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[PATCH v3 4/6] xen/arm: introduce CDF_staticmem
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Penny Zheng <Penny.Zheng@xxxxxxx>
- Date: Wed, 27 Apr 2022 17:27:41 +0800
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- Cc: <wei.chen@xxxxxxx>, <henry.wang@xxxxxxx>, Penny Zheng <Penny.Zheng@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, "Julien Grall" <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, "Jan Beulich" <jbeulich@xxxxxxxx>, Wei Liu <wl@xxxxxxx>, Penny Zheng <penny.zheng@xxxxxxx>
- Delivery-date: Wed, 27 Apr 2022 09:29:10 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Nodisclaimer: true
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.
Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Signed-off-by: Penny Zheng <penny.zheng@xxxxxxx>
---
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
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