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Re: [PATCH v5 1/6] Revert "xen/x86: bzImage parse kernel_alignment"
- To: Jason Andryuk <jason.andryuk@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 27 Mar 2024 08:22:41 +0100
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Wed, 27 Mar 2024 07:22:50 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 26.03.2024 22:38, Jason Andryuk wrote:
> A new ELF note will specify the alignment for a relocatable PVH kernel.
> ELF notes are suitable for vmlinux and other ELF files, so this
> Linux-specific bzImage parsing in unnecessary.
>
> This reverts commit c44cac229067faeec8f49247d1cf281723ac2d40.
>
> Signed-off-by: Jason Andryuk <jason.andryuk@xxxxxxx>
Since you keep re-sending this: In private discussion Roger has indicated
that, like me, he too would prefer falling back to the ELF data, before
falling back to the arch default (Roger, please correct me if I got it
wrong). That would make it necessary that the change you're proposing to
revert here is actually kept.
Or wait - what you're reverting is taking the alignment out of the
bzImage header. I don't expect the BSDs to use that protocol; aiui that's
entirely Linux-specific.
I further meanwhile realized that consulting the ELF phdrs may also be
ambiguous, as there may be more than one. I guess it would need to be the
maximum of all of them then.
Jan
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