Using PAT features from user space

Alessandro Pignotti <[email protected]> Sat, 12 Sep 2009 18:20:52 -0700

Newsgroups	org.kernel.vger.linux-c-programming
Message-ID	<[email protected]>

Hi everyone,

I'm writing an high performance application on x86-64 that allocate
some memory to store a write only journal. I was wondering if there is
a way to ask the kernel to mark such pages as write combining memory.
More in general, it's possible to use PAT from userspace? I was
expecting some mmap flag like MAP_NOCACHE, but there not seems to be
any such flags.

Regards,
Alessandro