From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Guthro Subject: [PATCH v7 2/3] x86/tboot: Fail extended mode reduced hardware sleep Date: Mon, 29 Jul 2013 13:14:14 -0400 Message-ID: <1375118055-15942-3-git-send-email-benjamin.guthro@citrix.com> References: <1375118055-15942-1-git-send-email-benjamin.guthro@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1375118055-15942-1-git-send-email-benjamin.guthro@citrix.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: tboot-devel-bounces@lists.sourceforge.net To: Konrad Rzeszutek Wilk , Jan Beulich , "Rafael J . Wysocki" , linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, xen-devel@lists.xen.org Cc: tboot-devel@lists.sourceforge.net, Ben Guthro List-Id: linux-acpi@vger.kernel.org Register for the extended sleep callback from acpi. As tboot currently does not support the reduced hardware sleep interface, fail this extended call. Signed-off-by: Jan Beulich Signed-off-by: Ben Guthro Cc: tboot-devel@lists.sourceforge.net Cc: Gang Wei Reviewed-by: Konrad Rzeszutek Wilk --- arch/x86/kernel/tboot.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/x86/kernel/tboot.c b/arch/x86/kernel/tboot.c index addf7b5..760f431 100644 --- a/arch/x86/kernel/tboot.c +++ b/arch/x86/kernel/tboot.c @@ -301,6 +301,17 @@ static int tboot_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control) return 0; } +static int tboot_extended_sleep(u8 sleep_state, u32 val_a, u32 val_b) +{ + if (!tboot_enabled()) + return 0; + + pr_warning("tboot is not able to suspend on platforms with" + " reduced hardware sleep (ACPIv5). Please contact" + " tboot-devel@lists.sourceforge.net mailing list."); + return -1; +} + static atomic_t ap_wfs_count; static int tboot_wait_for_aps(int num_aps) @@ -422,6 +433,7 @@ static __init int tboot_late_init(void) #endif acpi_os_set_prepare_sleep(&tboot_sleep); + acpi_os_set_prepare_extended_sleep(&tboot_extended_sleep); return 0; } -- 1.7.9.5 ------------------------------------------------------------------------------ Get your SQL database under version control now! Version control is standard for application code, but databases havent caught up. So what steps can you take to put your SQL databases under version control? Why should you start doing it? Read more to find out. http://pubads.g.doubleclick.net/gampad/clk?id=49501711&iu=/4140/ostg.clktrk