Re: [PATCH v4 00/11] Re-enable ENQCMD and PASID MSR

Fenghua Yu
2022-02-11T20:04:52Z

Hi, Thomas,

On Mon, Feb 07, 2022 at 03:02:43PM -0800, Fenghua Yu wrote:
> Problems in the old code to manage SVM (Shared Virtual Memory) devices
> and the PASID (Process Address Space ID) led to that code being
> disabled.
>
> Subsequent discussions resulted in a far simpler approach:
>
> 1) PASID life cycle is from first allocation by a process until that
> process exits.
> 2) All tasks begin with PASID disabled
> 3) The #GP fault handler tries to fix faulting ENQCMD instructions very
> early (thus avoiding complexities of the XSAVE infrastructure)
>
> Change Log:
> v4:
> - Update commit message in patch #4 (Thomas).
> - Update commit message in patch #5 (Thomas).
> - Add "Reviewed-by: Thomas Gleixner <tglx@linutronix.de>" in patch #1-#3
> and patch #6-#9 (Thomas).
> - Rebased to 5.17-rc3.

A friendly reminder. Any comment on this series? Will you pick up this
series in tip?

Thank you very much!

-Fenghua