state of the I/O memory when arrives at low level HBA driver

state of the I/O memory when arrives at low level HBA driver

[Parav Pandit]

Hi,

This may be petty question, but I am not really sure
about this.

When a I/O comes to the low level SCSI HBA driver
through enqueue() interface, 

can it happen that I/O data memory is paged out or can
be paged out?

I mean, doing DMA mapping such as pci_map_single()
provides, just physical addresses or it also (page-in
if requires) followed by locking the page(s) in the
system?

Regards,
Parav Pandit



       
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Re: state of the I/O memory when arrives at low level HBA driver

[Parav Pandit]

o.k. I got the answer.

It is already been locked when it comes to the low
level HBA driver.

Thanks,
Parav

--- Parav Pandit <paravpandit@yahoo.com> wrote:

> Hi,
> 
> This may be petty question, but I am not really sure
> about this.
> 
> When a I/O comes to the low level SCSI HBA driver
> through enqueue() interface, 
> 
> can it happen that I/O data memory is paged out or
> can
> be paged out?
> 
> I mean, doing DMA mapping such as pci_map_single()
> provides, just physical addresses or it also
> (page-in
> if requires) followed by locking the page(s) in the
> system?
> 
> Regards,
> Parav Pandit
> 
> 
> 
>        
>
____________________________________________________________________________________
> Boardwalk for $500? In 2007? Ha! Play Monopoly Here
> and Now (it's updated for today's economy) at Yahoo!
> Games.
>
http://get.games.yahoo.com/proddesc?gamekey=monopolyherenow
>  
> -
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