[Xen-devel] [PATCH V2 06/33] xen/arm: Load dtb after dom0 kernel

[Julien Grall <julien.grall@xxxxxxxxxx>]

On some setup, the first linux page table is at 0x40004000. Xen will load
dom0 device tree at 0x4000100. In case of the device tree is big, linux will
corrupt the device tree.

Signed-off-by: Julien Grall <julien.grall@xxxxxxxxxx>
Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
---
 xen/arch/arm/domain_build.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index 8748272..6581492 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -407,8 +407,9 @@ int construct_dom0(struct domain *d)
     /* The following loads use the domain's p2m */
     p2m_load_VTTBR(d);
 
-    dtb_load(&kinfo);
+    kinfo.dtb_paddr = kinfo.zimage.load_addr + kinfo.zimage.len;
     kernel_load(&kinfo);
+    dtb_load(&kinfo);
 
     discard_initial_modules();
 
-- 
Julien Grall


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