2012-12-10 19:16:40 +08:00
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/*
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* Copyright (C) 2012,2013 - ARM Ltd
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* Author: Marc Zyngier <marc.zyngier@arm.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ARM_KVM_ASM_H__
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#define __ARM_KVM_ASM_H__
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2013-06-26 22:16:40 +08:00
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#include <asm/virt.h>
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2016-09-06 21:02:05 +08:00
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#define ARM_EXIT_WITH_SERROR_BIT 31
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#define ARM_EXCEPTION_CODE(x) ((x) & ~(1U << ARM_EXIT_WITH_SERROR_BIT))
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#define ARM_SERROR_PENDING(x) !!((x) & (1U << ARM_EXIT_WITH_SERROR_BIT))
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2012-12-10 19:16:40 +08:00
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#define ARM_EXCEPTION_IRQ 0
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2016-09-06 21:02:02 +08:00
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#define ARM_EXCEPTION_EL1_SERROR 1
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#define ARM_EXCEPTION_TRAP 2
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2016-04-28 00:47:04 +08:00
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/* The hyp-stub will return this for any kvm_call_hyp() call */
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2016-09-06 21:02:02 +08:00
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#define ARM_EXCEPTION_HYP_GONE 3
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2012-12-10 19:16:40 +08:00
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2014-04-24 17:24:46 +08:00
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#define KVM_ARM64_DEBUG_DIRTY_SHIFT 0
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#define KVM_ARM64_DEBUG_DIRTY (1 << KVM_ARM64_DEBUG_DIRTY_SHIFT)
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2016-03-19 01:25:59 +08:00
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#define kvm_ksym_ref(sym) \
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({ \
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void *val = &sym; \
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if (!is_kernel_in_hyp_mode()) \
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val = phys_to_virt((u64)&sym - kimage_voffset); \
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val; \
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})
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2016-02-16 20:52:39 +08:00
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2012-12-10 19:16:40 +08:00
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#ifndef __ASSEMBLY__
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struct kvm;
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struct kvm_vcpu;
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extern char __kvm_hyp_init[];
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extern char __kvm_hyp_init_end[];
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arm64: kvm: allows kvm cpu hotplug
The current kvm implementation on arm64 does cpu-specific initialization
at system boot, and has no way to gracefully shutdown a core in terms of
kvm. This prevents kexec from rebooting the system at EL2.
This patch adds a cpu tear-down function and also puts an existing cpu-init
code into a separate function, kvm_arch_hardware_disable() and
kvm_arch_hardware_enable() respectively.
We don't need the arm64 specific cpu hotplug hook any more.
Since this patch modifies common code between arm and arm64, one stub
definition, __cpu_reset_hyp_mode(), is added on arm side to avoid
compilation errors.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
[Rebase, added separate VHE init/exit path, changed resets use of
kvm_call_hyp() to the __version, en/disabled hardware in init_subsystems(),
added icache maintenance to __kvm_hyp_reset() and removed lr restore, removed
guest-enter after teardown handling]
Signed-off-by: James Morse <james.morse@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-04-28 00:47:05 +08:00
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extern char __kvm_hyp_reset[];
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2012-12-10 19:16:40 +08:00
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extern char __kvm_hyp_vector[];
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extern void __kvm_flush_vm_context(void);
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extern void __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa);
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2015-01-16 07:58:59 +08:00
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extern void __kvm_tlb_flush_vmid(struct kvm *kvm);
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2016-10-19 01:37:49 +08:00
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extern void __kvm_tlb_flush_local_vmid(struct kvm_vcpu *vcpu);
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2012-12-10 19:16:40 +08:00
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extern int __kvm_vcpu_run(struct kvm_vcpu *vcpu);
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2013-06-21 18:57:56 +08:00
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2013-07-12 22:15:23 +08:00
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extern u64 __vgic_v3_get_ich_vtr_el2(void);
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2016-03-03 23:43:58 +08:00
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extern void __vgic_v3_init_lrs(void);
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2013-07-12 22:15:23 +08:00
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2015-07-08 00:29:56 +08:00
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extern u32 __kvm_get_mdcr_el2(void);
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2016-04-05 23:11:47 +08:00
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extern u32 __init_stage2_translation(void);
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2015-01-29 21:19:45 +08:00
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2012-12-10 19:16:40 +08:00
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#endif
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#endif /* __ARM_KVM_ASM_H__ */
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