Re: AMD 8131 MSI quirk called too late, bus_flags not inherited ?

On Wed, May 24, 2006 at 07:59:58PM +0300, Michael S. Tsirkin wrote:
> 
> Offtopic, something I wanted to bring up with respect to MSI,
> but never had the time to debug:
> 
> If I do
> 
> pci_enable_msix, pci_disable_msix
> 
> then later
> 
> pci_enable_msi
> 
> on the same device fails with the following message:
> PCI: 0000:08:00.0: Can't enable MSI.  Device already has MSI-X vectors assigned
> 
> This is not something new - has been happening since forever.
> Looks like not all MSI-X vectors get properly unassigned by pci_disable_msix.
> 
Yes, this has been reported by others too. I've been looking at
MSI code recently to fix an unrelated problem, and noticed that
the code has policies about vector reservation that prevent
what you're trying to do. I'm planning to clean up the MSI
code shortly (patches out hopefully by next week), and will
remove such policies since many people are trying to do this.

thanks,
Rajesh
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• References:
  • AMD 8131 MSI quirk called too late, bus_flags not inherited ?
    • From: Brice Goglin <[email protected]>
  • Re: AMD 8131 MSI quirk called too late, bus_flags not inherited ?
    • From: Greg KH <[email protected]>
  • Re: AMD 8131 MSI quirk called too late, bus_flags not inherited ?
    • From: "Michael S. Tsirkin" <[email protected]>
  • Re: AMD 8131 MSI quirk called too late, bus_flags not inherited ?
    • From: Brice Goglin <[email protected]>
  • Re: AMD 8131 MSI quirk called too late, bus_flags not inherited ?
    • From: "Michael S. Tsirkin" <[email protected]>
  • Re: AMD 8131 MSI quirk called too late, bus_flags not inherited ?
    • From: Brice Goglin <[email protected]>
  • Re: AMD 8131 MSI quirk called too late, bus_flags not inherited ?
    • From: "Michael S. Tsirkin" <[email protected]>
  • Re: AMD 8131 MSI quirk called too late, bus_flags not inherited ?
    • From: Brice Goglin <[email protected]>
  • Re: AMD 8131 MSI quirk called too late, bus_flags not inherited ?
    • From: Greg KH <[email protected]>
  • Re: AMD 8131 MSI quirk called too late, bus_flags not inherited ?
    • From: "Michael S. Tsirkin" <[email protected]>

• Prev by Date: Re: Ingo's realtime_preempt patch causes kernel oops
• Next by Date: Re: Ingo's realtime_preempt patch causes kernel oops
• Previous by thread: Re: AMD 8131 MSI quirk called too late, bus_flags not inherited ?
• Next by thread: Re: AMD 8131 MSI quirk called too late, bus_flags not inherited ?
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]