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Re: Xen XSM/FLASK policy, grub defaults, etc.

Hi Ian,

On 29/05/2020 15:47, Ian Jackson wrote:
George Dunlap writes ("Re: Xen XSM/FLASK policy, grub defaults, etc."):
Which isn’t to say we shouldn’t do it; but it might be nice to also have an 
intermediate solution that works right now, even if it’s not optimal.

I propose the following behaviour by updste-grub:

  1. Look for an ELF note, TBD.  If it's found, make XSM boot entries.
     (For now, skip this step, since the ELF note is not defined.)

I am afraid the ELF note is a very x86 thing. On Arm, we don't have such thing for the kernel/xen (actually the final binary is not even an ELF).

  2. Look for a .config alongside the Xen binary.  Look for
     If the file is is not found, or no line matches, make no XSM
     boot entries.

... this would probably be the best solution for Arm.


Julien Grall



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