From: okaya@codeaurora.org
To: Christoph Hellwig <hch@infradead.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-pci@vger.kernel.org, timur@codeaurora.org,
linux-arm-msm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Jonathan Corbet <corbet@lwn.net>,
Bjorn Helgaas <bhelgaas@google.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>,
Christoffer Dall <cdall@linaro.org>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Marc Zyngier <marc.zyngier@arm.com>,
Kai-Heng Feng <kai.heng.feng@canonical.com>,
Thymo van Beers <thymovanbeers@gmail.com>,
Frederic Weisbecker <frederic@kernel.org>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
David Rientjes <rientjes@google.com>,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
Keith Busch <keith.busch@intel.com>, Dongdong Liu <liu>
Subject: Re: [PATCH] PCI: Add pci=safemode option
Date: Wed, 30 May 2018 00:44:29 -0700 [thread overview]
Message-ID: <6dfe2db8f974d94c9867f30ec83d9333@codeaurora.org> (raw)
In-Reply-To: <20180530073735.GA28793@infradead.org>
On 2018-05-30 00:37, Christoph Hellwig wrote:
> On Tue, May 29, 2018 at 09:41:33PM -0700, Sinan Kaya wrote:
>> Bjorn and I discussed the need for such a "safe" mode feature when you
>> want to bring up PCI for a platform. You want to turn off everything
>> as
>> a starter and just stick to bare minimum.
>
> Can we please make it a config option the instead of adding code
> to every kernel? Also maybe the bringup should be in the name
> to make this more clear?
One other requirement was to have a runtime option rather than compile
time option.
When someone reported a problem, we wanted to be able to say "use this
option and see if system boots" without doing any bisects or
recompilation.
This would be the first step in troubleshooting a system to see if
fundamental features are working.
I don't mind changing the name
Bjorn mentioned safe option. I made it safemode. I am looking at Bjorn
for suggestions at this moment.
WARNING: multiple messages have this Message-ID (diff)
From: okaya@codeaurora.org
To: Christoph Hellwig <hch@infradead.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-pci@vger.kernel.org, timur@codeaurora.org,
linux-arm-msm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Jonathan Corbet <corbet@lwn.net>,
Bjorn Helgaas <bhelgaas@google.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>,
Christoffer Dall <cdall@linaro.org>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Marc Zyngier <marc.zyngier@arm.com>,
Kai-Heng Feng <kai.heng.feng@canonical.com>,
Thymo van Beers <thymovanbeers@gmail.com>,
Frederic Weisbecker <frederic@kernel.org>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
David Rientjes <rientjes@google.com>,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
Keith Busch <keith.busch@intel.com>,
Dongdong Liu <liudongdong3@huawei.com>,
Frederick Lawler <fred@fredlawl.com>,
Oza Pawandeep <poza@codeaurora.org>,
Gabriele Paoloni <gabriele.paoloni@huawei.com>,
"open list:DOCUMENTATION" <linux-doc@vger.kernel.org>,
open list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] PCI: Add pci=safemode option
Date: Wed, 30 May 2018 00:44:29 -0700 [thread overview]
Message-ID: <6dfe2db8f974d94c9867f30ec83d9333@codeaurora.org> (raw)
In-Reply-To: <20180530073735.GA28793@infradead.org>
On 2018-05-30 00:37, Christoph Hellwig wrote:
> On Tue, May 29, 2018 at 09:41:33PM -0700, Sinan Kaya wrote:
>> Bjorn and I discussed the need for such a "safe" mode feature when you
>> want to bring up PCI for a platform. You want to turn off everything
>> as
>> a starter and just stick to bare minimum.
>
> Can we please make it a config option the instead of adding code
> to every kernel? Also maybe the bringup should be in the name
> to make this more clear?
One other requirement was to have a runtime option rather than compile
time option.
When someone reported a problem, we wanted to be able to say "use this
option and see if system boots" without doing any bisects or
recompilation.
This would be the first step in troubleshooting a system to see if
fundamental features are working.
I don't mind changing the name
Bjorn mentioned safe option. I made it safemode. I am looking at Bjorn
for suggestions at this moment.
