Re: [PATCH 6.4 737/737] Revert "drm/amd/display: Do not set drr on pipe commit"

On Tue, Sep 12, 2023 at 03:31:16PM +0000, Pillai, Aurabindo wrote:

[AMD Official Use Only - General]

Hi Greg,

It was reverted but has been re-applied.

Here is a chronological summary of what happened:

1. Michel bisected some major issues to "drm/amd/display: Do not set drr on pipe commit" and was revered in upstream. ". Along with that patch, "drm/amd/display: Block optimize on consecutive FAMS enables" was also reverted due to dependency.
2. We found that reverting these patches caused some multi monitor configurations to hang on RDNA3.
3. We debugged Michel's issue and merged a workaround (https://gitlab.freedesktop.org/agd5f/linux/-/commit/cc225c8af276396c3379885b...
4. Subsequently, the two patches were reapplied (https://gitlab.freedesktop.org/agd5f/linux/-/commit/bfe1b43c1acee1251ddb0915... and https://gitlab.freedesktop.org/agd5f/linux/-/commit/f3c2a89c5103b4ffdd88f09c...)

Hence, the stable kernel should have all 3 patches - the workaround and 2 others. Hope that clarifies the situation.

Great, what are the ids of those in Linus's tree?

thanks,

greg k-h