Messages in this thread | | | Date | Wed, 5 Jun 2019 18:17:09 +0300 | From | Jarkko Sakkinen <> | Subject | Re: [RFC PATCH 2/9] x86/sgx: Do not naturally align MAP_FIXED address |
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On Tue, Jun 04, 2019 at 10:10:22PM +0000, Xing, Cedric wrote: > A bit off topic here. This mmap()/mprotect() discussion reminds me a > question (guess for Jarkko): Now that vma->vm_file->private_data keeps > a pointer to the enclave, why do we store it again in vma->vm_private? > It isn't a big deal but non-NULL vm_private does prevent mprotect() > from merging adjacent VMAs.
Same semantics as with a regular mmap i.e. you can close the file and still use the mapping.
/Jarkko
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