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[Xen-devel] [PATCH 10/10] Enable ACPI sleep in XenLinux


  • To: "Keir Fraser" <keir@xxxxxxxxxxxxx>
  • From: "Tian, Kevin" <kevin.tian@xxxxxxxxx>
  • Date: Wed, 27 Jun 2007 21:38:08 +0800
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Wed, 27 Jun 2007 06:38:45 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: Ace4wGVRYpDgGir/T+Obgh7SwMUYSA==
  • Thread-topic: [PATCH 10/10] Enable ACPI sleep in XenLinux

Open CONFIG_ACPI_SLEEP in xenlinux, to enable ACPI based
power management. Basically, user can trigger power event
now by "echo *** > /sys/power/state". Also gear to pm
interface defined between xenlinux and Xen.

Also sync to xen interface headers consequently

Signed-off-by Ke Yu <ke.yu@xxxxxxxxx>
Signed-off-by Kevin Tian <kevin.tian@xxxxxxxxx>

diff -r 713e909c27d2 arch/i386/Kconfig
--- a/arch/i386/Kconfig Tue Jun 26 20:41:35 2007 -0400
+++ b/arch/i386/Kconfig Tue Jun 26 20:42:22 2007 -0400
@@ -832,9 +832,7 @@ menu "Power management options (ACPI, AP
 menu "Power management options (ACPI, APM)"
        depends on !(X86_VOYAGER || XEN_UNPRIVILEGED_GUEST)
 
-if !X86_XEN
-source kernel/power/Kconfig
-endif
+source "kernel/power/Kconfig"
 
 source "drivers/acpi/Kconfig"
 
diff -r 713e909c27d2 arch/i386/kernel/acpi/sleep-xen.c
--- a/arch/i386/kernel/acpi/sleep-xen.c Tue Jun 26 20:41:35 2007 -0400
+++ b/arch/i386/kernel/acpi/sleep-xen.c Tue Jun 26 20:42:22 2007 -0400
@@ -27,12 +27,13 @@ extern unsigned long FASTCALL(acpi_copy_
  */
 int acpi_save_state_mem(void)
 {
+#ifndef CONFIG_ACPI_PV_SLEEP
        if (!acpi_wakeup_address)
                return 1;
        memcpy((void *)acpi_wakeup_address, &wakeup_start,
               &wakeup_end - &wakeup_start);
        acpi_copy_wakeup_routine(acpi_wakeup_address);
-
+#endif
        return 0;
 }
 
@@ -104,3 +105,66 @@ static int __init acpisleep_dmi_init(voi
 }
 
 core_initcall(acpisleep_dmi_init);
+
+#ifdef CONFIG_ACPI_PV_SLEEP
+#include <asm/hypervisor.h>
+#include <xen/interface/platform.h>
+/* Register sleep info to xen hypervisor which does real work later */
+int acpi_register_sleep_info(void)
+{
+       struct xen_platform_op op;
+       int ret;
+
+       if (acpi_gbl_FADT == NULL) {
+               printk(KERN_WARNING "%s: ACPI FADT not existed\n",
+                               __FUNCTION__);
+               return -1;
+       }
+
+       op.cmd = XENPF_set_acpi_sleep;
+       op.interface_version = XENPF_INTERFACE_VERSION;
+       op.u.set_acpi_sleep.pm1a_cnt_port =
+               (u16)acpi_gbl_FADT->xpm1a_cnt_blk.address;
+       op.u.set_acpi_sleep.pm1b_cnt_port =
+               (u16)acpi_gbl_FADT->xpm1b_cnt_blk.address;
+       op.u.set_acpi_sleep.pm1a_evt_port =
+               (u16)acpi_gbl_FADT->xpm1a_evt_blk.address;
+       op.u.set_acpi_sleep.pm1b_evt_port =
+               (u16)acpi_gbl_FADT->xpm1b_evt_blk.address;
+
+       ret  = HYPERVISOR_platform_op(&op);
+
+       if (ret){
+               printk(KERN_WARNING "%s: Fail to register acpi sleep
info,"
+                               "Xen sleep will not work\n",
__FUNCTION__);
+               return (ret);
+       }
+
+       acpi_wakeup_address = (unsigned long)
+               op.u.set_acpi_sleep.xen_waking_vec;
+       return ret;
+}
+
+extern unsigned long acpi_video_flags;
+extern unsigned long saved_videomode;
+int acpi_notify_hypervisor_state(u8 sleep_state,
+       u32 pm1a_cnt, u32 pm1b_cnt)
+{
+       struct xen_platform_op op = {
+               .cmd = XENPF_enter_acpi_sleep,
+               .interface_version = XENPF_INTERFACE_VERSION,
+               .u = {
+                       .enter_acpi_sleep = {
+                               .pm1a_cnt_val = (u16)pm1a_cnt,
+                               .pm1b_cnt_val = (u16)pm1b_cnt,
+                               .sleep_state = sleep_state,
+                       },
+               },
+       };
+
+       op.u.enter_acpi_sleep.video_flags = acpi_video_flags;
+       op.u.enter_acpi_sleep.video_mode = saved_videomode;
+
+       return HYPERVISOR_platform_op(&op);
+}
+#endif /* CONFIG_ACPI_PV_SLEEP */
diff -r 713e909c27d2 arch/i386/kernel/time-xen.c
--- a/arch/i386/kernel/time-xen.c       Tue Jun 26 20:41:35 2007 -0400
+++ b/arch/i386/kernel/time-xen.c       Tue Jun 26 20:42:22 2007 -0400
@@ -861,9 +861,9 @@ static int timer_resume(struct sys_devic
        return 0;
 }
 
