[PATCH v4 4/6] xen/arm: introduce CDF_staticmem

[Penny Zheng <Penny.Zheng@xxxxxxx>]

In order to have an easy and quick way to find out whether this domain memory
is statically configured, this commit introduces a new flag CDF_staticmem and a
new helper is_domain_using_staticmem() to tell.

Signed-off-by: Penny Zheng <penny.zheng@xxxxxxx>
Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
v4 changes:
- no changes
---
v3 changes:
- change name from "is_domain_static()" to "is_domain_using_staticmem"
---
v2 changes:
- change name from "is_domain_on_static_allocation" to "is_domain_static()"
---
 xen/arch/arm/domain_build.c       | 5 ++++-
 xen/arch/arm/include/asm/domain.h | 2 ++
 xen/include/xen/domain.h          | 2 ++
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index 1472ca4972..6830a282a0 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -3190,9 +3190,12 @@ void __init create_domUs(void)
         if ( !dt_device_is_compatible(node, "xen,domain") )
             continue;
 
+        if ( dt_find_property(node, "xen,static-mem", NULL) )
+            flags |= CDF_staticmem;
+
         if ( dt_property_read_bool(node, "direct-map") )
         {
-            if ( !IS_ENABLED(CONFIG_STATIC_MEMORY) || !dt_find_property(node, 
"xen,static-mem", NULL) )
+            if ( !IS_ENABLED(CONFIG_STATIC_MEMORY) || !(flags & CDF_staticmem) 
)
                 panic("direct-map is not valid for domain %s without static 
allocation.\n",
                       dt_node_name(node));
 
diff --git a/xen/arch/arm/include/asm/domain.h 
b/xen/arch/arm/include/asm/domain.h
index fe7a029ebf..110c672589 100644
--- a/xen/arch/arm/include/asm/domain.h
+++ b/xen/arch/arm/include/asm/domain.h
@@ -31,6 +31,8 @@ enum domain_type {
 
 #define is_domain_direct_mapped(d) ((d)->cdf & CDF_directmap)
 
+#define is_domain_using_staticmem(d) ((d)->cdf & CDF_staticmem)
+
 /*
  * Is the domain using the host memory layout?
  *
diff --git a/xen/include/xen/domain.h b/xen/include/xen/domain.h
index 1c3c88a14d..35dc7143a4 100644
--- a/xen/include/xen/domain.h
+++ b/xen/include/xen/domain.h
@@ -34,6 +34,8 @@ void arch_get_domain_info(const struct domain *d,
 #ifdef CONFIG_ARM
 /* Should domain memory be directly mapped? */
 #define CDF_directmap            (1U << 1)
+/* Is domain memory on static allocation? */
+#define CDF_staticmem            (1U << 2)
 #endif
 
 /*
-- 
2.25.1