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From: Don Dutile <>
To: Hanjun Guo <>, Bjorn Helgaas <>
Cc: Bjorn Helgaas <>,,
	Alex Williamson <>
Subject: Re: [PATCH] PCI: Put the IVRS table in AMD ACS quirk handler
Date: Thu, 30 Jul 2020 12:30:22 -0400
Message-ID: <> (raw)
In-Reply-To: <>

On 7/30/20 2:14 AM, Hanjun Guo wrote:
> On 2020/7/30 7:02, Bjorn Helgaas wrote:
>> [+cc Alex, Don]
>> On Wed, Jul 22, 2020 at 05:44:28PM +0800, Hanjun Guo wrote:
>>> The acpi_get_table() should be coupled with acpi_put_table() if
>>> the mapped table is not used at runtime to release the table
>>> mapping.
>>> In pci_quirk_amd_sb_acs(), IVRS table is just used for checking
>>> AMD IOMMU is supported, not used at runtime, put the table after
>>> using it.
>>> Signed-off-by: Hanjun Guo <>
>> Applied to pci/virtualization for v5.9, thanks!
>> I added this:
>>    Fixes: 15b100dfd1c9 ("PCI: Claim ACS support for AMD southbridge devices")
>> but I didn't add a stable tag.  Does this cause any issue that would
>> warrant a stable tag?
For most of our (bug-fix & functional backport tooling) we focus on 'Fixes' and not
specific stable tagging, since our kernel becomes quite a mix of upstream once we venture much past the RHEL-X.0 GA.
I have seen others that use/reference the stable trees as another sanity check; or a way to
modify a RHEL kernel source into their own private use. Thus, RHEL doesn't have as strong a dependency on stable, as much as it does upstream-tip.

> We don't have one when I was sending same function patch for ACPI
> subsystem, so I think it's OK to without a stable tag for this
> patch as well.
> Thanks
> Hanjun

      reply index

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-22  9:44 Hanjun Guo
2020-07-29 23:02 ` Bjorn Helgaas
2020-07-30  6:14   ` Hanjun Guo
2020-07-30 16:30     ` Don Dutile [this message]

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