This is a note to let you know that I've just added the patch titled
locking/pvqspinlock: Correct the type of "old" variable in pv_kick_node()
to the 6.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
locking-pvqspinlock-correct-the-type-of-old-variable.patch
and it can be found in the queue-6.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit fed28319395deb213e9ffec499733460f57640c5
Author: Uros Bizjak <ubizjak@xxxxxxxxx>
Date: Sun Jul 21 18:45:41 2024 +0200
locking/pvqspinlock: Correct the type of "old" variable in pv_kick_node()
[ Upstream commit 6623b0217d0c9bed80bfa43b778ce1c0eb03b497 ]
"enum vcpu_state" is not compatible with "u8" type for all targets,
resulting in:
error: initialization of 'u8 *' {aka 'unsigned char *'} from incompatible pointer type 'enum vcpu_state *'
for LoongArch. Correct the type of "old" variable to "u8".
Fixes: fea0e1820b51 ("locking/pvqspinlock: Use try_cmpxchg() in qspinlock_paravirt.h")
Closes: https://lore.kernel.org/lkml/20240719024010.3296488-1-maobibo@xxxxxxxxxxx/
Reported-by: Bibo Mao <maobibo@xxxxxxxxxxx>
Signed-off-by: Uros Bizjak <ubizjak@xxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Acked-by: Waiman Long <longman@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240721164552.50175-1-ubizjak@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/kernel/locking/qspinlock_paravirt.h b/kernel/locking/qspinlock_paravirt.h
index f5a36e67b5935..ac2e225027410 100644
--- a/kernel/locking/qspinlock_paravirt.h
+++ b/kernel/locking/qspinlock_paravirt.h
@@ -357,7 +357,7 @@ static void pv_wait_node(struct mcs_spinlock *node, struct mcs_spinlock *prev)
static void pv_kick_node(struct qspinlock *lock, struct mcs_spinlock *node)
{
struct pv_node *pn = (struct pv_node *)node;
- enum vcpu_state old = vcpu_halted;
+ u8 old = vcpu_halted;
/*
* If the vCPU is indeed halted, advance its state to match that of
* pv_wait_node(). If OTOH this fails, the vCPU was running and will
