Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

sh: Fix multiple UTLB hit on UP SH-4.

Browse source 
This acts as a reversion of 1c6b2ca5e0 in
the case of UP SH-4, where we still have the risk of a multiple hit
between the slow and fast paths. As seen on SH7780.

Signed-off-by: Hideo Saito <saito@densan.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Hideo Saito 2008-02-14 14:45:08 +09:00 committed by Paul Mundt
parent 123100cf4f
commit a602cc05f8
1 changed files with 8 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
arch/sh/mm/fault_32.c
View file

@ -299,6 +299,14 @@ asmlinkage int __kprobes __do_page_fault(struct pt_regs *regs,
entry = pte_mkdirty(entry);
entry = pte_mkyoung(entry);
#if defined(CONFIG_CPU_SH4) && !defined(CONFIG_SMP)
/*
* ITLB is not affected by "ldtlb" instruction.
* So, we need to flush the entry by ourselves.
*/
local_flush_tlb_one(get_asid(), address & PAGE_MASK);
#endif
set_pte(pte, entry);
update_mmu_cache(NULL, address, entry);