On Thu, Oct 10, 2024 at 09:31:37AM +0200, Jinpu Wang wrote:
> Hello all,
>
> We are experiencing a boot hang issue when booting kernel version
> 6.1.83+ on a Dell Inc. PowerEdge R770 equipped with an Intel Xeon
> 6710E processor. After extensive testing and use of `git bisect`, we
> have traced the issue to commit:
>
> `586e19c88a0c ("iommu/vt-d: Retrieve IOMMU perfmon capability information")`
>
> This commit appears to be part of a larger patchset, which can be found here:
> [Patchset on lore.kernel.org](https://lore.kernel.org/lkml/7c4b3e4e-1c5d-04f1-1891-84f686c94736@xxxxxxxxxxxxxxx/T/)
>
> We attempted to boot with the `intel_iommu=off` option, but the system
> hangs in the same manner. However, the system boots successfully after
> disabling `CONFIG_INTEL_IOMMU_PERF_EVENTS`.
Is there any error messages? Does the latest 6.6.y tree work properly?
If so, why not just use that, no new hardware should be using older
kernel trees anyway :)
thanks,
greg k-h
