From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50833) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1W2lW8-0002tn-Fm for qemu-devel@nongnu.org; Mon, 13 Jan 2014 12:41:46 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1W2lW1-000743-7b for qemu-devel@nongnu.org; Mon, 13 Jan 2014 12:41:40 -0500 Received: from mx1.redhat.com ([209.132.183.28]:30826) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1W2lW0-00073r-UL for qemu-devel@nongnu.org; Mon, 13 Jan 2014 12:41:33 -0500 From: Juan Quintela Date: Mon, 13 Jan 2014 18:40:22 +0100 Message-Id: <1389634834-24181-38-git-send-email-quintela@redhat.com> In-Reply-To: <1389634834-24181-1-git-send-email-quintela@redhat.com> References: <1389634834-24181-1-git-send-email-quintela@redhat.com> Subject: [Qemu-devel] [PATCH 37/49] memory: cpu_physical_memory_set_dirty_range() now uses bitmap operations List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: anthony@codemonkey.ws We were setting a range of bits, so use bitmap_set(). Note: xen has always been wrong, and should have used start instead of addr from the beginning. Signed-off-by: Juan Quintela Reviewed-by: Eric Blake Reviewed-by: Orit Wasserman --- include/exec/memory-internal.h | 19 +++++++------------ 1 file changed, 7 insertions(+), 12 deletions(-) diff --git a/include/exec/memory-internal.h b/include/exec/memory-internal.h index b017c2e..4906cdf 100644 --- a/include/exec/memory-internal.h +++ b/include/exec/memory-internal.h @@ -81,19 +81,14 @@ static inline void cpu_physical_memory_set_dirty_flag(ram_addr_t addr, static inline void cpu_physical_memory_set_dirty_range(ram_addr_t start, ram_addr_t length) { - ram_addr_t addr, end; + unsigned long end, page; - end = TARGET_PAGE_ALIGN(start + length); - start &= TARGET_PAGE_MASK; - for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) { - set_bit(addr >> TARGET_PAGE_BITS, - ram_list.dirty_memory[DIRTY_MEMORY_MIGRATION]); - set_bit(addr >> TARGET_PAGE_BITS, - ram_list.dirty_memory[DIRTY_MEMORY_VGA]); - set_bit(addr >> TARGET_PAGE_BITS, - ram_list.dirty_memory[DIRTY_MEMORY_CODE]); - } - xen_modified_memory(addr, length); + end = TARGET_PAGE_ALIGN(start + length) >> TARGET_PAGE_BITS; + page = start >> TARGET_PAGE_BITS; + bitmap_set(ram_list.dirty_memory[DIRTY_MEMORY_MIGRATION], page, end - page); + bitmap_set(ram_list.dirty_memory[DIRTY_MEMORY_VGA], page, end - page); + bitmap_set(ram_list.dirty_memory[DIRTY_MEMORY_CODE], page, end - page); + xen_modified_memory(start, length); } static inline void cpu_physical_memory_clear_dirty_range(ram_addr_t start, -- 1.8.4.2