+void time_resume(void);
 static struct sysdev_class timer_sysclass = {
-       .resume = timer_resume,
-       .suspend = timer_suspend,
+       .resume = time_resume,
        set_kset_name("timer"),
 };
 
diff -r 713e909c27d2 arch/i386/power/cpu.c
--- a/arch/i386/power/cpu.c     Tue Jun 26 20:41:35 2007 -0400
+++ b/arch/i386/power/cpu.c     Tue Jun 26 20:42:22 2007 -0400
@@ -62,11 +62,12 @@ static void do_fpu_end(void)
 
 static void fix_processor_context(void)
 {
+#ifndef CONFIG_X86_NO_TSS
        int cpu = smp_processor_id();
        struct tss_struct * t = &per_cpu(init_tss, cpu);
 
        set_tss_desc(cpu,t);    /* This just modifies memory; should not
be necessary. But... This is necessary, because 386 hardware has concept
of busy TSS or some similar stupidity. */
-
+#endif
        load_TR_desc();                         /* This does ltr */
        load_LDT(&current->active_mm->context); /* This does lldt */
 
diff -r 713e909c27d2 arch/x86_64/Kconfig
--- a/arch/x86_64/Kconfig       Tue Jun 26 20:41:35 2007 -0400
+++ b/arch/x86_64/Kconfig       Tue Jun 26 20:42:22 2007 -0400
@@ -594,9 +594,7 @@ menu "Power management options"
 menu "Power management options"
        depends on !XEN_UNPRIVILEGED_GUEST
 
-if !X86_64_XEN
-source kernel/power/Kconfig
-endif
+source "kernel/power/Kconfig"
 
 source "drivers/acpi/Kconfig"
 
diff -r 713e909c27d2 arch/x86_64/kernel/acpi/Makefile
--- a/arch/x86_64/kernel/acpi/Makefile  Tue Jun 26 20:41:35 2007 -0400
+++ b/arch/x86_64/kernel/acpi/Makefile  Tue Jun 26 20:42:22 2007 -0400
@@ -8,3 +8,7 @@ endif
 endif
 
 boot-$(CONFIG_XEN)             := ../../../i386/kernel/acpi/boot-xen.o
+ifdef CONFIG_XEN
+include $(srctree)/scripts/Makefile.xen
+obj-y := $(call cherrypickxen, $(obj-y))
+endif
diff -r 713e909c27d2 arch/x86_64/kernel/acpi/sleep-xen.c
--- a/arch/x86_64/kernel/acpi/sleep-xen.c       Tue Jun 26 20:41:35 2007
-0400
+++ b/arch/x86_64/kernel/acpi/sleep-xen.c       Tue Jun 26 20:42:22 2007
-0400
@@ -79,12 +79,13 @@ static void init_low_mapping(void)
  */
 int acpi_save_state_mem(void)
 {
+#ifndef CONFIG_ACPI_PV_SLEEP
        init_low_mapping();
 
        memcpy((void *)acpi_wakeup_address, &wakeup_start,
               &wakeup_end - &wakeup_start);
        acpi_copy_wakeup_routine(acpi_wakeup_address);
-
+#endif
        return 0;
 }
 
