From: Jeremy Linton <jeremy.linton@arm.com>
To: John Garry <john.garry@huawei.com>, Will Deacon <will@kernel.org>,
"Rafael J. Wysocki" <rafael@kernel.org>
Cc: "lorenzo.pieralisi@arm.com" <lorenzo.pieralisi@arm.com>,
"rric@kernel.org" <rric@kernel.org>,
"catalin.marinas@arm.com" <catalin.marinas@arm.com>,
"rjw@rjwysocki.net" <rjw@rjwysocki.net>,
"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
Robert Richter <rrichter@marvell.com>,
wanghuiqiang <wanghuiqiang@huawei.com>,
"sudeep.holla@arm.com" <sudeep.holla@arm.com>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"lenb@kernel.org" <lenb@kernel.org>
Subject: Re: [PATCH v4 1/2] ACPI/PPTT: Add support for ACPI 6.3 thread flag
Date: Wed, 21 Aug 2019 08:20:09 -0500 [thread overview]
Message-ID: <72ee16ea-1038-37a1-25b1-f28b5c6b6edb@arm.com> (raw)
In-Reply-To: <a2960c68-d422-3cdb-4354-6f357433ad6c@huawei.com>
Hi,
On 8/20/19 4:01 AM, John Garry wrote:
> On 12/08/2019 12:59, Will Deacon wrote:
>> On Mon, Aug 12, 2019 at 11:06:07AM +0200, Rafael J. Wysocki wrote:
>>> On Fri, Aug 9, 2019 at 12:25 AM Robert Richter <rrichter@marvell.com>
>>> wrote:
>>>>
>>>> On 08.08.19 15:40:06, Jeremy Linton wrote:
>>>>> ACPI 6.3 adds a flag to the CPU node to indicate whether
>>>>> the given PE is a thread. Add a function to return that
>>>>> information for a given linux logical CPU.
>>>>>
>>>>> Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
>>>>> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
>>>>> ---
>>>>> drivers/acpi/pptt.c | 53
>>>>> +++++++++++++++++++++++++++++++++++++++++++-
>>>>> include/linux/acpi.h | 5 +++++
>>>>> 2 files changed, 57 insertions(+), 1 deletion(-)
>>>>
>>>> Reviewed-by: Robert Richter <rrichter@marvell.com>
>>>
>>> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
>>>
>>> and please push it through ARM64 along with the second patch.
>>
>> Thanks. I'll push these into -next shortly.
>
>
> Hi Jeremy,
>
> We're considering requesting this support is backported to stable. We
> have a platform which incorrectly sets the MT bit. To update our
> firmware to PPTT v2, we need the kernel to support PPTT v2 also.
>
> Please let me know if you anticipate an issue in this.
No I don't see any issues with that once it lands.
I believe the ball is rolling in the case of some older distro kernel's
as well.
Thanks,
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next prev parent reply other threads:[~2019-08-21 13:20 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-08 20:40 [PATCH v4 0/2] arm64/PPTT ACPI 6.3 thread flag support Jeremy Linton
2019-08-08 20:40 ` [PATCH v4 1/2] ACPI/PPTT: Add support for ACPI 6.3 thread flag Jeremy Linton
2019-08-08 22:25 ` Robert Richter
2019-08-12 9:06 ` Rafael J. Wysocki
2019-08-12 11:59 ` Will Deacon
2019-08-20 9:01 ` John Garry
2019-08-21 13:20 ` Jeremy Linton [this message]
2019-08-21 13:25 ` John Garry
2019-08-08 20:40 ` [PATCH v4 2/2] arm64: topology: Use PPTT to determine if PE is a thread Jeremy Linton
2019-08-08 22:23 ` Robert Richter
-- strict thread matches above, loose matches on Subject: below --
2019-08-01 3:46 [PATCH v4 0/2] arm64/PPTT ACPI 6.3 thread flag support Jeremy Linton
2019-08-01 3:46 ` [PATCH v4 1/2] ACPI/PPTT: Add support for ACPI 6.3 thread flag Jeremy Linton
2019-08-01 15:57 ` Sudeep Holla
2019-08-01 16:10 ` Jeremy Linton
2019-08-02 13:05 ` Robert Richter
2019-08-02 15:36 ` Jeremy Linton
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