On Wed, Oct 10, 2012 at 10:51 AM, Marcelo Tosatti <mtosatti@xxxxxxxxxx> wrote:
> On Mon, Oct 08, 2012 at 06:36:11PM -0600, Shuah Khan wrote:
>> Change existing kernel error message to include return value from
>> iommu_attach_device() when it fails. This will help debug device
>> assignment failures more effectively.
>>
>> Signed-off-by: Shuah Khan <shuah.khan@xxxxxx>
>> ---
>> virt/kvm/iommu.c | 6 +-----
>> 1 file changed, 1 insertion(+), 5 deletions(-)
>>
>> diff --git a/virt/kvm/iommu.c b/virt/kvm/iommu.c
>> index 037cb67..18e1e30 100644
>> --- a/virt/kvm/iommu.c
>> +++ b/virt/kvm/iommu.c
>> @@ -168,11 +168,7 @@ int kvm_assign_device(struct kvm *kvm,
>>
>> r = iommu_attach_device(domain, &pdev->dev);
>> if (r) {
>> - printk(KERN_ERR "assign device %x:%x:%x.%x failed",
>> - pci_domain_nr(pdev->bus),
>> - pdev->bus->number,
>> - PCI_SLOT(pdev->devfn),
>> - PCI_FUNC(pdev->devfn));
>> + dev_err(&pdev->dev, "kvm assign device failed ret %d", r);
>> return r;
>> }
>
> Why removal of domain,bus,slot,func from the message?
>
dev_err() includes that information like this:
pci 0000:00:1d.0: assign device failed ret 0
Without the removal of domain,bus,slot,func from the message:
It will look like:
pci 0000:00:1d.0: assign device 0:0:1d.0 failed ret 0
Initially I left it in there and after testing, realized it is
duplicate information and decided to remove it.
-- Shuah
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