Re: [PATCH v10 00/21] Introduce ACPI for ARM64 based on ACPI 5.1

[Hanjun Guo]

On 2015/3/21 11:17, Hanjun Guo wrote:
> +CC Parth Dixit, Stefano Stabellini.
>
> On 2015å03æ21æ 02:54, Will Deacon wrote:
>> On Thu, Mar 19, 2015 at 04:09:33AM +0000, Hanjun Guo wrote:
>>> On 2015/3/19 3:05, Will Deacon wrote:
>>>> If you can get that in place, I'm not opposed to putting this into
>>>> linux-next ahead of the firmware summit in San Jose next week. Note that
>>>> this is not a commitment for 4.1, since I'm keen to see the outcomes of
>>>> next week before setting anything in stone.
>>>
>>> OK, I will stick to this mailing list and respond as soon as I can.
>>
>> This doesn't even build for me:
>>
>>
>> $ make ARCH=arm64 CROSS_COMPILE=aarch64-none-linux-gnu- allmodconfig
>> $ make ARCH=arm64 CROSS_COMPILE=aarch64-none-linux-gnu- Image
>>
>> [...]
>>
>> In file included from drivers/xen/acpi.c:33:0:
>
> Sorry, I didn't build ACPI with XEN enabled on ARM64.
>
>> include/xen/acpi.h: In function âxen_acpi_sleep_registerâ:
>> include/xen/acpi.h:102:3: error: âacpi_suspend_lowlevelâ undeclared (first use in this function)
>>     acpi_suspend_lowlevel = xen_acpi_suspend_lowlevel;
>
> acpi_suspend_lowlevel is defined only for X86 and IA64 for now.
>
>>     ^
>> include/xen/acpi.h:102:3: note: each undeclared identifier is reported only once for each function it appears in
>> drivers/xen/acpi.c: In function âxen_acpi_notify_hypervisor_stateâ:
>> drivers/xen/acpi.c:61:2: error: implicit declaration of function âHYPERVISOR_dom0_opâ [-Werror=implicit-function-declaration]
>>    HYPERVISOR_dom0_op(&op);
>
> And this is only for x86:
> ./arch/x86/include/asm/xen/hypercall.h:HYPERVISOR_dom0_op(struct xen_platform_op *platform_op)
>
>>    ^
>> cc1: some warnings being treated as errors
>> make[2]: *** [drivers/xen/acpi.o] Error 1
>> make[2]: *** Waiting for unfinished jobs....
>> make[1]: *** [drivers/xen] Error 2
>> make[1]: *** Waiting for unfinished jobs....
>> make: *** [drivers] Error 2
>>
>>
>> Am I missing some other patches?
>
> No, you miss nothing. Parth Dixit is still working on XEN ACPI for
> ARM64, before it's in full function, how about introduce a Kconfig
> CONFIG_XEN_ACPI and let it depends on x86? when XEN ACPI for ARM64
> comes, we can enable ARM64 for CONFIG_XEN_ACPI and fix the problems
> above.
>
> Stefano, Parth, what do you think?

I prepared a patch for further reference: