linux-kernel - RE: [PATCHv3 00/11] staging tidspbridge: iommu migration

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Message-ID: <496565EC904933469F292DDA3F1663E602F47B2BB1@dlee06.ent.ti.com>
Date:	Mon, 11 Oct 2010 10:03:07 -0500
From:	"Guzman Lugo, Fernando" <fernando.lugo@...com>
To:	Felipe Contreras <felipe.contreras@...il.com>
CC:	"gregkh@...e.de" <gregkh@...e.de>,
	"felipe.contreras@...ia.com" <felipe.contreras@...ia.com>,
	"ameya.palande@...ia.com" <ameya.palande@...ia.com>,
	"Menon, Nishanth" <nm@...com>,
	"Hiroshi.DOYU@...ia.com" <Hiroshi.DOYU@...ia.com>,
	"ohad@...ery.com" <ohad@...ery.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"andy.shevchenko@...il.com" <andy.shevchenko@...il.com>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>
Subject: RE: [PATCHv3 00/11] staging tidspbridge: iommu migration

 

> -----Original Message-----
> From: Felipe Contreras [mailto:felipe.contreras@...il.com] 
> Sent: Sunday, October 10, 2010 12:33 PM
> To: Guzman Lugo, Fernando
> Cc: gregkh@...e.de; felipe.contreras@...ia.com; 
> ameya.palande@...ia.com; Menon, Nishanth; 
> Hiroshi.DOYU@...ia.com; ohad@...ery.com; 
> linux-kernel@...r.kernel.org; andy.shevchenko@...il.com; 
> linux-omap@...r.kernel.org
> Subject: Re: [PATCHv3 00/11] staging tidspbridge: iommu migration
> 
> On Tue, Oct 5, 2010 at 11:35 PM, Fernando Guzman Lugo 
> <x0095840@...com> wrote:
> > This set of patches remove the dspbridge custom mmu 
> implementation and 
> > use iommu module instead.
> 
> I have tried this, it works for simple tests, but not real use-cases.
> I applied all your iommu patches. How did you test this?

Have you applied:

- "scatterlist: define SG chain for arm architecture"
- "iovmm: replace __iounmap with omap_iounmap"
- "iovmm: add superpages support to fixed da address"
- "iovmm: IVA2 MMU range is from 0x11000000 to 0xFFFFFFFF"
- "iovmm: no gap checking for fixed address"

Also make sure your baseline have this patch:

- "omap:iommu-load cam register before flushing the entry"


What kind of error are you getting?

I don't have a complete framework to test MM testcases at this moment
I did not stress test but a bridge level, and they were good, just some
Mailbox issues beucase of the lack of some patches. So I was waiting
All missing patches are merge in order to do more stressing testing because
I think there is some race conditions in iommu module that need to be fixed.

You can email me the case and erros you are facing privately and I will
Check them, maybe it is because of missing patches.

Regards,
Fernando.

> 
> --
> Felipe Contreras
> --
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