Perhaps Michael meant: cat /proc/mtrr reg00: base=0x000000000 ( 0MB), size= 2048MB, count=1: write-back reg01: base=0x080000000 ( 2048MB), size= 512MB, count=1: write-back reg02: base=0x0a0000000 ( 2560MB), size= 256MB, count=1: write-back reg03: base=0x0b0000000 ( 2816MB), size= 128MB, count=1: write-back reg04: base=0x0b8000000 ( 2944MB), size= 64MB, count=1: write-back reg05: base=0x0fbc00000 ( 4028MB), size= 2MB, count=1: write-combining reg06: base=0x0fb800000 ( 4024MB), size= 4MB, count=1: write-combining reg07: base=0x0fb000000 ( 4016MB), size= 8MB, count=1: write-combining Please give some hint on how to read these info? Thanks!!! On Fri, Nov 14, 2008 at 3:41 AM, Neal Becker <ndbecker2@xxxxxxxxx> wrote: > Michael Blizek wrote: > >> Hi! >> >> On 07:47 Thu 13 Nov , Neal Becker wrote: >>> I just read the article on LWN about write-combining >>> http://lwn.net/Articles/282250/ >>> >>> I am working on an in-house PCI board. How do I tell if write-combining >>> is turned on? >>> >>> I am using remap_pfn_range to expose the board's address space to user >>> space via mmap. >> >> Type mtrrinfo in a shell. >> -Michi > > Thanks, but no mtrrinfo here (fedora F9). locate mtrrinfo shows nothing. google doesn't seem to show anything either. > > > -- > To unsubscribe from this list: send an email with > "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx > Please read the FAQ at http://kernelnewbies.org/FAQ > > -- Regards, Peter Teoh -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
