Commit c880881e authored by Huaxin Lu's avatar Huaxin Lu
Browse files

IMA: Check cvm world before call smc function 

EulerOS inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I9VSX2



------------------------------

Check the environment is in cvm world before call SMC function.
Because some hardware may not support SMC.

Fixes: b1410546 ("IMA: Support the measurement extending of TSI TMM")
Signed-off-by: default avatarHuaxin Lu <luhuaxin1@huawei.com>
parent bed797c8

security/integrity/ima/ima_cvm.c

+2 −1
Original line number Diff line number Diff line
@@ -3,6 +3,7 @@ 
 * Copyright (C) 2024. Huawei Technologies Co., Ltd. All rights reserved.

 */

#include <asm/cvm_smc.h>

#include <asm/cvm_guest.h>

#include "ima_cvm.h"



static bool ima_tsi_cvm;
@@ -16,7 +17,7 @@ int __init ima_cvm_init(void) 
{

	int rc = -ENODEV;



	if (tsi_get_version() != SMCCC_RET_NOT_SUPPORTED) {

	if (is_cvm_world() && tsi_get_version() != SMCCC_RET_NOT_SUPPORTED) {

		ima_tsi_cvm = true;

		rc = 0;

	}