Re: [Qemu-devel] [PATCH 1/2] intel_iommu: remove X86_IOMMU_PCI_DEVFN_MAX

["Liu, Yi L" <yi.l.liu@linux.intel.com>]

On Fri, Dec 08, 2017 at 12:26:53PM +0800, Peter Xu wrote:

Looks good to me.

Reviewed-by: Liu, Yi L <yi.l.liu@intel.com>

> We have PCI_DEVFN_MAX now.
> 
> Signed-off-by: Peter Xu <peterx@redhat.com>
> ---
>  hw/i386/intel_iommu.c       | 10 +++++-----
>  include/hw/i386/x86-iommu.h |  1 -
>  2 files changed, 5 insertions(+), 6 deletions(-)
> 
> diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
> index 3a5bb0bc2e..c1fa08d205 100644
> --- a/hw/i386/intel_iommu.c
> +++ b/hw/i386/intel_iommu.c
> @@ -186,7 +186,7 @@ static void vtd_reset_context_cache(IntelIOMMUState *s)
>      g_hash_table_iter_init(&bus_it, s->vtd_as_by_busptr);
>  
>      while (g_hash_table_iter_next (&bus_it, NULL, (void**)&vtd_bus)) {
> -        for (devfn_it = 0; devfn_it < X86_IOMMU_PCI_DEVFN_MAX; ++devfn_it) {
> +        for (devfn_it = 0; devfn_it < PCI_DEVFN_MAX; ++devfn_it) {
>              vtd_as = vtd_bus->dev_as[devfn_it];
>              if (!vtd_as) {
>                  continue;
> @@ -1002,7 +1002,7 @@ static void vtd_switch_address_space_all(IntelIOMMUState *s)
>  
>      g_hash_table_iter_init(&iter, s->vtd_as_by_busptr);
>      while (g_hash_table_iter_next(&iter, NULL, (void **)&vtd_bus)) {
> -        for (i = 0; i < X86_IOMMU_PCI_DEVFN_MAX; i++) {
> +        for (i = 0; i < PCI_DEVFN_MAX; i++) {
>              if (!vtd_bus->dev_as[i]) {
>                  continue;
>              }
> @@ -1294,7 +1294,7 @@ static void vtd_context_device_invalidate(IntelIOMMUState *s,
>      vtd_bus = vtd_find_as_from_bus_num(s, bus_n);
>      if (vtd_bus) {
>          devfn = VTD_SID_TO_DEVFN(source_id);
> -        for (devfn_it = 0; devfn_it < X86_IOMMU_PCI_DEVFN_MAX; ++devfn_it) {
> +        for (devfn_it = 0; devfn_it < PCI_DEVFN_MAX; ++devfn_it) {
>              vtd_as = vtd_bus->dev_as[devfn_it];
>              if (vtd_as && ((devfn_it & mask) == (devfn & mask))) {
>                  trace_vtd_inv_desc_cc_device(bus_n, VTD_PCI_SLOT(devfn_it),
> @@ -2699,7 +2699,7 @@ VTDAddressSpace *vtd_find_add_as(IntelIOMMUState *s, PCIBus *bus, int devfn)
>          *new_key = (uintptr_t)bus;
>          /* No corresponding free() */
>          vtd_bus = g_malloc0(sizeof(VTDBus) + sizeof(VTDAddressSpace *) * \
> -                            X86_IOMMU_PCI_DEVFN_MAX);
> +                            PCI_DEVFN_MAX);
>          vtd_bus->bus = bus;
>          g_hash_table_insert(s->vtd_as_by_busptr, new_key, vtd_bus);
>      }
> @@ -2982,7 +2982,7 @@ static AddressSpace *vtd_host_dma_iommu(PCIBus *bus, void *opaque, int devfn)
>      IntelIOMMUState *s = opaque;
>      VTDAddressSpace *vtd_as;
>  
> -    assert(0 <= devfn && devfn < X86_IOMMU_PCI_DEVFN_MAX);
> +    assert(0 <= devfn && devfn < PCI_DEVFN_MAX);
>  
>      vtd_as = vtd_find_add_as(s, bus, devfn);
>      return &vtd_as->as;
> diff --git a/include/hw/i386/x86-iommu.h b/include/hw/i386/x86-iommu.h
> index ef89c0c646..7c71fc7470 100644
> --- a/include/hw/i386/x86-iommu.h
> +++ b/include/hw/i386/x86-iommu.h
> @@ -31,7 +31,6 @@
>  #define  X86_IOMMU_GET_CLASS(obj) \
>      OBJECT_GET_CLASS(X86IOMMUClass, obj, TYPE_X86_IOMMU_DEVICE)
>  
> -#define X86_IOMMU_PCI_DEVFN_MAX           256
>  #define X86_IOMMU_SID_INVALID             (0xffff)
>  
>  typedef struct X86IOMMUState X86IOMMUState;
> -- 
> 2.14.3
> 
>