On Mon, Feb 01, 2021 at 09:26:51PM +0800, Tianjia Zhang wrote:
'section->free_cnt' represents the free page in sgx_epc_section, which is assigned once after initialization. In fact, just after the initialization is completed, the pages are in the init_laundry_list list and cannot be allocated. This needs to be recovered by EREMOVE of function sgx_sanitize_section() before it can be used as a page that can be allocated. The sgx_sanitize_section() will be called in the kernel thread ksgxd.
This patch moves the initialization of 'section->free_cnt' from the initialization function sgx_setup_epc_section() to the function sgx_sanitize_section(), and then accumulates the count after the successful execution of EREMOVE. This seems to be more reasonable, free_cnt will also truly reflect the allocatable free pages in EPC.
Sined-off-by: Tianjia Zhang tianjia.zhang@linux.alibaba.com Reviewed-by: Sean Christopherson seanjc@google.com
I just copy-paste my earlier response to save time sice you seem to save time by ignoring it and spamming with the same obviously illegit patch.
https://lore.kernel.org/linux-sgx/YBGlodsOaX4cWAtl@kernel.org/
/Jarkko