On Mon, Sep 28, 2009 at 2:32 PM, Jason Nymble <jason.nymble@xxxxxxxxx> wrote: > 2.6.25 Changelog : > commit 9af993a92623e022c176459fa6607a564b9a7eaf > Author: Ingo Molnar <mingo@xxxxxxx> > Date: Wed Jan 30 13:34:09 2008 +0100 > > x86: make ioremap() UC by default > > Yes! A mere 120 c_p_a() fixing and rewriting patches later, > we are now confident that we can enable UC by default for > ioremap(), on x86 too. > > Every other architectures was doing this already. Doing so > makes Linux more robust against MTRR mixups (which might go > unnoticed if BIOS writers test other OSs only - where PAT > might override bad MTRRs defaults). > > Signed-off-by: Ingo Molnar <mingo@xxxxxxx> > Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Could somebody shed a light on what "more robust against MTRR mixups" here means? -- regards, Mulyadi Santosa Freelance Linux trainer blog: the-hydra.blogspot.com -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
