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Re: [PATCH v2 1/6] irqchip: mips-gic: Add context saving for MIPS_REMOTEPROC

From Thomas Gleixner <tglx@linutronix.de>
Newsgroups linux.kernel
Subject Re: [PATCH v2 1/6] irqchip: mips-gic: Add context saving for MIPS_REMOTEPROC
Date 2016-09-20 11:50 +0200
Message-ID <sjpQC-1av-31@gated-at.bofh.it> (permalink)
References <sjoUy-Bu-5@gated-at.bofh.it> <sjoUy-Bu-21@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Tue, 20 Sep 2016, Matt Redfearn wrote:
> +/*
> + * The MIPS remote processor driver allows non-Linux firmware to take control
> + * of and execute on one of the systems VPEs. If that VPE is brought back under
> + * Linux, it is necessary to ensure that all GIC interrupts are routed and
> + * masked as Linux expects them, as the firmware can have done anything it
> + * likes with the GIC configuration (hopefully just for that VPEs local
> + * interrupt sources, but allow for shared external interrupts as well).
> + */
> +static int gic_cpu_notify(struct notifier_block *nfb, unsigned long action,
> +			       void *hcpu)
> +{
> +	unsigned int cpu = mips_cm_vp_id((unsigned long)hcpu);
> +
> +	switch (action) {
> +	case CPU_UP_PREPARE:
> +	case CPU_DOWN_FAILED:
> +		gic_restore_shared();
> +		gic_restore_local(cpu);
> +	default:
> +		break;
> +	}
> +
> +	return NOTIFY_OK;
> +}

Please use the new state machine based infrastructure.

Thanks,

	tglx

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[PATCH v2 0/6] MIPS: Remote processor driver Matt Redfearn <matt.redfearn@imgtec.com> - 2016-09-20 10:50 +0200
  [PATCH v2 2/6] MIPS: tlb-r4k: If there are wired entries, don't use TLBINVF Matt Redfearn <matt.redfearn@imgtec.com> - 2016-09-20 10:50 +0200
    Re: [PATCH v2 2/6] MIPS: tlb-r4k: If there are wired entries, don't  use TLBINVF Ralf Baechle <ralf@linux-mips.org> - 2016-09-22 14:20 +0200
  [PATCH v2 1/6] irqchip: mips-gic: Add context saving for MIPS_REMOTEPROC Matt Redfearn <matt.redfearn@imgtec.com> - 2016-09-20 10:50 +0200
    Re: [PATCH v2 1/6] irqchip: mips-gic: Add context saving for  MIPS_REMOTEPROC Thomas Gleixner <tglx@linutronix.de> - 2016-09-20 11:50 +0200

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