exec: Split out variable page size support to exec-vary.c

The next patch will play a trick with "const" that will
confuse the compiler about the uses of target_page_bits
within exec.c.  Moving everything to a new file prevents
this confusion.

No functional change so far.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 0 insertions, 34 deletions

diff --git a/exec.c b/exec.c
index fb0943c..5bf181d 100644
--- a/exec.c
+++ b/exec.c
@@ -91,11 +91,6 @@ AddressSpace address_space_memory;
 static MemoryRegion io_mem_unassigned;
 #endif
 
-#ifdef TARGET_PAGE_BITS_VARY
-int target_page_bits;
-bool target_page_bits_decided;
-#endif
-
 CPUTailQ cpus = QTAILQ_HEAD_INITIALIZER(cpus);
 
 /* current CPU in the current thread. It is only valid inside
@@ -109,37 +104,8 @@ int use_icount;
 uintptr_t qemu_host_page_size;
 intptr_t qemu_host_page_mask;
 
-bool set_preferred_target_page_bits(int bits)
-{
-    /* The target page size is the lowest common denominator for all
-     * the CPUs in the system, so we can only make it smaller, never
-     * larger. And we can't make it smaller once we've committed to
-     * a particular size.
-     */
-#ifdef TARGET_PAGE_BITS_VARY
-    assert(bits >= TARGET_PAGE_BITS_MIN);
-    if (target_page_bits == 0 || target_page_bits > bits) {
-        if (target_page_bits_decided) {
-            return false;
-        }
-        target_page_bits = bits;
-    }
-#endif
-    return true;
-}
-
 #if !defined(CONFIG_USER_ONLY)
 
-static void finalize_target_page_bits(void)
-{
-#ifdef TARGET_PAGE_BITS_VARY
-    if (target_page_bits == 0) {
-        target_page_bits = TARGET_PAGE_BITS_MIN;
-    }
-    target_page_bits_decided = true;
-#endif
-}
-
 typedef struct PhysPageEntry PhysPageEntry;
 
 struct PhysPageEntry {