Merge tag 'misc-20230613' of https://github.com/philmd/qemu into staging

Misc patches queue

- user emulation: Preserve environment variable order
- macos/darwin/hvf: Fix build warnings, slighly optimize DCache flush
- target/i386: Minor cleanups, rename  template headers with '.inc' suffix
- target/hppa: Avoid building int_helper.o on user emulation
- hw: Add 'name' property to pca954x, export ISAParallelState, silent warnings
- hw/vfio: Trace number of bitmap dirty pages
- exec/memory: Introduce RAM_NAMED_FILE to distinct block without named backing store

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# gpg: Signature made Tue 13 Jun 2023 11:29:13 AM CEST
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# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [full]

* tag 'misc-20230613' of https://github.com/philmd/qemu:
  exec/memory: Introduce RAM_NAMED_FILE flag
  hw/vfio: Add number of dirty pages to vfio_get_dirty_bitmap tracepoint
  exec/ram_addr: Return number of dirty pages in cpu_physical_memory_set_dirty_lebitmap()
  hw/char/parallel-isa: Export struct ISAParallelState
  hw/char/parallel: Export struct ParallelState
  hw/scsi/megasas: Silent GCC duplicated-cond warning
  hw/ide/ahci: Remove stray backslash
  hw/i2c: Enable an id for the pca954x devices
  target/i386: Rename helper template headers as '.h.inc'
  target/i386/helper: Shuffle do_cpu_init()
  target/i386/helper: Remove do_cpu_sipi() stub for user-mode emulation
  target/hppa/meson: Only build int_helper.o with system emulation
  accel/hvf: Report HV_DENIED error
  util/cacheflush: Avoid possible redundant dcache flush on Darwin
  util/cacheflush: Use declarations from <OSCacheControl.h> on Darwin
  cocoa: Fix warnings about invalid prototype declarations
  linux-user, bsd-user: Preserve incoming order of environment variables in the target

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 22 insertions, 6 deletions

diff --git a/include/exec/ram_addr.h b/include/exec/ram_addr.h
index 90a8269290..9f2e3893f5 100644
--- a/include/exec/ram_addr.h
+++ b/include/exec/ram_addr.h
@@ -334,14 +334,23 @@ static inline void cpu_physical_memory_set_dirty_range(ram_addr_t start,
 }
 
 #if !defined(_WIN32)
-static inline void cpu_physical_memory_set_dirty_lebitmap(unsigned long *bitmap,
-                                                          ram_addr_t start,
-                                                          ram_addr_t pages)
+
+/*
+ * Contrary to cpu_physical_memory_sync_dirty_bitmap() this function returns
+ * the number of dirty pages in @bitmap passed as argument. On the other hand,
+ * cpu_physical_memory_sync_dirty_bitmap() returns newly dirtied pages that
+ * weren't set in the global migration bitmap.
+ */
+static inline
+uint64_t cpu_physical_memory_set_dirty_lebitmap(unsigned long *bitmap,
+                                                ram_addr_t start,
+                                                ram_addr_t pages)
 {
     unsigned long i, j;
-    unsigned long page_number, c;
+    unsigned long page_number, c, nbits;
     hwaddr addr;
     ram_addr_t ram_addr;
+    uint64_t num_dirty = 0;
     unsigned long len = (pages + HOST_LONG_BITS - 1) / HOST_LONG_BITS;
     unsigned long hpratio = qemu_real_host_page_size() / TARGET_PAGE_SIZE;
     unsigned long page = BIT_WORD(start >> TARGET_PAGE_BITS);
@@ -369,6 +378,7 @@ static inline void cpu_physical_memory_set_dirty_lebitmap(unsigned long *bitmap,
                 if (bitmap[k]) {
                     unsigned long temp = leul_to_cpu(bitmap[k]);
 
+                    nbits = ctpopl(temp);
                     qatomic_or(&blocks[DIRTY_MEMORY_VGA][idx][offset], temp);
 
                     if (global_dirty_tracking) {
@@ -377,10 +387,12 @@ static inline void cpu_physical_memory_set_dirty_lebitmap(unsigned long *bitmap,
                                 temp);
                         if (unlikely(
                             global_dirty_tracking & GLOBAL_DIRTY_DIRTY_RATE)) {
-                            total_dirty_pages += ctpopl(temp);
+                            total_dirty_pages += nbits;
                         }
                     }
 
+                    num_dirty += nbits;
+
                     if (tcg_enabled()) {
                         qatomic_or(&blocks[DIRTY_MEMORY_CODE][idx][offset],
                                    temp);
@@ -409,9 +421,11 @@ static inline void cpu_physical_memory_set_dirty_lebitmap(unsigned long *bitmap,
         for (i = 0; i < len; i++) {
             if (bitmap[i] != 0) {
                 c = leul_to_cpu(bitmap[i]);
+                nbits = ctpopl(c);
                 if (unlikely(global_dirty_tracking & GLOBAL_DIRTY_DIRTY_RATE)) {
-                    total_dirty_pages += ctpopl(c);
+                    total_dirty_pages += nbits;
                 }
+                num_dirty += nbits;
                 do {
                     j = ctzl(c);
                     c &= ~(1ul << j);
@@ -424,6 +438,8 @@ static inline void cpu_physical_memory_set_dirty_lebitmap(unsigned long *bitmap,
             }
         }
     }
+
+    return num_dirty;
 }
 #endif /* not _WIN32 */