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| author | Zhao Yan <yan.y.zhao@intel.com> | 2018-12-05 02:58:30 -0500 |
|---|---|---|
| committer | Anthony PERARD <anthony.perard@citrix.com> | 2019-01-14 13:45:40 +0000 |
| commit | 92dbfcc6d435a6f2331298b101ff396c7e643a55 (patch) | |
| tree | 4bb50af1aed869ef2b60362d4b6e92c32e308b3b /hw/xen/xen_pt_config_init.c | |
| parent | 6c4f984463a269e4d4f3684de957e3c548af409a (diff) | |
| download | focaccia-qemu-92dbfcc6d435a6f2331298b101ff396c7e643a55.tar.gz focaccia-qemu-92dbfcc6d435a6f2331298b101ff396c7e643a55.zip | |
xen/pt: allow passthrough of devices with bogus interrupt pin
For some pci device, even its PCI_INTERRUPT_PIN is not 0, it actually doesn't support INTx mode, so its machine irq read from host sysfs is 0. In that case, report PCI_INTERRUPT_PIN as 0 to guest and let passthrough continue. Reviewed-by: Roger Pau Monné <roger.pau@citrix.com> Signed-off-by: Zhao Yan <yan.y.zhao@intel.com> Acked-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Diffstat (limited to 'hw/xen/xen_pt_config_init.c')
| -rw-r--r-- | hw/xen/xen_pt_config_init.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/hw/xen/xen_pt_config_init.c b/hw/xen/xen_pt_config_init.c index 47f9010c75..9fd953a689 100644 --- a/hw/xen/xen_pt_config_init.c +++ b/hw/xen/xen_pt_config_init.c @@ -300,7 +300,9 @@ static int xen_pt_irqpin_reg_init(XenPCIPassthroughState *s, XenPTRegInfo *reg, uint32_t real_offset, uint32_t *data) { - *data = xen_pt_pci_read_intx(s); + if (s->real_device.irq) { + *data = xen_pt_pci_read_intx(s); + } return 0; } |