On 27/08/2021 10:21, Stefano Garzarella wrote:
On Thu, Aug 26, 2021 at 08:34:50PM +0300, Andra Paraschiv wrote:
Add references for hugepages and booting steps for Arm.
Signed-off-by: Andra Paraschiv <andraprs@xxxxxxxxxx>
---
Documentation/virt/ne_overview.rst | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
If you need to respin, maybe we can add a little section with
supported architectures (x86, ARM64).
Sure, I can add this info.
Thanks, Stefano, for review and ack.
Andra
diff --git a/Documentation/virt/ne_overview.rst
b/Documentation/virt/ne_overview.rst
index 39b0c8fe2654a..2777da1fb0ad1 100644
--- a/Documentation/virt/ne_overview.rst
+++ b/Documentation/virt/ne_overview.rst
@@ -43,8 +43,8 @@ for the enclave VM. An enclave does not have
persistent storage attached.
The memory regions carved out of the primary VM and given to an
enclave need to
be aligned 2 MiB / 1 GiB physically contiguous memory regions (or
multiple of
this size e.g. 8 MiB). The memory can be allocated e.g. by using
hugetlbfs from
-user space [2][3]. The memory size for an enclave needs to be at
least 64 MiB.
-The enclave memory and CPUs need to be from the same NUMA node.
+user space [2][3][7]. The memory size for an enclave needs to be at
least
+64 MiB. The enclave memory and CPUs need to be from the same NUMA node.
An enclave runs on dedicated cores. CPU 0 and its CPU siblings need
to remain
available for the primary VM. A CPU pool has to be set for NE
purposes by an
@@ -61,7 +61,7 @@ device is placed in memory below the typical 4 GiB.
The application that runs in the enclave needs to be packaged in an
enclave
image together with the OS ( e.g. kernel, ramdisk, init ) that will
run in the
enclave VM. The enclave VM has its own kernel and follows the
standard Linux
-boot protocol [6].
+boot protocol [6][8].
The kernel bzImage, the kernel command line, the ramdisk(s) are part
of the
Enclave Image Format (EIF); plus an EIF header including metadata
such as magic
@@ -93,3 +93,5 @@ enclave process can exit.
[4]
https://www.kernel.org/doc/html/latest/admin-guide/kernel-parameters.html
[5] https://man7.org/linux/man-pages/man7/vsock.7.html
[6] https://www.kernel.org/doc/html/latest/x86/boot.html
+[7] https://www.kernel.org/doc/html/latest/arm64/hugetlbpage.html
+[8] https://www.kernel.org/doc/html/latest/arm64/booting.html
--
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