Re: [Qemu-devel] [PATCH 2/2] ivshmem: convert option 'use64' to a bit instead of integer

["Michael S. Tsirkin" <mst@redhat.com>]

On Mon, Aug 04, 2014 at 05:06:21PM +0200, Levente Kurusa wrote:
> It was expecting an integer, however the sole usecase of it just
> checked whether it was assigned to or not. Hence, remove integerness,
> and add a new bitfield instead.
> 
> Signed-off-by: Levente Kurusa <lkurusa@redhat.com>

This might break some existing scripts.
If you want to address this, add a new type that
can accept both integer and bool.

> ---
>  hw/misc/ivshmem.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/hw/misc/ivshmem.c b/hw/misc/ivshmem.c
> index 79603c0..eac85ad 100644
> --- a/hw/misc/ivshmem.c
> +++ b/hw/misc/ivshmem.c
> @@ -34,6 +34,7 @@
>  
>  #define IVSHMEM_IOEVENTFD   0
>  #define IVSHMEM_MSI     1
> +#define IVSHMEM_64BIT   2
>  
>  #define IVSHMEM_PEER    0
>  #define IVSHMEM_MASTER  1
> @@ -83,7 +84,6 @@ typedef struct IVShmemState {
>      MemoryRegion ivshmem;
>      uint64_t ivshmem_size; /* size of shared memory region */
>      uint32_t ivshmem_attr;
> -    uint32_t ivshmem_64bit;
>      int shm_fd; /* shared memory file descriptor */
>  
>      Peer *peers;
> @@ -706,7 +706,7 @@ static int pci_ivshmem_init(PCIDevice *dev)
>      memory_region_init(&s->bar, OBJECT(s), "ivshmem-bar2-container", s->ivshmem_size);
>      s->ivshmem_attr = PCI_BASE_ADDRESS_SPACE_MEMORY |
>          PCI_BASE_ADDRESS_MEM_PREFETCH;
> -    if (s->ivshmem_64bit) {
> +    if (ivshmem_has_feature(s, IVSHMEM_64BIT)) {
>          s->ivshmem_attr |= PCI_BASE_ADDRESS_MEM_TYPE_64;
>      }
>  
> @@ -804,7 +804,7 @@ static Property ivshmem_properties[] = {
>      DEFINE_PROP_BIT("msi", IVShmemState, features, IVSHMEM_MSI, true),
>      DEFINE_PROP_STRING("shm", IVShmemState, shmobj),
>      DEFINE_PROP_STRING("role", IVShmemState, role),
> -    DEFINE_PROP_UINT32("use64", IVShmemState, ivshmem_64bit, 1),
> +    DEFINE_PROP_BIT("use64", IVShmemState, features, IVSHMEM_64BIT, true),
>      DEFINE_PROP_END_OF_LIST(),
>  };
>  
> -- 
> 1.9.3