Re: Linux powerpc new system call instruction and ABI

On Fri, May 21, 2021 at 05:00:36PM -0300, Matheus Castanho wrote:

Florian Weimer [off-list ref] writes:

quoted

* Matheus Castanho via Libc-alpha:

quoted

From: Nicholas Piggin <npiggin@gmail.com>
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 <redacted>

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.

Could you also mention in the commit message that the change fixes
'signal.gen.test' strace test where it was observed initially?


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ldv