On Wednesday 19 September 2007 18:16:25 Jan Beulich wrote:
> >>> Andi Kleen <[email protected]> 19.09.07 18:09 >>>
> >On Wednesday 19 September 2007 16:39:39 Jan Beulich wrote:
> >> One more of these issues (which were considered fixed a few releases
> >> back): Other than on x86-64, i386 allows set_fixmap() to replace
> >> already present mappings. Consequently, on PAE, care must be taken to
> >> not update the high half of a pte while the low half is still holding
> >> the old value.
> >
> >Hmm perhaps it would be better to just forbid it on i386 too.
> >Do you know who uses it?
>
> PCI's mmconfig accessor. One could of course make it call clear_fixmap() prior
> to establishing a new mapping, but I thought that was not intended and is the
> reason for allowing this.
Makes sense. Applied thanks.
-Andi
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
