summaryrefslogtreecommitdiffstats
path: root/arch/sh/mm/init.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sh/mm/init.c')
-rw-r--r--arch/sh/mm/init.c15
1 files changed, 0 insertions, 15 deletions
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index fe578a286fd..32ebd1592e6 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -98,21 +98,6 @@ static void clear_pte_phys(unsigned long addr, pgprot_t prot)
local_flush_tlb_one(get_asid(), addr);
}
-/*
- * As a performance optimization, other platforms preserve the fixmap mapping
- * across a context switch, we don't presently do this, but this could be done
- * in a similar fashion as to the wired TLB interface that sh64 uses (by way
- * of the memory mapped UTLB configuration) -- this unfortunately forces us to
- * give up a TLB entry for each mapping we want to preserve. While this may be
- * viable for a small number of fixmaps, it's not particularly useful for
- * everything and needs to be carefully evaluated. (ie, we may want this for
- * the vsyscall page).
- *
- * XXX: Perhaps add a _PAGE_WIRED flag or something similar that we can pass
- * in at __set_fixmap() time to determine the appropriate behavior to follow.
- *
- * -- PFM.
- */
void __set_fixmap(enum fixed_addresses idx, unsigned long phys, pgprot_t prot)
{
unsigned long address = __fix_to_virt(idx);