[Xen-devel] [PATCH V2 3/3] vl.c: Check the asked ram_size later.

[Anthony PERARD <anthony.perard@xxxxxxxxxx>]

As a Xen guest can have more than 2GB of RAM on a 32bit host, we move
the conditions after than we now if we run one Xen or not.

Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
---
 vl.c |   14 ++++++++------
 1 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/vl.c b/vl.c
index fcd7395..c2efedf 100644
--- a/vl.c
+++ b/vl.c
@@ -2433,11 +2433,6 @@ int main(int argc, char **argv, char **envp)
                     exit(1);
                 }
 
-                /* On 32-bit hosts, QEMU is limited by virtual address space */
-                if (value > (2047 << 20) && HOST_LONG_BITS == 32) {
-                    fprintf(stderr, "qemu: at most 2047 MB RAM can be 
simulated\n");
-                    exit(1);
-                }
                 if (value != (uint64_t)(ram_addr_t)value) {
                     fprintf(stderr, "qemu: ram size too large\n");
                     exit(1);
@@ -3091,8 +3086,15 @@ int main(int argc, char **argv, char **envp)
         exit(1);
 
     /* init the memory */
-    if (ram_size == 0)
+    if (ram_size == 0) {
         ram_size = DEFAULT_RAM_SIZE * 1024 * 1024;
+    } else if (!xen_enabled()) {
+        /* On 32-bit hosts, QEMU is limited by virtual address space */
+        if (ram_size > (2047 << 20) && HOST_LONG_BITS == 32) {
+            fprintf(stderr, "qemu: at most 2047 MB RAM can be simulated\n");
+            exit(1);
+        }
+    }
 
     /* init the dynamic translator */
     cpu_exec_init_all(tb_size * 1024 * 1024);
-- 
Anthony PERARD


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