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These patch update Windows generation ID support on ACPI. First patch mainly update to new specifications while second one introduce again the device in ACPI table. Frediano Ziglio (2): genid: Update Windows generation ID genid: Introduce again Windows generation ID device docs/misc/xenstore-paths.markdown | 6 ++++ tools/firmware/hvmloader/acpi/build.c | 49

This patch series adds the ability to selectively disable the S3 and S4 ACPI power states for HVM guests. Since there is a general move towards retiring the hvm_info_table structure, the first patch moves the acpi_enabled flag out of the hvm_info_table and into a xenstore key (platform/acpi). The second patch then introduces the acpi_s3 and acpi_s4 configuration parameters to the xl config file

...ion. > The patch works well with upstream qemu and doesn''t affect the system with > traditional qemu. > > > > > > > > --- a/tools/firmware/hvmloader/ovmf.c > > > +++ b/tools/firmware/hvmloader/ovmf.c > > > @@ -79,7 +79,11 @@ static void ovmf_acpi_build_tables(void) > > > .dsdt_anycpu = dsdt_anycpu, > > > .dsdt_anycpu_len = dsdt_anycpu_len, > > > .dsdt_15cpu = NULL, > > > - .dsdt_15cpu_len = 0 > > > + .dsdt_15cpu_len = 0, > > > + .aml_ej0_name = NUL...

The following is a revised patch series to add support for a VM generation ID virtual device for HVM guests. The basic requirements of this device are as follows: - It must be exposed somewhere in ACPI namespace with a _CID of "VM_Gen_Counter". - It must also include a _DDN of "VM_Gen_Counter". - It must contain a _HID object but no particular value is required. - It must