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/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (C) 2020-2021 ARM Ltd. */ #ifndef __ASM_KVM_MTE_H #define __ASM_KVM_MTE_H #ifdef __ASSEMBLY__ #include #ifdef CONFIG_ARM64_MTE .macro mte_switch_to_guest g_ctxt, h_ctxt, reg1 alternative_if_not ARM64_MTE b .L__skip_switch\@ alternative_else_nop_endif mrs \reg1, hcr_el2 tbz \reg1, #(HCR_ATA_SHIFT), .L__skip_switch\@ mrs_s \reg1, SYS_RGSR_EL1 str \reg1, [\h_ctxt, #CPU_RGSR_EL1] mrs_s \reg1, SYS_GCR_EL1 str \reg1, [\h_ctxt, #CPU_GCR_EL1] ldr \reg1, [\g_ctxt, #CPU_RGSR_EL1] msr_s SYS_RGSR_EL1, \reg1 ldr \reg1, [\g_ctxt, #CPU_GCR_EL1] msr_s SYS_GCR_EL1, \reg1 .L__skip_switch\@: .endm .macro mte_switch_to_hyp g_ctxt, h_ctxt, reg1 alternative_if_not ARM64_MTE b .L__skip_switch\@ alternative_else_nop_endif mrs \reg1, hcr_el2 tbz \reg1, #(HCR_ATA_SHIFT), .L__skip_switch\@ mrs_s \reg1, SYS_RGSR_EL1 str \reg1, [\g_ctxt, #CPU_RGSR_EL1] mrs_s \reg1, SYS_GCR_EL1 str \reg1, [\g_ctxt, #CPU_GCR_EL1] ldr \reg1, [\h_ctxt, #CPU_RGSR_EL1] msr