1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2012-2015 - ARM Ltd
4 * Author: Marc Zyngier <marc.zyngier@arm.com>
5 */
6
7#include <hyp/sysreg-sr.h>
8
9#include <linux/compiler.h>
10#include <linux/kvm_host.h>
11
12#include <asm/kprobes.h>
13#include <asm/kvm_asm.h>
14#include <asm/kvm_emulate.h>
15#include <asm/kvm_hyp.h>
16
17/*
18 * Non-VHE: Both host and guest must save everything.
19 */
20
21void __sysreg_save_state_nvhe(struct kvm_cpu_context *ctxt)
22{
23	__sysreg_save_el1_state(ctxt);
24	__sysreg_save_common_state(ctxt);
25	__sysreg_save_user_state(ctxt);
26	__sysreg_save_el2_return_state(ctxt);
27}
28
29void __sysreg_restore_state_nvhe(struct kvm_cpu_context *ctxt)
30{
31	__sysreg_restore_el1_state(ctxt);
32	__sysreg_restore_common_state(ctxt);
33	__sysreg_restore_user_state(ctxt);
34	__sysreg_restore_el2_return_state(ctxt);
35}
36
37void __kvm_enable_ssbs(void)
38{
39	u64 tmp;
40
41	asm volatile(
42	"mrs	%0, sctlr_el2\n"
43	"orr	%0, %0, %1\n"
44	"msr	sctlr_el2, %0"
45	: "=&r" (tmp) : "L" (SCTLR_ELx_DSSBS));
46}
47