From f7ce644b409f1b28648ac457dd9545f93bff37f7 Mon Sep 17 00:00:00 2001 From: Zhang Yanmin Date: Fri, 19 Oct 2007 01:52:21 +0200 Subject: [IA64] lazy_mmu_prot_update needs to be aware of huge pages Function lazy_mmu_prot_update is also used on huge pages when it is called by set_huge_ptep_writable, but it isn't aware of huge pages. Signed-off-by: Zhang Yanmin Acked-by: Ken Chen Signed-off-by: Tony Luck Signed-off-by: Adrian Bunk --- arch/ia64/mm/init.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c index b38b6d213c15..4eb6e7e61fbd 100644 --- a/arch/ia64/mm/init.c +++ b/arch/ia64/mm/init.c @@ -109,6 +109,7 @@ lazy_mmu_prot_update (pte_t pte) { unsigned long addr; struct page *page; + unsigned long order; if (!pte_exec(pte)) return; /* not an executable page... */ @@ -119,7 +120,12 @@ lazy_mmu_prot_update (pte_t pte) if (test_bit(PG_arch_1, &page->flags)) return; /* i-cache is already coherent with d-cache */ - flush_icache_range(addr, addr + PAGE_SIZE); + if (PageCompound(page)) { + order = (unsigned long) (page[1].lru.prev); + flush_icache_range(addr, addr + (1UL << order << PAGE_SHIFT)); + } + else + flush_icache_range(addr, addr + PAGE_SIZE); set_bit(PG_arch_1, &page->flags); /* mark page as clean */ } -- cgit v1.2.3