[Xen-devel] [PATCH v3 20/38] arm/p2m: Add p2m_get_active_p2m macro

[Sergej Proskurin <proskurin@xxxxxxxxxxxxx>]

This commit introduces the macro "p2m_get_active_p2m" returning the
currently active (alt)p2m. The need for this macro will be shown in the
following commits.

Signed-off-by: Sergej Proskurin <proskurin@xxxxxxxxxxxxx>
---
Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Cc: Julien Grall <julien.grall@xxxxxxx>
---
 xen/arch/arm/p2m.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/xen/arch/arm/p2m.c b/xen/arch/arm/p2m.c
index 63c0df0..12b3dcc 100644
--- a/xen/arch/arm/p2m.c
+++ b/xen/arch/arm/p2m.c
@@ -29,6 +29,9 @@ static unsigned int __read_mostly p2m_root_level;
 
 #define P2M_ROOT_PAGES    (1<<P2M_ROOT_ORDER)
 
+#define p2m_get_active_p2m(v) unlikely(altp2m_active(v->domain)) ?  \
+                              altp2m_get_altp2m(v) : 
p2m_get_hostp2m(v->domain);
+
 #define p2m_switch_vttbr_and_get_flags(ovttbr, nvttbr, flags)       \
 ({                                                                  \
     if ( ovttbr != nvttbr )                                         \
-- 
2.9.0


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