Commit 097b8cb8 authored by Peter Maydell's avatar Peter Maydell Committed by Riku Voipio

linux-user: Clarify "Unable to reserve guest address space" error

Now that we default to reserving nearly 4GB of RAM for the guest
address space when running a 32 bit linux-user guest on 64 bit
hosts, users are much more likely to run into it. Reword the
message to be more informative about what failed and provide
suggestions for how to fix things.
Signed-off-by: default avatarPeter Maydell <>
Signed-off-by: default avatarRiku Voipio <>
parent 333858b7
......@@ -3519,7 +3519,10 @@ int main(int argc, char **argv, char **envp)
guest_base = init_guest_space(guest_base, reserved_va, 0,
if (guest_base == (unsigned long)-1) {
fprintf(stderr, "Unable to reserve guest address space\n");
fprintf(stderr, "Unable to reserve 0x%lx bytes of virtual address "
"space for use as guest address space (check your virtual "
"memory ulimit setting or reserve less using -R option)\n",
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