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Re: [PATCH v1 1/5] console: add relocation hook
- To: Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Fri, 6 Jun 2025 08:26:33 +0200
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- Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Delivery-date: Fri, 06 Jun 2025 06:26:50 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 05.06.2025 18:08, Marek Marczykowski-Górecki wrote:
> On Thu, Jun 05, 2025 at 06:05:02PM +0200, Jan Beulich wrote:
>> On 05.06.2025 16:51, Marek Marczykowski-Górecki wrote:
>>> On Thu, Jun 05, 2025 at 04:42:53PM +0200, Jan Beulich wrote:
>>>> Why is it that this ring is dependent upon Xen's position? If the ring was
>>>> dynamically allocated, it wouldn't change position when Xen is moved.
>>>
>>> The console is setup quite early, I don't think I can allocate memory at
>>> this stage, no?
>>
>> But you allocate before Xen is moved, I suppose.
>
> Well, I have those buffers in BSS exactly to avoid the need to allocate
> them (or rather: have bootloader allocate them for me).
Yet them remaining in .bss is now getting in the way. Imo moving them to
.init.* and adding proper allocation is going to be easier than the hook-
ary you are proposing.
Jan
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