[Xen-devel] [PATCH v4 04/39] arm/p2m: 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>
---
v3: Removed the "altp2m_enabled" check in HVMOP_altp2m_get_domain_state
    case as it has been moved in front of the switch statement in
    "do_altp2m_op".

    Removed the macro "altp2m_enabled". Instead, check directly for the
    HVM_PARAM_ALTP2M param in d->arch.hvm_domain.
---
 xen/arch/arm/hvm.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/xen/arch/arm/hvm.c b/xen/arch/arm/hvm.c
index 6f5f9b41ac..43b8352cb7 100644
--- a/xen/arch/arm/hvm.c
+++ b/xen/arch/arm/hvm.c
@@ -85,7 +85,8 @@ static int do_altp2m_op(XEN_GUEST_HANDLE_PARAM(void) arg)
     switch ( a.cmd )
     {
     case HVMOP_altp2m_get_domain_state:
-        rc = -EOPNOTSUPP;
+        a.u.domain_state.state = altp2m_active(d);
+        rc = __copy_to_guest(arg, &a, 1) ? -EFAULT : 0;
         break;
 
     case HVMOP_altp2m_set_domain_state:
-- 
2.13.3


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