linux-kernel - Re: linux-next: Tree for Nov 14

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Date:	Sun, 16 Nov 2014 16:37:41 +0800
From:	Jiang Liu <jiang.liu@...ux.intel.com>
To:	Guenter Roeck <linux@...ck-us.net>,
	Stephen Rothwell <sfr@...b.auug.org.au>
CC:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: linux-next: Tree for Nov 14



On 2014/11/16 16:24, Jiang Liu wrote:
> On 2014/11/16 14:56, Guenter Roeck wrote:
>> On 11/15/2014 08:20 PM, Jiang Liu wrote:
>>
>> I took the configuration file I had for the SMP case (located in the same
>> directory in the git repository), disabled SMP, and ran "make
>> savedefconfig".
>> "old" is relative in this context; I don't usually create new configuration
>> files for each new kernel release, so, yes, you could say that the file
>> I used is "old".
>>
>> CONFIG_X86_LOCAL_APIC is enabled. Keep in mind this is a configuration file
>> created with "make savedefconfig", so default settings are not included.
>> Correct, CONFIG_X86_IO_APIC is not enabled, but that is not really
>> surprising
>> since its dependencies are not met as far as I can see.
>>
>> Overall, I am not sure I understand what you are trying to say. X86_IO_APIC
>> depends on X86_64 (not set) or SMP (not set) or X86_32_NON_STANDARD (not
>> set)
>> or X86_UP_IOAPIC (not set because it depends on X86_UP_APIC which
>> depends on
>> !PCI_MSI).
>>
>> Does that mean that I'll have to disable PCI_MSI to get x86 uniprocessor
>> support to work after your patch ?
> Hi Guenter,
> 	Previously, X86_IO_APIC will be enabled if PCI_MSI is enabled.
> With my patch, x86_IO_APIC may be disabled even if PCI_MSI is enabled.
> If X86_LOCAL_APIC/PCI_MSI are enabled and X86_IO_APIC is disabled, it
> should work theoretically. I remember it works on my HP laptop.
> Could you please help to check whether it solve the issue by manually
> turning on X86_IO_APIC?
Or could you please help to apply this patch?
http://patchwork.ozlabs.org/patch/408402/

> Thanks!
> Gerry
> 
>>
>> Thanks,
>> Guenter
>>
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