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Re: [Qemu-devel] [Xen-devel] [PATCH 3/4] xen: introduce an event channel
From: |
Stefano Stabellini |
Subject: |
Re: [Qemu-devel] [Xen-devel] [PATCH 3/4] xen: introduce an event channel for buffered io event notifications |
Date: |
Tue, 15 Nov 2011 17:20:51 +0000 |
User-agent: |
Alpine 2.00 (DEB 1167 2008-08-23) |
On Tue, 15 Nov 2011, Ian Campbell wrote:
> > + xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_BUFIOREQ_EVTCHN,
> > + &bufioreq_evtchn);
> > + rc = xc_evtchn_bind_interdomain(state->xce_handle, xen_domid,
> > + (uint32_t)bufioreq_evtchn);
> > + if (rc == -1) {
> > + fprintf(stderr, "bind interdomain ioctl error %d\n", errno);
> > + return -1;
> > + }
> > + state->bufioreq_local_port = rc;
>
> Does this fallback gracefully on hypervisors which don't have this new
> hvm param? It doesn't look like it but perhaps I'm missing something.
No, it does not.
However upstream Qemu doesn't work very well with Xen 4.1 anyway, the
first Xen release that is going to support it will be Xen 4.2 that
should have this feature.
- Re: [Qemu-devel] [PATCH 1/4] xen: introduce mc146818rtcxen, (continued)
- Re: [Qemu-devel] [PATCH 1/4] xen: introduce mc146818rtcxen, Stefano Stabellini, 2011/11/18
- Re: [Qemu-devel] [PATCH 1/4] xen: introduce mc146818rtcxen, Anthony Liguori, 2011/11/18
- Re: [Qemu-devel] [PATCH 1/4] xen: introduce mc146818rtcxen, Anthony Liguori, 2011/11/18
- Re: [Qemu-devel] [PATCH 1/4] xen: introduce mc146818rtcxen, Avi Kivity, 2011/11/20
- Re: [Qemu-devel] [PATCH 1/4] xen: introduce mc146818rtcxen, Anthony Liguori, 2011/11/21
- Re: [Qemu-devel] [PATCH 1/4] xen: introduce mc146818rtcxen, Stefano Stabellini, 2011/11/21
- Re: [Qemu-devel] [PATCH 1/4] xen: introduce mc146818rtcxen, Paolo Bonzini, 2011/11/21
[Qemu-devel] [PATCH 4/4] qemu_calculate_timeout: increase minimum timeout to 1h, stefano.stabellini, 2011/11/15
[Qemu-devel] [PATCH 3/4] xen: introduce an event channel for buffered io event notifications, stefano.stabellini, 2011/11/15