From mboxrd@z Thu Jan 1 00:00:00 1970 From: coolsandyforyou@gmail.com (sandeep kumar) Date: Wed, 1 Jun 2011 10:40:55 +0530 Subject: How DMA transfers > 2MB are being performed? Message-ID: To: kernelnewbies@lists.kernelnewbies.org List-Id: kernelnewbies.lists.kernelnewbies.org Hi all A very limited (1-2MB) address space is mapped to dma_alloc() in ARM architecture..what if a DMA transfer of >2MB is needed at a time? As DMA transfer starts asynchronously..CPU relinquishes data buses..so CPU cant control. So the excess data which is >2MB will be overflown or lost..So how this large data transfers are being managed? -- With regards, Sandeep Kumar Anantapalli, -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20110601/9ef6420c/attachment.html