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WARNING: multiple messages have this Message-ID (diff)
From: okaya@codeaurora.org
To: Christoph Hellwig <hch@infradead.org>
Cc: Gabriele Paoloni <gabriele.paoloni@huawei.com>,
"open list:DOCUMENTATION" <linux-doc@vger.kernel.org>,
linux-pci@vger.kernel.org, Keith Busch <keith.busch@intel.com>,
Kai-Heng Feng <kai.heng.feng@canonical.com>,
Ingo Molnar <mingo@kernel.org>,
Christoffer Dall <cdall@linaro.org>,
Jonathan Corbet <corbet@lwn.net>,
timur@codeaurora.org,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
Dongdong Liu <liudongdong3@huawei.com>,
David Rientjes <rientjes@google.com>,
Thymo van Beers <thymovanbeers@gmail.com>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Frederick Lawler <fred@fredlawl.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Marc Zyngier <marc.zyngier@arm.com>,
linux-arm-msm@vger.kernel.org,
Frederic Weisbecker <frederic@kernel.org>,
Bjorn Helgaas <bhelgaas@google.com>,
Thomas Gleixner <tglx@linutronix.de>,
linux-arm-kernel@lists.infradead.org,
Oza Pawandeep <poza@codeaurora.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
open list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] PCI: Add pci=safemode option
Date: Wed, 30 May 2018 00:44:29 -0700 [thread overview]
Message-ID: <6dfe2db8f974d94c9867f30ec83d9333@codeaurora.org> (raw)
In-Reply-To: <20180530073735.GA28793@infradead.org>
On 2018-05-30 00:37, Christoph Hellwig wrote:
> On Tue, May 29, 2018 at 09:41:33PM -0700, Sinan Kaya wrote:
>> Bjorn and I discussed the need for such a "safe" mode feature when you
>> want to bring up PCI for a platform. You want to turn off everything
>> as
>> a starter and just stick to bare minimum.
>
> Can we please make it a config option the instead of adding code
> to every kernel? Also maybe the bringup should be in the name
> to make this more clear?
One other requirement was to have a runtime option rather than compile
time option.
When someone reported a problem, we wanted to be able to say "use this
option and see if system boots" without doing any bisects or
recompilation.
This would be the first step in troubleshooting a system to see if
fundamental features are working.
I don't mind changing the name
Bjorn mentioned safe option. I made it safemode. I am looking at Bjorn
for suggestions at this moment.
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
WARNING: multiple messages have this Message-ID (diff)
From: okaya@codeaurora.org (okaya at codeaurora.org)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] PCI: Add pci=safemode option
Date: Wed, 30 May 2018 00:44:29 -0700 [thread overview]
Message-ID: <6dfe2db8f974d94c9867f30ec83d9333@codeaurora.org> (raw)
In-Reply-To: <20180530073735.GA28793@infradead.org>
On 2018-05-30 00:37, Christoph Hellwig wrote:
> On Tue, May 29, 2018 at 09:41:33PM -0700, Sinan Kaya wrote:
>> Bjorn and I discussed the need for such a "safe" mode feature when you
>> want to bring up PCI for a platform. You want to turn off everything
>> as
>> a starter and just stick to bare minimum.
>
> Can we please make it a config option the instead of adding code
> to every kernel? Also maybe the bringup should be in the name
> to make this more clear?
One other requirement was to have a runtime option rather than compile
time option.
When someone reported a problem, we wanted to be able to say "use this
option and see if system boots" without doing any bisects or
recompilation.
This would be the first step in troubleshooting a system to see if
fundamental features are working.
I don't mind changing the name
Bjorn mentioned safe option. I made it safemode. I am looking at Bjorn
for suggestions at this moment.
WARNING: multiple messages have this Message-ID (diff)
From: okaya@codeaurora.org
To: Christoph Hellwig <hch@infradead.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-pci@vger.kernel.org, timur@codeaurora.org,
linux-arm-msm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Jonathan Corbet <corbet@lwn.net>,
Bjorn Helgaas <bhelgaas@google.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>,
Christoffer Dall <cdall@linaro.org>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Marc Zyngier <marc.zyngier@arm.com>,
Kai-Heng Feng <kai.heng.feng@canonical.com>,
Thymo van Beers <thymovanbeers@gmail.com>,
Frederic Weisbecker <frederic@kernel.org>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
David Rientjes <rientjes@google.com>,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
Keith Busch <keith.busch@intel.com>,
Dongdong Liu <liudongdong3@huawei.com>,
Frederick Lawler <fred@fredlawl.com>,
Oza Pawandeep <poza@codeaurora.org>,
Gabriele Paoloni <gabriele.paoloni@huawei.com>,
"open list:DOCUMENTATION" <linux-doc@vger.kernel.org>,
open list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] PCI: Add pci=safemode option
Date: Wed, 30 May 2018 00:44:29 -0700 [thread overview]
Message-ID: <6dfe2db8f974d94c9867f30ec83d9333@codeaurora.org> (raw)
In-Reply-To: <20180530073735.GA28793@infradead.org>
On 2018-05-30 00:37, Christoph Hellwig wrote:
> On Tue, May 29, 2018 at 09:41:33PM -0700, Sinan Kaya wrote:
>> Bjorn and I discussed the need for such a "safe" mode feature when you
>> want to bring up PCI for a platform. You want to turn off everything
>> as
>> a starter and just stick to bare minimum.
