Am 21.10.2012 14:20, schrieb Per Foreby: > Note that this is 1023 memory banks, not 1024, so it's not exactly 64 MB > (65536 kB). Maybe the reason why it almost works with 256 MB is that the > kernel always thinks that we have exactly 256 MB but the Mobo supplies > one memory bank less. Just a theory..
Per, me came another idea. Some postings up Ben Hutching stated: "The driver calls ioremap_wc() which will enable write-combining through the PAT in recent processors." Isn't this "address translation" how I/O remapping (IOMMU) also called VT-d works? Per's CPU i7-3770 should support VT-d (in case the motherboard offeres it), while mine i5-3570K does not support VT-d (like all K-CPU's). Worth to try to switch off VT-d in the BIOS, Per? Ingo P.S.: I am still assuming that Per's and mine obeservations have the same root cause: some mismatch of I/O-memory areas caused by whatever, BIOS-bug, Kernel-bug or even hardware. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
