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Re: [PATCH v2 1/6] KVM: arm/arm64: arch_timer: Gather KVM specific information in a structure

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Hello Wei,

On 19/02/16 07:24, Wei Huang wrote:
> On 02/11/2016 09:33 AM, Julien Grall wrote:

[...]

>> This is also dropping arch_timer_get_timecounter as it was only used by
>> the KVM code. Furthermore, a stub for the new helper hasn't been
>> introduced because KVM is requiring the arch timer for both ARM64 and
>> ARM32.


[...]

>> -static inline struct timecounter *arch_timer_get_timecounter(void)
>> -{
>> -    return NULL;
>> -}
>> -
>
> Most parts are OK. Regarding removing this function from the #else area,
> is there a possibility to have CONFIG_ARM_ARCH_TIMER=n and CONFIG_KVM=y.
> If so, will the compilation fails here?

This patch is removing arch_timer_get_timecounter. So it's normal to
drop the stub in the #else area.

Furthermore, as mentioned in the commit message, I didn't add a stub for
the new function because KVM mandates the arch timer for both ARM64 and
ARM32.

Regards,

--
Julien Grall
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[PATCH v2 0/6] arm64: Add support of KVM with ACPI Julien Grall <julien.grall@arm.com> - 2016-02-11 16:40 +0100
  [PATCH v2 3/6] irqchip/gic-v2: Gather ACPI specific data in a single structure Julien Grall <julien.grall@arm.com> - 2016-02-11 16:40 +0100
  [PATCH v2 5/6] irqchip/gic-v3: Parse and export virtual GIC information Julien Grall <julien.grall@arm.com> - 2016-02-11 16:40 +0100
  [PATCH v2 1/6] KVM: arm/arm64: arch_timer: Gather KVM specific information in a structure Julien Grall <julien.grall@arm.com> - 2016-02-11 16:40 +0100
    Re: [PATCH v2 1/6] KVM: arm/arm64: arch_timer: Gather KVM specific  information in a structure Wei Huang <wei@redhat.com> - 2016-02-19 08:30 +0100
      Re: [PATCH v2 1/6] KVM: arm/arm64: arch_timer: Gather KVM specific  information in a structure Julien Grall <julien.grall@arm.com> - 2016-02-19 12:00 +0100
        Re: [PATCH v2 1/6] KVM: arm/arm64: arch_timer: Gather KVM specific  information in a structure Julien Grall <julien.grall@arm.com> - 2016-02-19 12:50 +0100
      Re: [PATCH v2 1/6] KVM: arm/arm64: arch_timer: Gather KVM specific  information in a structure Marc Zyngier <marc.zyngier@arm.com> - 2016-02-19 13:00 +0100
  [PATCH v2 6/6] KVM: arm/arm64: vgic: Rely on the GIC driver to parse the firmware tables Julien Grall <julien.grall@arm.com> - 2016-02-11 16:40 +0100
  [PATCH v2 2/6] KVM: arm/arm64: arch_timer: Rely on the arch timer to parse the firmware tables Julien Grall <julien.grall@arm.com> - 2016-02-11 16:40 +0100
  [PATCH v2 4/6] irqchip/gic-v2: Parse and export virtual GIC information Julien Grall <julien.grall@arm.com> - 2016-02-11 16:40 +0100
  Re: [PATCH v2 0/6] arm64: Add support of KVM with ACPI Wei Huang <wei@redhat.com> - 2016-02-19 07:40 +0100

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