On Thu, Apr 17, 2025 at 8:30 PM Fugang Duan <fugang.d...@cixtech.com> wrote: > > 发件人: Alex Deucher <alexdeuc...@gmail.com> 发送时间: 2025年4月17日 21:08 > >On Wed, Apr 16, 2025 at 8:43 PM Fugang Duan <fugang.d...@cixtech.com> wrote: > >> > >> 发件人: Alex Deucher <alexdeuc...@gmail.com> 发送时间: 2025年4月16日 > >22:49 > >> >收件人: Alexey Klimov <alexey.kli...@linaro.org> On Wed, Apr 16, 2025 at > >> >9:48 AM Alexey Klimov <alexey.kli...@linaro.org> wrote: > >> >> > >> >> On Wed Apr 16, 2025 at 4:12 AM BST, Fugang Duan wrote: > >> >> > 发件人: Alexey Klimov <alexey.kli...@linaro.org> 发送时间: 2025年4 > >月16 > >> >日 2:28 > >> >> >>#regzbot introduced: v6.12..v6.13 > >> >> > >> >> [..] > >> >> > >> >> >>The only change related to hdp_v5_0_flush_hdp() was > >> >> >>cf424020e040 drm/amdgpu/hdp5.0: do a posting read when flushing > >> >> >>HDP > >> >> >> > >> >> >>Reverting that commit ^^ did help and resolved that problem. > >> >> >>Before sending revert as-is I was interested to know if there > >> >> >>supposed to be a proper fix for this or maybe someone is > >> >> >>interested to debug this or > >> >have any suggestions. > >> >> >> > >> >> > Can you revert the change and try again > >> >> > https://gitlab.com/linux-kernel/linux/-/commit/cf424020e040be35df > >> >> > 05b > >> >> > 682b546b255e74a420f > >> >> > >> >> Please read my email in the first place. > >> >> Let me quote just in case: > >> >> > >> >> >The only change related to hdp_v5_0_flush_hdp() was > >> >> >cf424020e040 drm/amdgpu/hdp5.0: do a posting read when flushing > >> >> >HDP > >> >> > >> >> >Reverting that commit ^^ did help and resolved that problem. > >> > > >> >We can't really revert the change as that will lead to coherency > >> >problems. What is the page size on your system? Does the attached patch > >fix it? > >> > > >> >Alex > >> > > >> 4K page size. We can try the fix if we got the environment. > > > >OK. that patch won't change anything then. Can you try this patch instead? > > > >Alex > > > Alex, it is very sorry that our team don't have the GPU card in hands. > It is better to ask amd gfx team help to try the fixes.
Sorry, we don't have the problematic arm board. This code works as expected on x86. Alex > > >> > >> Fugang > >> > >> > >> > >> This email (including its attachments) is intended only for the person or > >> entity > >to which it is addressed and may contain information that is privileged, > >confidential or otherwise protected from disclosure. Unauthorized use, > >dissemination, distribution or copying of this email or the information > >herein > >or taking any action in reliance on the contents of this email or the > >information > >herein, by anyone other than the intended recipient, or an employee or agent > >responsible for delivering the message to the intended recipient, is strictly > >prohibited. If you are not the intended recipient, please do not read, copy, > >use or disclose any part of this e-mail to others. Please notify the sender > >immediately and permanently delete this e-mail and any attachments if you > >received it in error. Internet communications cannot be guaranteed to be > >timely, > >secure, error-free or virus-free. The sender does not accept liability for > >any > >errors or omissions. > > > This email (including its attachments) is intended only for the person or > entity to which it is addressed and may contain information that is > privileged, confidential or otherwise protected from disclosure. Unauthorized > use, dissemination, distribution or copying of this email or the information > herein or taking any action in reliance on the contents of this email or the > information herein, by anyone other than the intended recipient, or an > employee or agent responsible for delivering the message to the intended > recipient, is strictly prohibited. If you are not the intended recipient, > please do not read, copy, use or disclose any part of this e-mail to others. > Please notify the sender immediately and permanently delete this e-mail and > any attachments if you received it in error. Internet communications cannot > be guaranteed to be timely, secure, error-free or virus-free. The sender does > not accept liability for any errors or omissions.
