linux-kernel - Re: [PATCH 01/22] powerpc: convert idle_loop to use hard_irq

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: <200611211114.46305.arnd@arndb.de>
Date:	Tue, 21 Nov 2006 11:14:45 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:	cbe-oss-dev@...abs.org, linuxppc-dev@...abs.org,
	Paul Mackerras <paulus@...ba.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 01/22] powerpc: convert idle_loop to use hard_irq_disable()

On Tuesday 21 November 2006 01:53, Benjamin Herrenschmidt wrote:
> +
> +       /*
> +        * We need to hard disable interrupts, but we also need to mark them
> +        * hard disabled in the PACA so that the local_irq_enable() done by
> +        * our caller upon return propertly hard enables.
> +        */
> +       hard_irq_disable();
> +       get_paca()->hard_enabled = 0;
> +

Yes, this looks good. Paul, please use this patch instead of mine.
Do we need to do the same thing for any of the other power_save functions?
IIRC, all new CPUs are supposed to use the same mechanism based on the
0x100 vector.

	Arnd <><
-
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/