Modify sgx_init() to always try to initialize the virtual EPC driver, even if the bare-metal SGX driver is disabled. The bare-metal driver might be disabled if SGX Launch Control is in locked mode, or not supported in the hardware at all. This allows (non-Linux) guests that support non-LC configurations to use SGX. Signed-off-by: Kai Huang <kai.huang@xxxxxxxxx> --- arch/x86/kernel/cpu/sgx/main.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/cpu/sgx/main.c b/arch/x86/kernel/cpu/sgx/main.c index 5e20b42f2639..bdda631c975b 100644 --- a/arch/x86/kernel/cpu/sgx/main.c +++ b/arch/x86/kernel/cpu/sgx/main.c @@ -12,6 +12,7 @@ #include "driver.h" #include "encl.h" #include "encls.h" +#include "virt.h" struct sgx_epc_section sgx_epc_sections[SGX_MAX_EPC_SECTIONS]; static int sgx_nr_epc_sections; @@ -710,7 +711,8 @@ static void __init sgx_init(void) if (!sgx_page_reclaimer_init()) goto err_page_cache; - ret = sgx_drv_init(); + /* Success if the native *or* virtual EPC driver initialized cleanly. */ + ret = !!sgx_drv_init() & !!sgx_virt_epc_init(); if (ret) goto err_kthread; -- 2.29.2
