From 097b8cb840a31ec526cc58778bd8cbab0d2beaaa Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Mon, 20 Aug 2012 11:36:32 +0100 Subject: [PATCH] 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: Peter Maydell Signed-off-by: Riku Voipio --- linux-user/main.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/linux-user/main.c b/linux-user/main.c index b1c228a249..1a1c661ee4 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -3519,7 +3519,10 @@ int main(int argc, char **argv, char **envp) guest_base = init_guest_space(guest_base, reserved_va, 0, have_guest_base); 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", + reserved_va); exit(1); }