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 for <linuxppc-dev@lists.ozlabs.org> from <fbarrat@linux.vnet.ibm.com>;
 Mon, 8 Jan 2018 16:33:24 -0000
Subject: Re: [PATCH v5 1/2] powerpc/powernv: Enable tunneled operations
To: Philippe Bergheaud <felix@linux.vnet.ibm.com>,
 linuxppc-dev@lists.ozlabs.org
Cc: clombard@linux.vnet.ibm.com, benh@au1.ibm.com
References: <20171222123624.1880-1-felix@linux.vnet.ibm.com>
From: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Date: Mon, 8 Jan 2018 17:33:20 +0100
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Le 22/12/2017 à 13:36, Philippe Bergheaud a écrit :
> +#ifdef CONFIG_PPC64	/* for thread.tidr */
> +int pnv_pci_get_as_notify_info(struct task_struct *task, u32 *lpid, u32 *pid,
> +			       u32 *tid)
> +{
> +	struct mm_struct *mm = NULL;
> +
> +	if (task == NULL)
> +		return -EINVAL;
> +
> +	mm = get_task_mm(task);
> +	if (mm == NULL)
> +		return -EINVAL;
> +	/*
> +	 * Caller is keeping a reference on mm_users for as long
> +	 * as XSL uses the memory context
> +	 */


That comment needs to be tweaked for pci mode. There's no XSL in play.

  Fred

> +	*pid = mm->context.id;
> +	mmput(mm);