[Xen-devel] [PATCH 03/18] arm/altp2m: Add HVMOP_altp2m_get_domain_state.

[Sergej Proskurin <proskurin@xxxxxxxxxxxxx>]

This commit adopts the x86 HVMOP_altp2m_get_domain_state implementation.

Signed-off-by: Sergej Proskurin <proskurin@xxxxxxxxxxxxx>
---
Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Cc: Julien Grall <julien.grall@xxxxxxx>
---
 xen/arch/arm/hvm.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/xen/arch/arm/hvm.c b/xen/arch/arm/hvm.c
index 1118f22..8e8e0f7 100644
--- a/xen/arch/arm/hvm.c
+++ b/xen/arch/arm/hvm.c
@@ -93,7 +93,14 @@ static int do_altp2m_op(XEN_GUEST_HANDLE_PARAM(void) arg)
     switch ( a.cmd )
     {
     case HVMOP_altp2m_get_domain_state:
-        rc = -EOPNOTSUPP;
+        if ( !d->arch.hvm_domain.params[HVM_PARAM_ALTP2M] )
+        {
+            rc = -EINVAL;
+            break;
+        }
+
+        a.u.domain_state.state = altp2m_active(d);
+        rc = __copy_to_guest(arg, &a, 1) ? -EFAULT : 0;
         break;
 
     case HVMOP_altp2m_set_domain_state:
-- 
2.8.3


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