@@ -93,8 +94,10 @@ int acpi_save_state_mem(void)
  */
 void acpi_restore_state_mem(void)
 {
+#ifndef CONFIG_ACPI_PV_SLEEP
        set_pgd(pgd_offset(current->mm, 0UL), low_ptr);
        local_flush_tlb();
+#endif
 }
 
 /**
@@ -124,11 +127,74 @@ static int __init acpi_sleep_setup(char 
                if (str != NULL)
                        str += strspn(str, ", \t");
        }
+
        return 1;
 }
 
 __setup("acpi_sleep=", acpi_sleep_setup);
 
+#ifdef CONFIG_ACPI_PV_SLEEP
+#include <asm/hypervisor.h>
+#include <xen/interface/platform.h>
+/* Register sleep info to xen hypervisor which does real work later */
+int acpi_register_sleep_info(void)
+{
+       struct xen_platform_op op;
+       int ret;
+
+       if (acpi_gbl_FADT == NULL) {
+               printk(KERN_WARNING "%s: ACPI FADT not existed\n",
+                               __FUNCTION__);
+               return -1;
+       }
+
+       op.cmd = XENPF_set_acpi_sleep;
+       op.interface_version = XENPF_INTERFACE_VERSION;
+       op.u.set_acpi_sleep.pm1a_cnt_port =
+               (u16)acpi_gbl_FADT->xpm1a_cnt_blk.address;
+       op.u.set_acpi_sleep.pm1b_cnt_port =
+               (u16)acpi_gbl_FADT->xpm1b_cnt_blk.address;
+       op.u.set_acpi_sleep.pm1a_evt_port =
+               (u16)acpi_gbl_FADT->xpm1a_evt_blk.address;
+       op.u.set_acpi_sleep.pm1b_evt_port =
+               (u16)acpi_gbl_FADT->xpm1b_evt_blk.address;
+
+       ret = HYPERVISOR_platform_op(&op);
+
+       if (ret){
+               printk(KERN_WARNING "%s: Fail to register acpi sleep
info,"
+                               "Xen sleep will not work\n",
__FUNCTION__);
+               return ret;
+       }
+
+       acpi_wakeup_address = (unsigned long)
+               op.u.set_acpi_sleep.xen_waking_vec;
+       return ret;
+}
+
+extern unsigned long saved_video_mode;
+int acpi_notify_hypervisor_state(u8 sleep_state,
+       u32 pm1a_cnt, u32 pm1b_cnt)
+{
+       struct xen_platform_op op = {
+               .cmd = XENPF_enter_acpi_sleep,
+               .interface_version = XENPF_INTERFACE_VERSION,
+               .u = {
+                       .enter_acpi_sleep = {
+                               .pm1a_cnt_val = (u16)pm1a_cnt,
+                               .pm1b_cnt_val = (u16)pm1b_cnt,
+                               .sleep_state = sleep_state,
+                       },
+               },
+       };
+
+       op.u.enter_acpi_sleep.video_flags = acpi_video_flags;
+       op.u.enter_acpi_sleep.video_mode = saved_video_mode;
+
+       return HYPERVISOR_platform_op(&op);
+}
+#endif                         /* CONFIG_ACPI_PV_SLEEP */
+
 #endif                         /*CONFIG_ACPI_SLEEP */
 
 void acpi_pci_link_exit(void)
diff -r 713e909c27d2 arch/x86_64/kernel/head-xen.S
--- a/arch/x86_64/kernel/head-xen.S     Tue Jun 26 20:41:35 2007 -0400
+++ b/arch/x86_64/kernel/head-xen.S     Tue Jun 26 20:42:22 2007 -0400
@@ -37,6 +37,13 @@ startup_64:
        pushq $0                # fake return address
        jmp x86_64_start_kernel
 
+#ifdef CONFIG_ACPI_SLEEP
+.org 0xf00
+       .globl pGDT32
+pGDT32:
+       .word   gdt_end-cpu_gdt_table-1
+       .long   cpu_gdt_table-__START_KERNEL_map
+#endif
 ENTRY(stext)
 ENTRY(_stext)
 
