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RE: [Xen-devel] [PATCH] TSC scaling for live migration between platforms

To: Tim Deegan <Tim.Deegan@xxxxxxxxxx>, Patrick Colp <pjcolp@xxxxxxxxx>
Subject: RE: [Xen-devel] [PATCH] TSC scaling for live migration between platforms with different TSC frequecies
From: "Zhang, Xiantao" <xiantao.zhang@xxxxxxxxx>
Date: Thu, 18 Jun 2009 17:47:16 +0800
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Cc: Keir, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Fraser <Keir.Fraser@xxxxxxxxxxxxx>
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Thread-topic: [Xen-devel] [PATCH] TSC scaling for live migration between platforms with different TSC frequecies
Tim Deegan wrote:
> At 10:10 +0100 on 18 Jun (1245319857), Patrick Colp wrote:
>>> +        printk("Migrate to a platform with different freq:%ldMhz, "
>>> +            "expected freq:%dMhz, enable rdtsc exiting!\n",
>>> +                    cpu_khz / 1000, hdr->gtsc_khz / 1000);
>> 
>> Being pedantic, this should probably be:
>> 
>>      printk("Migrate to a platform with different freq: %ldMHz, "
>>             "expected freq: %dMHz, enable rdtsc exiting!\n",
>>              cpu_khz / 1000, hdr->gtsc_khz / 1000);
> 
> Being _pedantic_, it should be
> 
>       gdprintk(XENLOG_INFO, "Loaded VM expects a %"PRIu32"MHz TSC "
>                "but CPU is %ldMHz; enabling RDTSC exiting.\n",
>                hdr->gtsc_khz / 1000, cpu_khz / 1000); 

It maybe wonderful to add VM info (eg. Domain id) as Jan says in another mail. 
Thanks for your suggestions! I will change it in the final version!  :-)
Xiantao


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