Re: [Qemu-devel] [RFC PATCH 2/3] acpi: pc: add fw_cfg device node to ssdt

2015-09-14 Thread Eduardo Habkost
On Sat, Sep 12, 2015 at 07:30:41PM -0400, Gabriel L. Somlo wrote: > Add a fw_cfg device node to the ACPI SSDT. While the guest-side > BIOS can't utilize this information (since it has to access the > hard-coded fw_cfg device to extract ACPI tables to begin with), > having fw_cfg listed in ACPI will

Re: [Qemu-devel] [RFC PATCH 2/3] acpi: pc: add fw_cfg device node to ssdt

2015-09-13 Thread Gabriel L. Somlo
On Sun, Sep 13, 2015 at 02:45:23PM +0300, Michael S. Tsirkin wrote: > On Sat, Sep 12, 2015 at 07:30:41PM -0400, Gabriel L. Somlo wrote: > > Add a fw_cfg device node to the ACPI SSDT. While the guest-side > > BIOS can't utilize this information (since it has to access the > > hard-coded fw_cfg devic

Re: [Qemu-devel] [RFC PATCH 2/3] acpi: pc: add fw_cfg device node to ssdt

2015-09-13 Thread Michael S. Tsirkin
On Sat, Sep 12, 2015 at 07:30:41PM -0400, Gabriel L. Somlo wrote: > Add a fw_cfg device node to the ACPI SSDT. While the guest-side > BIOS can't utilize this information (since it has to access the > hard-coded fw_cfg device to extract ACPI tables to begin with), > having fw_cfg listed in ACPI will

[Qemu-devel] [RFC PATCH 2/3] acpi: pc: add fw_cfg device node to ssdt

2015-09-12 Thread Gabriel L. Somlo
Add a fw_cfg device node to the ACPI SSDT. While the guest-side BIOS can't utilize this information (since it has to access the hard-coded fw_cfg device to extract ACPI tables to begin with), having fw_cfg listed in ACPI will help the guest kernel keep a more accurate inventory of in-use IO port re