On Wed, Dec 12, 2018 at 07:35:44PM +0000, Will Deacon wrote:

On Fri, Dec 07, 2018 at 06:39:18PM +0000, Kristina Martsenko wrote:

quoted

This series adds support for the ARMv8.3 pointer authentication extension,
enabling userspace return address protection with GCC 7 and above.

I've pushed this out to for-next/ptr-auth with the following changes:

  * Rebased onto for-next/core
  * Dropped the GET/SET ptrace requests for now, due to fragile regset usage
  * Moved the user key state from thread_info to thread_struct
  * Removed use of VA_BITS for the PAC mask (doesn't work with 52-bit user VAs)
  * Added a patch to use _BITUL for the bit definitions in sysreg.h
  * Tidied up the HWCAP generation [need to run this past Suzuki]
  * Reduced the number of CPU caps from 6 to 4 [also need to run past Suzuki]
  * Added Reviewed-by tags

I've not merged it into for-next/core yet, because it could use some testing
and review first.

This is now in for-next/core, so I've removed the for-next/ptr-auth staging
branch.

Will

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