X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=exec.c;h=05ad67d3fdafcc598387a813b3148eaeec65c3d7;hb=29d8ec7beebbf4d8f6094df91ad383b98d768b32;hp=c71f2d558a920e42f343657c3a87e8f2159d856d;hpb=a2f4d5bef2cfde557d76fc45a40d2c89b6bed4e4;p=mirror_qemu.git

diff --git a/exec.c b/exec.c
index c71f2d558a..05ad67d3fd 100644
--- a/exec.c
+++ b/exec.c
@@ -50,6 +50,7 @@
 #include "translate-all.h"
 
 #include "exec/memory-internal.h"
+#include "exec/ram_addr.h"
 #include "qemu/cache-utils.h"
 
 #include "qemu/range.h"
@@ -57,7 +58,7 @@
 //#define DEBUG_SUBPAGE
 
 #if !defined(CONFIG_USER_ONLY)
-static int in_migration;
+static bool in_migration;
 
 RAMList ram_list = { .blocks = QTAILQ_HEAD_INITIALIZER(ram_list.blocks) };
 
@@ -338,6 +339,18 @@ address_space_translate_internal(AddressSpaceDispatch *d, hwaddr addr, hwaddr *x
     return section;
 }
 
+static inline bool memory_access_is_direct(MemoryRegion *mr, bool is_write)
+{
+    if (memory_region_is_ram(mr)) {
+        return !(is_write && mr->readonly);
+    }
+    if (memory_region_is_romd(mr)) {
+        return !is_write;
+    }
+
+    return false;
+}
+
 MemoryRegion *address_space_translate(AddressSpace *as, hwaddr addr,
                                       hwaddr *xlat, hwaddr *plen,
                                       bool is_write)
@@ -367,6 +380,11 @@ MemoryRegion *address_space_translate(AddressSpace *as, hwaddr addr,
         as = iotlb.target_as;
     }
 
+    if (memory_access_is_direct(mr, is_write)) {
+        hwaddr page = ((addr & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE) - addr;
+        len = MIN(page, len);
+    }
+
     *plen = len;
     *xlat = addr;
     return mr;
@@ -485,7 +503,8 @@ static void breakpoint_invalidate(CPUState *cpu, target_ulong pc)
 {
     hwaddr phys = cpu_get_phys_page_debug(cpu, pc);
     if (phys != -1) {
-        tb_invalidate_phys_addr(phys | (pc & ~TARGET_PAGE_MASK));
+        tb_invalidate_phys_addr(&address_space_memory,
+                                phys | (pc & ~TARGET_PAGE_MASK));
     }
 }
 #endif
@@ -752,11 +771,9 @@ void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t length,
     }
 }
 
-static int cpu_physical_memory_set_dirty_tracking(int enable)
+static void cpu_physical_memory_set_dirty_tracking(bool enable)
 {
-    int ret = 0;
     in_migration = enable;
-    return ret;
 }
 
 hwaddr memory_region_section_get_iotlb(CPUArchState *env,
@@ -1071,7 +1088,7 @@ static void *file_ram_alloc(RAMBlock *block,
         }
 
         /* MAP_POPULATE silently ignores failures */
-        for (i = 0; i < (memory/hpagesize)-1; i++) {
+        for (i = 0; i < (memory/hpagesize); i++) {
             memset(area + (hpagesize*i), 0, 1);
         }
 
@@ -1798,12 +1815,12 @@ static void tcg_commit(MemoryListener *listener)
 
 static void core_log_global_start(MemoryListener *listener)
 {
-    cpu_physical_memory_set_dirty_tracking(1);
+    cpu_physical_memory_set_dirty_tracking(true);
 }
 
 static void core_log_global_stop(MemoryListener *listener)
 {
-    cpu_physical_memory_set_dirty_tracking(0);
+    cpu_physical_memory_set_dirty_tracking(false);
 }
 
 static MemoryListener core_memory_listener = {
@@ -1924,18 +1941,6 @@ static void invalidate_and_set_dirty(hwaddr addr,
     xen_modified_memory(addr, length);
 }
 
-static inline bool memory_access_is_direct(MemoryRegion *mr, bool is_write)
-{
-    if (memory_region_is_ram(mr)) {
-        return !(is_write && mr->readonly);
-    }
-    if (memory_region_is_romd(mr)) {
-        return !is_write;
-    }
-
-    return false;
-}
-
 static int memory_access_size(MemoryRegion *mr, unsigned l, hwaddr addr)
 {
     unsigned access_size_max = mr->ops->valid.max_access_size;