hvm_memory_op() should take an unsigned long as cmd, like
do_memory_op().

As hvm_memory_op() is basically just calling do_memory_op() (or
compat_memory_op()) passing through the parameters the cmd parameter
should have no smaller size than that of the called functions.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
---
 xen/arch/x86/hvm/hypercall.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/x86/hvm/hypercall.c b/xen/arch/x86/hvm/hypercall.c
index 5be1050453..9d3b193bad 100644
--- a/xen/arch/x86/hvm/hypercall.c
+++ b/xen/arch/x86/hvm/hypercall.c
@@ -31,7 +31,7 @@
 #include <public/hvm/hvm_op.h>
 #include <public/hvm/params.h>
 
-static long hvm_memory_op(int cmd, XEN_GUEST_HANDLE_PARAM(void) arg)
+static long hvm_memory_op(unsigned long cmd, XEN_GUEST_HANDLE_PARAM(void) arg)
 {
     long rc;
 
-- 
2.26.2