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Re: [PATCH 4/9] xen/arm: static memory initialization

On 05/07/2021 08:28, Penny Zheng wrote:
Hi Julien

Hi Penny,

-----Original Message-----
From: Julien Grall <julien@xxxxxxx>
Sent: Thursday, July 1, 2021 2:10 AM
To: Penny Zheng <Penny.Zheng@xxxxxxx>; xen-devel@xxxxxxxxxxxxxxxxxxxx;
sstabellini@xxxxxxxxxx; jbeulich@xxxxxxxx
Cc: Bertrand Marquis <Bertrand.Marquis@xxxxxxx>; Wei Chen
Subject: Re: [PATCH 4/9] xen/arm: static memory initialization

Hi Penny,

On 07/06/2021 03:43, Penny Zheng wrote:
This patch introduces static memory initialization, during system RAM boot

The word "RAM" looks spurious.

Thx. I check the "spurious" in dictionary, it means fake? So I will leave "during 
system boot up"

Yes, this reads better.

2. scrub the page in need synchronously.

Can you explain why this is necessary?

Since I'm borrowing the logic in free_heap_pages, I'm also trying to cover all 
the scenarios here like it does.
So I assume that free_staticmem_page will not only be used on initialization, 
but also when destroying/rebooting the domain.
On these cases, it is necessary to scrub the page, ig.

I wasn't asking about scrubbing specifically but instead why it is synchronous. Sorry for the confusion.


Julien Grall



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