Linux powerpc new system call instruction and ABI

Matheus Castanho msc at
Sat May 22 06:00:36 AEST 2021

Florian Weimer <fweimer at> writes:

> * Matheus Castanho via Libc-alpha:
>> From: Nicholas Piggin <npiggin at>
>> Subject: [PATCH 1/1] powerpc: Fix handling of scv return error codes
>> When using scv on templated ASM syscalls, current code interprets any
>> negative return value as error, but the only valid error codes are in
>> the range -4095..-1 according to the ABI.
>> Reviewed-by: Matheus Castanho <msc at>
> Please reference bug 27892 in the commit message.  I'd also appreciate a
> backport to the 2.33 release branch (where you need to add NEWS manually
> to add the bug reference).

No problem. [BZ #27892] appended to the commit title. I'll make sure to
backport to 2.33 as well.


Matheus Castanho

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