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Re: [PATCH v8 06/13] xen/arm: tee: keep init_tee_secondary() for hotplug and resume
- To: Mykola Kvach <xakep.amatop@xxxxxxxxx>
- From: Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Date: Thu, 7 May 2026 22:26:58 +0000
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- Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Mykola Kvach <Mykola_Kvach@xxxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Jens Wiklander <jens.wiklander@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>
- Delivery-date: Thu, 07 May 2026 22:27:02 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHcwo4dY/ZGRnVq+UOonkTUHmLh3g==
- Thread-topic: [PATCH v8 06/13] xen/arm: tee: keep init_tee_secondary() for hotplug and resume
Hi Mykola,
Mykola Kvach <xakep.amatop@xxxxxxxxx> writes:
> From: Mykola Kvach <mykola_kvach@xxxxxxxx>
>
> init_tee_secondary() was marked __init and freed after boot. Calling it
> from the CPU hotplug/resume path then executed discarded code, which
> could crash Xen. Drop __init so the TEE mediator secondary init can run
> safely on hotplugged and resumed CPUs.
>
> Signed-off-by: Mykola Kvach <mykola_kvach@xxxxxxxx>
Reviewed-by: Volodymyr Babchuk <volodymyr_babchuk@xxxxxxxx>
> ---
> xen/arch/arm/tee/tee.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/xen/arch/arm/tee/tee.c b/xen/arch/arm/tee/tee.c
> index 8501443c8e..00e561fc78 100644
> --- a/xen/arch/arm/tee/tee.c
> +++ b/xen/arch/arm/tee/tee.c
> @@ -128,7 +128,7 @@ static int __init tee_init(void)
>
> presmp_initcall(tee_init);
>
> -void __init init_tee_secondary(void)
> +void init_tee_secondary(void)
> {
> if ( cur_mediator && cur_mediator->ops->init_secondary )
> cur_mediator->ops->init_secondary();
--
WBR, Volodymyr
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