Data space creation and physical memory allocation strategy.

Chen Tian - SISA chen.tian at ...58...
Fri Jun 10 22:35:19 CEST 2011


Thanks, Julian. Good to know.

Best,
Chen

-----Original Message-----
From: Julian Stecklina [mailto:js at ...14...] 
Sent: Friday, June 10, 2011 8:23 AM
To: genode-main at lists.sourceforge.net
Subject: Re: Data space creation and physical memory allocation
strategy.

On 06/10/2011 03:48 PM, Norman Feske wrote:
>> Does anybody know whether Linux has a similar mechanism (i.e. reserve

>> a chunk of physical memory for a virtual memory region before the 
>> first access to this region)? If not, what are the pros and cons of 
>> these two strategies?
> 
> I am not aware of a Linux mechanism for reserving physical memory. But

> as Linux is used for real-time applications, I expect that there 
> exists a mechanism.

I think mmap()+mlock() do exactly that.

Regards, Julian





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