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    DateFri, 25 Apr 2008 16:43:59 -0700 (PDT)
    FromLinus Torvalds <>
    SubjectRe: [git pull] x86 PAT changes
    
    On Fri, 25 Apr 2008, Ingo Molnar wrote:
    > Linus, please pull the x86-pat git tree from:
    > 
    >    git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-pat.git for-linus
    > 
    > this adds the second (and final) phase of the x86 PAT changes. Due to 
    > generic impact (the drivers/char/mem.c and include/asm-generic/iomap.h 
    > changes) this is offered as a separate tree.
    
    So why is PAT dependent on NONPROMISC_DEVMEM here?
    
    It seems pointless and wrong. Somebody might want to have both the full 
    /dev/mem and PAT.
    
    Also, it causes this message for me on one of my machines:
    
    	EXT3-fs: mounted filesystem with ordered data mode.
    	Overlap at 0xe0300000-0xe0400000
    	Overlap at 0xe0300000-0xe0400000
    	Overlap at 0xe0300000-0xe0400000
    	Overlap at 0xe0300000-0xe0400000
    	Overlap at 0xe0300000-0xe0400000
    	Overlap at 0xe0300000-0xe0400000
    	mtrr: no more MTRRs available
    	Overlap at 0xd0000000-0xe0000000
    	Overlap at 0xe0300000-0xe0400000
    	Overlap at 0xe0300000-0xe0380000
    	EXT3 FS on dm-0, internal journal
    	...
    	eth0: no IPv6 routers present
    	Overlap at 0xd0000000-0xe0000000
    	Overlap at 0xe0300000-0xe0400000
    	Overlap at 0xe0300000-0xe0380000
    	Overlap at 0xd0000000-0xe0000000
    	Overlap at 0xe0300000-0xe0400000
    	Overlap at 0xe0300000-0xe0380000
    	Overlap at 0xd0000000-0xe0000000
    	Overlap at 0xe0300000-0xe0400000
    	Overlap at 0xe0300000-0xe0380000
    	Overlap at 0xd0000000-0xe0000000
    	Overlap at 0xe0300000-0xe0400000
    	Overlap at 0xe0300000-0xe0380000
    	Overlap at 0xd0000000-0xe0000000
    	Overlap at 0xe0300000-0xe0400000
    	Overlap at 0xe0300000-0xe0380000
    	Overlap at 0xe0300000-0xe0400000
    	Overlap at 0xe0300000-0xe0400000
    	Overlap at 0xe0300000-0xe0400000
    	Overlap at 0xe0300000-0xe0400000
    	Overlap at 0xe0300000-0xe0400000
    	Overlap at 0xe0300000-0xe0400000
    	Overlap at 0xd0000000-0xd0020000
    	mtrr: no more MTRRs available
    	Overlap at 0xd0000000-0xe0000000
    	Overlap at 0xe0300000-0xe0400000
    	Overlap at 0xe0300000-0xe0380000
    which is a bit annoying. Forgotten debug printk, perhaps?
    
    			Linus
    
    
    
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