From: "Philippe Mathieu-Daudé" <philmd@linaro.org>
To: qemu-devel@nongnu.org
Subject: [PULL 32/41] system/physmem: Un-inline cpu_physical_memory_range_includes_clean()
Date: Sat, 4 Oct 2025 09:12:58 +0200 [thread overview]
Message-ID: <20251004071307.37521-33-philmd@linaro.org> (raw)
In-Reply-To: <20251004071307.37521-1-philmd@linaro.org>
Avoid maintaining large functions in header, rely on the
linker to optimize at linking time.
cpu_physical_memory_all_dirty() doesn't involve any CPU,
remove the 'cpu_' prefix.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20251001175448.18933-10-philmd@linaro.org>
---
include/system/ram_addr.h | 62 ++-------------------------------------
system/physmem.c | 60 +++++++++++++++++++++++++++++++++++++
2 files changed, 63 insertions(+), 59 deletions(-)
diff --git a/include/system/ram_addr.h b/include/system/ram_addr.h
index cdf25c315be..2dcca260b2b 100644
--- a/include/system/ram_addr.h
+++ b/include/system/ram_addr.h
@@ -142,69 +142,13 @@ static inline void qemu_ram_block_writeback(RAMBlock *block)
#define DIRTY_CLIENTS_ALL ((1 << DIRTY_MEMORY_NUM) - 1)
#define DIRTY_CLIENTS_NOCODE (DIRTY_CLIENTS_ALL & ~(1 << DIRTY_MEMORY_CODE))
-static inline bool cpu_physical_memory_all_dirty(ram_addr_t start,
- ram_addr_t length,
- unsigned client)
-{
- DirtyMemoryBlocks *blocks;
- unsigned long end, page;
- unsigned long idx, offset, base;
- bool dirty = true;
-
- assert(client < DIRTY_MEMORY_NUM);
-
- end = TARGET_PAGE_ALIGN(start + length) >> TARGET_PAGE_BITS;
- page = start >> TARGET_PAGE_BITS;
-
- RCU_READ_LOCK_GUARD();
-
- blocks = qatomic_rcu_read(&ram_list.dirty_memory[client]);
-
- idx = page / DIRTY_MEMORY_BLOCK_SIZE;
- offset = page % DIRTY_MEMORY_BLOCK_SIZE;
- base = page - offset;
- while (page < end) {
- unsigned long next = MIN(end, base + DIRTY_MEMORY_BLOCK_SIZE);
- unsigned long num = next - base;
- unsigned long found = find_next_zero_bit(blocks->blocks[idx], num, offset);
- if (found < num) {
- dirty = false;
- break;
- }
-
- page = next;
- idx++;
- offset = 0;
- base += DIRTY_MEMORY_BLOCK_SIZE;
- }
-
- return dirty;
-}
-
bool cpu_physical_memory_get_dirty_flag(ram_addr_t addr, unsigned client);
bool cpu_physical_memory_is_clean(ram_addr_t addr);
-static inline uint8_t cpu_physical_memory_range_includes_clean(ram_addr_t start,
- ram_addr_t length,
- uint8_t mask)
-{
- uint8_t ret = 0;
-
- if (mask & (1 << DIRTY_MEMORY_VGA) &&
- !cpu_physical_memory_all_dirty(start, length, DIRTY_MEMORY_VGA)) {
- ret |= (1 << DIRTY_MEMORY_VGA);
- }
- if (mask & (1 << DIRTY_MEMORY_CODE) &&
- !cpu_physical_memory_all_dirty(start, length, DIRTY_MEMORY_CODE)) {
- ret |= (1 << DIRTY_MEMORY_CODE);
- }
- if (mask & (1 << DIRTY_MEMORY_MIGRATION) &&
- !cpu_physical_memory_all_dirty(start, length, DIRTY_MEMORY_MIGRATION)) {
- ret |= (1 << DIRTY_MEMORY_MIGRATION);
- }
- return ret;
-}
+uint8_t cpu_physical_memory_range_includes_clean(ram_addr_t start,
+ ram_addr_t length,
+ uint8_t mask);
static inline void cpu_physical_memory_set_dirty_flag(ram_addr_t addr,
unsigned client)
diff --git a/system/physmem.c b/system/physmem.c
index fb6a7378ff7..2667f289044 100644
--- a/system/physmem.c
+++ b/system/physmem.c
@@ -954,6 +954,66 @@ bool cpu_physical_memory_is_clean(ram_addr_t addr)
return !(vga && code && migration);
}
+static bool physical_memory_all_dirty(ram_addr_t start, ram_addr_t length,
+ unsigned client)
+{
+ DirtyMemoryBlocks *blocks;
+ unsigned long end, page;
+ unsigned long idx, offset, base;
+ bool dirty = true;
+
+ assert(client < DIRTY_MEMORY_NUM);
+
+ end = TARGET_PAGE_ALIGN(start + length) >> TARGET_PAGE_BITS;
+ page = start >> TARGET_PAGE_BITS;
+
+ RCU_READ_LOCK_GUARD();
+
+ blocks = qatomic_rcu_read(&ram_list.dirty_memory[client]);
+
+ idx = page / DIRTY_MEMORY_BLOCK_SIZE;
+ offset = page % DIRTY_MEMORY_BLOCK_SIZE;
+ base = page - offset;
+ while (page < end) {
+ unsigned long next = MIN(end, base + DIRTY_MEMORY_BLOCK_SIZE);
+ unsigned long num = next - base;
+ unsigned long found = find_next_zero_bit(blocks->blocks[idx],
+ num, offset);
+ if (found < num) {
+ dirty = false;
+ break;
+ }
+
+ page = next;
+ idx++;
+ offset = 0;
+ base += DIRTY_MEMORY_BLOCK_SIZE;
+ }
+
+ return dirty;
+}
+
+uint8_t cpu_physical_memory_range_includes_clean(ram_addr_t start,
+ ram_addr_t length,
+ uint8_t mask)
+{
+ uint8_t ret = 0;
+
+ if (mask & (1 << DIRTY_MEMORY_VGA) &&
+ !physical_memory_all_dirty(start, length, DIRTY_MEMORY_VGA)) {
+ ret |= (1 << DIRTY_MEMORY_VGA);
+ }
+ if (mask & (1 << DIRTY_MEMORY_CODE) &&
+ !physical_memory_all_dirty(start, length, DIRTY_MEMORY_CODE)) {
+ ret |= (1 << DIRTY_MEMORY_CODE);
+ }
+ if (mask & (1 << DIRTY_MEMORY_MIGRATION) &&
+ !physical_memory_all_dirty(start, length, DIRTY_MEMORY_MIGRATION)) {
+ ret |= (1 << DIRTY_MEMORY_MIGRATION);
+ }
+ return ret;
+}
+
/* Note: start and end must be within the same ram block. */
bool cpu_physical_memory_test_and_clear_dirty(ram_addr_t start,
ram_addr_t length,
--
2.51.0
