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From: Nishanth Aravamudan <nacc@us.ibm.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: sonnyrao@us.ibm.com, miltonm@bga.com,
	Paul Mackerras <paulus@samba.org>,
	Anton Blanchard <anton@samba.org>,
	linuxppc-dev@lists.ozlabs.org
Subject: Re: [RFC PATCH 7/7 v2] ppc: add dynamic dma window support
Date: Thu, 9 Dec 2010 11:00:17 -0800	[thread overview]
Message-ID: <20101209190017.GA25003@us.ibm.com> (raw)
In-Reply-To: <1291868226.16694.220.camel@pasglop>

On 09.12.2010 [15:17:06 +1100], Benjamin Herrenschmidt wrote:
> On Tue, 2010-10-26 at 20:35 -0700, Nishanth Aravamudan wrote:
> 
> No much comments... I'm amazed how complex he firmware folks managed to
> make this ... 
> 
> >  static int iommu_reconfig_notifier(struct notifier_block *nb, unsigned long action, void *node)
> >  {
> >  	int err = NOTIFY_OK;
> >  	struct device_node *np = node;
> >  	struct pci_dn *pci = PCI_DN(np);
> > +	struct direct_window *window;
> >  
> >  	switch (action) {
> >  	case PSERIES_RECONFIG_REMOVE:
> >  		if (pci && pci->iommu_table)
> >  			iommu_free_table(pci->iommu_table, np->full_name);
> > +
> > +		spin_lock(&direct_window_list_lock);
> > +		list_for_each_entry(window, &direct_window_list, list) {
> > +			if (window->device == np) {
> > +				list_del(&window->list);
> > +				break;
> > +			}
> > +		}
> > +		spin_unlock(&direct_window_list_lock);
> 
> Should you also kfree the window ?

Yeah, looks like I should. I have a few other questions due to testing,
but I'll reply to my original e-mail with those.

Thanks for the review!
Nish

-- 
Nishanth Aravamudan <nacc@us.ibm.com>
IBM Linux Technology Center

  reply	other threads:[~2010-12-09 19:00 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-10-27  3:35 [RFC PATCH 0/7 v2] ppc: enable dynamic dma window support Nishanth Aravamudan
2010-10-27  3:35 ` [RFC PATCH 1/7 v2] macio: ensure all dma routines get copied over Nishanth Aravamudan
2010-10-27  3:35 ` [RFC PATCH 2/7 v2] ppc: add memory_hotplug_max Nishanth Aravamudan
2010-10-27  3:35 ` [RFC PATCH 3/7 v2] ppc: do not search for dma-window property on dlpar remove Nishanth Aravamudan
2010-11-29  1:38   ` Benjamin Herrenschmidt
2010-12-01  0:30     ` Nishanth Aravamudan
2010-12-04  0:30     ` Nishanth Aravamudan
2010-10-27  3:35 ` [RFC PATCH 4/7 v2] ppc: checking for pdn->parent is redundant Nishanth Aravamudan
2010-10-27  3:35 ` [RFC PATCH 5/7 v2] ppc/iommu: do not need to check for dma_window == NULL Nishanth Aravamudan
2010-10-27  3:35 ` [RFC PATCH 6/7 v2] ppc/iommu: pass phb only to iommu_table_setparms_lpar Nishanth Aravamudan
2010-12-09  4:24   ` Benjamin Herrenschmidt
2010-12-09 16:16     ` Nishanth Aravamudan
2010-10-27  3:35 ` [RFC PATCH 7/7 v2] ppc: add dynamic dma window support Nishanth Aravamudan
2010-12-09  4:17   ` Benjamin Herrenschmidt
2010-12-09 19:00     ` Nishanth Aravamudan [this message]
2010-12-09 19:09   ` Nishanth Aravamudan
2010-12-11  0:07     ` [PATCH 7/7 v3] " Nishanth Aravamudan
2011-01-08  2:53       ` [PATCH] ppc: update dynamic dma support Nishanth Aravamudan
2011-01-17 17:32         ` [PATCH v2] " Nishanth Aravamudan
2011-01-18  0:20           ` [PATCH v3] " Nishanth Aravamudan
2010-11-08 19:42 ` [RFC PATCH 0/7 v2] ppc: enable dynamic dma window support Nishanth Aravamudan

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