diff mbox series

[v8,8/9] xen/arm: enable statically shared memory on Dom0

Message ID 20220908135513.1800511-9-Penny.Zheng@arm.com (mailing list archive)
State New, archived
Headers show
Series static shared memory on dom0less system | expand

Commit Message

Penny Zheng Sept. 8, 2022, 1:55 p.m. UTC 
From: Penny Zheng <penny.zheng@arm.com>

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@arm.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
---
v8 changes:
- no change
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v7 changes:
- no change
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v6 change:
- no change
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v5 change:
- no change
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v4 change:
- no change
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v3 change:
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v2 change:
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---
 xen/arch/arm/domain_build.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
diff mbox series

Patch

diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index cd03370b38..8c77c764bc 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -2705,6 +2705,11 @@  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,
+                                    &kinfo->shm_mem);
+        if ( res )
+            return res;
     }
 
     res = fdt_end_node(kinfo->fdt);
@@ -3780,6 +3785,9 @@  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);
@@ -3814,6 +3822,12 @@  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, &kinfo, 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 )