linux-kernel - Re: [PATCH] irqchip: bcm2836: Use a CPU notifier enable IPIs.

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]

Date:	Sun, 2 Aug 2015 12:22:24 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Eric Anholt <eric@...olt.net>
cc:	linux-arm-kernel@...ts.infradead.org,
	linux-rpi-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Stephen Warren <swarren@...dotorg.org>,
	Lee Jones <lee@...nel.org>, devicetree@...r.kernel.org,
	Jason Cooper <jason@...edaemon.net>
Subject: Re: [PATCH] irqchip: bcm2836: Use a CPU notifier enable IPIs.

On Mon, 27 Jul 2015, Eric Anholt wrote:
> +/* Unmasks the IPI on the CPU wen it's first brought online. */

when

> +static int bcm2836_arm_irqchip_cpu_notify(struct notifier_block *nfb,
> +					  unsigned long action, void *hcpu)
> +{
> +	unsigned int cpu = (unsigned long)hcpu;
> +	unsigned int int_reg = LOCAL_MAILBOX_INT_CONTROL0;
> +	unsigned int mailbox = 0;
> +
> +	if (action == CPU_STARTING || action == CPU_STARTING_FROZEN)
> +		bcm2836_arm_irqchip_unmask_per_cpu_irq(int_reg, mailbox, cpu);

Shouldn't you mask the irq on CPU_DYING?

Thanks,

	tglx
--
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/