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Old 02-06-08, 12:44 AM   #1
tanmay.anjaria
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Default Physical memory request to Linux Kernel

Hello,

I am running a multithreaded program for which I'm in need of acquiring some physical memory from linux kernel.

malloc() gives virtually memory mapped memory and then MMU translates that into physical memory...

Can someone show me the way to allocate Physical memory directly on linux? (without routing through virtual)

Thanks,
Tanmay
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Old 02-06-08, 09:02 AM   #2
mlauss
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Default Re: Physical memory request to Linux Kernel

What are you trying to achieve? Why do you need memory to be at a certain
physical address?
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Old 03-15-08, 04:03 AM   #3
Valheru
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Default Re: Physical memory request to Linux Kernel

You can't. That would mean bypassing the TLB, which operates at a hardware level.
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