From: Zhang, Yanmin Date: Thu, 23 Feb 2006 03:07:20 +0000 (+0800) Subject: [IA64] lazy_mmu_prot_update needs to be aware of huge pages X-Git-Tag: v2.6.17-rc1~148^2~8 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5e48521e869de7d904bb5ffe9739258ffa026927;p=linux-2.6 [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 --- diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c index ff4f31fcd3..674736129b 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 */ }