039aeb9deb
Pull kvm updates from Paolo Bonzini:
"ARM:
- Move the arch-specific code into arch/arm64/kvm
- Start the post-32bit cleanup
- Cherry-pick a few non-invasive pre-NV patches
x86:
- Rework of TLB flushing
- Rework of event injection, especially with respect to nested
virtualization
- Nested AMD event injection facelift, building on the rework of
generic code and fixing a lot of corner cases
- Nested AMD live migration support
- Optimization for TSC deadline MSR writes and IPIs
- Various cleanups
- Asynchronous page fault cleanups (from tglx, common topic branch
with tip tree)
- Interrupt-based delivery of asynchronous "page ready" events (host
side)
- Hyper-V MSRs and hypercalls for guest debugging
- VMX preemption timer fixes
s390:
- Cleanups
Generic:
- switch vCPU thread wakeup from swait to rcuwait
The other architectures, and the guest side of the asynchronous page
fault work, will come next week"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (256 commits)
KVM: selftests: fix rdtsc() for vmx_tsc_adjust_test
KVM: check userspace_addr for all memslots
KVM: selftests: update hyperv_cpuid with SynDBG tests
x86/kvm/hyper-v: Add support for synthetic debugger via hypercalls
x86/kvm/hyper-v: enable hypercalls regardless of hypercall page
x86/kvm/hyper-v: Add support for synthetic debugger interface
x86/hyper-v: Add synthetic debugger definitions
KVM: selftests: VMX preemption timer migration test
KVM: nVMX: Fix VMX preemption timer migration
x86/kvm/hyper-v: Explicitly align hcall param for kvm_hyperv_exit
KVM: x86/pmu: Support full width counting
KVM: x86/pmu: Tweak kvm_pmu_get_msr to pass 'struct msr_data' in
KVM: x86: announce KVM_FEATURE_ASYNC_PF_INT
KVM: x86: acknowledgment mechanism for async pf page ready notifications
KVM: x86: interrupt based APF 'page ready' event delivery
KVM: introduce kvm_read_guest_offset_cached()
KVM: rename kvm_arch_can_inject_async_page_present() to kvm_arch_can_dequeue_async_page_present()
KVM: x86: extend struct kvm_vcpu_pv_apf_data with token info
Revert "KVM: async_pf: Fix #DF due to inject "Page not Present" and "Page Ready" exceptions simultaneously"
KVM: VMX: Replace zero-length array with flexible-array
...
92 lines
3.2 KiB
C
92 lines
3.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2015 - ARM Ltd
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* Author: Marc Zyngier <marc.zyngier@arm.com>
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*/
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#ifndef __ARM64_KVM_HYP_H__
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#define __ARM64_KVM_HYP_H__
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#include <linux/compiler.h>
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#include <linux/kvm_host.h>
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#include <asm/alternative.h>
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#include <asm/sysreg.h>
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#define __hyp_text __section(.hyp.text) notrace __noscs
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#define read_sysreg_elx(r,nvh,vh) \
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({ \
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u64 reg; \
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asm volatile(ALTERNATIVE(__mrs_s("%0", r##nvh), \
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__mrs_s("%0", r##vh), \
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ARM64_HAS_VIRT_HOST_EXTN) \
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: "=r" (reg)); \
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reg; \
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})
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#define write_sysreg_elx(v,r,nvh,vh) \
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do { \
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u64 __val = (u64)(v); \
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asm volatile(ALTERNATIVE(__msr_s(r##nvh, "%x0"), \
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__msr_s(r##vh, "%x0"), \
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ARM64_HAS_VIRT_HOST_EXTN) \
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: : "rZ" (__val)); \
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} while (0)
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/*
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* Unified accessors for registers that have a different encoding
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* between VHE and non-VHE. They must be specified without their "ELx"
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* encoding, but with the SYS_ prefix, as defined in asm/sysreg.h.
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*/
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#define read_sysreg_el0(r) read_sysreg_elx(r, _EL0, _EL02)
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#define write_sysreg_el0(v,r) write_sysreg_elx(v, r, _EL0, _EL02)
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#define read_sysreg_el1(r) read_sysreg_elx(r, _EL1, _EL12)
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#define write_sysreg_el1(v,r) write_sysreg_elx(v, r, _EL1, _EL12)
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#define read_sysreg_el2(r) read_sysreg_elx(r, _EL2, _EL1)
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#define write_sysreg_el2(v,r) write_sysreg_elx(v, r, _EL2, _EL1)
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/*
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* Without an __arch_swab32(), we fall back to ___constant_swab32(), but the
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* static inline can allow the compiler to out-of-line this. KVM always wants
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* the macro version as its always inlined.
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*/
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#define __kvm_swab32(x) ___constant_swab32(x)
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int __vgic_v2_perform_cpuif_access(struct kvm_vcpu *vcpu);
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void __vgic_v3_save_state(struct vgic_v3_cpu_if *cpu_if);
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void __vgic_v3_restore_state(struct vgic_v3_cpu_if *cpu_if);
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void __vgic_v3_activate_traps(struct vgic_v3_cpu_if *cpu_if);
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void __vgic_v3_deactivate_traps(struct vgic_v3_cpu_if *cpu_if);
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void __vgic_v3_save_aprs(struct vgic_v3_cpu_if *cpu_if);
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void __vgic_v3_restore_aprs(struct vgic_v3_cpu_if *cpu_if);
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int __vgic_v3_perform_cpuif_access(struct kvm_vcpu *vcpu);
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void __timer_enable_traps(struct kvm_vcpu *vcpu);
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void __timer_disable_traps(struct kvm_vcpu *vcpu);
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void __sysreg_save_state_nvhe(struct kvm_cpu_context *ctxt);
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void __sysreg_restore_state_nvhe(struct kvm_cpu_context *ctxt);
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void sysreg_save_host_state_vhe(struct kvm_cpu_context *ctxt);
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void sysreg_restore_host_state_vhe(struct kvm_cpu_context *ctxt);
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void sysreg_save_guest_state_vhe(struct kvm_cpu_context *ctxt);
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void sysreg_restore_guest_state_vhe(struct kvm_cpu_context *ctxt);
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void __sysreg32_save_state(struct kvm_vcpu *vcpu);
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void __sysreg32_restore_state(struct kvm_vcpu *vcpu);
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void __debug_switch_to_guest(struct kvm_vcpu *vcpu);
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void __debug_switch_to_host(struct kvm_vcpu *vcpu);
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void __fpsimd_save_state(struct user_fpsimd_state *fp_regs);
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void __fpsimd_restore_state(struct user_fpsimd_state *fp_regs);
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void activate_traps_vhe_load(struct kvm_vcpu *vcpu);
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void deactivate_traps_vhe_put(void);
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u64 __guest_enter(struct kvm_vcpu *vcpu, struct kvm_cpu_context *host_ctxt);
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void __noreturn __hyp_do_panic(unsigned long, ...);
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#endif /* __ARM64_KVM_HYP_H__ */
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