linux-kernel - Re: [PATCH 01/18] media: venus: hfi_venus: Set venus_sys_idle

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]

Message-ID: <48ac4272-0e11-d943-e950-0be8d93fb036@linaro.org>
Date:   Tue, 28 Feb 2023 16:37:11 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        Stanimir Varbanov <stanimir.k.varbanov@...il.com>,
        Vikash Garodia <quic_vgarodia@...cinc.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Dikshita Agarwal <dikshita@....qualcomm.com>,
        Dikshita Agarwal <dikshita@...eaurora.org>,
        Mansur Alisha Shaik <mansur@...eaurora.org>,
        Jonathan Marek <jonathan@...ek.ca>
Cc:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Stanimir Varbanov <stanimir.varbanov@...aro.org>,
        linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Vikash Garodia <vgarodia@...eaurora.org>
Subject: Re: [PATCH 01/18] media: venus: hfi_venus: Set
 venus_sys_idle_indicator to false on V6



On 28.02.2023 16:31, Bryan O'Donoghue wrote:
> On 28/02/2023 15:26, Bryan O'Donoghue wrote:
>> On 28/02/2023 15:24, Konrad Dybcio wrote:
>>> This call does not seem to have been cast on any kernel with support
>>> for VPU-1.0 or newer (and by extension, HFI6 and newer). 
>>
>> We tested this on sm8250
>>
>> Restrict it
>>> to V4 only, as it seems to have been enabled by mistake and causes a
>>> hang & reboot to EDL on at least one occasion with SM6115 / AR50L
>>>
>>> Fixes: 7ed9e0b3393c ("media: venus: hfi, vdec: v6 Add IS_V6() to existing IS_V4() if locations")
>>> Signed-off-by: Konrad Dybcio<konrad.dybcio@...aro.org>
>>
>> Right. This may indeed fix it for you on SM6115, could you test it on RB5 and verify the above statement ?
>>
>> ---
>> bod
> 
> For example.
> 
> Doesn't your later patch take account of VPU h/w version ? IRIS_1, IRIS_2 etc.
> 
> When we added for V6 here, we meant for current tested V6 hardware at that point - at least sm8250.
> 
> Can you not differentiate sm6115 based on VPU hardware identifier ? We want to retain this logic for 8250 and then assuming your patch is correct, not do this for sm6115.
As far as my only source of information (msm-4.19 techpack) goes, this is
unnecessary/incorrect on 8250 as well. I doubt downstream would ship Venus
with no/broken low-power modes..

Konrad
> 
> ---
> bod