>[Adding Fenghua Yu to the thread as he submitted the iommu suspend/resume >patch (https://lists.linux-foundation.org/pipermail/iommu/2009- >March/001247.html) which pertains to this issue] > >Thought I would clarify that resume from S3 would have never worked with >intel_iommu enabled on HP 6930p as opposed to this being a regression for >the following reasons - > >1) Before the above mentioned patch, when intel_iommu is enabled, during >S3/resume we would encounter a kernel crash due to lack of iommu >suspend/resume support. >2) After iommu suspend/resume support was added, resume failed on HP 6930p >due to enable translation unit code added by the above patch to the iommu >resume code path. Yes, you are right. This is not a regression. Now we are talking about suspend/resume issue on HP 6930P. The suspend/resume patch should have been tested on many platforms either by me or by others for quite a while. So I would guess this is an issue specific to HP 6930p, e.g. BIOS issue. Could you please send out log buffer message (from serial port or kdb) after the failure? Thanks. -Fenghua -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
