2021-05-26 19:09:36 +00:00
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2012-2015 - ARM Ltd
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* Author: Marc Zyngier <marc.zyngier@arm.com>
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*/
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#include <hyp/sysreg-sr.h>
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#include <linux/compiler.h>
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#include <linux/kvm_host.h>
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#include <asm/kprobes.h>
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#include <asm/kvm_asm.h>
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#include <asm/kvm_emulate.h>
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#include <asm/kvm_hyp.h>
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/*
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* Non-VHE: Both host and guest must save everything.
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*/
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void __sysreg_save_state_nvhe(struct kvm_cpu_context *ctxt)
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{
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__sysreg_save_el1_state(ctxt);
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__sysreg_save_common_state(ctxt);
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__sysreg_save_user_state(ctxt);
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__sysreg_save_el2_return_state(ctxt);
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}
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void __sysreg_restore_state_nvhe(struct kvm_cpu_context *ctxt)
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{
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__sysreg_restore_el1_state(ctxt);
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__sysreg_restore_common_state(ctxt);
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__sysreg_restore_user_state(ctxt);
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__sysreg_restore_el2_return_state(ctxt);
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}
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2021-09-23 16:59:15 +00:00
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void __kvm_enable_ssbs(void)
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{
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u64 tmp;
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asm volatile(
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"mrs %0, sctlr_el2\n"
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"orr %0, %0, %1\n"
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"msr sctlr_el2, %0"
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: "=&r" (tmp) : "L" (SCTLR_ELx_DSSBS));
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}
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