@@ -95,6 +102,14 @@ NEXT_PAGE(hypercall_page)
        CFI_ENDPROC
 
 #undef NEXT_PAGE
+
+       .data
+/* Just dummy symbol to allow compilation. Not used in sleep path */
+#ifdef CONFIG_ACPI_SLEEP
+       .align PAGE_SIZE
+ENTRY(wakeup_level4_pgt)
+       .fill   512,8,0
+#endif
 
        .data
 
diff -r 713e909c27d2 arch/x86_64/kernel/suspend.c
--- a/arch/x86_64/kernel/suspend.c      Tue Jun 26 20:41:35 2007 -0400
+++ b/arch/x86_64/kernel/suspend.c      Tue Jun 26 20:42:22 2007 -0400
@@ -114,12 +114,14 @@ void restore_processor_state(void)
 
 void fix_processor_context(void)
 {
+#ifndef CONFIG_X86_NO_TSS    
        int cpu = smp_processor_id();
        struct tss_struct *t = &per_cpu(init_tss, cpu);
 
        set_tss_desc(cpu,t);    /* This just modifies memory; should not
be neccessary. But... This is neccessary, because 386 hardware has
concept of busy TSS or some similar stupidity. */
 
        cpu_gdt(cpu)[GDT_ENTRY_TSS].type = 9;
+#endif
 
        syscall_init();                         /* This sets MSR_*STAR
and related */
        load_TR_desc();                         /* This does ltr */
diff -r 713e909c27d2 buildconfigs/linux-defconfig_xen_x86_32
--- a/buildconfigs/linux-defconfig_xen_x86_32   Tue Jun 26 20:41:35 2007
-0400
+++ b/buildconfigs/linux-defconfig_xen_x86_32   Tue Jun 26 20:42:22 2007
-0400
@@ -202,11 +202,18 @@ CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
 # Power management options (ACPI, APM)
 #
 CONFIG_PM=y
+# CONFIG_PM_LEGACY is not set
+CONFIG_PM_DEBUG=y
+# CONFIG_SOFTWARE_SUSPEND is not set
+CONFIG_SUSPEND_SMP=y
 
 #
 # ACPI (Advanced Configuration and Power Interface) Support
 #
 CONFIG_ACPI=y
+CONFIG_ACPI_SLEEP=y
+CONFIG_ACPI_SLEEP_PROC_FS=y
+# CONFIG_ACPI_SLEEP_PROC_SLEEP is not set
 CONFIG_ACPI_AC=m
 CONFIG_ACPI_BATTERY=m
 CONFIG_ACPI_BUTTON=m
diff -r 713e909c27d2 buildconfigs/linux-defconfig_xen_x86_64
--- a/buildconfigs/linux-defconfig_xen_x86_64   Tue Jun 26 20:41:35 2007
-0400
+++ b/buildconfigs/linux-defconfig_xen_x86_64   Tue Jun 26 20:42:22 2007
-0400
@@ -162,11 +162,18 @@ CONFIG_GENERIC_PENDING_IRQ=y
 # Power management options
 #
 CONFIG_PM=y
+# CONFIG_PM_LEGACY is not set
+CONFIG_PM_DEBUG=y
+# CONFIG_SOFTWARE_SUSPEND is not set
+CONFIG_SUSPEND_SMP=y
 
 #
 # ACPI (Advanced Configuration and Power Interface) Support
 #
 CONFIG_ACPI=y
+CONFIG_ACPI_SLEEP=y
+CONFIG_ACPI_SLEEP_PROC_FS=y
+# CONFIG_ACPI_SLEEP_PROC_SLEEP is not set
 CONFIG_ACPI_AC=m
 CONFIG_ACPI_BATTERY=m
 CONFIG_ACPI_BUTTON=m
diff -r 713e909c27d2 drivers/acpi/Kconfig
--- a/drivers/acpi/Kconfig      Tue Jun 26 20:41:35 2007 -0400
+++ b/drivers/acpi/Kconfig      Tue Jun 26 20:42:22 2007 -0400
@@ -45,7 +45,7 @@ if ACPI
 
 config ACPI_SLEEP
        bool "Sleep States"
-       depends on X86 && (!SMP || SUSPEND_SMP) && !XEN
+       depends on X86 && (!SMP || SUSPEND_SMP)
        depends on PM
        default y
        ---help---
@@ -363,6 +363,10 @@ config ACPI_SBS
          A "Smart Battery" is quite old and quite rare compared
          to today's ACPI "Control Method" battery.
 
