[poky] [PATCH] genericx86: tune for i586 instead of atom

[Jonathan Liu]

Hi Bruce,

The kernel output is the following:
Loading /vmlinuz.........ready.
This kernel requires the following features not present on the CPU:
movbe
Unable to boot - please use a kernel appropriate for your CPU.

It stops at that stage and the kernel doesn't boot at all. I started
having this issue after switching my BSP to Linux 3.10.

Regards,
Jonathan

On 4 September 2013 13:23, Bruce Ashfield <bruce.ashfield at gmail.com> wrote:
> On Tue, Sep 3, 2013 at 9:43 PM, Jonathan Liu <net147 at gmail.com> wrote:
>> Tuning for Intel Atom CPU can in result instructions being used that are
>> not compatible with older x86 CPUs such as Intel Pentium Dual-Core
>> E2200. This can result in Linux 3.10 failing to boot with:
>> "This kernel requires the following features not present on the CPU:
>> movbe
>> Unable to boot - please use a kernel appropriate for your CPU.".
>
> That's a bit surprising, do you have a bootlog to share ? This tune
> file shouldn't
> impact the kernel build options, and if it is, that's a bug.
>
> If the error shows up on the switch to userspace, then that's a different story.
>
> Bruce
>
>>
>> Signed-off-by: Jonathan Liu <net147 at gmail.com>
>> ---
>>  meta-yocto-bsp/conf/machine/genericx86.conf | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/meta-yocto-bsp/conf/machine/genericx86.conf b/meta-yocto-bsp/conf/machine/genericx86.conf
>> index ff5cbc9..f5d9cd5 100644
>> --- a/meta-yocto-bsp/conf/machine/genericx86.conf
>> +++ b/meta-yocto-bsp/conf/machine/genericx86.conf
>> @@ -3,7 +3,7 @@
>>
>>  #@DESCRIPTION: Machine configuration for generic X86 (32-bit) PCs. Supports a moderately wide range of drivers that should boot and be usable on "typical" hardware.
>>
>> -include conf/machine/include/tune-atom.inc
>> +include conf/machine/include/tune-i586.inc
>>
>>  MACHINE_FEATURES = "screen keyboard pci usbhost ext2 ext3 x86 wifi acpi alsa"
>>
>> --
>> 1.8.4
>>
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>
>
>
> --
> "Thou shalt not follow the NULL pointer, for chaos and madness await
> thee at its end"