virtio: Notice when the system doesn't support MSIx at all
And do not issue an error_report in that case. Signed-off-by: Richard Henderson <rth@twiddle.net> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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@ -1491,12 +1491,17 @@ static void virtio_pci_device_plugged(DeviceState *d, Error **errp)
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pci_set_long(cfg_mask->pci_cfg_data, ~0x0);
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}
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if (proxy->nvectors &&
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msix_init_exclusive_bar(&proxy->pci_dev, proxy->nvectors,
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proxy->msix_bar)) {
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error_report("unable to init msix vectors to %" PRIu32,
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proxy->nvectors);
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proxy->nvectors = 0;
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if (proxy->nvectors) {
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int err = msix_init_exclusive_bar(&proxy->pci_dev, proxy->nvectors,
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proxy->msix_bar);
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if (err) {
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/* Notice when a system that supports MSIx can't initialize it. */
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if (err != -ENOTSUP) {
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error_report("unable to init msix vectors to %" PRIu32,
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proxy->nvectors);
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}
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proxy->nvectors = 0;
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}
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}
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proxy->pci_dev.config_write = virtio_write_config;
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