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Re: [Qemu-arm] [Qemu-devel] [RFC PATCH v1 4/4] target-arm: Compute page

From: Peter Maydell
Subject: Re: [Qemu-arm] [Qemu-devel] [RFC PATCH v1 4/4] target-arm: Compute page size based on ARM target cpu type
Date: Tue, 21 Jun 2016 12:55:19 +0100

On 17 June 2016 at 11:20, Vijay Kilari <address@hidden> wrote:
> On Fri, Jun 17, 2016 at 1:12 AM, Richard Henderson <address@hidden> wrote:
>> On 06/14/2016 04:36 AM, Peter Maydell wrote:
>>> It would be better to delay the point at which we allocate
>>> the data structures which care about page size, rather than
>>> moving init of the CPU earlier.
>> It would be *best* if we could re-initialize and re-allocate these data
>> structures so that we can follow the current page size as it changes.
>> Yes, this might require flushing just about everything, but it's the kind of
>> thing that's likely to happen only at system startup.  After that, everything
>> benefits from having the correct (larger) page size.
> I tried shuffling the memory initialization code after cpu initialization.
> but it was full mess. So could not proceed further.
> However, I tried early creation cpu objects instead of doing it from
> machvirt_init.

I'm going to have a go at this and see if I can come up with a
nice looking arrangement. Will try to send some patches by the
end of the week...

-- PMM

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