+config ACPI_PV_SLEEP
+       bool
+       depends on X86 && XEN
+       default y
 endif  # ACPI
 
 endmenu
diff -r 713e909c27d2 drivers/acpi/hardware/hwsleep.c
--- a/drivers/acpi/hardware/hwsleep.c   Tue Jun 26 20:41:35 2007 -0400
+++ b/drivers/acpi/hardware/hwsleep.c   Tue Jun 26 20:42:22 2007 -0400
@@ -327,6 +327,7 @@ acpi_status asmlinkage acpi_enter_sleep_
 
        ACPI_FLUSH_CPU_CACHE();
 
+#ifndef CONFIG_ACPI_PV_SLEEP
        status = acpi_hw_register_write(ACPI_MTX_DO_NOT_LOCK,
                                        ACPI_REGISTER_PM1A_CONTROL,
                                        PM1Acontrol);
@@ -337,6 +338,10 @@ acpi_status asmlinkage acpi_enter_sleep_
        status = acpi_hw_register_write(ACPI_MTX_DO_NOT_LOCK,
                                        ACPI_REGISTER_PM1B_CONTROL,
                                        PM1Bcontrol);
+#else
+       status = acpi_notify_hypervisor_state(sleep_state,
+                       PM1Acontrol, PM1Bcontrol);
+#endif
        if (ACPI_FAILURE(status)) {
                return_ACPI_STATUS(status);
        }
diff -r 713e909c27d2 drivers/acpi/sleep/main.c
--- a/drivers/acpi/sleep/main.c Tue Jun 26 20:41:35 2007 -0400
+++ b/drivers/acpi/sleep/main.c Tue Jun 26 20:42:22 2007 -0400
@@ -91,7 +91,14 @@ static int acpi_pm_enter(suspend_state_t
                break;
 
        case PM_SUSPEND_MEM:
+#ifdef CONFIG_ACPI_PV_SLEEP
+               /* Hyperviosr will save and restore CPU context
+                * and then we can skip low level housekeeping here.
+                */
+               acpi_enter_sleep_state(acpi_state);
+#else
                do_suspend_lowlevel();
+#endif
                break;
 
        case PM_SUSPEND_DISK:
@@ -145,10 +152,12 @@ static int acpi_pm_finish(suspend_state_
        /* reset firmware waking vector */
        acpi_set_firmware_waking_vector((acpi_physical_address) 0);
 
+#ifndef CONFIG_ACPI_PV_SLEEP
        if (init_8259A_after_S1) {
                printk("Broken toshiba laptop -> kicking interrupts\n");
                init_8259A(0);
        }
+#endif
        return 0;
 }
 
@@ -226,6 +235,10 @@ static int __init acpi_sleep_init(void)
        printk(")\n");
 
        pm_set_ops(&acpi_pm_ops);
+
+#ifdef CONFIG_ACPI_PV_SLEEP
+       acpi_register_sleep_info();
+#endif
        return 0;
 }
 
diff -r 713e909c27d2 drivers/acpi/sleep/poweroff.c
--- a/drivers/acpi/sleep/poweroff.c     Tue Jun 26 20:41:35 2007 -0400
+++ b/drivers/acpi/sleep/poweroff.c     Tue Jun 26 20:42:22 2007 -0400
@@ -25,9 +25,15 @@ int acpi_sleep_prepare(u32 acpi_state)
                if (!acpi_wakeup_address) {
                        return -EFAULT;
                }
+#ifndef CONFIG_ACPI_PV_SLEEP
                acpi_set_firmware_waking_vector((acpi_physical_address)
                                                virt_to_phys((void *)
 
acpi_wakeup_address));
+#else
+               /* physical address of hypervisor wakeup vector */
+               acpi_set_firmware_waking_vector((acpi_physical_address)
+                                               acpi_wakeup_address);
+#endif
 
