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Home » I can't allocate more than 4 MB with pci_alloc_consistent

I can't allocate more than 4 MB with pci_alloc_consistent

August 27, 2008 - 10:16am
Submitted by atou on August 27, 2008 - 10:16am.
Linux

I need to allocate 5Mb coherent memory but the function pci_alloc_consistent failed whenn size is 5MB.
I can allocate max. 4Mb.

Why I can´t allocate more than 5MB?
How can I overcome this limit?

I'm using kernel 2.6.24-16 for intel(R) core(TM)2

Thank.

‹ Kernel drops ethernet packets every ten minutes... Ideas? Interactive Linux kernel map ›

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