Messages in this thread |  | | | From | Peter Chubb <> | | Date | Mon, 2 May 2005 10:17:51 +1000 | | Subject | Re: [PATCH] ppc64: update to use the new 4L headers |
| |
>>>>> "Nick" == Nick Piggin <nickpiggin@yahoo.com.au> writes:
Nick> Chris Friesen wrote: >> I needed something like: >> >> pte_t *va_to_ptep_map(struct mm_struct *mm, unsigned int addr) >> >> There was code in follow_page() that did basically what I needed, >> but it was all contained within that function so I had to >> re-implement it. >>
Nick> If you can break out exactly what you need, and make that inline Nick> or otherwise available via the correct header, I'm sure it would Nick> have a good chance of being merged.
We're currently working on this, so as to be able to provide interfaces to alternative page tables. We want to be able to slot in Liedtke's `Guarded Page Tables', or B-trees, or a hash table to see what happens.
Except we've called the function: pte_t * lookup_page_table(unsigned long address, struct mm_struct *mm);
follow_page() is essentially the same after inline expansion happens; but we're seeing a regression in clear_page_range() that we want to fix before release.
If you want to take a look (warning: it's still fairly rough work-in-progress) there's high level design being worked on at http://www.gelato.unsw.edu.au/IA64wiki/PageTableInterface and patches from our CVS repository. The only patch of interst is pti.patch.
cvs -d :pserver:anoncvs@gelato.unsw.edu.au:/gelato login Logging in to :pserver:anoncvs@lemon:2401/gelato CVS password:[enter anoncvs] $ cvs -d:pserver:anoncvs@gelato.unsw.edu.au:/gelato co kernel/page_table_interface
or from
http://www.gelato.unsw.edu.au/cgi-bin/viewcvs.cgi/cvs/kernel/page_table_interface/
Peter C - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
|  |