        }
        ACPI_FLUSH_CPU_CACHE();
diff -r 713e909c27d2 include/asm-i386/acpi.h
--- a/include/asm-i386/acpi.h   Tue Jun 26 20:41:35 2007 -0400
+++ b/include/asm-i386/acpi.h   Tue Jun 26 20:42:22 2007 -0400
@@ -177,6 +177,11 @@ extern unsigned long acpi_wakeup_address
 /* early initialization routine */
 extern void acpi_reserve_bootmem(void);
 
+#ifdef CONFIG_ACPI_PV_SLEEP
+extern int acpi_notify_hypervisor_state(u8 sleep_state,
+       u32 pm1a_cnt, u32 pm1b_cnt);
+extern int acpi_register_sleep_info(void);
+#endif /* CONFIG_ACPI_PV_SLEEP */
 #endif /*CONFIG_ACPI_SLEEP*/
 
 extern u8 x86_acpiid_to_apicid[];
diff -r 713e909c27d2 include/asm-x86_64/acpi.h
--- a/include/asm-x86_64/acpi.h Tue Jun 26 20:41:35 2007 -0400
+++ b/include/asm-x86_64/acpi.h Tue Jun 26 20:42:22 2007 -0400
@@ -153,6 +153,11 @@ extern unsigned long acpi_wakeup_address
 /* early initialization routine */
 extern void acpi_reserve_bootmem(void);
 
+#ifdef CONFIG_ACPI_PV_SLEEP
+extern int acpi_notify_hypervisor_state(u8 sleep_state,
+       u32 pm1a_cnt, u32 pm1b_cnt);
+extern int acpi_register_sleep_info(void);
+#endif /* CONFIG_ACPI_PV_SLEEP */
 #endif /*CONFIG_ACPI_SLEEP*/
 
 #define boot_cpu_physical_apicid boot_cpu_id
diff -r 713e909c27d2 include/xen/interface/platform.h
--- a/include/xen/interface/platform.h  Tue Jun 26 20:41:35 2007 -0400
+++ b/include/xen/interface/platform.h  Tue Jun 26 20:38:40 2007 -0400
@@ -153,6 +153,31 @@ typedef struct xenpf_firmware_info xenpf
 typedef struct xenpf_firmware_info xenpf_firmware_info_t;
 DEFINE_XEN_GUEST_HANDLE(xenpf_firmware_info_t);
 
+#define XENPF_set_acpi_sleep      51
+struct xenpf_set_acpi_sleep {
+    /* IN variables. */
+    uint16_t pm1a_cnt_port;
+    uint16_t pm1b_cnt_port;
+    uint16_t pm1a_evt_port;
+    uint16_t pm1b_evt_port;
+    /* OUT variables */
+    uint64_t xen_waking_vec;   /* Tell dom0 to set FACS waking vector
*/
+};
+typedef struct xenpf_set_acpi_sleep xenpf_set_acpi_sleep_t;
+DEFINE_XEN_GUEST_HANDLE(xenpf_set_acpi_sleep_t);
+
+#define XENPF_enter_acpi_sleep    52
+struct xenpf_enter_acpi_sleep {
+    /* IN variables */
+    uint16_t pm1a_cnt_val;
+    uint16_t pm1b_cnt_val;
+    uint32_t sleep_state;       /* Which state to enter */
+    uint32_t video_flags;       /* S3_bios or s3_mode */
+    uint32_t video_mode;        /* Mode setting for s3_mode */
+};
+typedef struct xenpf_enter_acpi_sleep xenpf_enter_acpi_sleep_t;
+DEFINE_XEN_GUEST_HANDLE(xenpf_enter_acpi_sleep_t);
+
 struct xen_platform_op {
     uint32_t cmd;
     uint32_t interface_version; /* XENPF_INTERFACE_VERSION */
@@ -164,6 +189,8 @@ struct xen_platform_op {
         struct xenpf_microcode_update  microcode;
         struct xenpf_platform_quirk    platform_quirk;
         struct xenpf_firmware_info     firmware_info;
+        struct xenpf_set_acpi_sleep    set_acpi_sleep;
+        struct xenpf_enter_acpi_sleep  enter_acpi_sleep;
         uint8_t                        pad[128];
     } u;
 };

Attachment: enable_linux_acpi_sleep.patch
Description: enable_linux_acpi_sleep.patch

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