Re: [PATCH RFC v2 2/2] arm64: Support AT_HWCAP3

Mark Brown
2024-10-08T10:08:25Z

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On Tue, Oct 08, 2024 at 12:45:42PM +0530, Anshuman Khandual wrote:
> On 10/5/24 01:56, Mark Brown wrote:

> > +unsigned long cpu_get_elf_hwcap3(void)
> > +{
> > + return elf_hwcap[2];
> > +}
> > +
> > static void __init setup_boot_cpu_capabilities(void)
> > {
> > /*

> LGTM, but just curious do you have a upcoming feature to be added
> in AT_HWCAP3 soon ?

We've filled AT_HWCAP2 already and are starting on the free bits in
AT_HWCAP, there's only 29 of those remaining and we get things like the
dpISA releases often burning through 15 at a time. Like the cover says
it's not a pressing issue at this minute but whenever it does become a
pressing issue there's likely to be multiple extensions in flight and
it'll help not to have them all trying to carry the same serieses.

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