Hi Thomas, Anatoly,

On 10/7/2017 5:07 PM, Thomas Monjalon wrote:
07/10/2017 13:20, Hemant Agrawal:
In case no_pci is configured, other buses e.g. fslmc bus will
still need the the vfio to be enabled.

Signed-off-by: Hemant Agrawal <hemant.agra...@nxp.com>
---
v2: enabled VFIO, independent of no-pci flag as suggested by Thomas
[...]
--- a/lib/librte_eal/linuxapp/eal/eal.c
+++ b/lib/librte_eal/linuxapp/eal/eal.c
@@ -733,10 +733,8 @@ static int rte_eal_vfio_setup(void)
 {
        int vfio_enabled = 0;

-       if (!internal_config.no_pci) {
-               pci_vfio_enable();
-               vfio_enabled |= pci_vfio_is_enabled();
-       }
+       pci_vfio_enable();
+       vfio_enabled |= pci_vfio_is_enabled();

You are enabling vfio_pci.
This part could stay conditionned by no_pci.

I was thinking you need vfio without vfio_pci. Am I right?

yes
If yes, I suggest to enable only vfio root module.


vfio_enable should be done only once. So, if I enable it for "vfio", pci_vfio_enable is not required. In any case it is not storing any PCI specific data and there are no error checks here of "vfio_pci" enable failure.

So, if we use,
        vfio_enable("vfio");
        vfio_enabled |= vfio_is_enabled("vfio");

It seems no_pci check will not have any value.

let me know your thoughts?

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