* Markus <M4rkusXXL@xxxxxx> wrote: > > > > Still valid for 2.6.29-rc8-git5. > > > > > > And not really likely to change until someone with a pwc camera adds > lots > > > of printks to the code to work out why this happens. > > > > Or does a bisection to figure out the bad commit, because the report > > says that 2.6.28 worked. > > > > The 'howto bisect' portion of: > > > > http://www.kernel.org/doc/local/git-quick.html > > > Well I did a bisect: > be03d9e8022030c16abf534e33e185bfc3d40eef is first bad commit > commit be03d9e8022030c16abf534e33e185bfc3d40eef > Author: Suresh Siddha <suresh.b.siddha@xxxxxxxxx> > Date: Wed Feb 11 11:20:23 2009 -0800 > > x86, pat: fix warn_on_once() while mapping 0-1MB range with /dev/mem > > Jeff Mahoney reported: > > > With Suse's hwinfo tool, on -tip: > > WARNING: at arch/x86/mm/pat.c:637 reserve_pfn_range+0x5b/0x26d() > > reserve_pfn_range() is not tracking the memory range below 1MB > as non-RAM and as such is inconsistent with similar checks in > reserve_memtype() and free_memtype() > > Rename the pagerange_is_ram() to pat_pagerange_is_ram() and add the > "track legacy 1MB region as non RAM" condition. > > And also, fix reserve_pfn_range() to return -EINVAL, when the pfn > range is RAM. This is to be consistent with this API design. > > Reported-and-tested-by: Jeff Mahoney <jeffm@xxxxxxxx> > Signed-off-by: Suresh Siddha <suresh.b.siddha@xxxxxxxxx> > Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@xxxxxxxxx> > Signed-off-by: Ingo Molnar <mingo@xxxxxxx> > > :040000 040000 feb3bf21d762e885284cb1bedb5d2c6c0d16811b > b4c2143775386ce15dd49b6749c1f7913d8beb00 M arch > > So I ran "git bisect reset ; git revert > be03d9e8022030c16abf534e33e185bfc3d40eef" and rebuild. That worked! > > I dont know if this is valid to do, but its working fine. > Its an amd64 system with CONFIG_X86_PAT=y. > > Need some feedback ;) First thing to check would be whether the latest round of PAT fixes (not yet upstream) fix the problem: http://people.redhat.com/mingo/tip.git/README Suresh, any ideas? Ingo -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
