From: Juergen Gross <jgross@suse.com>
To: "Pali Rohár" <pali.rohar@gmail.com>,
"Guenter Roeck" <linux@roeck-us.net>
Cc: x86@kernel.org, jeremy@goop.org, jdelvare@suse.com,
peterz@infradead.org, akataria@vmware.com,
linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org, chrisw@sous-sol.org,
mingo@redhat.com, david.vrabel@citrix.com,
Douglas_Warzecha@dell.com, hpa@zytor.com,
xen-devel@lists.xenproject.org, boris.ostrovsky@oracle.com,
tglx@linutronix.de
Subject: Re: [PATCH v4 6/6] hwmon: use smp_call_on_cpu() for dell-smm i8k
Date: Thu, 21 Apr 2016 15:12:52 +0200 [thread overview]
Message-ID: <5718D1D4.3040309@suse.com> (raw)
In-Reply-To: <20160421105724.GK29406@pali>
On 21/04/16 12:57, Pali Rohár wrote:
> On Tuesday 05 April 2016 21:31:52 Pali Rohár wrote:
>> On Tuesday 05 April 2016 16:54:14 Guenter Roeck wrote:
>>> On Tue, Apr 05, 2016 at 07:10:07AM +0200, Juergen Gross wrote:
>>>> Use the smp_call_on_cpu() function to call system management
>>>> mode on cpu 0.
>>>> Make call secure by adding get_online_cpus() to avoid e.g. suspend
>>>> resume cycles in between.
>>>>
>>>> Signed-off-by: Juergen Gross <jgross@suse.com>
>>>> ---
>>>> V4: add call to get_online_cpus()
>>>
>>> Pali, any chance to test this ?
>>
>> I can test it, but just on machine where (probably) smm calls can be
>> send from any cpu... Need some time for testing and I believe I can do
>> that at the end of the week.
>
> Sorry I had absolutely no more free time last weekend :-( And same
> prediction is for this weekend and also next one...
Pali, I've got a Dell laptop (Latitude E6440) here. Would this device be
okay for a test? What would you do for testing? In case you can give me
some hints how to do a sensible test I'd do it.
I've verified by adding a printk() to smp_call_on_cpu() that at least
one of the modified drivers has been used during system boot.
Juergen
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WARNING: multiple messages have this Message-ID (diff)
From: Juergen Gross <jgross@suse.com>
To: "Pali Rohár" <pali.rohar@gmail.com>,
"Guenter Roeck" <linux@roeck-us.net>
Cc: linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org,
boris.ostrovsky@oracle.com, david.vrabel@citrix.com,
mingo@redhat.com, peterz@infradead.org,
Douglas_Warzecha@dell.com, jdelvare@suse.com, tglx@linutronix.de,
hpa@zytor.com, jeremy@goop.org, chrisw@sous-sol.org,
akataria@vmware.com, rusty@rustcorp.com.au,
virtualization@lists.linux-foundation.org, x86@kernel.org
Subject: Re: [PATCH v4 6/6] hwmon: use smp_call_on_cpu() for dell-smm i8k
Date: Thu, 21 Apr 2016 15:12:52 +0200 [thread overview]
Message-ID: <5718D1D4.3040309@suse.com> (raw)
In-Reply-To: <20160421105724.GK29406@pali>
On 21/04/16 12:57, Pali Rohár wrote:
> On Tuesday 05 April 2016 21:31:52 Pali Rohár wrote:
>> On Tuesday 05 April 2016 16:54:14 Guenter Roeck wrote:
>>> On Tue, Apr 05, 2016 at 07:10:07AM +0200, Juergen Gross wrote:
>>>> Use the smp_call_on_cpu() function to call system management
>>>> mode on cpu 0.
>>>> Make call secure by adding get_online_cpus() to avoid e.g. suspend
>>>> resume cycles in between.
>>>>
>>>> Signed-off-by: Juergen Gross <jgross@suse.com>
>>>> ---
>>>> V4: add call to get_online_cpus()
>>>
>>> Pali, any chance to test this ?
>>
>> I can test it, but just on machine where (probably) smm calls can be
>> send from any cpu... Need some time for testing and I believe I can do
>> that at the end of the week.
