Hello Vijay,
On 09/02/17 15:57, vijay.kil...@gmail.com wrote:
From: Vijaya Kumar K <vijaya.ku...@cavium.com>
Delete numa-node-id and distance map from Dom0 DT
so that NUMA information is not exposed to Dom0.
This helps particularly to boot Node 1 devices
as if booting on Node0.
However this approach has limitation where memory allocation
for the devices should be local.
We had a discussion about this few weeks ago but you never answered
back... (see [1]).
If there is an issue, please provides input with examples and what will
happen.
Signed-off-by: Vijaya Kumar <vijaya.ku...@cavium.com>
---
xen/arch/arm/domain_build.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index c97a1f5..5e89eaa 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -424,6 +424,10 @@ static int write_properties(struct domain *d, struct
kernel_info *kinfo,
}
}
+ /* Don't expose the property numa to the guest */
+ if ( dt_property_name_is_equal(prop, "numa-node-id") )
+ continue;
+
/* Don't expose the property "xen,passthrough" to the guest */
if ( dt_property_name_is_equal(prop, "xen,passthrough") )
continue;
@@ -1176,6 +1180,11 @@ static int handle_node(struct domain *d, struct
kernel_info *kinfo,
DT_MATCH_TYPE("memory"),
/* The memory mapped timer is not supported by Xen. */
DT_MATCH_COMPATIBLE("arm,armv7-timer-mem"),
+ /*
+ * NUMA info is not exposed to Dom0.
+ * So, skip distance-map infomation
+ */
+ DT_MATCH_COMPATIBLE("numa-distance-map-v1"),
{ /* sentinel */ },
};
static const struct dt_device_match timer_matches[] __initconst =
Regards,
[1]
https://lists.xenproject.org/archives/html/xen-devel/2016-12/msg02073.html
--
Julien Grall
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