From: Tyler Hicks <tyhicks@linux.microsoft.com>
To: Allen Pais <allen.lkml@gmail.com>
Cc: jens.wiklander@linaro.org, zajec5@gmail.com,
bcm-kernel-feedback-list@broadcom.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, op-tee@lists.trustedfirmware.org,
Allen Pais <apais@linux.microsoft.com>
Subject: Re: [PATCH v2 2/2] firmware: tee_bnxt: implement shutdown method to handle kexec reboots
Date: Thu, 18 Mar 2021 15:55:36 -0500 [thread overview]
Message-ID: <20210318205536.GB6446@sequoia> (raw)
In-Reply-To: <20210225090610.242623-3-allen.lkml@gmail.com>
On 2021-02-25 14:36:10, Allen Pais wrote:
> From: Allen Pais <apais@linux.microsoft.com>
>
> On kexec reboot the firmware driver fails to deallocate
> shm memory leading to a memory leak. Implement .shutdown()
> method to handle kexec reboots and to release shm buffers
> correctly.
>
> Signed-off-by: Allen Pais <apais@linux.microsoft.com>
Reviewed-by: Tyler Hicks <tyhicks@linux.microsoft.com>
Tyler
> ---
> drivers/firmware/broadcom/tee_bnxt_fw.c | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> diff --git a/drivers/firmware/broadcom/tee_bnxt_fw.c b/drivers/firmware/broadcom/tee_bnxt_fw.c
> index ed10da5313e8..4c62e044a99f 100644
> --- a/drivers/firmware/broadcom/tee_bnxt_fw.c
> +++ b/drivers/firmware/broadcom/tee_bnxt_fw.c
> @@ -242,6 +242,14 @@ static int tee_bnxt_fw_remove(struct device *dev)
> return 0;
> }
>
> +static void tee_bnxt_fw_shutdown(struct device *dev)
> +{
> + tee_shm_free(pvt_data.fw_shm_pool);
> + tee_client_close_session(pvt_data.ctx, pvt_data.session_id);
> + tee_client_close_context(pvt_data.ctx);
> + pvt_data.ctx = NULL;
> +}
> +
> static const struct tee_client_device_id tee_bnxt_fw_id_table[] = {
> {UUID_INIT(0x6272636D, 0x2019, 0x0716,
> 0x42, 0x43, 0x4D, 0x5F, 0x53, 0x43, 0x48, 0x49)},
> @@ -257,6 +265,7 @@ static struct tee_client_driver tee_bnxt_fw_driver = {
> .bus = &tee_bus_type,
> .probe = tee_bnxt_fw_probe,
> .remove = tee_bnxt_fw_remove,
> + .shutdown = tee_bnxt_fw_shutdown,
> },
> };
>
> --
> 2.25.1
>
next prev parent reply other threads:[~2021-03-18 20:56 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-25 9:06 [PATCH v2 0/2] optee: fix OOM seen due to tee_shm_free() Allen Pais
2021-02-25 9:06 ` [PATCH v2 1/2] optee: fix tee out of memory failure seen during kexec reboot Allen Pais
2021-03-01 14:35 ` Jens Wiklander
2021-03-02 5:51 ` Allen Pais
2021-03-16 13:21 ` Allen Pais
2021-03-19 7:00 ` Jens Wiklander
2021-03-22 7:59 ` Allen Pais
2021-05-05 13:45 ` Allen Pais
2021-05-06 7:02 ` Jens Wiklander
2021-05-06 7:10 ` Allen Pais
2021-05-06 7:19 ` Jens Wiklander
2021-05-06 7:29 ` Allen Pais
2021-05-06 8:15 ` Jens Wiklander
2021-05-06 8:35 ` Allen Pais
2021-05-07 7:03 ` Allen Pais
2021-03-18 20:51 ` Tyler Hicks
2021-02-25 9:06 ` [PATCH v2 2/2] firmware: tee_bnxt: implement shutdown method to handle kexec reboots Allen Pais
2021-03-18 20:55 ` Tyler Hicks [this message]
2021-05-07 3:58 ` [PATCH] optee: Disable shm cache when booting the crash kernel Tyler Hicks
2021-05-07 7:00 ` Allen Pais
2021-05-07 9:23 ` Jens Wiklander
2021-05-07 9:32 ` Allen Pais
2021-05-07 13:17 ` Tyler Hicks
2021-05-10 7:31 ` Jens Wiklander
2021-05-12 0:23 ` Tyler Hicks
2021-05-12 5:50 ` Jens Wiklander
2021-05-17 20:24 ` Tyler Hicks
2021-05-17 20:31 ` Tyler Hicks
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