diff options
Diffstat (limited to 'target-i386/helper.c')
| -rw-r--r-- | target-i386/helper.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/target-i386/helper.c b/target-i386/helper.c index b2c829926c..c3d307eeb4 100644 --- a/target-i386/helper.c +++ b/target-i386/helper.c @@ -1747,7 +1747,21 @@ void helper_cpuid(void) break; case 0x80000008: /* virtual & phys address size in low 2 bytes. */ - EAX = 0x00003028; +/* XXX: This value must match the one used in the MMU code. */ +#if defined(TARGET_X86_64) +# if defined(USE_KQEMU) + EAX = 0x00003020; /* 48 bits virtual, 32 bits physical */ +# else +/* XXX: The physical address space is limited to 42 bits in exec.c. */ + EAX = 0x00003028; /* 48 bits virtual, 40 bits physical */ +# endif +#else +# if defined(USE_KQEMU) + EAX = 0x00000020; /* 32 bits physical */ +# else + EAX = 0x00000024; /* 36 bits physical */ +# endif +#endif EBX = 0; ECX = 0; EDX = 0; |