From: Aleksandr Bezzubikov <zuban32s@gmail.com>

Unmask previously masked SHPC feature in _OSC method.

Signed-off-by: Aleksandr Bezzubikov <zuban32s@gmail.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 hw/i386/acpi-build.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index b9c245c..98dd424 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -1862,9 +1862,9 @@ static Aml *build_q35_osc_method(void)
 
     /*
      * Always allow native PME, AER (no dependencies)
-     * Never allow SHPC (no SHPC controller in this system)
+     * Allow SHPC (PCI bridges can have SHPC controller)
      */
-    aml_append(if_ctx, aml_and(a_ctrl, aml_int(0x1D), a_ctrl));
+    aml_append(if_ctx, aml_and(a_ctrl, aml_int(0x1F), a_ctrl));
 
     if_ctx2 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(1))));
     /* Unknown revision */
-- 
MST

On Tue, Aug 08, 2017 at 12:40:08AM +0300, Michael S. Tsirkin wrote:
> From: Aleksandr Bezzubikov <zuban32s@gmail.com>
> 
> Unmask previously masked SHPC feature in _OSC method.
> 
> Signed-off-by: Aleksandr Bezzubikov <zuban32s@gmail.com>
> Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

Cc: qemu-stable@nongnu.org

> ---
>  hw/i386/acpi-build.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
> index b9c245c..98dd424 100644
> --- a/hw/i386/acpi-build.c
> +++ b/hw/i386/acpi-build.c
> @@ -1862,9 +1862,9 @@ static Aml *build_q35_osc_method(void)
>  
>      /*
>       * Always allow native PME, AER (no dependencies)
> -     * Never allow SHPC (no SHPC controller in this system)
> +     * Allow SHPC (PCI bridges can have SHPC controller)
>       */
> -    aml_append(if_ctx, aml_and(a_ctrl, aml_int(0x1D), a_ctrl));
> +    aml_append(if_ctx, aml_and(a_ctrl, aml_int(0x1F), a_ctrl));
>  
>      if_ctx2 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(1))));
>      /* Unknown revision */
> -- 
> MST