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From: Jan Beulich <jbeulich@suse.com>
To: "Георгий Зайцев" <zaytsevgu@gmail.com>
Cc: xen-devel@lists.xen.org, Sergey Kovalev <valor@list.ru>
Subject: Re: Fwd: [BUG] Windows is frozen after restore from snapshot
Date: Fri, 23 Apr 2021 15:21:41 +0200	[thread overview]
Message-ID: <3fa1051f-705c-fdf9-272d-69dd9e7dc01d@suse.com> (raw)
In-Reply-To: <CADyHojEFuM8mrdyBpQCO+_OJsijfi6nR5YjbHxE3dkTqbAq23Q@mail.gmail.com>

On 23.04.2021 15:10, Георгий Зайцев wrote:
>>
>> Since
>> you've taken apart saved state, could you supply the full set of
>> values (ideally multiple ones, if you happen to have them, plus
>> ones where the problem didn't occur, to allow someone perhaps
>> spot a pattern)?
>>
> 
> Here is full HPET state from "frozen" snapshot according to hvm_hw_hpet
> structure:
> 
> capabiliy: f424008086a201
> res0: 0
> config: 3
> res1: 0
> isr: 0
> res2: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
> 0, 0]
> mc64: 97b90bc74
> res3: 0
> timer0:
>         config: f0000000002934
>         cmp: fd4aa84c
>         fsb: 0
>         res4: 0
> timer1:
>         config: f0000000000130
>         cmp: ffffffff
>         fsb: 0
>         res4: 0
> timer2:
>         config: f0000000000130
>         cmp: ffffffff
>         fsb: 0
>         res4: 0
> period[0] = ee6b2
> period[1] = 0
> period[2] = 0
> 
> This one taken from snapshot of "unfrozen" one:
> 
> capabiliy: f424008086a201
> res0: 0
> config: 3
> res1: 0
> isr: 0
> res2: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
> 0, 0]
> mc64: acbd23c57
> res3: 0
> timer0:
>         config: f000000000293c
>         cmp: acbd3761b
>         fsb: 0
>         res4: 0
> timer1:
>         config: f0000000000130
>         cmp: ffffffff
>         fsb: 0
>         res4: 0
> timer2:
>         config: f0000000000130
>         cmp: ffffffff
>         fsb: 0
>         res4: 0
> period[0] = ee6b2
> period[1] = 0
> period[2] = 0
> 
> The only difference is HPET_TN_PERIODIC flag for timers[0].config value

Thanks, but now I'll need to understand what your quoted "frozen" and
"unfrozen" mean. Plus obviously comparators and main counter are also
different, and it's there where I suspect the issue is.

Jan


  reply	other threads:[~2021-04-23 13:21 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <6237e102-f2cf-a66e-09b6-954ebfe28f8c@list.ru>
2021-04-23 10:22 ` Sergey Kovalev
2021-04-23 12:30   ` Jan Beulich
2021-04-23 12:55     ` Sergey Kovalev
2021-04-23 13:10       ` Георгий Зайцев
2021-04-23 13:21         ` Jan Beulich [this message]
2021-04-23 13:30           ` Георгий Зайцев
2021-04-23 13:40             ` Jan Beulich
2021-04-23 15:08   ` Roger Pau Monné
2021-04-23 16:19     ` Sergey Kovalev
2021-04-24  0:39       ` Tamas K Lengyel

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