From: "Jan Beulich" <JBeulich@suse.com>
To: Haozhong Zhang <haozhong.zhang@intel.com>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>,
Kevin Tian <kevin.tian@intel.com>, Wei Liu <wei.liu2@citrix.com>,
Jun Nakajima <jun.nakajima@intel.com>,
xen-devel@lists.xen.org
Subject: Re: [PATCH] Revert "x86/hvm: add support for pcommit instruction"
Date: Mon, 06 Jun 2016 02:54:47 -0600 [thread overview]
Message-ID: <5755567702000078000F1E51@prv-mh.provo.novell.com> (raw)
In-Reply-To: <20160606055638.475-1-haozhong.zhang@intel.com>
>>> On 06.06.16 at 07:56, <haozhong.zhang@intel.com> 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@intel.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Wei - certainly something to consider for 4.7.
Jan
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next prev parent reply other threads:[~2016-06-06 8:54 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-06 5:56 [PATCH] Revert "x86/hvm: add support for pcommit instruction" Haozhong Zhang
2016-06-06 8:54 ` Jan Beulich [this message]
2016-06-06 10:31 ` Wei Liu
2016-06-06 10:37 ` Jan Beulich
2016-06-07 0:55 ` Tian, Kevin
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