Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-3.0-pull-request...

[qemu.git] / exec.c

diff --git a/exec.c b/exec.c
index 9f35e34ad202662139cb724bc35f46e5a136259c..4f5df07b6a26a8aea869c6baac820a0097c79d51 100644 (file)
--- a/exec.c
+++ b/exec.c
@@ -1028,13 +1028,40 @@ const char *parse_cpu_model(const char *cpu_model)
 }
 
 #if defined(CONFIG_USER_ONLY)
-static void breakpoint_invalidate(CPUState *cpu, target_ulong pc)
+void tb_invalidate_phys_addr(target_ulong addr)
 {
     mmap_lock();
-    tb_invalidate_phys_page_range(pc, pc + 1, 0);
+    tb_invalidate_phys_page_range(addr, addr + 1, 0);
     mmap_unlock();
 }
+
+static void breakpoint_invalidate(CPUState *cpu, target_ulong pc)
+{
+    tb_invalidate_phys_addr(pc);
+}
 #else
+void tb_invalidate_phys_addr(AddressSpace *as, hwaddr addr, MemTxAttrs attrs)
+{
+    ram_addr_t ram_addr;
+    MemoryRegion *mr;
+    hwaddr l = 1;
+
+    if (!tcg_enabled()) {
+        return;
+    }
+
+    rcu_read_lock();
+    mr = address_space_translate(as, addr, &addr, &l, false, attrs);
+    if (!(memory_region_is_ram(mr)
+          || memory_region_is_romd(mr))) {
+        rcu_read_unlock();
+        return;
+    }
+    ram_addr = memory_region_get_ram_addr(mr) + addr;
+    tb_invalidate_phys_page_range(ram_addr, ram_addr + 1, 0);
+    rcu_read_unlock();
+}
+
 static void breakpoint_invalidate(CPUState *cpu, target_ulong pc)
 {
     MemTxAttrs attrs;
@@ -1818,6 +1845,10 @@ static void *file_ram_alloc(RAMBlock *block,
                    " must be multiples of page size 0x%zx",
                    block->mr->align, block->page_size);
         return NULL;
+    } else if (block->mr->align && !is_power_of_2(block->mr->align)) {
+        error_setg(errp, "alignment 0x%" PRIx64
+                   " must be a power of two", block->mr->align);
+        return NULL;
     }
     block->mr->align = MAX(block->page_size, block->mr->align);
 #if defined(__s390x__)
@@ -3146,9 +3177,7 @@ static void invalidate_and_set_dirty(MemoryRegion *mr, hwaddr addr,
     }
     if (dirty_log_mask & (1 << DIRTY_MEMORY_CODE)) {
         assert(tcg_enabled());
-        mmap_lock();
         tb_invalidate_phys_range(addr, addr + length);
-        mmap_unlock();
         dirty_log_mask &= ~(1 << DIRTY_MEMORY_CODE);
     }
     cpu_physical_memory_set_dirty_range(addr, length, dirty_log_mask);