From: Paul Brook <paul@codesourcery.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: qemu-devel@nongnu.org, "Kevin O'Connor" <kevin@koconnor.net>,
Kevin Wolf <kwolf@redhat.com>,
kvm@vger.kernel.org, seabios@seabios.org,
Isaku Yamahata <yamahata@valinux.co.jp>,
Avi Kivity <avi@redhat.com>
Subject: Re: [Qemu-devel] [PATCH RFC] seabios: add OSHP method stub
Date: Tue, 14 Feb 2012 13:47:59 +0000 [thread overview]
Message-ID: <201202141348.00060.paul@codesourcery.com> (raw)
In-Reply-To: <20120214133727.GA23647@redhat.com>
> > > Now an OS can have a standard driver and use it
> > > to activate hotplug functionality. This is OS hotplug (OSHP).
> >
> > So presumably this will work on targets that don't have ACPI?
> > Assuming a competent guest OS of course. Have you tested this?
>
> This being the qemu side of things? I run Linux
> and verified that it calls OSHP and afterwards,
> runs the native driver and handles hotplug/unplug
> without invoking ACPI at all.
I mean using your shiny new hotplug PCI-PCI bridge on arm/ppc/mips targets
(i.e anything other than x86 PC). From your description it sounds like it
*should* work.
> It seems that at least the SHPC driver in linux
> doesn't work if you don't have an acpi table
> with the OSHP method - not many people run with acpi=off
> nowdays, so it's probably just a bug.
> I'll check how hard it is to fix this.
Targets other than x86 don't have ACPI to start with.
Paul
WARNING: multiple messages have this Message-ID (diff)
From: Paul Brook <paul@codesourcery.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Kevin Wolf <kwolf@redhat.com>,
kvm@vger.kernel.org, seabios@seabios.org, qemu-devel@nongnu.org,
Isaku Yamahata <yamahata@valinux.co.jp>,
Kevin O'Connor <kevin@koconnor.net>, Avi Kivity <avi@redhat.com>
Subject: Re: [Qemu-devel] [PATCH RFC] seabios: add OSHP method stub
Date: Tue, 14 Feb 2012 13:47:59 +0000 [thread overview]
Message-ID: <201202141348.00060.paul@codesourcery.com> (raw)
In-Reply-To: <20120214133727.GA23647@redhat.com>
> > > Now an OS can have a standard driver and use it
> > > to activate hotplug functionality. This is OS hotplug (OSHP).
> >
> > So presumably this will work on targets that don't have ACPI?
> > Assuming a competent guest OS of course. Have you tested this?
>
> This being the qemu side of things? I run Linux
> and verified that it calls OSHP and afterwards,
> runs the native driver and handles hotplug/unplug
> without invoking ACPI at all.
I mean using your shiny new hotplug PCI-PCI bridge on arm/ppc/mips targets
(i.e anything other than x86 PC). From your description it sounds like it
*should* work.
> It seems that at least the SHPC driver in linux
> doesn't work if you don't have an acpi table
> with the OSHP method - not many people run with acpi=off
> nowdays, so it's probably just a bug.
> I'll check how hard it is to fix this.
Targets other than x86 don't have ACPI to start with.
Paul
next prev parent reply other threads:[~2012-02-14 13:48 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-13 9:15 [PATCHv2-RFC 0/2] RFC: standard pci bridge device Michael S. Tsirkin
2012-02-13 9:15 ` [Qemu-devel] " Michael S. Tsirkin
2012-02-13 9:15 ` [PATCHv2-RFC 1/2] shpc: standard hot plug controller Michael S. Tsirkin
2012-02-13 9:15 ` [Qemu-devel] " Michael S. Tsirkin
2012-02-13 10:03 ` Isaku Yamahata
2012-02-13 10:03 ` [Qemu-devel] " Isaku Yamahata
2012-02-13 11:49 ` Michael S. Tsirkin
2012-02-13 11:49 ` [Qemu-devel] " Michael S. Tsirkin
2012-02-13 14:30 ` Isaku Yamahata
2012-02-13 14:30 ` [Qemu-devel] " Isaku Yamahata
2012-02-13 14:49 ` Michael S. Tsirkin
2012-02-13 14:49 ` [Qemu-devel] " Michael S. Tsirkin
2012-02-17 13:20 ` Gerd Hoffmann
2012-02-17 13:20 ` [Qemu-devel] " Gerd Hoffmann
2012-02-13 9:16 ` [PATCHv2-RFC 2/2] pci: add standard bridge device Michael S. Tsirkin
2012-02-13 9:16 ` [Qemu-devel] " Michael S. Tsirkin
2012-02-17 13:25 ` Gerd Hoffmann
2012-02-17 13:25 ` [Qemu-devel] " Gerd Hoffmann
2012-02-19 14:57 ` Michael S. Tsirkin
2012-02-19 14:57 ` [Qemu-devel] " Michael S. Tsirkin
2012-02-19 23:44 ` Michael S. Tsirkin
2012-02-19 23:44 ` Michael S. Tsirkin
2012-02-17 13:33 ` Gerd Hoffmann
2012-02-17 13:33 ` [Qemu-devel] " Gerd Hoffmann
2012-02-20 22:40 ` Michael S. Tsirkin
2012-02-20 22:40 ` Michael S. Tsirkin
2012-02-21 8:02 ` Gerd Hoffmann
2012-02-21 8:02 ` [Qemu-devel] " Gerd Hoffmann
2012-02-13 9:33 ` [PATCH RFC] seabios: add OSHP method stub Michael S. Tsirkin
2012-02-13 9:33 ` [Qemu-devel] " Michael S. Tsirkin
2012-02-14 0:34 ` Kevin O'Connor
2012-02-14 0:34 ` [Qemu-devel] " Kevin O'Connor
2012-02-14 0:43 ` Michael S. Tsirkin
2012-02-14 0:43 ` [Qemu-devel] " Michael S. Tsirkin
2012-02-14 0:48 ` Kevin O'Connor
2012-02-14 0:48 ` [Qemu-devel] " Kevin O'Connor
2012-02-14 1:09 ` Michael S. Tsirkin
2012-02-14 1:09 ` [Qemu-devel] " Michael S. Tsirkin
2012-02-14 12:49 ` Paul Brook
2012-02-14 12:49 ` [Qemu-devel] " Paul Brook
2012-02-14 13:37 ` Michael S. Tsirkin
2012-02-14 13:37 ` [Qemu-devel] " Michael S. Tsirkin
2012-02-14 13:47 ` Paul Brook [this message]
2012-02-14 13:47 ` Paul Brook
2012-02-14 14:11 ` Michael S. Tsirkin
2012-02-14 14:11 ` Michael S. Tsirkin
2012-02-29 11:25 ` [SeaBIOS] " Gerd Hoffmann
2012-02-29 11:25 ` [Qemu-devel] " Gerd Hoffmann
2012-02-13 9:38 ` [PATCHv2-RFC 0/2] RFC: standard pci bridge device Wen Congyang
2012-02-13 9:38 ` [Qemu-devel] " Wen Congyang
2012-02-13 9:56 ` Michael S. Tsirkin
2012-02-13 9:56 ` [Qemu-devel] " Michael S. Tsirkin
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