Messages in this thread | | | Date | Mon, 13 Dec 2021 14:11:26 -0800 | Subject | Re: [PATCH 07/25] x86/sgx: Move PTE zap code to separate function | From | Reinette Chatre <> |
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Hi Jarkko,
On 12/10/2021 11:52 PM, Jarkko Sakkinen wrote: > 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.
Are you saying that modification of EPCM page permissions is not a reason to remove page table entries pointing to those pages?
Reinette
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