RE: [RFQ] New driver architecture questions

From: Mukker, Atul
Date: Fri May 15 2009 - 14:04:58 EST



> -----Original Message-----
> From: Matthew Wilcox [mailto:matthew@xxxxxx]
> Sent: Friday, May 15, 2009 12:36 PM
> To: Mukker, Atul
> Cc: Jeff Garzik; Julian Calaby; adam radford; linux-
> kernel@xxxxxxxxxxxxxxx; Austria, Winston; linux-scsi@xxxxxxxxxxxxxxx
> Subject: Re: [RFQ] New driver architecture questions
>
> On Fri, May 15, 2009 at 08:56:25AM -0600, Mukker, Atul wrote:
> > [Atul] I think we are close, for example, memcpy API in the stack is
> osi_memcpy(), which translates to memcpy() on Linux and
> ScsiPortMoveMemory() on windows.
>
> The solution to "We have some people who speak French and other people who
> speak German" is not to invent Esperanto ;-)
[Atul] We really wish they could communicate in English :-), since that's not an option, we agree in principle that using native Linux Kernel APIs wherever possible is probably a good idea.
>
> Using one or the other internally is fine (we don't care what you do),
> but we want to see memcpy(). By the way, the documentation I found for
> ScsiPortMoveMemory() seems to indicate that it's memmove(), not memcpy().
> Mapping memcpy() to ScsiPortMoveMemory() is fine ... but you can't
> realiably go the other way.
[Atul] It's actually memcpy(),http://msdn.microsoft.com/en-us/library/ms805434.aspx

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