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Date:   Mon, 7 Feb 2022 10:20:32 -0800 (PST)
From:   "Kenneth R. Crudup" <kenny@panix.com>
Reply-To: "Kenneth R. Crudup" <kenny@panix.com>
To:     Bjorn Helgaas <helgaas@kernel.org>
cc:     Vidya Sagar <vidyas@nvidia.com>, bhelgaas@google.com,
        lorenzo.pieralisi@arm.com, hkallweit1@gmail.com,
        wangxiongfeng2@huawei.com, mika.westerberg@linux.intel.com,
        kai.heng.feng@canonical.com, chris.packham@alliedtelesis.co.nz,
        yangyicong@hisilicon.com, treding@nvidia.com, jonathanh@nvidia.com,
        abhsahu@nvidia.com, sagupta@nvidia.com, linux-pci@vger.kernel.org,
        linux-kernel@vger.kernel.org, kthota@nvidia.com,
        mmaddireddy@nvidia.com, sagar.tv@gmail.com,
        "Kenneth R. Crudup" <kenny@panix.com>
Subject: Re: [PATCH V1] PCI/ASPM: Save/restore L1SS Capability for
 suspend/resume
In-Reply-To: <20220207163332.GA397884@bhelgaas>
Message-ID: <79a41832-12e2-2ed-f3af-da3bac90d941@panix.com>
References: <20220207163332.GA397884@bhelgaas>
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On Mon, 7 Feb 2022, Bjorn Helgaas wrote:

> I think it's more likely that something changed in BIOS settings or
> other configuration, which means other people may trip over it even if
> you don't see it.  Do you remember any BIOS updates, BIOS setup
> tweaks, hardware changes, kernel parameter changes, etc?

I thought about that Saturday morning, and yeah, it's been over a year, and
Dell has released at least two BIOS updates since then.

> If the problem really was fixed by some change elsewhere, it *should*
> still happen on v5.11-rc1.  I think we should verify that and try to
> figure out what the other change was.

Yeah, not a bad idea. I'm a little busy now, but I'll cut a kernel at
4257f7e0, remake, and see what happens. Gimme a day or so.

	-Kenny

-- 
Kenneth R. Crudup / Sr. SW Engineer, Scott County Consulting, Orange County CA