The logic depends on being run on CPU0, and in IDLE context. Having this
explicitly identified allows for simplification of the whole S3 path.
Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
---
CC: Jan Beulich <jbeul...@suse.com>
CC: Wei Liu <w...@xen.org>
CC: Roger Pau Monné <roger....@citrix.com>
---
xen/arch/x86/acpi/power.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/xen/arch/x86/acpi/power.c b/xen/arch/x86/acpi/power.c
index aecc754fdb..d83e8cdd52 100644
--- a/xen/arch/x86/acpi/power.c
+++ b/xen/arch/x86/acpi/power.c
@@ -174,6 +174,8 @@ static int enter_state(u32 state)
return -EBUSY;
BUG_ON(system_state != SYS_STATE_active);
+ BUG_ON(!is_idle_vcpu(current));
+ BUG_ON(smp_processor_id() != 0);
system_state = SYS_STATE_suspend;
printk(XENLOG_INFO "Preparing system for ACPI S%d state.\n", state);
--
2.11.0
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