aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--target-i386/arch_memory_mapping.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/target-i386/arch_memory_mapping.c b/target-i386/arch_memory_mapping.c
index c6c7874474..844893f44d 100644
--- a/target-i386/arch_memory_mapping.c
+++ b/target-i386/arch_memory_mapping.c
@@ -115,7 +115,7 @@ static void walk_pde2(MemoryMappingList *list,
hwaddr pde_start_addr, int32_t a20_mask,
bool pse)
{
- hwaddr pde_addr, pte_start_addr, start_paddr;
+ hwaddr pde_addr, pte_start_addr, start_paddr, high_paddr;
uint32_t pde;
target_ulong line_addr, start_vaddr;
int i;
@@ -130,8 +130,13 @@ static void walk_pde2(MemoryMappingList *list,
line_addr = (((unsigned int)i & 0x3ff) << 22);
if ((pde & PG_PSE_MASK) && pse) {
- /* 4 MB page */
- start_paddr = (pde & ~0x3fffff) | ((pde & 0x1fe000) << 19);
+ /*
+ * 4 MB page:
+ * bits 39:32 are bits 20:13 of the PDE
+ * bit3 31:22 are bits 31:22 of the PDE
+ */
+ high_paddr = ((hwaddr)(pde & 0x1fe000) << 19);
+ start_paddr = (pde & ~0x3fffff) | high_paddr;
if (cpu_physical_memory_is_io(start_paddr)) {
/* I/O region */
continue;