Ben Guthro
2013-Jul-01 11:48 UTC
[PATCH v6 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@suse.com> Signed-off-by: Ben Guthro <benjamin.guthro@citrix.com> Cc: tboot-devel@lists.sourceforge.net Cc: Gang Wei <gang.wei@intel.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> --- arch/x86/kernel/tboot.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/x86/kernel/tboot.c b/arch/x86/kernel/tboot.c index d578c9c..76c284f 100644 --- a/arch/x86/kernel/tboot.c +++ b/arch/x86/kernel/tboot.c @@ -285,6 +285,12 @@ static int tboot_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control, if (!tboot_enabled()) return 0; + if (extended) + if (WARN(extended,"tboot is not able to suspend on platforms with" + " reduced hardware sleep (ACPIv5). Please contact" + " tboot-devel@lists.sourceforge.net mailing list.")) + return -1; + tboot_copy_fadt(&acpi_gbl_FADT); tboot->acpi_sinfo.pm1a_cnt_val = pm1a_control; tboot->acpi_sinfo.pm1b_cnt_val = pm1b_control; -- 1.7.9.5