[Xen-devel] [PATCH v4 18/39] 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>
Acked-by: Julien Grall <julien.grall@xxxxxxx>
---
Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Cc: Julien Grall <julien.grall@xxxxxxx>
---
v4: Moved the introduced macro from ./xen/arch/arm/p2m.c to
    ./xen/include/asm-arm/p2m.h as it will be used in multiple files in the
    following commits.
---
 xen/include/asm-arm/p2m.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/xen/include/asm-arm/p2m.h b/xen/include/asm-arm/p2m.h
index e8a2116081..d3467daacf 100644
--- a/xen/include/asm-arm/p2m.h
+++ b/xen/include/asm-arm/p2m.h
@@ -14,6 +14,9 @@
 
 #define paddr_bits PADDR_BITS
 
+#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)       \
 ({                                                                  \
      ovttbr = READ_SYSREG64(VTTBR_EL2);                             \
-- 
2.13.3


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