[PATCH v2 0/4] arm64: Add AT_HWCAP3

[Mark Brown]

On Mon, Jun 20, 2022 at 01:54:47PM +0100, Mark Brown wrote:
> Currently for arm64 we expose hwcaps to userspace using the low 32 bits
> of AT_HWCAP and AT_HWCAP2. Due to the ever expanding capabilties of the
> architecture we have now allocated all the available bits in this scheme
> so we need to expand, either using the higher bits or adding a new
> AT_HWCAP3. Discussions with glibc developers suggested that AT_HWCAP3
> would be cleaner for them so the series adopts that approach.

This discussion appears to have ground to a halt.  Szabolcs prefers
AT_HWCAP3, Catalin using the high bits of AT_HWCAP2 for now and nobody
else said anything.  I don't have strong preferences either way but
wonder if it's worth defining AT_HWCAP3 even if we start allocating more
bits from AT_HWCAP2 so that it's got more time to percolate through
libcs and so on before it's actually needed.

What should we do here?
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 488 bytes
Desc: not available
URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20220705/fbf76b82/attachment.sig>