linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Jens Wiklander <jens.wiklander@linaro.org>
To: Sumit Garg <sumit.garg@linaro.org>
Cc: linux-kernel@vger.kernel.org, op-tee@lists.trustedfirmware.org,
	Herbert Xu <herbert@gondor.apana.org.au>,
	Devaraj Rangasamy <Devaraj.Rangasamy@amd.com>,
	Rijo Thomas <Rijo-john.Thomas@amd.com>,
	David Howells <dhowells@redhat.com>,
	Tyler Hicks <tyhicks@linux.microsoft.com>,
	stable@vger.kernel.org, Lars Persson <larper@axis.com>
Subject: Re: [PATCH v3 07/12] optee: use driver internal tee_contex for some rpc
Date: Thu, 27 Jan 2022 13:39:10 +0100	[thread overview]
Message-ID: <CAHUa44HdOjJCt_1yGKaWXW6rUqo0ZGHBk7Tutwk69iv-7TR+mg@mail.gmail.com> (raw)
In-Reply-To: <CAFA6WYOLRqU4m5RJGJac9AtcpD7pt9Owd7D+XN8GjWRMAPBNuw@mail.gmail.com>

On Thu, Jan 27, 2022 at 7:32 AM Sumit Garg <sumit.garg@linaro.org> wrote:
>
> +Lars
>
> Hi Jens,
>
> On Tue, 25 Jan 2022 at 21:59, Jens Wiklander <jens.wiklander@linaro.org> wrote:
> >
> > Uses the new driver internal tee_context when allocating driver private
> > shared memory. This decouples the shared memory object from its original
> > tee_context. This is needed when the life time of such a memory
> > allocation outlives the client tee_context.
> >
> > Fixes: 217e0250cccb ("tee: use reference counting for tee_context")
> > Cc: stable@vger.kernel.org
> > Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
> > Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
> > ---
> >  drivers/tee/optee/ffa_abi.c | 17 +++++++++--------
> >  drivers/tee/optee/smc_abi.c |  7 ++++---
> >  2 files changed, 13 insertions(+), 11 deletions(-)
> >
>
> As this commit fixes multiple issues seen earlier due to pre-allocated
> SHM cache in client's context. I think it makes sense to separate this
> as a standalone fix with few bits from patch #6 to target 5.17
> release. As otherwise it will take a long path via 5.18 and then
> backport to stable trees. In the meantime there can be other side
> effects noticed similar to one from Lars.

The few bits needed from #6 is actually the entire "optee: add driver
private tee_context". I'll combine the two and send them as a separate
patch, that way it's easier to keep track of what's needed for the
stable trees.

Thanks,
Jens

  reply	other threads:[~2022-01-27 12:39 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-25 16:29 [PATCH v3 00/12] tee: shared memory updates Jens Wiklander
2022-01-25 16:29 ` [PATCH v3 01/12] hwrng: optee-rng: use tee_shm_alloc_kernel_buf() Jens Wiklander
2022-01-25 16:29 ` [PATCH v3 02/12] tee: remove unused tee_shm_pool_alloc_res_mem() Jens Wiklander
2022-01-25 16:29 ` [PATCH v3 03/12] tee: add tee_shm_alloc_user_buf() Jens Wiklander
2022-01-27  5:56   ` Sumit Garg
2022-01-27  8:09     ` Jens Wiklander
2022-01-25 16:29 ` [PATCH v3 04/12] tee: simplify shm pool handling Jens Wiklander
2022-01-27  6:09   ` Sumit Garg
2022-01-27  8:27     ` Jens Wiklander
2022-01-25 16:29 ` [PATCH v3 05/12] tee: replace tee_shm_alloc() Jens Wiklander
2022-01-27  6:16   ` Sumit Garg
2022-01-27  8:31     ` Jens Wiklander
2022-01-25 16:29 ` [PATCH v3 06/12] optee: add driver private tee_context Jens Wiklander
2022-01-27  6:24   ` Sumit Garg
2022-01-25 16:29 ` [PATCH v3 07/12] optee: use driver internal tee_contex for some rpc Jens Wiklander
2022-01-27  6:32   ` Sumit Garg
2022-01-27 12:39     ` Jens Wiklander [this message]
2022-01-25 16:29 ` [PATCH v3 08/12] optee: add optee_pool_op_free_helper() Jens Wiklander
2022-01-25 16:29 ` [PATCH v3 09/12] tee: add tee_shm_register_{user,kernel}_buf() Jens Wiklander
2022-01-27  6:35   ` Sumit Garg
2022-01-25 16:29 ` [PATCH v3 10/12] KEYS: trusted: tee: use tee_shm_register_kernel_buf() Jens Wiklander
2022-01-25 16:29 ` [PATCH v3 11/12] tee: replace tee_shm_register() Jens Wiklander
2022-01-27  6:59   ` Sumit Garg
2022-01-27 13:00     ` Jens Wiklander
2022-01-25 16:29 ` [PATCH v3 12/12] tee: refactor TEE_SHM_* flags Jens Wiklander
2022-01-27  7:05   ` Sumit Garg

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CAHUa44HdOjJCt_1yGKaWXW6rUqo0ZGHBk7Tutwk69iv-7TR+mg@mail.gmail.com \
    --to=jens.wiklander@linaro.org \
    --cc=Devaraj.Rangasamy@amd.com \
    --cc=Rijo-john.Thomas@amd.com \
    --cc=dhowells@redhat.com \
    --cc=herbert@gondor.apana.org.au \
    --cc=larper@axis.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=op-tee@lists.trustedfirmware.org \
    --cc=stable@vger.kernel.org \
    --cc=sumit.garg@linaro.org \
    --cc=tyhicks@linux.microsoft.com \
    --subject='Re: [PATCH v3 07/12] optee: use driver internal tee_contex for some rpc' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).