Re: Can we drop upstream Linux x32 support?

Please don't drop x86 support from the Linux kernel ! You may not
realize it, but there are plenty of people who care about x86 systems.
I have a good old Pentium 4 based computer which is 32-bit, using it
for some weird Linux experiments + retro gaming, and if I can't run
new Linux kernels there - it would be SAD
ср, 12 дек. 2018 г. в 21:15, Joseph Myers [off-list ref]:

On Wed, 12 Dec 2018, Arnd Bergmann wrote:

quoted

quoted

MIPS had o32, n32, n64 since like forever.

o32 and n32 are practically the same, the only difference on the
syscall ABI that I can see are the actual syscall numbers, and
the 'struct sigcontext' definition.

And for syscalls that have 64-bit arguments, n32 generally passes those in
a single register (like n64), not pairs of registers (like o32).  But,
yes, userspace structure layout for n32 is generally much closer to o32
than to n64.

--
Joseph S. Myers
joseph@codesourcery.com