On Tue, 25 Nov 2014, Boris Ostrovsky wrote: > On 11/25/2014 07:06 AM, Stefano Stabellini wrote: > > On Mon, 24 Nov 2014, Boris Ostrovsky wrote: > > > If the hardware supports APIC virtualization we may decide not to use > > > pirqs > > > and instead use APIC/x2APIC directly, meaning that we don't want to set > > > x86_msi.setup_msi_irqs and x86_msi.teardown_msi_irq to Xen-specific > > > routines. > > > However, x2APIC is not set up by the time pci_xen_hvm_init() is called so > > > we > > > need to postpone setting these ops until later, when we know which APIC > > > mode > > > is used. > > > > > > (Note that currently x2APIC is never initialized on HVM guests. This may > > > change in the future) > > I take that this is safe because no MSIs can be received at this point > > (apic_post_init), right? > > > Yes. At the time apic_post_init() is called PCI has not been probed yet.
Please add that to the commit message. Acked-by: Stefano Stabellini <[email protected]> -- 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/
