[GIT PULL] x86/FPU updates

[GIT PULL] x86/FPU updates

[Borislav Petkov]

Hi guys,

please pull, thanks.

---
The following changes since commit bfa76d49576599a4b9f9b7a71f23d73d6dcff735:

  Linux 3.19 (2015-02-08 18:54:22 -0800)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp.git tags/tip_x86_fpu

for you to fetch changes up to b8938491e4fcc668cf803de1bf4c224b3fa6a0ad:

  x86, fpu: Also check fpu_lazy_restore when use_eager_fpu (2015-02-17 18:58:34 +0100)

----------------------------------------------------------------
A round of updates to the FPU maze from Oleg and Rik. It should make the
code a bit more understandable/readable/streamlined and a preparation
for more cleanups and improvements in that area.

----------------------------------------------------------------
Oleg Nesterov (3):
      x86, fpu, unlazy_fpu: Don't reset thread.fpu_counter
      x86, fpu: unlazy_fpu: don't do __thread_fpu_end() if use_eager_fpu()
      x86, fpu: Kill save_init_fpu(), change math_error() to use unlazy_fpu()

Rik van Riel (5):
      x86, fpu: Move lazy restore functions up a few lines
      x86, fpu: Introduce task_disable_lazy_fpu_restore helper
      x86, fpu: Use an explicit if/else in switch_fpu_prepare
      x86, fpu: Use task_disable_lazy_fpu_restore() helper
      x86, fpu: Also check fpu_lazy_restore when use_eager_fpu

 arch/x86/include/asm/fpu-internal.h | 82 ++++++++++++++++++-------------------
 arch/x86/kernel/i387.c              | 13 +++---
 arch/x86/kernel/process.c           |  2 +-
 arch/x86/kernel/traps.c             |  2 +-
 4 files changed, 49 insertions(+), 50 deletions(-)

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
--

Re: [GIT PULL] x86/FPU updates

[Ingo Molnar]

* Borislav Petkov <bp@alien8.de> wrote:

> Hi guys,
> 
> please pull, thanks.
> 
> ---
> The following changes since commit bfa76d49576599a4b9f9b7a71f23d73d6dcff735:
> 
>   Linux 3.19 (2015-02-08 18:54:22 -0800)
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp.git tags/tip_x86_fpu
> 
> for you to fetch changes up to b8938491e4fcc668cf803de1bf4c224b3fa6a0ad:
> 
>   x86, fpu: Also check fpu_lazy_restore when use_eager_fpu (2015-02-17 18:58:34 +0100)
> 
> ----------------------------------------------------------------
> A round of updates to the FPU maze from Oleg and Rik. It should make the
> code a bit more understandable/readable/streamlined and a preparation
> for more cleanups and improvements in that area.
> 
> ----------------------------------------------------------------
> Oleg Nesterov (3):
>       x86, fpu, unlazy_fpu: Don't reset thread.fpu_counter
>       x86, fpu: unlazy_fpu: don't do __thread_fpu_end() if use_eager_fpu()
>       x86, fpu: Kill save_init_fpu(), change math_error() to use unlazy_fpu()
> 
> Rik van Riel (5):
>       x86, fpu: Move lazy restore functions up a few lines
>       x86, fpu: Introduce task_disable_lazy_fpu_restore helper
>       x86, fpu: Use an explicit if/else in switch_fpu_prepare
>       x86, fpu: Use task_disable_lazy_fpu_restore() helper
>       x86, fpu: Also check fpu_lazy_restore when use_eager_fpu
> 
>  arch/x86/include/asm/fpu-internal.h | 82 ++++++++++++++++++-------------------
>  arch/x86/kernel/i387.c              | 13 +++---
>  arch/x86/kernel/process.c           |  2 +-
>  arch/x86/kernel/traps.c             |  2 +-
>  4 files changed, 49 insertions(+), 50 deletions(-)

Pulled into tip:x86/fpu, thanks a lot!

	Ingo

[GIT PULL] x86/fpu updates

[Borislav Petkov]

Hi guys,

those three are ontop of current tip/x86/fpu; please pull,

thanks.

The following changes since commit f353e612304ba752d6b613dc02eae8116cd3e27b:

  Merge branch 'tip-x86-fpu' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp into x86/fpu (2015-02-19 11:19:05 +0100)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp.git tags/tip_x86_fpu

for you to fetch changes up to 110d7f7513bbb916b8654da9e2973ac5bed929a9:

  x86/fpu: Don't abuse FPU in kernel threads if use_eager_fpu() (2015-02-23 15:50:45 +0100)

----------------------------------------------------------------
Three more cleanups/improvements to the FPU handling code. (Oleg Nesterov)

----------------------------------------------------------------
Oleg Nesterov (3):
      x86/fpu: __kernel_fpu_begin() should clear fpu_owner_task even if use_eager_fpu()
      x86/fpu: Always allow FPU in interrupt if use_eager_fpu()
      x86/fpu: Don't abuse FPU in kernel threads if use_eager_fpu()

 arch/x86/kernel/i387.c    | 11 ++++++-----
 arch/x86/kernel/process.c |  7 +++++++
 arch/x86/kernel/xsave.c   | 13 +------------
 3 files changed, 14 insertions(+), 17 deletions(-)

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
--

Re: [GIT PULL] x86/fpu updates

[Ingo Molnar]

* Borislav Petkov <bp@alien8.de> wrote:

> Hi guys,
> 
> those three are ontop of current tip/x86/fpu; please pull,
> 
> thanks.
> 
> The following changes since commit f353e612304ba752d6b613dc02eae8116cd3e27b:
> 
>   Merge branch 'tip-x86-fpu' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp into x86/fpu (2015-02-19 11:19:05 +0100)
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp.git tags/tip_x86_fpu
> 
> for you to fetch changes up to 110d7f7513bbb916b8654da9e2973ac5bed929a9:
> 
>   x86/fpu: Don't abuse FPU in kernel threads if use_eager_fpu() (2015-02-23 15:50:45 +0100)
> 
> ----------------------------------------------------------------
> Three more cleanups/improvements to the FPU handling code. (Oleg Nesterov)
> 
> ----------------------------------------------------------------
> Oleg Nesterov (3):
>       x86/fpu: __kernel_fpu_begin() should clear fpu_owner_task even if use_eager_fpu()
>       x86/fpu: Always allow FPU in interrupt if use_eager_fpu()
>       x86/fpu: Don't abuse FPU in kernel threads if use_eager_fpu()
> 
>  arch/x86/kernel/i387.c    | 11 ++++++-----
>  arch/x86/kernel/process.c |  7 +++++++
>  arch/x86/kernel/xsave.c   | 13 +------------
>  3 files changed, 14 insertions(+), 17 deletions(-)

Pulled, thanks Boris!

	Ingo