Re: [Qemu-devel] [PATCH v2 3/6] ACPI: Add Virtual Machine Generation ID support

2017-01-17 Thread Ben Warren
Hi Igor, > On Jan 17, 2017, at 5:00 AM, Igor Mammedov wrote: > > On Mon, 16 Jan 2017 11:20:55 -0800 > b...@skyportsystems.com wrote: > >> From: Ben Warren >> >> This implements the VM Generation ID feature by passing a 128-bit >> GUID to the guest via a fw_cfg blob. >> Any time the GUID change

Re: [Qemu-devel] [PATCH v2 3/6] ACPI: Add Virtual Machine Generation ID support

2017-01-17 Thread Laszlo Ersek
On 01/17/17 15:41, Michael S. Tsirkin wrote: > On Tue, Jan 17, 2017 at 02:00:58PM +0100, Igor Mammedov wrote: >> Question is how you'd get address of it and I think that's where >> writable fwcfg files come in play. >> I'd prefer fwcfg_loader in firmware to write it back after buffer >> allocation

Re: [Qemu-devel] [PATCH v2 3/6] ACPI: Add Virtual Machine Generation ID support

2017-01-17 Thread Michael S. Tsirkin
On Tue, Jan 17, 2017 at 02:00:58PM +0100, Igor Mammedov wrote: > Question is how you'd get address of it and I think that's where > writable fwcfg files come in play. > I'd prefer fwcfg_loader in firmware to write it back after buffer > allocation is done as it's already has utilities for fw_cfg, >

Re: [Qemu-devel] [PATCH v2 3/6] ACPI: Add Virtual Machine Generation ID support

2017-01-17 Thread Laszlo Ersek
On 01/17/17 14:00, Igor Mammedov wrote: > On Mon, 16 Jan 2017 11:20:55 -0800 > b...@skyportsystems.com wrote: > >> From: Ben Warren >> >> This implements the VM Generation ID feature by passing a 128-bit >> GUID to the guest via a fw_cfg blob. >> Any time the GUID changes, and ACPI notify event i

Re: [Qemu-devel] [PATCH v2 3/6] ACPI: Add Virtual Machine Generation ID support

2017-01-17 Thread Igor Mammedov
On Mon, 16 Jan 2017 11:20:55 -0800 b...@skyportsystems.com wrote: > From: Ben Warren > > This implements the VM Generation ID feature by passing a 128-bit > GUID to the guest via a fw_cfg blob. > Any time the GUID changes, and ACPI notify event is sent to the guest > > The user interface is a s

[Qemu-devel] [PATCH v2 3/6] ACPI: Add Virtual Machine Generation ID support

2017-01-16 Thread ben
From: Ben Warren This implements the VM Generation ID feature by passing a 128-bit GUID to the guest via a fw_cfg blob. Any time the GUID changes, and ACPI notify event is sent to the guest The user interface is a simple device with one parameters: - guid (string, must be in UUID format