From: Jia-Ju Bai <baijiaju1990@gmail.com>
To: KY Srinivasan <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>,
"bhelgaas@google.com" <bhelgaas@google.com>
Cc: "devel@linuxdriverproject.org" <devel@linuxdriverproject.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>
Subject: Re: [PATCH 1/2] pci: host: pci-hyperv: Replace GFP_ATOMIC with GFP_KERNEL in hv_pci_onchannelcallback
Date: Mon, 19 Mar 2018 11:44:11 +0800 [thread overview]
Message-ID: <c13413c3-67e2-fd1f-c8d0-28e810c6287b@gmail.com> (raw)
In-Reply-To: <SN6PR2101MB0893202C038AB406C6A6546BA0D40@SN6PR2101MB0893.namprd21.prod.outlook.com>
On 2018/3/19 10:52, KY Srinivasan wrote:
>
>> -----Original Message-----
>> From: Jia-Ju Bai <baijiaju1990@gmail.com>
>> Sent: Sunday, March 18, 2018 7:53 AM
>> To: KY Srinivasan <kys@microsoft.com>; Haiyang Zhang
>> <haiyangz@microsoft.com>; Stephen Hemminger
>> <sthemmin@microsoft.com>; bhelgaas@google.com
>> Cc: devel@linuxdriverproject.org; linux-pci@vger.kernel.org; linux-
>> kernel@vger.kernel.org; Jia-Ju Bai <baijiaju1990@gmail.com>
>> Subject: [PATCH 1/2] pci: host: pci-hyperv: Replace GFP_ATOMIC with
>> GFP_KERNEL in hv_pci_onchannelcallback
>>
>> hv_pci_onchannelcallback() is not called in atomic context.
>>
>> The call chain ending up at hv_pci_onchannelcallback() is:
>> [1] hv_pci_onchannelcallback() <- hv_pci_probe()
>> hv_pci_probe() is only set as ".probe" in hv_driver
>> structure "hv_pci_drv".
> This function is setup as the function to handle interrupts on the channel. Hence the
> need for GFP_ATOMIC.
>
Oh, sorry for my incorrect patch.
Thanks for your reply :)
Best wishes,
Jia-Ju Bai
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next prev parent reply other threads:[~2018-03-19 3:44 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-18 14:53 Jia-Ju Bai
2018-03-18 22:40 ` Michael Kelley (EOSG)
2018-03-19 2:52 ` KY Srinivasan
2018-03-19 3:44 ` Jia-Ju Bai [this message]
2018-03-19 8:38 ` Dan Carpenter
2018-03-19 8:53 ` Jia-Ju Bai
2018-03-19 10:29 ` Dan Carpenter
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