[PATCH 1/9] xen/arm: Check Xen size when linking

[Julien Grall <julien@xxxxxxx>]

The linker will happily link Xen if it is bigger than what we can handle
(e.g 2MB). This will result to unexpected failure after boot.

This unexpected failure can be prevented by forbidding linking if Xen is
bigger than the area we reversed.

Signed-off-by: Julien Grall <julien@xxxxxxx>
---
 xen/arch/arm/xen.lds.S | 1 +
 1 file changed, 1 insertion(+)

diff --git a/xen/arch/arm/xen.lds.S b/xen/arch/arm/xen.lds.S
index be58c2c39514..c5d8c6201423 100644
--- a/xen/arch/arm/xen.lds.S
+++ b/xen/arch/arm/xen.lds.S
@@ -241,3 +241,4 @@ ASSERT(IS_ALIGNED(__init_begin,     4), "__init_begin is 
misaligned")
 ASSERT(IS_ALIGNED(__init_end,       4), "__init_end is misaligned")
 ASSERT(IS_ALIGNED(__bss_start,      POINTER_ALIGN), "__bss_start is 
misaligned")
 ASSERT(IS_ALIGNED(__bss_end,        POINTER_ALIGN), "__bss_end is misaligned")
+ASSERT((_end - start) <= XEN_VIRT_SIZE, "Xen is too big")
-- 
2.40.1