Re: [Qemu-devel] [RFC PATCH 1/5] vfio/quirks: Add common quirk alloc helper

2018-02-08 Thread Alex Williamson
On Thu, 8 Feb 2018 12:10:35 +0100
Auger Eric  wrote:

> Hi Alex,
> On 07/02/18 01:26, Alex Williamson wrote:
> > This will later be used to include list initialization
> > 
> > Signed-off-by: Alex Williamson 
> > ---
> >  hw/vfio/pci-quirks.c |   48 
> > +---
> >  1 file changed, 21 insertions(+), 27 deletions(-)
> > 
> > diff --git a/hw/vfio/pci-quirks.c b/hw/vfio/pci-quirks.c
> > index e5779a7ad35b..10af23217292 100644
> > --- a/hw/vfio/pci-quirks.c
> > +++ b/hw/vfio/pci-quirks.c
> > @@ -275,6 +275,15 @@ static const MemoryRegionOps vfio_ati_3c3_quirk = {
> >  .endianness = DEVICE_LITTLE_ENDIAN,
> >  };
> >  
> > +static VFIOQuirk *vfio_quirk_alloc(int nr_mem)
> > +{
> > +VFIOQuirk *quirk = g_malloc0(sizeof(*quirk));  
> nit: Peter advised the usage of g_new0 as well for that kind of alloc.

