In message: [linux-yocto][v6.1/standard/x86 and v6.1/standard/preempt-rt/x86][PATCH 0/1] Fix Intel Grand Ridge cannot boot issue on 24/04/2024 Yongxin Liu wrote:
> > Hi Bruce, > > Intel Grand Ridge cannot boot after the backport of commit a6a5006dad57 > ("iommu/vt-d: Retrieve IOMMU perfmon capability information"), in v6.1.83. > > This patch is the second patch of the following patch series in mainline. > > d8a7c0cf05a2 2023-02-03 11:06 Kan Liang iommu/vt-d: Enable IOMMU > perfmon support > 4a0d4265659b 2023-02-03 11:06 Kan Liang iommu/vt-d: Add IOMMU perfmon > overflow handler support > 46284c6ceb5e 2023-02-03 11:06 Kan Liang iommu/vt-d: Support cpumask > for IOMMU perfmon > 7232ab8b89e9 2023-02-03 11:06 Kan Liang iommu/vt-d: Add IOMMU perfmon > support > dc57875866ab 2023-02-03 11:06 Kan Liang iommu/vt-d: Support Enhanced > Command Interface > a6a5006dad57 2023-02-03 11:06 Kan Liang iommu/vt-d: Retrieve IOMMU > perfmon capability information > 4db96bfe9d77 2023-02-03 11:06 Kan Liang iommu/vt-d: Support size of > the register set in DRHD > > It is strange only one patch was backported in linux-stable v6.1. > Because in order to eable IOMMU perfmon, all patches should be backported. > > Anyway, we need to back port the first patch to boot kernel on newer > hardware, such as Intel GrandRidge. > > So please help to merge this patch to v6.1/standard/x86 and > v6.1/standard/preempt-rt/x86. merged. Bruce > > > Thanks, > Yongxin >
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