| commit | 3ab9b88e2ac91062b6d493fe32bd101a55006c6a | |
| author | Manjunath Matti <mmatti@linux.ibm.com> | |
| Tue, 19 Mar 2024 20:29:48 +0000 (19 15:29 -0500) | ||
| committer | Peter Bergner <bergner@linux.ibm.com> | |
| Tue, 19 Mar 2024 22:19:27 +0000 (19 17:19 -0500) | ||
| tree | a13cf4a7a73bb6f77748d2bfefedce381591be56 | treesnapshot (tar.gz zip) |
| parent | 3d53d18fc71c5d9ef4773b8bce04d54b80181926 | commitdiff |
powerpc: Add HWCAP3/HWCAP4 data to TCB for Power Architecture.
This patch adds a new feature for powerpc. In order to get faster
access to the HWCAP3/HWCAP4 masks, similar to HWCAP/HWCAP2 (i.e. for
implementing __builtin_cpu_supports() in GCC) without the overhead of
reading them from the auxiliary vector, we now reserve space for them
in the TCB.
This is an ABI change for GLIBC 2.39.
Suggested-by: Peter Bergner <bergner@linux.ibm.com>
Reviewed-by: Peter Bergner <bergner@linux.ibm.com>
This patch adds a new feature for powerpc. In order to get faster
access to the HWCAP3/HWCAP4 masks, similar to HWCAP/HWCAP2 (i.e. for
implementing __builtin_cpu_supports() in GCC) without the overhead of
reading them from the auxiliary vector, we now reserve space for them
in the TCB.
This is an ABI change for GLIBC 2.39.
Suggested-by: Peter Bergner <bergner@linux.ibm.com>
Reviewed-by: Peter Bergner <bergner@linux.ibm.com>
12 files changed: