linux-kernel - Re: alpha: half done futex implementation

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <F29CA01F-869A-4C5C-9A3C-4F6B6ABEE901@kernel.crashing.org>
Date:	Tue, 14 Apr 2009 11:45:04 +0200
From:	Segher Boessenkool <segher@...nel.crashing.org>
To:	Segher Boessenkool <segher@...nel.crashing.org>
Cc:	Richard Henderson <rth@...ddle.net>,
	Oliver Falk <oliver@...ux-kernel.at>,
	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org,
	Ivan Kokshaysky <ink@...assic.park.msu.ru>,
	linux-alpha@...r.kernel.org, Matt Turner <mattst88@...il.com>,
	Jay Estabrook <jay.estabrook@...com>
Subject: Re: alpha: half done futex implementation

> If either the lwarx or the stwcx. faults, the routine returns -EFAULT
> and doesn't retry (label "3" is the end of the asm).
>
> If the stwcx. fails because the CPU lost the reservation, %1 isn't
> clobbered as far as I see?

Oh, "insn" writes to %1, never mind.


Segher

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/