>
> Can we please make it a config option the instead of adding code
> to every kernel? Also maybe the bringup should be in the name
> to make this more clear?
One other requirement was to have a runtime option rather than compile
time option.
When someone reported a problem, we wanted to be able to say "use this
option and see if system boots" without doing any bisects or
recompilation.
This would be the first step in troubleshooting a system to see if
fundamental features are working.
I don't mind changing the name
Bjorn mentioned safe option. I made it safemode. I am looking at Bjorn
for suggestions at this moment.
next prev parent reply other threads:[~2018-05-30 7:44 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-30 3:19 [PATCH] PCI: Add pci=safemode option Sinan Kaya
2018-05-30 3:19 ` Sinan Kaya
2018-05-30 3:19 ` Sinan Kaya
2018-05-30 3:19 ` Sinan Kaya
2018-05-30 3:19 ` Sinan Kaya
2018-05-30 4:31 ` Greg Kroah-Hartman
2018-05-30 4:31 ` Greg Kroah-Hartman
2018-05-30 4:31 ` Greg Kroah-Hartman
2018-05-30 4:31 ` Greg Kroah-Hartman
2018-05-30 4:31 ` Greg Kroah-Hartman
2018-05-30 4:41 ` Sinan Kaya
2018-05-30 4:41 ` Sinan Kaya
2018-05-30 4:41 ` Sinan Kaya
2018-05-30 4:41 ` Sinan Kaya
2018-05-30 4:41 ` Sinan Kaya
2018-05-30 4:55 ` Greg Kroah-Hartman
2018-05-30 4:55 ` Greg Kroah-Hartman
2018-05-30 4:55 ` Greg Kroah-Hartman
2018-05-30 4:55 ` Greg Kroah-Hartman
2018-05-30 4:55 ` Greg Kroah-Hartman
2018-05-30 7:37 ` Christoph Hellwig
2018-05-30 7:37 ` Christoph Hellwig
2018-05-30 7:37 ` Christoph Hellwig
2018-05-30 7:37 ` Christoph Hellwig
2018-05-30 7:37 ` Christoph Hellwig
2018-05-30 7:44 ` okaya [this message]
2018-05-30 7:44 ` okaya
2018-05-30 7:44 ` okaya at codeaurora.org
2018-05-30 7:44 ` okaya
2018-05-30 7:44 ` okaya
2018-05-30 7:48 ` Greg Kroah-Hartman
2018-05-30 7:48 ` Greg Kroah-Hartman
2018-05-30 7:48 ` Greg Kroah-Hartman
2018-05-30 7:48 ` Greg Kroah-Hartman
2018-05-30 7:48 ` Greg Kroah-Hartman
2018-05-30 7:56 ` okaya
2018-05-30 7:56 ` okaya
2018-05-30 7:56 ` okaya at codeaurora.org
2018-05-30 7:56 ` okaya
2018-05-30 7:56 ` okaya
2018-05-30 8:22 ` okaya
2018-05-30 8:22 ` okaya
2018-05-30 8:22 ` okaya at codeaurora.org
2018-05-30 8:22 ` okaya
2018-05-30 8:22 ` okaya
2018-05-30 14:56 ` Bjorn Helgaas
2018-05-30 14:56 ` Bjorn Helgaas
2018-05-30 14:56 ` Bjorn Helgaas
2018-05-30 14:56 ` Bjorn Helgaas
2018-05-30 14:56 ` Bjorn Helgaas
2018-05-30 15:28 ` Sinan Kaya
2018-05-30 15:28 ` Sinan Kaya
2018-05-30 15:28 ` Sinan Kaya
2018-05-30 15:28 ` Sinan Kaya
2018-06-02 17:43 ` Pavel Machek
2018-06-02 17:43 ` Pavel Machek
2018-06-02 17:43 ` Pavel Machek
2018-06-02 17:43 ` Pavel Machek
2018-06-02 17:57 ` okaya
2018-06-02 17:57 ` okaya
2018-06-02 17:57 ` okaya at codeaurora.org
2018-06-02 17:57 ` okaya
2018-06-02 17:57 ` okaya
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