From: Don Dutile <ddutile@redhat.com>
To: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: "stefano@stabellini.net" <stefano@stabellini.net>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
"sheng@linux.intel.com" <sheng@linux.intel.com>,
"jeremy@goop.org" <jeremy@goop.org>
Subject: Re: [PATCH 12/13] Unplug emulated disks and nics
Date: Wed, 07 Jul 2010 16:01:31 -0400 [thread overview]
Message-ID: <4C34DD1B.3010601@redhat.com> (raw)
In-Reply-To: <alpine.DEB.2.00.1007051255310.29110@kaball-desktop>
Stefano Stabellini wrote:
> On Thu, 1 Jul 2010, Don Dutile wrote:
>> The problem with this check/enable is that if you run
>> this on an older qemu-xen that doesn't have unplug support,
>> it fails pv-hvm configuration.
>>
>> But, all that means is that you can't use an xvd as the boot device,
>> and you have to use an emulated IDE device as boot device.
>> There are a couple ways to configure the vnif correctly (in guest
>> or in xen guest config file).
>>
>> So, on an older (say, rhel5) xen, I don't have this check;
>> the boot device is required to be spec'd as hda, not vda, and
>> xen-blkfront is not allowed to configure blk major nums
>> for IDE (& SCSI) (to avoid 2 drivers twiddling w/same phys backend... not good!).
>>
>
> Who is requiring that the boot device is spec'd as hda and not xvda?
> I don't think there is such limitation in xend or libxl at the moment.
>
If you take a previous xen HVM guest spec & just run it on a guest
that has pv-hvm added to it, then one has hda spec'd as boot device (by default,
by not editing the guest config spec/file).
Ideally, both config specs should/would work.
- Don
next prev parent reply other threads:[~2010-07-07 20:02 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-21 16:12 [PATCH 0/12] PV on HVM Xen Stefano Stabellini
2010-06-21 16:13 ` [PATCH 01/13] Add support for hvm_op stefano
2010-06-21 16:13 ` [PATCH 02/13] early PV on HVM stefano
2010-06-21 16:13 ` [PATCH 03/13] evtchn delivery " stefano
2010-06-21 16:13 ` [PATCH 04/13] Xen PCI platform device driver stefano
2010-06-30 17:55 ` Konrad Rzeszutek Wilk
2010-07-01 11:38 ` Stefano Stabellini
2010-06-21 16:13 ` [PATCH 05/13] Add suspend\resume support for PV on HVM guests stefano
2010-06-21 16:14 ` [PATCH 06/13] Allow xen platform pci device to be compiled as a module stefano
2010-06-21 16:14 ` [PATCH 07/13] Fix find_unbound_irq in presence of ioapic irqs stefano
2010-06-21 16:14 ` [PATCH 0/12] PV on HVM Xen Stefano Stabellini
2010-06-21 16:14 ` [PATCH 08/13] Fix possible NULL pointer dereference in print_IO_APIC stefano
2010-06-21 16:14 ` [PATCH 09/13] __setup_vector_irq: handle NULL chip_data stefano
2010-06-21 16:14 ` [PATCH 10/13] Do not try to disable hpet if it hasn't been initialized before stefano
2010-06-30 17:53 ` Konrad Rzeszutek Wilk
2010-07-09 1:05 ` john stultz
2010-06-30 21:24 ` Venkatesh Pallipadi
2010-07-02 10:44 ` Paolo Bonzini
2010-06-21 16:14 ` [PATCH 11/13] Use xen_vcpuop_clockevent, xen_clocksource and xen wallclock stefano
2010-07-01 19:41 ` Don Dutile
2010-07-02 17:17 ` Stefano Stabellini
2010-06-21 16:14 ` [PATCH 12/13] Unplug emulated disks and nics stefano
2010-07-01 19:41 ` Don Dutile
2010-07-05 11:58 ` Stefano Stabellini
2010-07-07 20:01 ` Don Dutile [this message]
2010-07-08 13:13 ` Stefano Stabellini
2010-07-08 19:57 ` [Xen-devel] " Don Dutile
2010-07-08 21:29 ` Ian Campbell
2010-07-08 21:59 ` Don Dutile
2010-07-09 8:02 ` Ian Campbell
2010-07-09 10:54 ` Stefano Stabellini
2010-07-09 13:42 ` Don Dutile
2010-06-21 16:14 ` [PATCH 13/13] Call HVMOP_pagetable_dying on exit_mmap stefano
2010-06-30 17:56 ` [PATCH 0/12] PV on HVM Xen Konrad Rzeszutek Wilk
2010-07-01 11:38 ` Stefano Stabellini
2010-07-01 19:43 ` [Xen-devel] " Dan Magenheimer
2010-07-02 10:43 ` Stefano Stabellini
2010-07-02 16:08 ` Dan Magenheimer
2010-07-02 17:14 ` Stefano Stabellini
2010-07-02 19:49 ` Dan Magenheimer
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