irqchip/gic-v3: Fix ICC_SGI1R_EL1.INTID decoding mask

commit dd5f1b049dc139876801db3cdd0f20d21fd428cc upstream.

The INTID mask is wrong, and is made a signed value, which has
nteresting effects in the KVM emulation. Let's sanitize it.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/include/linux/irqchip/arm-gic-v3.h b/include/linux/irqchip/arm-gic-v3.h
index d5d798b35c1f6c105c81d0993bce6140bc4fc83b..e98425058f20dc6483a04ca7327409c6743d5d23 100644 (file)
--- a/include/linux/irqchip/arm-gic-v3.h
+++ b/include/linux/irqchip/arm-gic-v3.h
@@ -301,7 +301,7 @@
 #define ICC_SGI1R_AFFINITY_1_SHIFT     16
 #define ICC_SGI1R_AFFINITY_1_MASK      (0xff << ICC_SGI1R_AFFINITY_1_SHIFT)
 #define ICC_SGI1R_SGI_ID_SHIFT         24
-#define ICC_SGI1R_SGI_ID_MASK          (0xff << ICC_SGI1R_SGI_ID_SHIFT)
+#define ICC_SGI1R_SGI_ID_MASK          (0xfULL << ICC_SGI1R_SGI_ID_SHIFT)
 #define ICC_SGI1R_AFFINITY_2_SHIFT     32
 #define ICC_SGI1R_AFFINITY_2_MASK      (0xffULL << ICC_SGI1R_AFFINITY_1_SHIFT)
 #define ICC_SGI1R_IRQ_ROUTING_MODE_BIT 40