Re: [PATCH 07/25] x86/sgx: Move PTE zap code to separate function

[Jarkko Sakkinen]

On Mon, 2021-12-06 at 13:30 -0800, Reinette Chatre wrote:
> Hi Jarkko,
> 
> On 12/4/2021 2:59 PM, Jarkko Sakkinen wrote:
> > On Wed, Dec 01, 2021 at 11:23:05AM -0800, Reinette Chatre wrote:
> > > The SGX reclaimer removes page table entries pointing to pages that are
> > > moved to swap. SGX2 enables changes to pages belonging to an initialized
> > > enclave, for example changing page permissions. Supporting SGX2 requires
> > > this ability to remove page table entries that is available in the
> > > SGX reclaimer code.
> > 
> > Missing: why SGX2 requirest this?
> 
> The above paragraph states that SGX2 needs to remove page table entries 
> because it modifies page permissions. Could you please elaborate what is 
> missing?

It does not say why SGX2 requires an ability to remove page table entries.

/Jarkko