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Groups > linux.debian.bugs.dist > #1218548

Bug#1086503: linux: Please get HWCAP and HWCAP2 in sync between 32bits and 64bits architecture

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Source: linux
Severity: wishlist
Tags: upstream
affects: src:isa-support

Dear Maintainer,


HWCAP and HWCAP2 (used by getauxval) are not in sync between 32bits and 64bits
arch for the same processor.

for arm64 for instance see https://docs.kernel.org/arch/arm64/elf_hwcaps.html
they are more hardware caps than for arm32

Thus it is not possible to check under arm32 is a feature is enable.

Can we get an audit of other arch and get the 32/64bits in sync about feature
returned by the kernel ?

Thanks

Rouca

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Thread

Bug#1086503: linux: Please get HWCAP and HWCAP2 in sync between 32bits and 64bits architecture Bastien Roucariès <rouca@debian.org> - 2024-10-31 12:40 +0100
  Bug#1086503: The underlying request may be to add 32 bit equivalents of 64 bit caps where the feature is actually accessible from 32 bits Bastien Roucariès <rouca@debian.org> - 2024-10-31 13:50 +0100
    Bug#1086503: The underlying request may be to add 32 bit equivalents of 64 bit caps where the feature is actually accessible from 32 bits Ben Hutchings <ben@decadent.org.uk> - 2024-11-03 22:00 +0100
    Bug#1086503: The underlying request may be to add 32 bit equivalents of 64 bit caps where the feature is actually accessible from 32 bits Bastien Roucariès <rouca@debian.org> - 2024-11-05 12:30 +0100

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