[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH v3 1/6] Modify DIRTY_FLAG value and DIRTY_IDX introd
From: |
Yoshiaki Tamura |
Subject: |
[Qemu-devel] [PATCH v3 1/6] Modify DIRTY_FLAG value and DIRTY_IDX introduce to use as indexes of bit-based phys_ram_dirty. |
Date: |
Mon, 19 Apr 2010 18:43:13 +0900 |
It uses ffs() to convert DIRTY_FLAG to DIRTY_IDX.
Signed-off-by: Yoshiaki Tamura <address@hidden>
---
cpu-all.h | 30 ++++++++++++++++++++++++++----
1 files changed, 26 insertions(+), 4 deletions(-)
diff --git a/cpu-all.h b/cpu-all.h
index f8bfa66..8c2d678 100644
--- a/cpu-all.h
+++ b/cpu-all.h
@@ -37,6 +37,9 @@
#include "softfloat.h"
+/* to use ffs in flag_to_idx() */
+#include <strings.h>
+
#if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
#define BSWAP_NEEDED
#endif
@@ -853,7 +856,6 @@ target_phys_addr_t cpu_get_phys_page_debug(CPUState *env,
target_ulong addr);
/* memory API */
extern int phys_ram_fd;
-extern uint8_t *phys_ram_dirty;
extern ram_addr_t ram_size;
extern ram_addr_t last_ram_offset;
@@ -878,9 +880,29 @@ extern int mem_prealloc;
/* Set if TLB entry is an IO callback. */
#define TLB_MMIO (1 << 5)
-#define VGA_DIRTY_FLAG 0x01
-#define CODE_DIRTY_FLAG 0x02
-#define MIGRATION_DIRTY_FLAG 0x08
+/* Use DIRTY_IDX as indexes of bit-based phys_ram_dirty. */
+#define MASTER_DIRTY_IDX 0
+#define VGA_DIRTY_IDX 1
+#define CODE_DIRTY_IDX 2
+#define MIGRATION_DIRTY_IDX 3
+#define NUM_DIRTY_IDX 4
+
+#define MASTER_DIRTY_FLAG (1 << MASTER_DIRTY_IDX)
+#define VGA_DIRTY_FLAG (1 << VGA_DIRTY_IDX)
+#define CODE_DIRTY_FLAG (1 << CODE_DIRTY_IDX)
+#define MIGRATION_DIRTY_FLAG (1 << MIGRATION_DIRTY_IDX)
+
+extern unsigned long *phys_ram_dirty[NUM_DIRTY_IDX];
+
+static inline int flag_to_idx(int flag)
+{
+ return ffs(flag) - 1;
+}
+
+static inline int idx_to_flag(int idx)
+{
+ return 1 << idx;
+}
/* read dirty bit (return 0 or 1) */
static inline int cpu_physical_memory_is_dirty(ram_addr_t addr)
--
1.7.0.31.g1df487
- [Qemu-devel] [PATCH v3 0/6] Introduce bit-based phys_ram_dirty, and bit-based dirty page checker., Yoshiaki Tamura, 2010/04/19
- [Qemu-devel] [PATCH v3 6/6] Use cpu_physical_memory_get_dirty_range() to check multiple dirty pages., Yoshiaki Tamura, 2010/04/19
- [Qemu-devel] [PATCH v3 3/6] Modifies wrapper functions for byte-based phys_ram_dirty bitmap to bit-based phys_ram_dirty bitmap., Yoshiaki Tamura, 2010/04/19
- [Qemu-devel] [PATCH v3 1/6] Modify DIRTY_FLAG value and DIRTY_IDX introduce to use as indexes of bit-based phys_ram_dirty.,
Yoshiaki Tamura <=
- [Qemu-devel] [PATCH v3 4/6] Introduce cpu_physical_memory_get_dirty_range()., Yoshiaki Tamura, 2010/04/19
- [Qemu-devel] [PATCH v3 5/6] Use cpu_physical_memory_set_dirty_range() to update phys_ram_dirty., Yoshiaki Tamura, 2010/04/19
- [Qemu-devel] [PATCH v3 2/6] Introduce bit-based phys_ram_dirty for VGA, CODE, MIGRATION and MASTER., Yoshiaki Tamura, 2010/04/19
- [Qemu-devel] Re: [PATCH v3 2/6] Introduce bit-based phys_ram_dirty for VGA, CODE, MIGRATION and MASTER., Avi Kivity, 2010/04/19
- [Qemu-devel] Re: [PATCH v3 2/6] Introduce bit-based phys_ram_dirty for VGA, CODE, MIGRATION and MASTER., Yoshiaki Tamura, 2010/04/19
- Re: [Qemu-devel] Re: [PATCH v3 2/6] Introduce bit-based phys_ram_dirty for VGA, CODE, MIGRATION and MASTER., Yoshiaki Tamura, 2010/04/19
- Re: [Qemu-devel] Re: [PATCH v3 2/6] Introduce bit-based phys_ram_dirty for VGA, CODE, MIGRATION and MASTER., Avi Kivity, 2010/04/19
- Re: [Qemu-devel] Re: [PATCH v3 2/6] Introduce bit-based phys_ram_dirty for VGA, CODE, MIGRATION and MASTER., Yoshiaki Tamura, 2010/04/19