[3/3] linux-user: Clarify "Unable to reserve guest address space" error

Message ID 097b8cb840a31ec526cc58778bd8cbab0d2beaaa.1346088997.git.riku.voipio@linaro.org
State New
Headers show

Commit Message

Riku Voipio Aug. 27, 2012, 6:22 p.m.
From: Peter Maydell <peter.maydell@linaro.org>

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 <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
 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 b1c228a..1a1c661 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,
         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);