page-vary: Build finalize_target_page_bits as common code

Use target_info->page_bits_init to merge
finalize_target_page_bits_common into
finalize_target_page_bits in page-vary-common.c.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-ID: <20260217095106.598486-6-richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

include/exec/page-vary.h

@@ -40,10 +40,6 @@ typedef struct {
     uint64_t mask;
 } TargetPageBits;
 
-#ifdef IN_PAGE_VARY
-void finalize_target_page_bits_common(int min);
-#endif
-
 /**
  * set_preferred_target_page_bits:
  * @bits: number of bits needed to represent an address within the page

page-vary-common.c

@@ -50,11 +50,18 @@ bool set_preferred_target_page_bits(int bits)
     return true;
 }
 
-void finalize_target_page_bits_common(int min)
+void finalize_target_page_bits(void)
 {
-    if (target_page.bits == 0) {
-        target_page.bits = min;
+    int bits = target_page.bits;
+
+    if (bits == 0) {
+        const TargetInfo *ti = target_info();
+
+        bits = ti->page_bits_init;
+        assert(bits != 0);
+        target_page.bits = bits;
     }
-    target_page.mask = -1ull << target_page.bits;
+
+    target_page.mask = -1ull << bits;
     target_page.decided = true;
 }

page-vary-target.c

@@ -38,15 +38,3 @@ int migration_legacy_page_bits(void)
 #endif
 }
 #endif
-
-void finalize_target_page_bits(void)
-{
-#ifndef TARGET_PAGE_BITS_VARY
-    finalize_target_page_bits_common(TARGET_PAGE_BITS);
-#elif defined(CONFIG_USER_ONLY)
-    assert(target_page.bits != 0);
-    finalize_target_page_bits_common(target_page.bits);
-#else
-    finalize_target_page_bits_common(TARGET_PAGE_BITS_LEGACY);
-#endif
-}