lkml.org 
[lkml]   [2019]   [Oct]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v7 7/7] PCI: Skip Enhanced Allocation (EA) initialization for VF device
From
Date
Hi Bjorn,

On 8/28/19 3:14 PM, sathyanarayanan.kuppuswamy@linux.intel.com wrote:
> From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
>
> As per PCIe r4.0, sec 9.3.6, VF must not implement Enhanced Allocation
> Capability. So skip pci_ea_init() for virtual devices.
>
> Cc: Ashok Raj <ashok.raj@intel.com>
> Cc: Keith Busch <keith.busch@intel.com>
> Suggested-by: Ashok Raj <ashok.raj@intel.com>
> Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
This patch was also dropped in your v8. Is this also intentional?
> ---
> drivers/pci/pci.c | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
> index 1b27b5af3d55..266600a11769 100644
> --- a/drivers/pci/pci.c
> +++ b/drivers/pci/pci.c
> @@ -3025,6 +3025,13 @@ void pci_ea_init(struct pci_dev *dev)
> int offset;
> int i;
>
> + /*
> + * Per PCIe r4.0, sec 9.3.6, VF must not implement Enhanced
> + * Allocation Capability.
> + */
> + if (dev->is_virtfn)
> + return;
> +
> /* find PCI EA capability in list */
> ea = pci_find_capability(dev, PCI_CAP_ID_EA);
> if (!ea)

--
Sathyanarayanan Kuppuswamy
Linux kernel developer

\
 
 \ /
  Last update: 2019-10-03 19:28    [W:0.133 / U:0.760 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site