[Xen-devel] Ping: [PATCH] AMD/IOMMU: adjust IOMMU list head initialization

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 10.04.19 at 11:37, <JBeulich@xxxxxxxx> wrote:
> Do this statically, which will allow accessing the (empty) list even
> without having come through acpi_ivrs_init().
> 
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
> 
> --- a/xen/drivers/passthrough/amd/iommu_init.c
> +++ b/xen/drivers/passthrough/amd/iommu_init.c
> @@ -36,7 +36,7 @@ static struct tasklet amd_iommu_irq_task
>  unsigned int __read_mostly ivrs_bdf_entries;
>  u8 __read_mostly ivhd_type;
>  static struct radix_tree_root ivrs_maps;
> -struct list_head amd_iommu_head;
> +LIST_HEAD_READ_MOSTLY(amd_iommu_head);
>  struct table_struct device_table;
>  bool_t iommuv2_enabled;
>  
> --- a/xen/drivers/passthrough/amd/pci_amd_iommu.c
> +++ b/xen/drivers/passthrough/amd/pci_amd_iommu.c
> @@ -150,8 +150,6 @@ static void amd_iommu_setup_domain_devic
>  
>  int __init acpi_ivrs_init(void)
>  {
> -    INIT_LIST_HEAD(&amd_iommu_head);
> -
>      if ( !iommu_enable && !iommu_intremap )
>          return 0;
>  
> 
> 
> 
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