In the past I used Debian Etch Xen 3.2-1 with the Bastian Blank (waldi) kernels. I noticed some problems with MSI handling in that combination. As Debian kernels and Xen builds created problems for me with respect to powermanagement (time went backwards), I changed to the Xen kernel. So that was the basis of my guess, when I read that someones using a Debian kernel and an MSI based error message occured. By the option - as explained - you switch that off and use GSI instead. For me, I will check in one of the next steps, whether I can use my 4th PCI slot, that up to MSI support shared GSI IRQ with the PCIe slots that now have their own MSI. BR, Carsten. ----- Originalnachricht ----- Von: Jeff Williams <jeffw@globaldial.com> Gesendet: Don, 4.6.2009 08:15 An: Christoph Kaminski <mangel@gmx.de> Cc: Xen User-List <xen-users@lists.xensource.com> Betreff: Re: AW: [Xen-users] Debian Kernel and Xen 3.4 On 04/06/09 14:00, Christoph Kaminski wrote:> Hi! > > It does work with pci=nomsi... But what is the function of this > parameter? >nomsi If the PCI_MSI kernel config parameter is enabled, this kernel boot option can be used to disable the use of MSI interrupts system-wide. http://en.wikipedia.org/wiki/Message_Signaled_Interrupts Not sure why this has changed for 3.4 though? Regards, Jeff _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi! So if I right understand, I can get problems with IRQ sharing if I turn this option off? Its important in my system because I use pci hide. Greetz Carsten Schiers schrieb:> In the past I used Debian Etch Xen 3.2-1 with the Bastian Blank (waldi) kernels. > I noticed some problems with MSI handling in that combination. As Debian kernels > and Xen builds created problems for me with respect to powermanagement (time went > backwards), I changed to the Xen kernel. > > So that was the basis of my guess, when I read that someones using a Debian kernel > and an MSI based error message occured. By the option - as explained - you switch > that off and use GSI instead. > > For me, I will check in one of the next steps, whether I can use my 4th PCI slot, > that up to MSI support shared GSI IRQ with the PCIe slots that now have their own > MSI. > > BR, > Carsten. > >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
No, it meant you might get in trouble when you leave it on. At least with the mentioned combinations. Xen 3.4.1 with 2.6.18.8 works fine for me. GrC. ----- Originalnachricht ----- Von: Morbid Angel <mangel@gmx.de> Gesendet: Fre, 5.6.2009 11:23 An: Carsten Schiers <carsten@schiers.de> Cc: Xen User-List <xen-users@lists.xensource.com> Betreff: Re: AW: AW: [Xen-users] Debian Kernel and Xen 3.4 Hi! So if I right understand, I can get problems with IRQ sharing if I turn this option off? Its important in my system because I use pci hide. Greetz Carsten Schiers schrieb:> In the past I used Debian Etch Xen 3.2-1 with the Bastian Blank (waldi) kernels. > I noticed some problems with MSI handling in that combination. As Debian kernels > and Xen builds created problems for me with respect to powermanagement (time went > backwards), I changed to the Xen kernel. > > So that was the basis of my guess, when I read that someones using a Debian kernel > and an MSI based error message occured. By the option - as explained - you switch > that off and use GSI instead. > > For me, I will check in one of the next steps, whether I can use my 4th PCI slot, > that up to MSI support shared GSI IRQ with the PCIe slots that now have their own > MSI. > > BR, > Carsten. > >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users