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Re: [PATCH 3/3] livepatch: correctly handle altinstruction sections
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Date: Tue, 15 Mar 2022 16:41:07 +0100
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- Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>, <doebel@xxxxxxxxx>
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Thu, Mar 10, 2022 at 04:08:34PM +0100, Roger Pau Monne wrote:
> The current handling of altinstructions sections by the livepatch
> tools is incorrect, as on Xen those sections are part of .init and
> thus discarded after load. Correctly handle them by just ignoring, as
> it's done with other .init related sections.
I think my logic here is wrong.
While looking at something else I realized that livepatch does support
'.altinstructions', as it needs to be able to patch the contents of
the payload that is being loaded - hence ignoring any '.altintr*'
section at patch generation is not OK.
I have to withdraw this patch, will likely repost with the other
sections that do need to be ignored.
Thanks, Roger.
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