From 4130035f29158309e86b3a1e0f25dbd5bec81af0 Mon Sep 17 00:00:00 2001 From: Juan Quintela Date: Tue, 14 Jan 2014 15:07:38 +0100 Subject: [PATCH 27/40] memory: cpu_physical_memory_clear_dirty_range() now uses bitmap operations RH-Author: Juan Quintela Message-id: <1389712071-23303-28-git-send-email-quintela@redhat.com> Patchwork-id: 56685 O-Subject: [RHEL7 qemu-kvm PATCH 27/40] memory: cpu_physical_memory_clear_dirty_range() now uses bitmap operations Bugzilla: 997559 RH-Acked-by: Paolo Bonzini RH-Acked-by: Orit Wasserman RH-Acked-by: Dr. David Alan Gilbert (git) We were clearing a range of bits, so use bitmap_clear(). Signed-off-by: Juan Quintela Reviewed-by: Eric Blake Reviewed-by: Orit Wasserman (cherry picked from commit a461e389f489e72cdc770ff887512c2c9109bc43) Signed-off-by: Juan Quintela --- include/exec/memory-internal.h | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) Signed-off-by: Miroslav Rezanina --- include/exec/memory-internal.h | 10 ++++------ 1 files changed, 4 insertions(+), 6 deletions(-) diff --git a/include/exec/memory-internal.h b/include/exec/memory-internal.h index 9d32a5a..94bd6af 100644 --- a/include/exec/memory-internal.h +++ b/include/exec/memory-internal.h @@ -104,14 +104,12 @@ static inline void cpu_physical_memory_clear_dirty_range(ram_addr_t start, ram_addr_t length, unsigned client) { - ram_addr_t addr, end; + unsigned long end, page; assert(client < DIRTY_MEMORY_NUM); - end = TARGET_PAGE_ALIGN(start + length); - start &= TARGET_PAGE_MASK; - for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) { - clear_bit(addr >> TARGET_PAGE_BITS, ram_list.dirty_memory[client]); - } + end = TARGET_PAGE_ALIGN(start + length) >> TARGET_PAGE_BITS; + page = start >> TARGET_PAGE_BITS; + bitmap_clear(ram_list.dirty_memory[client], page, end - page); } void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end, -- 1.7.1