Not my favorite interface, but good point.  Updated and R-b added.
Thanks,

Alex



Re: [Qemu-devel] [RFC PATCH 1/5] vfio/quirks: Add common quirk alloc helper

2018-02-08 Thread Auger Eric
Hi Alex,
On 07/02/18 01:26, Alex Williamson wrote:
> This will later be used to include list initialization
> 
> Signed-off-by: Alex Williamson 
> ---
>  hw/vfio/pci-quirks.c |   48 +---
>  1 file changed, 21 insertions(+), 27 deletions(-)
> 
> diff --git a/hw/vfio/pci-quirks.c b/hw/vfio/pci-quirks.c
> index e5779a7ad35b..10af23217292 100644
> --- a/hw/vfio/pci-quirks.c
> +++ b/hw/vfio/pci-quirks.c
> @@ -275,6 +275,15 @@ static const MemoryRegionOps vfio_ati_3c3_quirk = {
>  .endianness = DEVICE_LITTLE_ENDIAN,
>  };
>  
> +static VFIOQuirk *vfio_quirk_alloc(int nr_mem)
> +{
> +VFIOQuirk *quirk = g_malloc0(sizeof(*quirk));
nit: Peter advised the usage of g_new0 as well for that kind of alloc.
> +quirk->mem = g_new0(MemoryRegion, nr_mem);
> +quirk->nr_mem = nr_mem;
> +
> +return quirk;
> +}
> +
>  static void vfio_vga_probe_ati_3c3_quirk(VFIOPCIDevice *vdev)
>  {
>  VFIOQuirk *quirk;
> @@ -288,9 +297,7 @@ static void vfio_vga_probe_ati_3c3_quirk(VFIOPCIDevice 
> *vdev)
>  return;
>  }
>  
> -quirk = g_malloc0(sizeof(*quirk));
> -quirk->mem = g_new0(MemoryRegion, 1);
> -quirk->nr_mem = 1;
> +quirk = vfio_quirk_alloc(1);
>  
>  memory_region_init_io(quirk->mem, OBJECT(vdev), &vfio_ati_3c3_quirk, 
> vdev,
>"vfio-ati-3c3-quirk", 1);
> @@ -323,9 +330,7 @@ static void vfio_probe_ati_bar4_quirk(VFIOPCIDevice 
> *vdev, int nr)
>  return;
>  }
>  
> -quirk = g_malloc0(sizeof(*quirk));
> -quirk->mem = g_new0(MemoryRegion, 2);
> -quirk->nr_mem = 2;
> +quirk = vfio_quirk_alloc(2);
>  window = quirk->data = g_malloc0(sizeof(*window) +
>   sizeof(VFIOConfigWindowMatch));
>  window->vdev = vdev;
> @@ -371,10 +376,9 @@ static void vfio_probe_ati_bar2_quirk(VFIOPCIDevice 
> *vdev, int nr)
>  return;
>  }
>  
> -quirk = g_malloc0(sizeof(*quirk));
> +quirk = vfio_quirk_alloc(1);
>  mirror = quirk->data = g_malloc0(sizeof(*mirror));
> -mirror->mem = quirk->mem = g_new0(MemoryRegion, 1);
> -quirk->nr_mem = 1;
> +mirror->mem = quirk->mem;
>  mirror->vdev = vdev;
>  mirror->offset = 0x4000;
>  mirror->bar = nr;
> @@ -548,10 +552,8 @@ static void 
> vfio_vga_probe_nvidia_3d0_quirk(VFIOPCIDevice *vdev)
>  return;
>  }
>  
> -quirk = g_malloc0(sizeof(*quirk));
> +quirk = vfio_quirk_alloc(2);
>  quirk->data = data = g_malloc0(sizeof(*data));
> -quirk->mem = g_new0(MemoryRegion, 2);
> -quirk->nr_mem = 2;
>  data->vdev = vdev;
>  
>  memory_region_init_io(&quirk->mem[0], OBJECT(vdev), 
> &vfio_nvidia_3d4_quirk,
> @@ -667,9 +669,7 @@ static void vfio_probe_nvidia_bar5_quirk(VFIOPCIDevice 
> *vdev, int nr)
>  return;
>  }
>  
> -quirk = g_malloc0(sizeof(*quirk));
> -quirk->mem = g_new0(MemoryRegion, 4);
> -quirk->nr_mem = 4;
> +quirk = vfio_quirk_alloc(4);
>  bar5 = quirk->data = g_malloc0(sizeof(*bar5) +
> (sizeof(VFIOConfigWindowMatch) * 2));
>  window = &bar5->window;
> @@ -762,10 +762,9 @@ static void vfio_probe_nvidia_bar0_quirk(VFIOPCIDevice 
> *vdev, int nr)
>  return;
>  }
>  
> -quirk = g_malloc0(sizeof(*quirk));
> +quirk = vfio_quirk_alloc(1);
>  mirror = quirk->data = g_malloc0(sizeof(*mirror));
> -mirror->mem = quirk->mem = g_new0(MemoryRegion, 1);
> -quirk->nr_mem = 1;
> +mirror->mem = quirk->mem;
>  mirror->vdev = vdev;
>  mirror->offset = 0x88000;
>  mirror->bar = nr;
> @@ -781,10 +780,9 @@ static void vfio_probe_nvidia_bar0_quirk(VFIOPCIDevice 
> *vdev, int nr)
>  
>  /* The 0x1800 offset mirror only seems to get used by legacy VGA */
>  if (vdev->vga) {
> -quirk = g_malloc0(sizeof(*quirk));
> +quirk = vfio_quirk_alloc(1);
>  mirror = quirk->data = g_malloc0(sizeof(*mirror));
> -mirror->mem = quirk->mem = g_new0(MemoryRegion, 1);
> -quirk->nr_mem = 1;
> +mirror->mem = quirk->mem;
>  mirror->vdev = vdev;
>  mirror->offset = 0x1800;
>  mirror->bar = nr;
> @@ -945,9 +943,7 @@ static void vfio_probe_rtl8168_bar2_quirk(VFIOPCIDevice 
> *vdev, int nr)
>  return;
>  }
>  
> -quirk = g_malloc0(sizeof(*quirk));
> -quirk->mem = g_new0(MemoryRegion, 2);
> -quirk->nr_mem = 2;
> +quirk = vfio_quirk_alloc(2);
>  quirk->data = rtl = g_malloc0(sizeof(*rtl));
>  rtl->vdev = vdev;
>  
> @@ -1507,9 +1503,7 @@ static void vfio_probe_igd_bar4_quirk(VFIOPCIDevice 
> *vdev, int nr)
>  }
>  
>  /* Setup our quirk to munge GTT addresses to the VM allocated buffer */
> -quirk = g_malloc0(sizeof(*quirk));
> -quirk->mem = g_new0(MemoryRegion, 2);
> -quirk->nr_mem = 2;
> +quirk = vfio_quirk_alloc(2);
>  igd = quirk->data = g_malloc0(sizeof(*igd));
>  igd->vdev = vdev;
>  igd->index = ~0;
> 
Reviewed-by