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[PATCH v1 09/13] xen/arm: enable statically shared memory on Dom0
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Penny Zheng <Penny.Zheng@xxxxxxx>
- Date: Fri, 11 Mar 2022 14:11:19 +0800
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- Cc: <nd@xxxxxxx>, Penny Zheng <penny.zheng@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Fri, 11 Mar 2022 06:13:00 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Nodisclaimer: true
From: Penny Zheng <penny.zheng@xxxxxxx>
To add statically shared memory nodes in Dom0, user shall put according
static shared memory configuration under /chosen node.
This commit adds shm-processing function process_shm in construct_dom0
to enable statically shared memory on Dom0.
Signed-off-by: Penny Zheng <penny.zheng@xxxxxxx>
---
xen/arch/arm/domain_build.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index 997df46ddd..d35f98ff9c 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -2561,6 +2561,11 @@ static int __init handle_node(struct domain *d, struct
kernel_info *kinfo,
if ( res )
return res;
}
+
+ res = make_resv_memory_node(d, kinfo->fdt, addrcells, sizecells,
+ d->arch.shm_mem);
+ if ( res )
+ return res;
}
res = fdt_end_node(kinfo->fdt);
@@ -3572,6 +3577,9 @@ static int __init construct_dom0(struct domain *d)
{
struct kernel_info kinfo = {};
int rc;
+#ifdef CONFIG_STATIC_SHM
+ const struct dt_device_node *chosen = dt_find_node_by_path("/chosen");
+#endif
/* Sanity! */
BUG_ON(d->domain_id != 0);
@@ -3606,6 +3614,12 @@ static int __init construct_dom0(struct domain *d)
allocate_memory_11(d, &kinfo);
find_gnttab_region(d, &kinfo);
+#ifdef CONFIG_STATIC_SHM
+ rc = process_shm(d, chosen);
+ if ( rc < 0 )
+ return rc;
+#endif
+
/* Map extra GIC MMIO, irqs and other hw stuffs to dom0. */
rc = gic_map_hwdom_extra_mappings(d);
if ( rc < 0 )
--
2.25.1
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