Mailing List Archive

arm: implement do_set_trap_table function

Signed-off-by: Jaemin Ryu <jm77.ryu@samsung.com>

diff -r 334dfdebde12 xen/arch/arm/xen/fault.c
--- a/xen/arch/arm/xen/fault.c Sun Feb 12 11:46:52 2012 +0900
+++ b/xen/arch/arm/xen/fault.c Sun Feb 12 11:54:33 2012 +0900
@@ -118,6 +118,22 @@ void unregister_guest_nmi_callback(void)

long do_set_trap_table(XEN_GUEST_HANDLE(trap_info_t) traps)
{
+ unsigned long trap_table;
+
+ if ( guest_handle_is_null(traps) )
+ goto failed;
+
+ trap_table = (unsigned long)traps.p;
+
+ current->arch.ctx.vbar = trap_table;
+
+ return 0;
+
+failed:
+ current->arch.ctx.vbar = 0;
+
+ printk("Trap table install failed\n");
+
return -EFAULT;
}