On 2014/11/16 16:24, Jiang Liu wrote:

On 2014/11/16 14:56, Guenter Roeck wrote:

quoted

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

quoted

Thanks,
Guenter

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