On 07/18/2012 05:40 PM, Stefan Weil wrote:
Am 18.07.2012 10:22, schrieb Alexey Kardashevskiy:
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 <[email protected]>
---
  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 b3032d2..0261d2e 100644
--- a/hw/spapr_pci.c
+++ b/hw/spapr_pci.c
@@ -418,7 +418,7 @@ int spapr_populate_pci_dt(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),


The patch changes sizeof(ranges[0]) from 32 to 28 bytes
and can be applied as a trivial patch.

Tested-by: Stefan Weil <[email protected]>
Reviewed-by: Stefan Weil <[email protected]>


So do you want to take it through the trivial queue? I'm fine either way.

Acked-by: Alexander Graf <[email protected]>


Alex


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