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Commit 5e48521e authored by Zhang, Yanmin's avatar Zhang, Yanmin Committed by Tony Luck
Browse files

[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: default avatarZhang Yanmin <yanmin.zhang@intel.com>
Acked-by: default avatarKen Chen <kenneth.w.chen@intel.com>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
parent 64bc0430

arch/ia64/mm/init.c

+7 −1
Original line number Diff line number Diff line
@@ -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... */
@@ -119,6 +120,11 @@ lazy_mmu_prot_update (pte_t pte) 
	if (test_bit(PG_arch_1, &page->flags))

		return;				/* i-cache is already coherent with d-cache */



	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 */

}