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| author | Ingo Molnar <mingo@kernel.org> | 2012-03-26 17:18:44 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-03-26 17:19:03 +0200 |
| commit | 7fd52392c56361a40f0c630a82b36b95ca31eac6 (patch) | |
| tree | 14091de24c6b28ea4cae9826f98aeedb7be091f5 /arch/x86/pci/xen.c | |
| parent | perf: Move mmap page data_head offset assertion out of header (diff) | |
| parent | Merge tag 'stable/for-linus-3.4-tag-two' of git://git.kernel.org/pub/scm/linu... (diff) | |
| download | linux-7fd52392c56361a40f0c630a82b36b95ca31eac6.tar.xz linux-7fd52392c56361a40f0c630a82b36b95ca31eac6.zip | |
Merge branch 'linus' into perf/urgent
Merge reason: we need to fix a non-trivial merge conflict.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/pci/xen.c')
| -rw-r--r-- | arch/x86/pci/xen.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c index d99346ea8fdb..7415aa927913 100644 --- a/arch/x86/pci/xen.c +++ b/arch/x86/pci/xen.c @@ -324,6 +324,32 @@ static int xen_initdom_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) out: return ret; } + +static void xen_initdom_restore_msi_irqs(struct pci_dev *dev, int irq) +{ + int ret = 0; + + if (pci_seg_supported) { + struct physdev_pci_device restore_ext; + + restore_ext.seg = pci_domain_nr(dev->bus); + restore_ext.bus = dev->bus->number; + restore_ext.devfn = dev->devfn; + ret = HYPERVISOR_physdev_op(PHYSDEVOP_restore_msi_ext, + &restore_ext); + if (ret == -ENOSYS) + pci_seg_supported = false; + WARN(ret && ret != -ENOSYS, "restore_msi_ext -> %d\n", ret); + } + if (!pci_seg_supported) { + struct physdev_restore_msi restore; + + restore.bus = dev->bus->number; + restore.devfn = dev->devfn; + ret = HYPERVISOR_physdev_op(PHYSDEVOP_restore_msi, &restore); + WARN(ret && ret != -ENOSYS, "restore_msi -> %d\n", ret); + } +} #endif static void xen_teardown_msi_irqs(struct pci_dev *dev) @@ -446,6 +472,7 @@ int __init pci_xen_initial_domain(void) #ifdef CONFIG_PCI_MSI x86_msi.setup_msi_irqs = xen_initdom_setup_msi_irqs; x86_msi.teardown_msi_irq = xen_teardown_msi_irq; + x86_msi.restore_msi_irqs = xen_initdom_restore_msi_irqs; #endif xen_setup_acpi_sci(); __acpi_register_gsi = acpi_register_gsi_xen; |