On Tue, Feb 12, 2019 at 04:49:24PM +0000, Jonathan Cameron wrote:
> + case ACPI_SRAT_TYPE_GENERIC_INITIATOR_AFFINITY:
> + {
> + struct acpi_srat_gi_affinity *p =
> + (struct acpi_srat_gi_affinity *)header;
> + char name[9] = {};
> +
> + if (p->flags & ACPI_SRAT_GI_PCI_HANDLE) {
> + /*
> + * For pci devices this may be the only place they
> + * are assigned a proximity domain
> + */
> + pr_debug("SRAT Generic Initiator(Seg:%u BDF:%u) in
> proximity domain %d %s\n",
> + p->pci_handle.segment,
> + p->pci_handle.bdf,
> + p->proximity_domain,
> + (p->flags & ACPI_SRAT_GI_ENABLED) ?
> + "enabled" : "disabled");
<snip>
> +#define ACPI_SRAT_GI_ENABLED (1) /* 00: Use affinity structure */
> +#define ACPI_SRAT_GI_ACPI_HANDLE (0) /* 01: */
> +#define ACPI_SRAT_GI_PCI_HANDLE (1 << 1) /* 01: */
It looks like you're reading reserved bits. My copy of the 6.3 spec says
PCI Handle is 1, and is set in Device Handle Type field, not in the Flags.
> +/* 5 : Generic Initiator Affinity (ACPI 6.3) */
> +
> +struct acpi_srat_gi_affinity {
> + struct acpi_subtable_header header;
> + u8 reserved;
> + u8 device_handl_type;
> + u32 proximity_domain;
> + union {
> + struct acpi_srat_gi_acpi_handle acpi_handle;
> + struct acpi_srat_gi_pci_handle pci_handle;
> + };
> + u32 flags;
> + u32 reserved2;
> +};
