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From: "Philippe Mathieu-Daudé" <philmd@linaro.org>
To: qemu-devel@nongnu.org
Cc: "Peter Maydell" <peter.maydell@linaro.org>,
	"Jagannathan Raman" <jag.raman@oracle.com>,
	qemu-ppc@nongnu.org, "Ilya Leoshkevich" <iii@linux.ibm.com>,
	"Thomas Huth" <thuth@redhat.com>,
	"Jason Herne" <jjherne@linux.ibm.com>,
	"Peter Xu" <peterx@redhat.com>,
	"Cédric Le Goater" <clg@redhat.com>,
	kvm@vger.kernel.org,
	"Christian Borntraeger" <borntraeger@linux.ibm.com>,
	"Halil Pasic" <pasic@linux.ibm.com>,
	"Matthew Rosato" <mjrosato@linux.ibm.com>,
	"Philippe Mathieu-Daudé" <philmd@linaro.org>,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	"Elena Ufimtseva" <elena.ufimtseva@oracle.com>,
	"Richard Henderson" <richard.henderson@linaro.org>,
	"Harsh Prateek Bora" <harshpb@linux.ibm.com>,
	"Fabiano Rosas" <farosas@suse.de>,
	"Eric Farman" <farman@linux.ibm.com>,
	qemu-arm@nongnu.org, qemu-s390x@nongnu.org,
	"David Hildenbrand" <david@redhat.com>,
	"Alex Williamson" <alex.williamson@redhat.com>,
	"Nicholas Piggin" <npiggin@gmail.com>
Subject: [PATCH v2 09/18] system/physmem: Un-inline cpu_physical_memory_range_includes_clean()
Date: Wed,  1 Oct 2025 19:54:38 +0200	[thread overview]
Message-ID: <20251001175448.18933-10-philmd@linaro.org> (raw)
In-Reply-To: <20251001175448.18933-1-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>
---
 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



  parent reply	other threads:[~2025-10-01 17:58 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-01 17:54 [PATCH v2 00/18] system/physmem: Extract API out of 'system/ram_addr.h' header Philippe Mathieu-Daudé
2025-10-01 17:54 ` [PATCH v2 01/18] system/ram_addr: Remove unnecessary 'exec/cpu-common.h' header Philippe Mathieu-Daudé
2025-10-01 17:54 ` [PATCH v2 02/18] accel/kvm: Include missing 'exec/target_page.h' header Philippe Mathieu-Daudé
2025-10-01 17:54 ` [PATCH v2 03/18] hw/s390x/s390-stattrib: " Philippe Mathieu-Daudé
2025-10-02 14:18   ` Eric Farman
2025-10-01 17:54 ` [PATCH v2 04/18] hw/vfio/listener: " Philippe Mathieu-Daudé
2025-10-02  8:31   ` Cédric Le Goater
2025-10-01 17:54 ` [PATCH v2 05/18] target/arm/tcg/mte: " Philippe Mathieu-Daudé
2025-10-01 17:54 ` [PATCH v2 06/18] hw: Remove unnecessary 'system/ram_addr.h' header Philippe Mathieu-Daudé
2025-10-01 19:32   ` Jag Raman
2025-10-02  8:37   ` Cédric Le Goater
2025-10-02 15:59   ` Harsh Prateek Bora
2025-10-02 17:38     ` Philippe Mathieu-Daudé
2025-10-02 16:45   ` Eric Farman
2025-10-01 17:54 ` [PATCH v2 07/18] system/physmem: Un-inline cpu_physical_memory_get_dirty_flag() Philippe Mathieu-Daudé
2025-10-01 17:54 ` [PATCH v2 08/18] system/physmem: Un-inline cpu_physical_memory_is_clean() Philippe Mathieu-Daudé
2025-10-01 17:54 ` Philippe Mathieu-Daudé [this message]
2025-10-01 17:54 ` [PATCH v2 10/18] system/physmem: Un-inline cpu_physical_memory_set_dirty_flag() Philippe Mathieu-Daudé
2025-10-01 17:54 ` [PATCH v2 11/18] system/physmem: Un-inline cpu_physical_memory_set_dirty_range() Philippe Mathieu-Daudé
2025-10-01 17:54 ` [PATCH v2 12/18] system/physmem: Remove _WIN32 #ifdef'ry Philippe Mathieu-Daudé
2025-10-01 21:00   ` Richard Henderson
2025-10-01 17:54 ` [PATCH v2 13/18] system/physmem: Un-inline cpu_physical_memory_set_dirty_lebitmap() Philippe Mathieu-Daudé
2025-10-01 17:54 ` [PATCH v2 14/18] system/physmem: Un-inline cpu_physical_memory_dirty_bits_cleared() Philippe Mathieu-Daudé
2025-10-01 17:54 ` [PATCH v2 15/18] system/physmem: Reduce cpu_physical_memory_clear_dirty_range() scope Philippe Mathieu-Daudé
2025-10-01 17:54 ` [PATCH v2 16/18] system/physmem: Reduce cpu_physical_memory_sync_dirty_bitmap() scope Philippe Mathieu-Daudé
2025-10-01 17:54 ` [PATCH v2 17/18] system/physmem: Drop 'cpu_' prefix in Physical Memory API Philippe Mathieu-Daudé
2025-10-02  8:39   ` Cédric Le Goater
2025-10-01 17:54 ` [PATCH v2 18/18] system/physmem: Extract API out of 'system/ram_addr.h' header Philippe Mathieu-Daudé
2025-10-02  8:31   ` Cédric Le Goater
2025-10-02  8:40   ` Cédric Le Goater
2025-10-03 20:54 ` [PATCH v2 00/18] " Philippe Mathieu-Daudé

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