Re: [PATCH v5 1/3] x86/sgx: Repurpose the owner field as the virtual address of virtual EPC page

Dave Hansen
2022-07-21T16:42:39Z

On 6/22/22 02:37, Zhiquan Li wrote:
> diff --git a/arch/x86/kernel/cpu/sgx/virt.c b/arch/x86/kernel/cpu/sgx/virt.c
> index 6a77a14eee38..776ae5c1c032 100644
> --- a/arch/x86/kernel/cpu/sgx/virt.c
> +++ b/arch/x86/kernel/cpu/sgx/virt.c
> @@ -46,10 +46,12 @@ static int __sgx_vepc_fault(struct sgx_vepc *vepc,
> if (epc_page)
> return 0;
>
> - epc_page = sgx_alloc_epc_page(vepc, false);
> + epc_page = sgx_alloc_epc_page((void *)addr, false);
> if (IS_ERR(epc_page))
> return PTR_ERR(epc_page);

Was the 'vepc' value simply unused before?