Re: [PATCH V4 0/2] Add support for arm64 to carry ima measurement

[prsriva]

On 10/15/19 11:47 AM, Pavel Tatashin wrote:
> > I think the UEFI persistent-memory-reservations thing is a better fit for this [0][1].
>
> Hi James,
>
> Thank you for your thought. As I understand you propose the to use the
> existing method as such:
> 1. Use the existing kexec ABI to pass reservation from kernel to
> kernel using EFI the same as is done for GICv3 tables.
> 2. Allow this memory to be reservable only during first Linux boot via
> EFI memory reserve
> 3. Allow to have this memory pre-reserved by firmware or to be
> embedded into device tree.
>
> A question I have is how to tell that a reserved region is reserved
> for IMA use. With GICv3 it is done by reading the registers, finding
> the interrupt tables memory, and check that the memory ranges are
> indeed pre-reserved.
>
> Is there a way to name memory with the current ABI that you think is acceptable?
>
> Thank you,
> Pasha
Friendly ping.

Thanks,
Prakhar Srivastava