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Re: kmap_atomic_pfn for PCI BAR access?

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From: Jeremy Fitzhardinge <jeremy@...>

To: Keith Packard <keithp@...>

Cc: Arjan van de Ven <arjan@...>, Dave Airlie <airlied@...>, Dave Airlie <airlied@...>, linux-kernel <linux-kernel@...>

Subject: Re: kmap_atomic_pfn for PCI BAR access?

Date: Thursday, June 26, 2008 - 1:59 am

Keith Packard wrote:
quoted text> On Wed, 2008-06-25 at 21:36 -0700, Arjan van de Ven wrote:
>
>   
>> well kmap does a tlb flush as well... 
>>     
>
> kmap_atomic
>   

Anything that does any kind of pagetable manipulation needs to do tlb 
flushes.  kunmap_atomic handles the flushing.

    J
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Messages in current thread:

kmap_atomic_pfn for PCI BAR access?, Keith Packard, (Mon Jun 23, 1:34 pm)

Re: kmap_atomic_pfn for PCI BAR access?, Jeremy Fitzhardinge, (Wed Jun 25, 9:18 pm)

Re: kmap_atomic_pfn for PCI BAR access?, Dave Airlie, (Wed Jun 25, 9:23 pm)

Re: kmap_atomic_pfn for PCI BAR access?, Arjan van de Ven, (Thu Jun 26, 12:36 am)

Re: kmap_atomic_pfn for PCI BAR access?, Keith Packard, (Thu Jun 26, 1:36 am)

Re: kmap_atomic_pfn for PCI BAR access?, Arjan van de Ven, (Thu Jun 26, 6:34 am)

Re: kmap_atomic_pfn for PCI BAR access?, Jeremy Fitzhardinge, (Thu Jun 26, 1:59 am)

Re: kmap_atomic_pfn for PCI BAR access?, Dave Airlie, (Thu Jun 26, 2:02 am)

Re: kmap_atomic_pfn for PCI BAR access?, Arjan van de Ven, (Thu Jun 26, 6:36 am)

Re: kmap_atomic_pfn for PCI BAR access?, Arjan van de Ven, (Thu Jun 26, 9:02 am)

Re: kmap_atomic_pfn for PCI BAR access?, Dave Airlie, (Thu Jun 26, 1:02 am)

Re: kmap_atomic_pfn for PCI BAR access?, Keith Packard, (Thu Jun 26, 1:33 am)

Re: kmap_atomic_pfn for PCI BAR access?, Jeremy Fitzhardinge, (Wed Jun 25, 11:11 pm)

Re: kmap_atomic_pfn for PCI BAR access?, Nick Piggin, (Mon Jul 7, 2:53 am)

Re: kmap_atomic_pfn for PCI BAR access?, Arjan van de Ven, (Mon Jul 7, 3:05 am)

Re: kmap_atomic_pfn for PCI BAR access?, Nick Piggin, (Mon Jul 7, 7:19 am)

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