Benjamin Herrenschmidt wrote:
Hi !
This patch converts ppc64 to use the generic pgtable-nopud.h instead of
the "fixup" header.
Great! Nice work Ben.
-
-static void unmap_im_area_pmd(pgd_t *dir, unsigned long address,
- unsigned long size)
-{
- unsigned long base, end;
- pmd_t *pmd;
-
- if (pgd_none(*dir))
- return;
- if (pgd_bad(*dir)) {
- pgd_ERROR(*dir);
- pgd_clear(dir);
- return;
- }
-
- pmd = pmd_offset(dir, address);
- base = address & PGDIR_MASK;
- address &= ~PGDIR_MASK;
- end = address + size;
- if (end > PGDIR_SIZE)
- end = PGDIR_SIZE;
-
- do {
- unmap_im_area_pte(pmd, base + address, end - address);
- address = (address + PMD_SIZE) & PMD_MASK;
- pmd++;
- } while (address < end);
-}
Just a bit off-topic: I wonder how many more of these open
coded pt walks exist in arch code (yes I see you've cleaned
yours up - good).
I guess they don't matter much? They will probably get
converted when arches convert to the 4L headers.
--
SUSE Labs, Novell Inc.
-
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