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Re: [PATCH v4 3/3] x86: Align output sections for UEFI CA memory mitigation requirements
- To: Frediano Ziglio <frediano.ziglio@xxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 24 Sep 2024 15:27:41 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Tue, 24 Sep 2024 13:27:47 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 24.09.2024 14:22, Frediano Ziglio wrote:
> On Tue, Sep 24, 2024 at 1:17 PM Jan Beulich <jbeulich@xxxxxxxx> wrote:
>>
>> On 24.09.2024 13:09, Jan Beulich wrote:
>>> On 24.09.2024 12:22, Frediano Ziglio wrote:
>>>> 4- .rodata for some reason is not marked as READONLY, even on ELF you
>>>> get the same issue.
>>>
>>> I can confirm this oddity, without having an explanation. It must be
>>> one of the inputs; I've checked that prelink.o's .rodata is r/o. So it
>>> can only be some other constituent.
>>
>> That's from .data.ro_after_init and .data.rel.ro*.
>
> That makes sense.
> On a similar note, what about .text? I mean, all sections are READONLY
> (or at least from mapfile) but .text is not marked as READONLY.
Can't spot anything for now.
Jan
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