Re: [Qemu-devel] [PATCH v4 07/47] ivshmem: remove superflous ivshmem_attr field

[Claudio Fontana <claudio.fontana@huawei.com>]

On 24.09.2015 13:37, marcandre.lureau@redhat.com wrote:
> From: Marc-André Lureau <marcandre.lureau@redhat.com>
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>  hw/misc/ivshmem.c | 16 +++++++---------
>  1 file changed, 7 insertions(+), 9 deletions(-)
> 
> diff --git a/hw/misc/ivshmem.c b/hw/misc/ivshmem.c
> index fbeb731..7138b8d 100644
> --- a/hw/misc/ivshmem.c
> +++ b/hw/misc/ivshmem.c
> @@ -85,7 +85,6 @@ typedef struct IVShmemState {
>      MemoryRegion bar;
>      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 */
>  
> @@ -345,7 +344,7 @@ static int check_shm_size(IVShmemState *s, int fd) {
>  
>  /* create the shared memory BAR when we are not using the server, so we can
>   * create the BAR and map the memory immediately */
> -static void create_shared_memory_BAR(IVShmemState *s, int fd) {
> +static void create_shared_memory_BAR(IVShmemState *s, int fd, uint8_t attr) {
>  
>      void * ptr;
>  
> @@ -359,7 +358,7 @@ static void create_shared_memory_BAR(IVShmemState *s, int fd) {
>      memory_region_add_subregion(&s->bar, 0, &s->ivshmem);
>  
>      /* region for shared memory */
> -    pci_register_bar(PCI_DEVICE(s), 2, s->ivshmem_attr, &s->bar);
> +    pci_register_bar(PCI_DEVICE(s), 2, attr, &s->bar);
>  }
>  
>  static void ivshmem_add_eventfd(IVShmemState *s, int posn, int i)
> @@ -714,6 +713,8 @@ static int pci_ivshmem_init(PCIDevice *dev)
>  {
>      IVShmemState *s = IVSHMEM(dev);
>      uint8_t *pci_conf;
> +    uint8_t attr = PCI_BASE_ADDRESS_SPACE_MEMORY |
> +        PCI_BASE_ADDRESS_MEM_PREFETCH;
>  
>      if (s->sizearg == NULL)
>          s->ivshmem_size = 4 << 20; /* 4 MB default */
> @@ -768,10 +769,8 @@ static int pci_ivshmem_init(PCIDevice *dev)
>                       &s->ivshmem_mmio);
>  
>      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) {
> -        s->ivshmem_attr |= PCI_BASE_ADDRESS_MEM_TYPE_64;
> +        attr |= PCI_BASE_ADDRESS_MEM_TYPE_64;
>      }
>  
>      if ((s->server_chr != NULL) &&
> @@ -798,7 +797,7 @@ static int pci_ivshmem_init(PCIDevice *dev)
>          /* allocate/initialize space for interrupt handling */
>          s->peers = g_malloc0(s->nb_peers * sizeof(Peer));
>  
> -        pci_register_bar(dev, 2, s->ivshmem_attr, &s->bar);
> +        pci_register_bar(dev, 2, attr, &s->bar);
>  
>          s->eventfd_chr = g_malloc0(s->vectors * sizeof(CharDriverState *));
>  
> @@ -835,8 +834,7 @@ static int pci_ivshmem_init(PCIDevice *dev)
>              exit(1);
>          }
>  
> -        create_shared_memory_BAR(s, fd);
> -
> +        create_shared_memory_BAR(s, fd, attr);
>      }
>  
>      dev->config_write = ivshmem_write_config;
> 

Reviewed-by: Claudio Fontana <claudio.fontana@huawei.com>