Re: SEV guest regression in 4.18

[Paolo Bonzini]

On 22/08/2018 22:11, Brijesh Singh wrote:
> 
> Yes, this is one of approach I have in mind. It will avoid splitting
> the larger pages; I am thinking that early in boot code we can lookup
> for this special section and decrypt it in-place and probably maps with
> C=0. Only downside, it will increase data section footprint a bit
> because we need to align this section to PM_SIZE.

If you can ensure it doesn't span a PMD, maybe it does not need to be
aligned; you could establish a C=0 mapping of the whole 2M around it.

Paolo