>
> Sorry I had absolutely no more free time last weekend :-( And same
> prediction is for this weekend and also next one...
Pali, I've got a Dell laptop (Latitude E6440) here. Would this device be
okay for a test? What would you do for testing? In case you can give me
some hints how to do a sensible test I'd do it.
I've verified by adding a printk() to smp_call_on_cpu() that at least
one of the modified drivers has been used during system boot.
Juergen
next prev parent reply other threads:[~2016-04-21 13:12 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-05 5:10 [PATCH v4 0/6] Support calling functions on dedicated physical cpu Juergen Gross
2016-04-05 5:10 ` Juergen Gross
2016-04-05 5:10 ` [PATCH v4 1/6] xen: sync xen header Juergen Gross
2016-04-05 5:10 ` Juergen Gross
2016-04-05 9:34 ` [Xen-devel] " David Vrabel
2016-04-05 9:34 ` David Vrabel
2016-04-05 9:34 ` David Vrabel
2016-04-05 5:10 ` Juergen Gross
2016-04-05 5:10 ` [PATCH v4 2/6] virt, sched: add generic vcpu pinning support Juergen Gross
2016-04-05 5:10 ` Juergen Gross
2016-04-05 5:10 ` Juergen Gross
2016-04-05 5:10 ` [PATCH v4 3/6] smp: add function to execute a function synchronously on a cpu Juergen Gross
2016-04-05 5:10 ` Juergen Gross
2016-04-05 8:11 ` Peter Zijlstra
2016-04-05 8:11 ` Peter Zijlstra
2016-04-05 8:11 ` Peter Zijlstra
2016-04-05 10:05 ` Juergen Gross
2016-04-05 10:05 ` Juergen Gross
2016-04-05 10:05 ` Juergen Gross
2016-04-05 5:10 ` Juergen Gross
2016-04-05 5:10 ` [PATCH v4 4/6] xen: add xen_pin_vcpu() to support calling functions on a dedicated pcpu Juergen Gross
2016-04-05 9:45 ` David Vrabel
2016-04-05 9:45 ` [Xen-devel] " David Vrabel
2016-04-05 9:45 ` David Vrabel
2016-04-05 10:01 ` Juergen Gross
2016-04-05 10:01 ` Juergen Gross
2016-04-05 10:03 ` David Vrabel
2016-04-05 10:03 ` David Vrabel
2016-04-05 10:03 ` David Vrabel
2016-04-05 10:01 ` Juergen Gross
2016-04-05 5:10 ` Juergen Gross
2016-04-05 5:10 ` Juergen Gross
2016-04-05 5:10 ` [PATCH v4 5/6] dcdbas: make use of smp_call_on_cpu() Juergen Gross
2016-04-05 5:10 ` Juergen Gross
2016-04-05 5:10 ` Juergen Gross
2016-04-05 5:10 ` [PATCH v4 6/6] hwmon: use smp_call_on_cpu() for dell-smm i8k Juergen Gross
2016-04-05 5:10 ` Juergen Gross
2016-04-05 5:10 ` Juergen Gross
2016-04-05 14:54 ` Guenter Roeck
2016-04-05 14:54 ` Guenter Roeck
2016-04-05 14:54 ` Guenter Roeck
2016-04-05 19:31 ` Pali Rohár
2016-04-05 19:31 ` Pali Rohár
2016-04-05 19:31 ` Pali Rohár
2016-04-21 10:57 ` Pali Rohár
2016-04-21 10:57 ` Pali Rohár
2016-04-21 13:12 ` Juergen Gross [this message]
2016-04-21 13:12 ` Juergen Gross
2016-04-21 13:27 ` Pali Rohár
2016-04-21 13:27 ` Pali Rohár
2016-05-09 14:37 ` Juergen Gross
2016-05-09 14:37 ` Juergen Gross
2016-05-12 8:51 ` Pali Rohár
2016-05-12 8:51 ` Pali Rohár
2016-05-12 8:51 ` Pali Rohár
2016-05-09 14:37 ` Juergen Gross
2016-04-21 13:27 ` Pali Rohár
2016-04-21 13:12 ` Juergen Gross
2016-04-21 10:57 ` Pali Rohár
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