On Wed, 14 Sep 2022 21:22:33 -0500, Zhiquan Li <zhiquan1.li@xxxxxxxxx>
wrote:
On 2022/9/14 23:46, Haitao Huang wrote:
Maybe it's just me missing some prior knowledge. It's not obvious to me
why you don't need any guard accessing the encl_owner field in ksgxd
thread. Is it because all vepc pages are never put in the active list
and encl_owner would never be null for all pages in that list?
Yes, all vepc pages are never put in the active list. The SGX core page
reclaimer doesn’t support reclaiming EPC pages allocated to KVM guests
through the virtual EPC driver.
Regardless, could you add a few sentence here to to make the rule
explicit?
More details please see the section "Virtual EPC" at
Documentation/x86/sgx.rst.
Thanks for pointing to that.
Haitao
