Messages in this thread | | | Date | Thu, 30 Mar 2023 16:06:41 +0100 | From | Will Deacon <> | Subject | Re: [PATCH v5] iommu/arm-smmu-qcom: Limit the SMR groups to 128 |
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On Thu, Mar 30, 2023 at 11:11:27AM +0530, Manivannan Sadhasivam wrote: > On Mon, Mar 27, 2023 at 01:52:01PM +0100, Will Deacon wrote: > > On Mon, 27 Mar 2023 13:30:29 +0530, Manivannan Sadhasivam wrote: > > > Some platforms support more than 128 stream matching groups than what is > > > defined by the ARM SMMU architecture specification. But due to some unknown > > > reasons, those additional groups don't exhibit the same behavior as the > > > architecture supported ones. > > > > > > For instance, the additional groups will not detect the quirky behavior of > > > some firmware versions intercepting writes to S2CR register, thus skipping > > > the quirk implemented in the driver and causing boot crash. > > > > > > [...] > > > > Applied to will (for-joerg/arm-smmu/updates), thanks! > > > > Thanks Will! Could you please tag this patch for 6.3-rcS? Even though this patch > is not fixing any issue introduced in 6.3, the affected platform (SC8280XP) has > reasonable upstream support in 6.3 and the distro folks would like to stick to > it for some time. This patch will allow them to boot mainline without any > additional out-of-tree patches.
I already queued this up for 6.4 since it's neither a regression nor marked for stable inclusion.
Having said that, once it lands in mainline feel free to propose a -stable backport if it's needed by distros.
Will
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