Dan Hecht wrote:
> Why doesn't Xen allocate the shared_info page from the pseudo-physical
> space? Doesn't it already have to steal pages from the
> pseudo-physical space for e.g. initial page tables, console, etc? Why
> not do the same for shared_info, and then you don't need a reserve the
> fixmap slot.
Unlike the pagetable pages or the console page, the shared info page
doesn't have a pseudo-physical address, so in order to map it we need to
directly construct a pte containing the mfn for that page. Inserting
this mapping into the fixmap space seems like the easiest way to do
this. It's not like a fixmap slot costs anything.
J
-
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]
