Re: [PATCH v6 11/18] nitro_enclaves: Add logic for setting an enclave memory region

From: Alexander Graf
Date: Mon Aug 10 2020 - 05:54:43 EST




On 05.08.20 11:10, Andra Paraschiv wrote:
Another resource that is being set for an enclave is memory. User space
memory regions, that need to be backed by contiguous memory regions,
are associated with the enclave.

One solution for allocating / reserving contiguous memory regions, that
is used for integration, is hugetlbfs. The user space process that is
associated with the enclave passes to the driver these memory regions.

The enclave memory regions need to be from the same NUMA node as the
enclave CPUs.

Add ioctl command logic for setting user space memory region for an
enclave.

Signed-off-by: Alexandru Vasile <lexnv@xxxxxxxxxx>
Signed-off-by: Andra Paraschiv <andraprs@xxxxxxxxxx>

Reviewed-by: Alexander Graf <graf@xxxxxxxxxx>


Alex



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