Re: [patch v11 19/23] XEN / ACPI: Make XEN ACPI depend on X86

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On Tue, 24 Mar 2015, Boris Ostrovsky wrote:
> On 03/24/2015 10:02 AM, Hanjun Guo wrote:
> > When ACPI is enabled on ARM64, XEN ACPI will also compiled
> > into the kernel, but XEN ACPI is x86 dependent, so introduce
> > CONFIG_XEN_ACPI to make it depend on x86 before XEN ACPI is
> > functional on ARM64.
> > 
> > CC: 'Stefano Stabellini' <stefano.stabellini@xxxxxxxxxxxxx>
> > CC: Julien Grall <julien.grall@xxxxxxxxxx>
> > CC: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> > CC: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
> > CC: David Vrabel <david.vrabel@xxxxxxxxxx>
> > Signed-off-by: Hanjun Guo <hanjun.guo@xxxxxxxxxx>
> > ---
> >   drivers/xen/Kconfig  | 4 ++++
> >   drivers/xen/Makefile | 2 +-
> >   2 files changed, 5 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
> > index b812462..a31cd29 100644
> > --- a/drivers/xen/Kconfig
> > +++ b/drivers/xen/Kconfig
> > @@ -253,4 +253,8 @@ config XEN_EFI
> >   	def_bool y
> >   	depends on X86_64 && EFI
> >   +config XEN_ACPI
> > +	def_bool y
> > +	depends on X86 && ACPI
> > +
> 
> 
> I think XEN_DOM0 (in arch/x86/xen/Kconfig) should select this option.
> Otherwise, if it is set to 'n', we won't be able to build enlighten.c
> (xen_start_kernel() -> xen_acpi_sleep_register() refers to
> xen_acpi_notify_hypervisor_sleep()).
> 

I don't think that it is necessary: XEN_ACPI gets automatically enabled
anyway.


> >   endmenu
> > diff --git a/drivers/xen/Makefile b/drivers/xen/Makefile
> > index 2ccd359..f4622ab 100644
> > --- a/drivers/xen/Makefile
> > +++ b/drivers/xen/Makefile
> > @@ -13,7 +13,7 @@ CFLAGS_efi.o				+=
> > -fshort-wchar
> >     dom0-$(CONFIG_PCI) += pci.o
> >   dom0-$(CONFIG_USB_SUPPORT) += dbgp.o
> > -dom0-$(CONFIG_ACPI) += acpi.o $(xen-pad-y)
> > +dom0-$(CONFIG_XEN_ACPI) += acpi.o $(xen-pad-y)
> >   xen-pad-$(CONFIG_X86) += xen-acpi-pad.o
> >   dom0-$(CONFIG_X86) += pcpu.o
> >   obj-$(CONFIG_XEN_DOM0)			+= $(dom0-y)
> 
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