WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

[Xen-devel] Current HVM acpi support is broken

To: "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>, <Keir.Fraser@xxxxxxxxxxxx>, <Christian.Limpach@xxxxxxxxxxxx>
Subject: [Xen-devel] Current HVM acpi support is broken
From: "Wang, Winston L" <winston.l.wang@xxxxxxxxx>
Date: Tue, 8 Aug 2006 10:46:54 -0700
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, Tang Liang <tangliang@xxxxxxxxxx>
Delivery-date: Tue, 08 Aug 2006 10:47:31 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: AcZJ+X/aibN5jDuIR5qaQWxIPo6lRgAAB3DgGcLc9lABXN7R8AD6IxmgAAZ8ITAAJU+xIA==
Thread-topic: Current HVM acpi support is broken
Hi Christian, Ian and Kair,

I think current hvm acpi support is broken. 
We noticed qemu to 0.82 with acpi support is introduced on changset
10957, it is conflict with xen hvm acpi code, in ../ioemu/hw/cp.c start
from ln 860: 

    cmos_init(ram_size, boot_device, bs_table, timeoffset);

    /* using PIIX4 acpi model */
    if (pci_enabled && acpi_enabled)
        pci_piix4_acpi_init(pci_bus, piix3_devfn + 3);

    if (pci_enabled && usb_enabled) {
        usb_uhci_init(pci_bus, piix3_devfn + 2);
    }

    if (pci_enabled && acpi_enabled && 0) {
        piix4_pm_init(pci_bus, piix3_devfn + 3);
    }
...
    /* XXX: should be done in the Bochs BIOS */
    if (pci_enabled) {
        pci_bios_init();
        if (acpi_enabled)
            acpi_bios_init();
    }
}

The above code generate two acpi tables and acpi pci piix func3 device
when acpi=1 in hvm guest platform.

Two sets of acpi can not co-exist:) What acpi set do we need to keep?
What is the advatage for that?

We are cureent have to use changset 10955 puls acpi_init_fix.patch for
acpi related development.

Regards,

Winston,

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel

<Prev in Thread] Current Thread [Next in Thread>