linux-kernel - Re: [PATCH] ACPI / PPTT: get PPTT table in the first beginning

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Message-ID: <a1390a6f-62aa-4cfd-b34e-1dbf0aedfc50@huawei.com>
Date:   Wed, 1 Sep 2021 15:29:26 +0800
From:   Zenghui Yu <yuzenghui@...wei.com>
To:     Sudeep Holla <sudeep.holla@....com>
CC:     Xiongfeng Wang <wangxiongfeng2@...wei.com>,
        <catalin.marinas@....com>, <will@...nel.org>, <rjw@...ysocki.net>,
        <viresh.kumar@...aro.org>, <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linux-acpi@...r.kernel.org>,
        <guohanjun@...wei.com>
Subject: Re: [PATCH] ACPI / PPTT: get PPTT table in the first beginning

On 2021/7/20 21:37, Sudeep Holla wrote:
> On Tue, Jul 20, 2021 at 07:26:35PM +0800, Xiongfeng Wang wrote:
>> When I added might_sleep() in down_timeout(), I got the following
> 
> Sorry it is not clear if you are able to reproduce this issue without
> any other modifications in the mainline kernel ?

Jump in this thread as the exact splat is triggered at boot time
in the latest mainline kernel thanks to commit 99409b935c9a
("locking/semaphore: Add might_sleep() to down_*() family").