[Xen-devel] [PATCH] xen/arm: Fix return value when write is ignored in VGIC

[Julien Grall <julien.grall@xxxxxxxxxx>]

From: Anthony PERARD <anthony.perard@xxxxxxxxxx>

If a write is ignored, the function should return success.

Currently Xen will throw a data abort exception if the write in VGIC is
ignored.

Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
---
 xen/arch/arm/vgic.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/arm/vgic.c b/xen/arch/arm/vgic.c
index 6cceb0f..6aaafe9 100644
--- a/xen/arch/arm/vgic.c
+++ b/xen/arch/arm/vgic.c
@@ -592,7 +592,7 @@ bad_width:
 
 write_ignore:
     if ( dabt.size != 2 ) goto bad_width;
-    return 0;
+    return 1;
 }
 
 static int vgic_distr_mmio_check(struct vcpu *v, paddr_t addr)
-- 
1.7.10.4


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