mirror of
https://github.com/Fishwaldo/Star64_linux.git
synced 2025-03-16 04:04:06 +00:00
ACPI: processor_idle: use raw_safe_halt() in acpi_idle_play_dead()
commit 9bb69ba4c177dccaa1f5b5cbdf80b67813328348 upstream. Xen HVM guests were observed taking triple-faults when attempting to online a previously offlined vCPU. Investigation showed that the fault was coming from a failing call to lockdep_assert_irqs_disabled(), in load_current_idt() which was too early in the CPU bringup to actually catch the exception and report the failure cleanly. This was a false positive, caused by acpi_idle_play_dead() setting the per-cpu hardirqs_enabled flag by calling safe_halt(). Switch it to use raw_safe_halt() instead, which doesn't do so. Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: 6.6+ <stable@vger.kernel.org> # 6.6+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
30b5526bea
commit
73111754b5
1 changed files with 1 additions and 1 deletions
|
@ -592,7 +592,7 @@ static int acpi_idle_play_dead(struct cpuidle_device *dev, int index)
|
|||
while (1) {
|
||||
|
||||
if (cx->entry_method == ACPI_CSTATE_HALT)
|
||||
safe_halt();
|
||||
raw_safe_halt();
|
||||
else if (cx->entry_method == ACPI_CSTATE_SYSTEMIO) {
|
||||
io_idle(cx->address);
|
||||
} else
|
||||
|
|
Loading…
Add table
Reference in a new issue