diff options
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/main.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/linux-user/main.c b/linux-user/main.c index aa95db3a6d..23ad357b50 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -48,8 +48,19 @@ unsigned long mmap_min_addr; #if defined(CONFIG_USE_GUEST_BASE) unsigned long guest_base; int have_guest_base; +#if (TARGET_LONG_BITS == 32) && (HOST_LONG_BITS == 64) +/* + * When running 32-on-64 we should make sure we can fit all of the possible + * guest address space into a contiguous chunk of virtual host memory. + * + * This way we will never overlap with our own libraries or binaries or stack + * or anything else that QEMU maps. + */ +unsigned long reserved_va = 0xf7000000; +#else unsigned long reserved_va; #endif +#endif static void usage(void); |