Re: [Xen-devel] [PATCH] Revert "x86/hvm: add support for pcommit instruction"

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

> From: Jan Beulich [mailto:JBeulich@xxxxxxxx]
> Sent: Monday, June 06, 2016 6:38 PM
> 
> >>> On 06.06.16 at 12:31, <wei.liu2@xxxxxxxxxx> wrote:
> > On Mon, Jun 06, 2016 at 02:54:47AM -0600, Jan Beulich wrote:
> >> >>> On 06.06.16 at 07:56, <haozhong.zhang@xxxxxxxxx> wrote:
> >> > This reverts commit cfacce340608be5f94ce0c8f424487b63c3d5399.
> >> >
> >> > Platforms supporting Intel NVDIMM are now required to provide
> >> > persistency once pmem stores are accepted by the memory subsystem.
> >> > This is usually achieved by a platform-level feature known as ADR
> >> > (Asynchronous DRAM Refresh) that flushes any memory subsystem write
> >> > pending queues on power loss/shutdown. Therefore, the pcommit
> >> > instruction, which has not yet shipped on any product (and will not),
> >> > is no longer needed and is deprecated.
> >> >
> >> > Signed-off-by: Haozhong Zhang <haozhong.zhang@xxxxxxxxx>
> >>
> >> Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
> >>
> >> Wei - certainly something to consider for 4.7.
> >>
> >
> > Sure. No point in shipping feature that won't show up in hardware.
> >
> > Release-acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>
> >
> > But please wait a bit before committing while we try to sort out RC5 and
> > branching etc.
> 
> Sure. Got to wait for a VMX maintainer ack anyway.
> 

Here it is:

Acked-by: Kevin Tian <kevin.tian@xxxxxxxxx>

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