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authorRalf Baechle <ralf@linux-mips.org>2012-01-11 15:41:47 +0100
committerRalf Baechle <ralf@linux-mips.org>2012-01-11 15:41:47 +0100
commit39b741431af7f6f46b2e0e7f7f13ea2351fb4a5f (patch)
tree89355f4ae7bbb874537bb65f71ba0d19b3d468e1 /arch/mips/mm/tlb-r4k.c
parent5b0ec2efb7d373faa7b1a7632c459b93895d45cd (diff)
parentd7a887a73dec6c387b02a966a71aac767bbd9ce6 (diff)
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Merge branch 'next/generic' into mips-for-linux-next
Diffstat (limited to 'arch/mips/mm/tlb-r4k.c')
-rw-r--r--arch/mips/mm/tlb-r4k.c67
1 files changed, 14 insertions, 53 deletions
diff --git a/arch/mips/mm/tlb-r4k.c b/arch/mips/mm/tlb-r4k.c
index d163455552b0..2dc625346c40 100644
--- a/arch/mips/mm/tlb-r4k.c
+++ b/arch/mips/mm/tlb-r4k.c
@@ -121,22 +121,30 @@ void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
if (cpu_context(cpu, mm) != 0) {
unsigned long size, flags;
+ int huge = is_vm_hugetlb_page(vma);
ENTER_CRITICAL(flags);
- size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
- size = (size + 1) >> 1;
+ if (huge) {
+ start = round_down(start, HPAGE_SIZE);
+ end = round_up(end, HPAGE_SIZE);
+ size = (end - start) >> HPAGE_SHIFT;
+ } else {
+ start = round_down(start, PAGE_SIZE << 1);
+ end = round_up(end, PAGE_SIZE << 1);
+ size = (end - start) >> (PAGE_SHIFT + 1);
+ }
if (size <= current_cpu_data.tlbsize/2) {
int oldpid = read_c0_entryhi();
int newpid = cpu_asid(cpu, mm);
- start &= (PAGE_MASK << 1);
- end += ((PAGE_SIZE << 1) - 1);
- end &= (PAGE_MASK << 1);
while (start < end) {
int idx;
write_c0_entryhi(start | newpid);
- start += (PAGE_SIZE << 1);
+ if (huge)
+ start += HPAGE_SIZE;
+ else
+ start += (PAGE_SIZE << 1);
mtc0_tlbw_hazard();
tlb_probe();
tlb_probe_hazard();
@@ -369,51 +377,6 @@ void add_wired_entry(unsigned long entrylo0, unsigned long entrylo1,
EXIT_CRITICAL(flags);
}
-/*
- * Used for loading TLB entries before trap_init() has started, when we
- * don't actually want to add a wired entry which remains throughout the
- * lifetime of the system
- */
-
-static int temp_tlb_entry __cpuinitdata;
-
-__init int add_temporary_entry(unsigned long entrylo0, unsigned long entrylo1,
- unsigned long entryhi, unsigned long pagemask)
-{
- int ret = 0;
- unsigned long flags;
- unsigned long wired;
- unsigned long old_pagemask;
- unsigned long old_ctx;
-
- ENTER_CRITICAL(flags);
- /* Save old context and create impossible VPN2 value */
- old_ctx = read_c0_entryhi();
- old_pagemask = read_c0_pagemask();
- wired = read_c0_wired();
- if (--temp_tlb_entry < wired) {
- printk(KERN_WARNING
- "No TLB space left for add_temporary_entry\n");
- ret = -ENOSPC;
- goto out;
- }
-
- write_c0_index(temp_tlb_entry);
- write_c0_pagemask(pagemask);
- write_c0_entryhi(entryhi);
- write_c0_entrylo0(entrylo0);
- write_c0_entrylo1(entrylo1);
- mtc0_tlbw_hazard();
- tlb_write_indexed();
- tlbw_use_hazard();
-
- write_c0_entryhi(old_ctx);
- write_c0_pagemask(old_pagemask);
-out:
- EXIT_CRITICAL(flags);
- return ret;
-}
-
static int __cpuinitdata ntlb;
static int __init set_ntlb(char *str)
{
@@ -451,8 +414,6 @@ void __cpuinit tlb_init(void)
write_c0_pagegrain(pg);
}
- temp_tlb_entry = current_cpu_data.tlbsize - 1;
-
/* From this point on the ARC firmware is dead. */
local_flush_tlb_all();