next prev parent reply other threads:[~2025-10-04 7:16 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-04 7:12 [PULL 00/41] Memory patches for 2025-10-04 Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 01/41] system/ramblock: Remove obsolete comment Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 02/41] system/ramblock: Move ram_block_is_pmem() declaration Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 03/41] system/ramblock: Move ram_block_discard_*_range() declarations Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 04/41] system/ramblock: Rename @start -> @offset in ram_block_discard_range() Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 05/41] system/ramblock: Move RAMBlock helpers out of "system/ram_addr.h" Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 06/41] system/memory: Split address_space_write_rom_internal Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 07/41] docs/devel/loads-stores: Stop mentioning cpu_physical_memory_write_rom() Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 08/41] system/memory: Factor address_space_is_io() out Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 09/41] target/i386/arch_memory_mapping: Use address_space_memory_is_io() Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 10/41] hw/s390x/sclp: Use address_space_memory_is_io() in sclp_service_call() Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 11/41] system/physmem: Remove cpu_physical_memory_is_io() Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 12/41] system/physmem: Pass address space argument to cpu_flush_icache_range() Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 13/41] hw/s390x/sclp: Replace [cpu_physical_memory -> address_space]_r/w() Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 14/41] target/s390x/mmu: Replace [cpu_physical_memory -> address_space]_rw() Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 15/41] target/i386/whpx: Replace legacy cpu_physical_memory_rw() call Philippe Mathieu-Daudé
2025-10-04 17:51 ` Richard Henderson
2025-10-06 3:53 ` Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 16/41] target/i386/kvm: " Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 17/41] target/i386/nvmm: Inline cpu_physical_memory_rw() in nvmm_mem_callback Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 18/41] hw/xen/hvm: Inline cpu_physical_memory_rw() in rw_phys_req_item() Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 19/41] system/physmem: Un-inline cpu_physical_memory_read/write() Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 20/41] system/physmem: Avoid cpu_physical_memory_rw when is_write is constant Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 21/41] system/physmem: Remove legacy cpu_physical_memory_rw() Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 22/41] hw/virtio/vhost: Replace legacy cpu_physical_memory_*map() calls Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 23/41] hw/virtio/virtio: Replace legacy cpu_physical_memory_map() call Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 24/41] system/ram_addr: Remove unnecessary 'exec/cpu-common.h' header Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 25/41] accel/kvm: Include missing 'exec/target_page.h' header Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 26/41] hw/s390x/s390-stattrib: " Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 27/41] hw/vfio/listener: " Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 28/41] target/arm/tcg/mte: " Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 29/41] hw: Remove unnecessary 'system/ram_addr.h' header Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 30/41] system/physmem: Un-inline cpu_physical_memory_get_dirty_flag() Philippe Mathieu-Daudé
2025-10-04 7:12 ` [PULL 31/41] system/physmem: Un-inline cpu_physical_memory_is_clean() Philippe Mathieu-Daudé
2025-10-04 7:12 ` Philippe Mathieu-Daudé [this message]
2025-10-04 7:12 ` [PULL 33/41] system/physmem: Un-inline cpu_physical_memory_set_dirty_flag() Philippe Mathieu-Daudé
2025-10-04 7:13 ` [PULL 34/41] system/physmem: Un-inline cpu_physical_memory_set_dirty_range() Philippe Mathieu-Daudé
2025-10-04 7:13 ` [PULL 35/41] system/physmem: Remove _WIN32 #ifdef'ry Philippe Mathieu-Daudé
2025-10-04 7:13 ` [PULL 36/41] system/physmem: Un-inline cpu_physical_memory_set_dirty_lebitmap() Philippe Mathieu-Daudé
2025-10-04 7:13 ` [PULL 37/41] system/physmem: Un-inline cpu_physical_memory_dirty_bits_cleared() Philippe Mathieu-Daudé
2025-10-04 7:13 ` [PULL 38/41] system/physmem: Reduce cpu_physical_memory_clear_dirty_range() scope Philippe Mathieu-Daudé
2025-10-04 7:13 ` [PULL 39/41] system/physmem: Reduce cpu_physical_memory_sync_dirty_bitmap() scope Philippe Mathieu-Daudé
2025-10-04 7:13 ` [PULL 40/41] system/physmem: Drop 'cpu_' prefix in Physical Memory API Philippe Mathieu-Daudé
2025-10-04 7:13 ` [PULL 41/41] system/physmem: Extract API out of 'system/ram_addr.h' header Philippe Mathieu-Daudé
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