * ARM: omap3: Convert END() to ENDPROC() for correct linkage with 
 CONFIG_THUMB2_KERNEL
  * ARM: omap3: Thumb-2 compatibility for sram34xx.S
  * ARM: omap3: Thumb-2 compatibility for sleep34xx.S

Following up on this, it looks like I have some locally-recorded acks
which didn't make it into my posting ...

The one patch I currently have no feedback on is this one:

  * ARM: omap4: Provide do_wfi() for Thumb-2

Cheers
---Dave
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RE: [PATCH v5 REPOST 0/5] ARM: omap[34]: Thumb-2 compatibility fixes

2011-03-04 Thread Santosh Shilimkar
Dave,
 -Original Message-
 From: Dave Martin [mailto:dave.mar...@linaro.org]
 Sent: Friday, March 04, 2011 11:05 PM
 To: linux-arm-ker...@lists.infradead.org
 Cc: patc...@linaro.org; Tony Lindgren; Santosh Shilimkar; Jean
 Pihet; Kevin Hilman; linux-omap@vger.kernel.org; Nicolas Pitre;
 linaro-...@lists.linaro.org
 Subject: Re: [PATCH v5 REPOST 0/5] ARM: omap[34]: Thumb-2
 compatibility fixes

 On Fri, Mar 4, 2011 at 3:33 PM, Dave Martin dave.mar...@linaro.org
 wrote:
  This set of patches, along with some other patches under
  discussion on alkml, should enable omap3 and omap4 kernels to be
  built with CONFIG_THUMB2_KERNEL.
 
  This patch set builds on recent cleanup done by the omap
  maintainers.
 
  At least some of this code definitely works, most features have
  been tested successfully.  Further testing, especially of Thumb-2
  behaviour, is still welcome.
 
  In particular, I still have no Ack/Tested-by on the following
  patches, so it would be great if anyone who has an opportunity
  to do a final review / re-test can do so.
 
   * ARM: omap3: Convert END() to ENDPROC() for correct linkage with
 CONFIG_THUMB2_KERNEL
   * ARM: omap3: Thumb-2 compatibility for sram34xx.S
   * ARM: omap3: Thumb-2 compatibility for sleep34xx.S

 Following up on this, it looks like I have some locally-recorded
 acks
 which didn't make it into my posting ...

 The one patch I currently have no feedback on is this one:

   * ARM: omap4: Provide do_wfi() for Thumb-2

You can drop this one since do_wfi()  won't be needed
anymore after my recent series.

http://www.spinics.net/lists/linux-omap/msg46495.html
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Re: [PATCH v5 REPOST 0/5] ARM: omap[34]: Thumb-2 compatibility fixes

2011-03-04 Thread Tony Lindgren
* Santosh Shilimkar santosh.shilim...@ti.com [110304 09:36]:
 
  Following up on this, it looks like I have some locally-recorded
  acks
  which didn't make it into my posting ...

To me looks like this is ready to go, but I'd like to see Kevin's
acks on this one as this touches the PM code.

Or if Kevin wants to take the series, here's my ack for the series:

Acked-by: Tony Lindgren t...@atomide.com

Regards,

Tony
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Re: [PATCH v5 REPOST 0/5] ARM: omap[34]: Thumb-2 compatibility fixes

2011-03-04 Thread Dave Martin
On Fri, Mar 4, 2011 at 5:47 PM, Tony Lindgren t...@atomide.com wrote:
 * Santosh Shilimkar santosh.shilim...@ti.com [110304 09:36]:
 
  Following up on this, it looks like I have some locally-recorded
  acks
  which didn't make it into my posting ...

 To me looks like this is ready to go, but I'd like to see Kevin's
 acks on this one as this touches the PM code.

 Or if Kevin wants to take the series, here's my ack for the series:

 Acked-by: Tony Lindgren t...@atomide.com

Thanks -- I'll wait for Kevin to comment also.

Cheers
---Dave
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Re: [PATCH v5 REPOST 0/5] ARM: omap[34]: Thumb-2 compatibility fixes

2011-03-04 Thread Kevin Hilman
Dave Martin dave.mar...@linaro.org writes:

 On Fri, Mar 4, 2011 at 5:47 PM, Tony Lindgren t...@atomide.com wrote:
 * Santosh Shilimkar santosh.shilim...@ti.com [110304 09:36]:
 
  Following up on this, it looks like I have some locally-recorded
  acks
  which didn't make it into my posting ...

 To me looks like this is ready to go, but I'd like to see Kevin's
 acks on this one as this touches the PM code.

 Or if Kevin wants to take the series, here's my ack for the series:

 Acked-by: Tony Lindgren t...@atomide.com

Yeah, I'll queue this series.

 Thanks -- I'll wait for Kevin to comment also.

I have to give one more round of sanity testing to this series, but
otherwise I have no outstanding issues.  I also need to coordinate with
Santosh on this because he has an additional cleanup series that touches
the same code.

Dave, just to confirm something The outstanding toolchain bugs only
affect compiling in Thumb-2 mode, right?  IOW, if I merge just this
series (without having the other toolchain workaround patches) we should
still be able to compile/run fine in ARM mode, correct?

Kevin


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Re: [PATCH v5 REPOST 0/5] ARM: omap[34]: Thumb-2 compatibility fixes

2011-03-04 Thread Nicolas Pitre
On Fri, 4 Mar 2011, Kevin Hilman wrote:

 Dave, just to confirm something The outstanding toolchain bugs only
 affect compiling in Thumb-2 mode, right?  IOW, if I merge just this
 series (without having the other toolchain workaround patches) we should
 still be able to compile/run fine in ARM mode, correct?

Correct.


Nicolas
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