Re: [PATCH v13 09/13] x86/sgx: Enclave Page Cache (EPC) memory manager

From: Dave Hansen
Date: Mon Aug 27 2018 - 17:16:22 EST


On 08/27/2018 11:53 AM, Jarkko Sakkinen wrote:
> +struct sgx_epc_page_ops {
> + bool (*get)(struct sgx_epc_page *epc_page);
> + void (*put)(struct sgx_epc_page *epc_page);
> + bool (*reclaim)(struct sgx_epc_page *epc_page);
> + void (*block)(struct sgx_epc_page *epc_page);
> + void (*write)(struct sgx_epc_page *epc_page);
> +};

Why do we need a fancy, slow (retpoline'd) set of function pointers when
we only have one user of these (the SGX driver)?