Re: [PATCH v9 01/16] PCI/CXL: Add pcie_is_cxl()

["Bowman, Terry" <terry.bowman@amd.com>]

On 6/4/2025 2:06 PM, Sathyanarayanan Kuppuswamy wrote:
> On 6/3/25 10:22 AM, Terry Bowman wrote:
>> CXL and AER drivers need the ability to identify CXL devices.
>>
>> Add set_pcie_cxl() with logic checking for CXL Flexbus DVSEC presence. The
>> CXL Flexbus DVSEC presence is used because it is required for all the CXL
>> PCIe devices.[1]
>>
>> Add boolean 'struct pci_dev::is_cxl' with the purpose to cache the CXL
>> Flexbus presence.
>>
>> Add function pcie_is_cxl() to return 'struct pci_dev::is_cxl'.
>>
>> [1] CXL 3.1 Spec, 8.1.1 PCIe Designated Vendor-Specific Extended
>>      Capability (DVSEC) ID Assignment, Table 8-2
>>
>> Signed-off-by: Terry Bowman <terry.bowman@amd.com>
>> Reviewed-by: Ira Weiny <ira.weiny@intel.com>
>> ---
> Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
>
Thanks for reviewing Kuppuswamy. Terry