linux-kernel - Re: [PATCH v9 00/13] firmware: qcom: qseecom: convert to using the TZ allocator

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Thu, 4 Apr 2024 20:36:03 +0200
From: Maximilian Luz <luzmaximilian@...il.com>
To: Bartosz Golaszewski <brgl@...ev.pl>
Cc: Andy Gross <agross@...nel.org>, Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konrad.dybcio@...aro.org>,
 Elliot Berman <quic_eberman@...cinc.com>,
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
 Guru Das Srinagesh <quic_gurus@...cinc.com>,
 Andrew Halaney <ahalaney@...hat.com>, Alex Elder <elder@...aro.org>,
 Srini Kandagatla <srinivas.kandagatla@...aro.org>,
 Arnd Bergmann <arnd@...db.de>, linux-arm-msm@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 kernel@...cinc.com, Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [PATCH v9 00/13] firmware: qcom: qseecom: convert to using the TZ
 allocator


On 4/2/24 10:44 AM, Bartosz Golaszewski wrote:
> On Sat, Mar 30, 2024 at 8:16 PM Bartosz Golaszewski <brgl@...ev.pl> wrote:
>>
>> On Fri, 29 Mar 2024 20:57:52 +0100, Maximilian Luz <luzmaximilian@...il.com> said:
>>> On 3/29/24 8:46 PM, Bartosz Golaszewski wrote:
>>>> On Fri, 29 Mar 2024 at 20:39, Maximilian Luz <luzmaximilian@...il.com> wrote:
>>>>>
>>>>> On 3/29/24 8:26 PM, Bartosz Golaszewski wrote:
>>>>>> On Fri, 29 Mar 2024 at 20:22, Maximilian Luz <luzmaximilian@...il.com> wrote:
>>>>>>>
>>>>>>> On 3/29/24 8:07 PM, Bartosz Golaszewski wrote:
>>>>>>>>
>>>>>>>> Both with and without SHM bridge?
>>>>>>>
>>>>>>> With CONFIG_QCOM_TZMEM_MODE_GENERIC=y (and the upcoming fix) everything
>>>>>>> works. With CONFIG_QCOM_TZMEM_MODE_SHMBRIDGE=y things unfortunately
>>>>>>> still get stuck at boot (regardless of the fix). I think that's
>>>>>>> happening even before anything efivar related should come up.
>>>>>>>
>>>>>>
>>>>>> This is on X13s? I will get one in 3 weeks. Can you get the bootlog
>>>>>> somehow? Does the laptop have any serial console?
>>>>>
>>>>> Surface Pro X (sc8180x), but it should be similar enough to the X13s in
>>>>> that regard. At least from what people with access to the X13s told me,
>>>>> the qseecom stuff seems to behave the same.
>>>>>
>>>>> Unfortunately I don't have a direct serial console. Best I have is
>>>>> USB-serial, but it's not even getting there. I'll have to try and see if
>>>>> I can get some more info on the screen.
>>>>>
>>>>
>>>> I have access to a sc8180x-primus board, does it make sense to test
>>>> with this one? If so, could you give me instructions on how to do it?
>>>
>>> I guess it's worth a shot.
>>>
>>>   From what I can tell, there shouldn't be any patches in my tree that
>>> would conflict with it. So I guess it should just be building it with
>>> CONFIG_QCOM_TZMEM_MODE_SHMBRIDGE=y and booting.
>>>
>>> I am currently testing it on top of a patched v6.8 tree though (but that
>>> should just contain patches to get the Pro X running). You can find the
>>> full tree at
>>>
>>>       https://github.com/linux-surface/kernel/tree/spx/v6.8
>>>
>>> The last commit is the fix I mentioned, so you might want to revert
>>> that, since the shmem issue triggers regardless of that and it prevents
>>> your series from applying cleanly.
>>>
>>> Best regards,
>>> Max
>>>
>>
>> sc8180x-primus' support upstream is quite flaky. The board boots 50% of time.
>> However it's true that with SHM bridge it gets to:
>>
>> mount: mounting efivarfs on /sys/firmware/efi/efivars failed: Operation not supported
>>
>> and stops 100% of the time. Without SHM bridge I cannot boot it either because
>> I suppose I need the patch you sent yesterday. I haven't had the time to
>> rebase it yet, it's quite intrusive to my series.
>>
>> I can confirm that with that patch the board still boots but still 50% of the
>> time.
>>
>> Bart
> 
> Hi!
> 
> I was under the impression that until v8, the series worked on sc8180x
> but I'm seeing that even v7 has the same issue with SHM Bridge on
> sc8180x-primus. Could you confirm? Because I'm not sure if I should
> track the differences or the whole thing was broken for this platform
> from the beginning.

Hi, sorry for the delay.

Unfortunately I haven't had the time to test anything since v3. I don't
remember all the details, but based on what I wrote back then, enabling
the SHM bridge option did not lead to this result.

I can try to test v7 (and others) on the weekend.

Best regards,
Max