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xen-devel
[Xen-devel] Re: [PATCH 5/5] vl.c: Check the asked ram_size later.
On 07/15/2011 04:32 PM, Anthony PERARD wrote:
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);
Acked-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Paolo
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