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[Xen-devel] [PATCH v5 4/5] x86/tboot: Fail extended mode reduced hardware sleep

As tboot currently does not support the reduced hardware sleep
interface, fail this extended call.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Signed-off-by: Ben Guthro <benjamin.guthro@xxxxxxxxxx>
Cc: tboot-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: Gang Wei <gang.wei@xxxxxxxxx>
 arch/x86/kernel/tboot.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/x86/kernel/tboot.c b/arch/x86/kernel/tboot.c
index d578c9c..57383b2 100644
--- a/arch/x86/kernel/tboot.c
+++ b/arch/x86/kernel/tboot.c
@@ -285,6 +285,9 @@ static int tboot_sleep(u8 sleep_state, u32 pm1a_control, 
u32 pm1b_control,
        if (!tboot_enabled())
                return 0;
+       if (extended)
+               return -1;
        tboot->acpi_sinfo.pm1a_cnt_val = pm1a_control;
        tboot->acpi_sinfo.pm1b_cnt_val = pm1b_control;

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