[Qemu-stable] [PATCH 77/79] hw/i386: allow SHPC for Q35 machine

[Michael Roth]

From: Aleksandr Bezzubikov <address@hidden>

Unmask previously masked SHPC feature in _OSC method.

Signed-off-by: Aleksandr Bezzubikov <address@hidden>
Reviewed-by: Marcel Apfelbaum <address@hidden>
Reviewed-by: Michael S. Tsirkin <address@hidden>
Signed-off-by: Michael S. Tsirkin <address@hidden>
(cherry picked from commit a41c78c135eb1850826e96b2154690323ff66719)
Signed-off-by: Michael Roth <address@hidden>
---
 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 2073108..76fa455 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -1818,9 +1818,9 @@ 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 */
-- 
2.7.4