From 5a6a4d4320aed1918bf79dfb6bd841317f33b8e9 Mon Sep 17 00:00:00 2001 From: Roland Dreier Date: Sat, 3 Sep 2005 15:55:43 -0700 Subject: [PATCH] [PATCH] ppc32: Don't sleep in flush_dcache_icache_page() flush_dcache_icache_page() will be called on an instruction page fault. We can't sleep in the fault handler, so use kmap_atomic() instead of just kmap() for the Book-E case. Signed-off-by: Roland Dreier Acked-by: Matt Porter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/ppc/mm/init.c | 5 +++-- include/asm-ppc/kmap_types.h | 1 + 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/ppc/mm/init.c b/arch/ppc/mm/init.c index 33ada72..32ee497 100644 --- a/arch/ppc/mm/init.c +++ b/arch/ppc/mm/init.c @@ -560,8 +560,9 @@ void flush_dcache_page(struct page *page) void flush_dcache_icache_page(struct page *page) { #ifdef CONFIG_BOOKE - __flush_dcache_icache(kmap(page)); - kunmap(page); + void *start = kmap_atomic(page, KM_PPC_SYNC_ICACHE); + __flush_dcache_icache(start); + kunmap_atomic(start, KM_PPC_SYNC_ICACHE); #elif CONFIG_8xx /* On 8xx there is no need to kmap since highmem is not supported */ __flush_dcache_icache(page_address(page)); diff --git a/include/asm-ppc/kmap_types.h b/include/asm-ppc/kmap_types.h index 2589f182..6d6fc78 100644 --- a/include/asm-ppc/kmap_types.h +++ b/include/asm-ppc/kmap_types.h @@ -17,6 +17,7 @@ enum km_type { KM_SOFTIRQ0, KM_SOFTIRQ1, KM_PPC_SYNC_PAGE, + KM_PPC_SYNC_ICACHE, KM_TYPE_NR }; -- 2.7.4