Re: [PATCH v3 00/21] powerpc/8xx: Optimise MMU TLB handling and add support of 16k pages

2014-10-14 Thread Scott Wood
On Mon, 2014-10-13 at 18:44 +0200, leroy christophe wrote:
 Le 17/09/2014 22:34, Scott Wood a écrit :
  On Wed, 2014-09-17 at 22:33 +0200, christophe leroy wrote:
  Le 17/09/2014 18:40, Scott Wood a écrit :
  On Wed, 2014-09-17 at 18:36 +0200, Christophe Leroy wrote:
  This patchset:
  1) provides several MMU TLB handling optimisation on MPC8xx.
  2) adds support of 16k pages on MPC8xx.
  All changes have been successfully tested on a custom board equipped 
  with MPC885
 
  Signed-off-by: Christophe Leroy christophe.le...@c-s.fr
  Tested-by: Christophe Leroy christophe.le...@c-s.fr
  I've already applied patches 1, 2, 4, 5, 6, 9, and 10 from the previous
  patchset -- have they changed?
 
  -Scott
 
  No, only 3, 7, 17 are changed, and 20,21 are new.
  I didn't notice you already applied some. How should I then proceed now
  for the remaining ones ? Submit a new set ?
 
  No, I'll just skip the ones I've already applied.
 
 
 I think I took into account all Joakim's and your's comments in v4.
 Since I submitted v4, I think I didn't get any new comment.
 What's the way forward to get the remaining ones applied ?

I haven't had a chance to review v4 yet.  I'm currently at conferences
and will be on vacation next week, but I will try to look at them soon
after that.

-Scott


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Re: [PATCH v3 00/21] powerpc/8xx: Optimise MMU TLB handling and add support of 16k pages

2014-10-13 Thread leroy christophe


Le 17/09/2014 22:34, Scott Wood a écrit :

On Wed, 2014-09-17 at 22:33 +0200, christophe leroy wrote:

Le 17/09/2014 18:40, Scott Wood a écrit :

On Wed, 2014-09-17 at 18:36 +0200, Christophe Leroy wrote:

This patchset:
1) provides several MMU TLB handling optimisation on MPC8xx.
2) adds support of 16k pages on MPC8xx.
All changes have been successfully tested on a custom board equipped with MPC885

Signed-off-by: Christophe Leroy christophe.le...@c-s.fr
Tested-by: Christophe Leroy christophe.le...@c-s.fr

I've already applied patches 1, 2, 4, 5, 6, 9, and 10 from the previous
patchset -- have they changed?

-Scott


No, only 3, 7, 17 are changed, and 20,21 are new.
I didn't notice you already applied some. How should I then proceed now
for the remaining ones ? Submit a new set ?


No, I'll just skip the ones I've already applied.



I think I took into account all Joakim's and your's comments in v4.
Since I submitted v4, I think I didn't get any new comment.
What's the way forward to get the remaining ones applied ?

Christophe
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[PATCH v3 00/21] powerpc/8xx: Optimise MMU TLB handling and add support of 16k pages

2014-09-17 Thread Christophe Leroy
This patchset:
1) provides several MMU TLB handling optimisation on MPC8xx.
2) adds support of 16k pages on MPC8xx.
All changes have been successfully tested on a custom board equipped with MPC885

Signed-off-by: Christophe Leroy christophe.le...@c-s.fr
Tested-by: Christophe Leroy christophe.le...@c-s.fr

---
Changes in v2:
- Patch number 10 removed, it was implementing a 16 bit alignment of the PGDIR.
It is not worth potentially wasting up to 64k of memory just for removing one
instruction (ori).
- Preserve r11 while calculating the level 2 address, therefore no more need to
save r11 into CR.

Changes in v3:
- Few fixes following review from Joachim Tjernlund
- Removed the major hack which was saving resisters in memory for CPU6 errata
- Invalidating non present TLB entries earlier (in head_8xx instead of fault.c)

 arch/powerpc/Kconfig |   2 +-
 arch/powerpc/include/asm/mmu-8xx.h   |   2 +
 arch/powerpc/include/asm/pgtable-ppc32.h |  20 ++
 arch/powerpc/include/asm/pte-8xx.h   |   7 +-
 arch/powerpc/include/asm/reg.h   |   3 +-
 arch/powerpc/kernel/head_8xx.S   | 370 -
 arch/powerpc/mm/fault.c  |   9 +-
 7 files changed, 203 insertions(+), 210 deletions(-)
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Re: [PATCH v3 00/21] powerpc/8xx: Optimise MMU TLB handling and add support of 16k pages

2014-09-17 Thread Scott Wood
On Wed, 2014-09-17 at 18:36 +0200, Christophe Leroy wrote:
 This patchset:
 1) provides several MMU TLB handling optimisation on MPC8xx.
 2) adds support of 16k pages on MPC8xx.
 All changes have been successfully tested on a custom board equipped with 
 MPC885
 
 Signed-off-by: Christophe Leroy christophe.le...@c-s.fr
 Tested-by: Christophe Leroy christophe.le...@c-s.fr

I've already applied patches 1, 2, 4, 5, 6, 9, and 10 from the previous
patchset -- have they changed?

-Scott


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Re: [PATCH v3 00/21] powerpc/8xx: Optimise MMU TLB handling and add support of 16k pages

2014-09-17 Thread christophe leroy


Le 17/09/2014 18:40, Scott Wood a écrit :

On Wed, 2014-09-17 at 18:36 +0200, Christophe Leroy wrote:

This patchset:
1) provides several MMU TLB handling optimisation on MPC8xx.
2) adds support of 16k pages on MPC8xx.
All changes have been successfully tested on a custom board equipped with MPC885

Signed-off-by: Christophe Leroy christophe.le...@c-s.fr
Tested-by: Christophe Leroy christophe.le...@c-s.fr

I've already applied patches 1, 2, 4, 5, 6, 9, and 10 from the previous
patchset -- have they changed?

-Scott


No, only 3, 7, 17 are changed, and 20,21 are new.
I didn't notice you already applied some. How should I then proceed now 
for the remaining ones ? Submit a new set ?


Thanks
Christophe

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Re: [PATCH v3 00/21] powerpc/8xx: Optimise MMU TLB handling and add support of 16k pages

2014-09-17 Thread Scott Wood
On Wed, 2014-09-17 at 22:33 +0200, christophe leroy wrote:
 Le 17/09/2014 18:40, Scott Wood a écrit :
  On Wed, 2014-09-17 at 18:36 +0200, Christophe Leroy wrote:
  This patchset:
  1) provides several MMU TLB handling optimisation on MPC8xx.
  2) adds support of 16k pages on MPC8xx.
  All changes have been successfully tested on a custom board equipped with 
  MPC885
 
  Signed-off-by: Christophe Leroy christophe.le...@c-s.fr
  Tested-by: Christophe Leroy christophe.le...@c-s.fr
  I've already applied patches 1, 2, 4, 5, 6, 9, and 10 from the previous
  patchset -- have they changed?
 
  -Scott
 
 No, only 3, 7, 17 are changed, and 20,21 are new.
 I didn't notice you already applied some. How should I then proceed now 
 for the remaining ones ? Submit a new set ?
 

No, I'll just skip the ones I've already applied.

-Scott


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