Re: [PATCH v2] uapi/auxvec: Define AT_HWCAP3 and AT_HWCAP4 aux vector, entries

2024-02-20 Thread Michael Ellerman
On Wed, 14 Feb 2024 16:34:06 -0600, Peter Bergner wrote: > Changes from v1: > - Add Acked-by lines. > > The powerpc toolchain keeps a copy of the HWCAP bit masks in our TCB for fast > access by the __builtin_cpu_supports built-in function. The TCB space for > the HWCAP entries - which are created

Re: [PATCH v2] uapi/auxvec: Define AT_HWCAP3 and AT_HWCAP4 aux vector, entries

2024-02-15 Thread Peter Bergner
On 2/15/24 7:49 PM, Michael Ellerman wrote: > Peter Bergner writes: >> On 2/15/24 2:16 AM, Arnd Bergmann wrote: >>> On Wed, Feb 14, 2024, at 23:34, Peter Bergner wrote: Arnd, we seem to have consensus on the patch below. Is this something you could take and apply to your tree? >>>

Re: [PATCH v2] uapi/auxvec: Define AT_HWCAP3 and AT_HWCAP4 aux vector, entries

2024-02-15 Thread Michael Ellerman
Peter Bergner writes: > On 2/15/24 2:16 AM, Arnd Bergmann wrote: >> On Wed, Feb 14, 2024, at 23:34, Peter Bergner wrote: >>> The powerpc toolchain keeps a copy of the HWCAP bit masks in our TCB for >>> fast >>> access by the __builtin_cpu_supports built-in function. The TCB space for >>> the HWC

Re: [PATCH v2] uapi/auxvec: Define AT_HWCAP3 and AT_HWCAP4 aux vector, entries

2024-02-15 Thread Peter Bergner
On 2/15/24 2:16 AM, Arnd Bergmann wrote: > On Wed, Feb 14, 2024, at 23:34, Peter Bergner wrote: >> The powerpc toolchain keeps a copy of the HWCAP bit masks in our TCB for fast >> access by the __builtin_cpu_supports built-in function. The TCB space for >> the HWCAP entries - which are created in

Re: [PATCH v2] uapi/auxvec: Define AT_HWCAP3 and AT_HWCAP4 aux vector, entries

2024-02-15 Thread Arnd Bergmann
On Wed, Feb 14, 2024, at 23:34, Peter Bergner wrote: > The powerpc toolchain keeps a copy of the HWCAP bit masks in our TCB for fast > access by the __builtin_cpu_supports built-in function. The TCB space for > the HWCAP entries - which are created in pairs - is an ABI extension, so > waiting to c

[PATCH v2] uapi/auxvec: Define AT_HWCAP3 and AT_HWCAP4 aux vector, entries

2024-02-14 Thread Peter Bergner
Changes from v1: - Add Acked-by lines. The powerpc toolchain keeps a copy of the HWCAP bit masks in our TCB for fast access by the __builtin_cpu_supports built-in function. The TCB space for the HWCAP entries - which are created in pairs - is an ABI extension, so waiting to create the space for H