[Qemu-devel] [PATCH 1/6] powerpc pci: fixed packing of ranges[]

[Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>]

From: Alexey Kardashevskiy <aik@ozlabs.ru>

By default mingw-gcc is trying to pack structures the way to
preserve binary compatibility with MS Visual C what leads to
incorrect and unexpected padding in the PCI bus ranges property of
the sPAPR PHB.

The patch replaces __attribute__((packed)) with more strict QEMU_PACKED
which actually is __attribute__((gcc_struct, packed)) on Windows.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Tested-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
---
 hw/spapr_pci.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/spapr_pci.c b/hw/spapr_pci.c
index 47ba5ff..b2e4f78 100644
--- a/hw/spapr_pci.c
+++ b/hw/spapr_pci.c
@@ -418,7 +418,7 @@ int spapr_populate_pci_devices(sPAPRPHBState *phb,
         uint64_t child;
         uint64_t parent;
         uint64_t size;
-    } __attribute__((packed)) ranges[] = {
+    } QEMU_PACKED ranges[] = {
         {
             cpu_to_be32(b_ss(1)), cpu_to_be64(0),
             cpu_to_be64(phb->io_win_addr),
-- 
1.7.10.4