This series collects the various SME related fixes that were previously
posted separately.  These should address all the issues I am aware of so
a patch which reenables the SME configuration option is also included.

Signed-off-by: Mark Brown <broonie@kernel.org>
---
Changes in v2:
- Pull simplification of the signal restore code after the SME
  reenablement, it's not a fix but there's some code overlap.
- Comment updates.
- Link to v1: https://lore.kernel.org/r/20241203-arm64-sme-reenable-v1-0-d853479d1b77@kernel.org

---
Mark Brown (6):
      arm64/sme: Flush foreign register state in do_sme_acc()
      arm64/fp: Don't corrupt FPMR when streaming mode changes
      arm64/ptrace: Zero FPMR on streaming mode entry/exit
      arm64/signal: Avoid corruption of SME state when entering signal handler
      arm64/sme: Reenable SME
      arm64/signal: Consistently invalidate the in register FP state in restore

 arch/arm64/Kconfig              |  1 -
 arch/arm64/include/asm/fpsimd.h |  1 +
 arch/arm64/kernel/fpsimd.c      | 57 ++++++++++++++++++++++----
 arch/arm64/kernel/ptrace.c      | 12 +++++-
 arch/arm64/kernel/signal.c      | 89 +++++++++++------------------------------
 5 files changed, 84 insertions(+), 76 deletions(-)
---
base-commit: 40384c840ea1944d7c5a392e8975ed088ecf0b37
change-id: 20241202-arm64-sme-reenable-98e64c161a8e

Best regards,
-- 
Mark Brown <broonie@kernel.org>

On Wed, Dec 04, 2024 at 03:20:48PM +0000, Mark Brown wrote:
> This series collects the various SME related fixes that were previously
> posted separately.  These should address all the issues I am aware of so
> a patch which reenables the SME configuration option is also included.
> 
> Signed-off-by: Mark Brown <broonie@kernel.org>
> ---
> Changes in v2:
> - Pull simplification of the signal restore code after the SME
>   reenablement, it's not a fix but there's some code overlap.
> - Comment updates.
> - Link to v1: https://lore.kernel.org/r/20241203-arm64-sme-reenable-v1-0-d853479d1b77@kernel.org

Mark (R), are you happy with this? I know you were digging into some
other issues in this area but I'm not sure whether they invalidate the
fixes here or not.

Cheers,

Will

On Wed, Jan 08, 2025 at 12:49:58PM +0000, Will Deacon wrote:
> On Wed, Dec 04, 2024 at 03:20:48PM +0000, Mark Brown wrote:
> > This series collects the various SME related fixes that were previously
> > posted separately.  These should address all the issues I am aware of so
> > a patch which reenables the SME configuration option is also included.
> > 
> > Signed-off-by: Mark Brown <broonie@kernel.org>
> > ---
> > Changes in v2:
> > - Pull simplification of the signal restore code after the SME
> >   reenablement, it's not a fix but there's some code overlap.
> > - Comment updates.
> > - Link to v1: https://lore.kernel.org/r/20241203-arm64-sme-reenable-v1-0-d853479d1b77@kernel.org
> 
> Mark (R), are you happy with this? I know you were digging into some
> other issues in this area but I'm not sure whether they invalidate the
> fixes here or not.

Hi Will, sorry for the delay -- this has turned out to be more fractal
than I had hoped. :(

I think some of the fixes I'm working on are going to conflict with or
supersede portions of this series (e.g. portions of ptrace and signal
handling), and I'm aware of a couple more SME-specific issues that are
not addressed here.

I'll try to get that out in the next few days, and then look at this in
a bit more detail.

Rutland.