From: "Derrick, Jonathan" <jonathan.derrick@intel.com>
To: "kai.heng.feng@canonical.com" <kai.heng.feng@canonical.com>,
"hch@infradead.org" <hch@infradead.org>
Cc: "wangxiongfeng2@huawei.com" <wangxiongfeng2@huawei.com>,
"kw@linux.com" <kw@linux.com>,
"hkallweit1@gmail.com" <hkallweit1@gmail.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"mika.westerberg@linux.intel.com"
<mika.westerberg@linux.intel.com>,
"Mario.Limonciello@dell.com" <Mario.Limonciello@dell.com>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"Williams, Dan J" <dan.j.williams@intel.com>,
"bhelgaas@google.com" <bhelgaas@google.com>,
"Huffman, Amber" <amber.huffman@intel.com>,
"Wysocki, Rafael J" <rafael.j.wysocki@intel.com>
Subject: Re: [PATCH] PCI/ASPM: Enable ASPM for links under VMD domain
Date: Wed, 26 Aug 2020 21:43:27 +0000 [thread overview]
Message-ID: <cd5aa2fef13f14b30c139d03d5256cf93c7195dc.camel@intel.com> (raw)
In-Reply-To: <20200825062320.GA27116@infradead.org>
On Tue, 2020-08-25 at 06:23 +0000, Christoph Hellwig wrote:
> On Fri, Aug 21, 2020 at 08:32:20PM +0800, Kai-Heng Feng wrote:
> > New Intel laptops with VMD cannot reach deeper power saving state,
> > renders very short battery time.
>
> So what about just disabling VMD given how bloody pointless it is?
> Hasn't anyone learned from the AHCI remapping debacle?
>
> I'm really pissed at all this pointless crap intel comes up with just
> to make life hard for absolutely no gain. Is it so hard to just leave
> a NVMe device as a standard NVMe device instead of f*^&ing everything
> up in the chipset to make OS support a pain and I/O slower than by
> doing nothing?
Feel free to review my set to disable the MSI remapping which will make
it perform as well as direct-attached:
https://patchwork.kernel.org/project/linux-pci/list/?series=325681
next prev parent reply other threads:[~2020-08-26 21:43 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-21 12:32 [PATCH] PCI/ASPM: Enable ASPM for links under VMD domain Kai-Heng Feng
2020-08-24 13:04 ` Mika Westerberg
2020-08-25 6:23 ` Christoph Hellwig
2020-08-25 6:39 ` Kai Heng Feng
2020-08-25 6:56 ` Christoph Hellwig
2020-08-26 5:53 ` Kai-Heng Feng
2020-09-02 19:48 ` David Fugate
2020-09-02 22:54 ` Keith Busch
2020-08-26 21:43 ` Derrick, Jonathan [this message]
2020-08-27 6:34 ` hch
2020-08-27 16:13 ` Derrick, Jonathan
2020-08-27 16:23 ` hch
2020-08-27 16:45 ` Derrick, Jonathan
2020-08-27 16:50 ` hch
2020-08-27 21:33 ` Dan Williams
2020-08-29 7:23 ` hch
2020-08-27 17:49 ` Limonciello, Mario
2020-08-29 7:24 ` hch
2020-09-10 1:55 ` Bjorn Helgaas
2020-09-10 16:33 ` Derrick, Jonathan
2020-09-10 17:38 ` Bjorn Helgaas
[not found] <0f902d555deb423ef1c79835b23c917be2633162.camel@intel.com>
2020-09-10 19:17 ` Bjorn Helgaas
2020-09-10 19:51 ` Derrick, Jonathan
2020-09-17 17:20 ` Bjorn Helgaas
2020-09-23 14:29 ` Kai-Heng Feng
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