From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from web36614.mail.mud.yahoo.com (web36614.mail.mud.yahoo.com [209.191.85.31]) by ozlabs.org (Postfix) with SMTP id 36E6867B89 for ; Tue, 18 Jul 2006 21:10:30 +1000 (EST) Message-ID: <20060718110350.28445.qmail@web36614.mail.mud.yahoo.com> Date: Tue, 18 Jul 2006 04:03:50 -0700 (PDT) From: Parav Pandit Subject: page locking in PowerPC cores To: linuxppc-embedded@ozlabs.org MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-980792983-1153220630=:26041" List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , --0-980792983-1153220630=:26041 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Hi, We allocate memory for DMA operation on PCI device using pci_alloc_constistent(). I want to know how this function is boil down to the actual instruction which locks the page in the RAM so that it cannot be paged out and dma can do its work. Can anybody tell me which instructions do we use to set this page entry in TLB and page table? What bit gets set in the PTE for this? Regards, Parav Pandit --------------------------------- Do you Yahoo!? Next-gen email? Have it all with the all-new Yahoo! Mail Beta. --0-980792983-1153220630=:26041 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: 8bit
Hi,
 
We allocate memory for DMA operation on PCI device using pci_alloc_constistent().
 
I want to know how this function is boil down to the actual instruction which locks the page in the RAM so that it cannot be paged out and dma can do its work.
 
Can anybody tell me which instructions do we use to set this page entry in TLB and page table?
What bit gets set in the PTE for this?
 
Regards,
Parav Pandit
 

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