[PATCH v2] ppc/xive: Fix uint32_t overflow

[Cédric Le Goater]

As reported by Coverity, "idx << xive->pc_shift" is evaluated using
32-bit arithmetic, and then used in a context expecting a "uint64_t".
Add a uint64_t cast.

Fixes: Coverity CID 1519049
Fixes: b68147b7a5bf ("ppc/xive: Add support for the PC MMIOs")
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Frederic Barrat <fbarrat@linux.ibm.com>
---

 v2: removed extra space after cast
 
 hw/intc/pnv_xive.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/intc/pnv_xive.c b/hw/intc/pnv_xive.c
index 9b10e905195a..bda3478b1f84 100644
--- a/hw/intc/pnv_xive.c
+++ b/hw/intc/pnv_xive.c
@@ -210,7 +210,7 @@ static uint64_t pnv_xive_vst_addr_remote(PnvXive *xive, 
uint32_t type,
         return 0;
     }
 
-    remote_addr |= idx << xive->pc_shift;
+    remote_addr |= ((uint64_t)idx) << xive->pc_shift;
 
     vst_addr = address_space_ldq_be(&address_space_memory, remote_addr,
                                     MEMTXATTRS_UNSPECIFIED, &result);
-- 
2.41.0