Messages in this thread | | | Subject | Re: [PATCH V2 16/32] x86/sgx: Support restricting of enclave page permissions | Date | Thu, 17 Mar 2022 09:47:36 -0500 | From | "Haitao Huang" <> |
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On Wed, 16 Mar 2022 23:37:26 -0500, Jarkko Sakkinen <jarkko@kernel.org> wrote:
> On Mon, Mar 14, 2022 at 10:39:36AM -0500, Haitao Huang wrote: >> I also see this model as consistent to what kernel does for regular >> memory >> mappings: adding physical pages on #PF or pre-fault and changing PTE >> permissions only after mprotect is called. > > And you were against this in EAUG's case. As in the EAUG's case > EMODPR could be done as part of the mprotect() flow. >
I preferred not automatic/unconditional EAUG during mmap. Here I think automatic/unconditional EMODPR(PROT_READ) on #PF would not work for all cases. See my reply to your other email.
Thanks Haitao
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