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RE: [Xen-devel][PATCH 3/5] Add cpufreq pwr mgmt to Xen


  • To: "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Liu, Jinsong" <jinsong.liu@xxxxxxxxx>
  • Date: Tue, 13 May 2008 17:34:34 +0800
  • Delivery-date: Tue, 13 May 2008 02:35:58 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: Aci0pum5DchKJJryTjCAyBnEoEeG2AAMDsoTAAEUb1A=
  • Thread-topic: [Xen-devel][PATCH 3/5] Add cpufreq pwr mgmt to Xen

Thanks Keir,

I will fix gcc-specific attributes in public header files ASAP.

I add a local variable 'a' in common/domain.c, since need to do '
xen_processor_pmbits &= (~a);'
If we directly use ' xen_processor_pmbits &= (~XEN_PROCESSOR_PM_PX)' may
result in some align issue if xen_processor_pmbits is not 32bits
variable.
So I add 'a' with same type as 'xen_processor_pmbits'.

Regards,
Jinsong

-----Original Message-----
From: Keir Fraser [mailto:keir.fraser@xxxxxxxxxxxxx] 
Sent: Tuesday, May 13, 2008 4:56 PM
To: Liu, Jinsong; xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel][PATCH 3/5] Add cpufreq pwr mgmt to Xen

On 13/5/08 04:10, "Liu, Jinsong" <jinsong.liu@xxxxxxxxx> wrote:

> Get ACPI Px from dom0 and chose Px controller
> 
> Add platform op hypercall case to get ACPI Px info from dom0.
> Chose Px controller from dom0 (cpufreq=dom0-kernel)
> or hypervisor (cpufreq=xen-cpufreq)

No gcc-specific attributes in the public header files. This means no
__attribute__((packed)). Please fix that.

Also why declare a local variable 'a' in your changes to
common/domain.c?

 -- Keir




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