f9a705ad1c
- New page table code for both hypervisor and guest stage-2 - Introduction of a new EL2-private host context - Allow EL2 to have its own private per-CPU variables - Support of PMU event filtering - Complete rework of the Spectre mitigation PPC: - Fix for running nested guests with in-kernel IRQ chip - Fix race condition causing occasional host hard lockup - Minor cleanups and bugfixes x86: - allow trapping unknown MSRs to userspace - allow userspace to force #GP on specific MSRs - INVPCID support on AMD - nested AMD cleanup, on demand allocation of nested SVM state - hide PV MSRs and hypercalls for features not enabled in CPUID - new test for MSR_IA32_TSC writes from host and guest - cleanups: MMU, CPUID, shared MSRs - LAPIC latency optimizations ad bugfixes For x86, also included in this pull request is a new alternative and (in the future) more scalable implementation of extended page tables that does not need a reverse map from guest physical addresses to host physical addresses. For now it is disabled by default because it is still lacking a few of the existing MMU's bells and whistles. However it is a very solid piece of work and it is already available for people to hammer on it. -----BEGIN PGP SIGNATURE----- iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAl+S8dsUHHBib256aW5p QHJlZGhhdC5jb20ACgkQv/vSX3jHroM40Af+M46NJmuS5rcwFfybvK/c42KT6svX Co1NrZDwzSQ2mMy3WQzH9qeLvb+nbY4sT3n5BPNPNsT+aIDPOTDt//qJ2/Ip9UUs tRNea0MAR96JWLE7MSeeRxnTaQIrw/AAZC0RXFzZvxcgytXwdqBExugw4im+b+dn Dcz8QxX1EkwT+4lTm5HC0hKZAuo4apnK1QkqCq4SdD2QVJ1YE6+z7pgj4wX7xitr STKD6q/Yt/0ndwqS0GSGbyg0jy6mE620SN6isFRkJYwqfwLJci6KnqvEK67EcNMu qeE017K+d93yIVC46/6TfVHzLR/D1FpQ8LZ16Yl6S13OuGIfAWBkQZtPRg== =AD6a -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull KVM updates from Paolo Bonzini: "For x86, there is a new alternative and (in the future) more scalable implementation of extended page tables that does not need a reverse map from guest physical addresses to host physical addresses. For now it is disabled by default because it is still lacking a few of the existing MMU's bells and whistles. However it is a very solid piece of work and it is already available for people to hammer on it. Other updates: ARM: - New page table code for both hypervisor and guest stage-2 - Introduction of a new EL2-private host context - Allow EL2 to have its own private per-CPU variables - Support of PMU event filtering - Complete rework of the Spectre mitigation PPC: - Fix for running nested guests with in-kernel IRQ chip - Fix race condition causing occasional host hard lockup - Minor cleanups and bugfixes x86: - allow trapping unknown MSRs to userspace - allow userspace to force #GP on specific MSRs - INVPCID support on AMD - nested AMD cleanup, on demand allocation of nested SVM state - hide PV MSRs and hypercalls for features not enabled in CPUID - new test for MSR_IA32_TSC writes from host and guest - cleanups: MMU, CPUID, shared MSRs - LAPIC latency optimizations ad bugfixes" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (232 commits) kvm: x86/mmu: NX largepage recovery for TDP MMU kvm: x86/mmu: Don't clear write flooding count for direct roots kvm: x86/mmu: Support MMIO in the TDP MMU kvm: x86/mmu: Support write protection for nesting in tdp MMU kvm: x86/mmu: Support disabling dirty logging for the tdp MMU kvm: x86/mmu: Support dirty logging for the TDP MMU kvm: x86/mmu: Support changed pte notifier in tdp MMU kvm: x86/mmu: Add access tracking for tdp_mmu kvm: x86/mmu: Support invalidate range MMU notifier for TDP MMU kvm: x86/mmu: Allocate struct kvm_mmu_pages for all pages in TDP MMU kvm: x86/mmu: Add TDP MMU PF handler kvm: x86/mmu: Remove disallowed_hugepage_adjust shadow_walk_iterator arg kvm: x86/mmu: Support zapping SPTEs in the TDP MMU KVM: Cache as_id in kvm_memory_slot kvm: x86/mmu: Add functions to handle changed TDP SPTEs kvm: x86/mmu: Allocate and free TDP MMU roots kvm: x86/mmu: Init / Uninit the TDP MMU kvm: x86/mmu: Introduce tdp_iter KVM: mmu: extract spte.h and spte.c KVM: mmu: Separate updating a PTE from kvm_set_pte_rmapp ...
110 lines
3.3 KiB
C
110 lines
3.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Linker script variables to be set after section resolution, as
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* ld.lld does not like variables assigned before SECTIONS is processed.
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*/
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#ifndef __ARM64_KERNEL_IMAGE_VARS_H
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#define __ARM64_KERNEL_IMAGE_VARS_H
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#ifndef LINKER_SCRIPT
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#error This file should only be included in vmlinux.lds.S
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#endif
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#ifdef CONFIG_EFI
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__efistub_kernel_size = _edata - _text;
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__efistub_primary_entry_offset = primary_entry - _text;
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/*
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* The EFI stub has its own symbol namespace prefixed by __efistub_, to
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* isolate it from the kernel proper. The following symbols are legally
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* accessed by the stub, so provide some aliases to make them accessible.
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* Only include data symbols here, or text symbols of functions that are
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* guaranteed to be safe when executed at another offset than they were
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* linked at. The routines below are all implemented in assembler in a
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* position independent manner
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*/
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__efistub_memcmp = __pi_memcmp;
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__efistub_memchr = __pi_memchr;
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__efistub_memcpy = __pi_memcpy;
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__efistub_memmove = __pi_memmove;
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__efistub_memset = __pi_memset;
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__efistub_strlen = __pi_strlen;
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__efistub_strnlen = __pi_strnlen;
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__efistub_strcmp = __pi_strcmp;
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__efistub_strncmp = __pi_strncmp;
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__efistub_strrchr = __pi_strrchr;
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__efistub___clean_dcache_area_poc = __pi___clean_dcache_area_poc;
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#ifdef CONFIG_KASAN
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__efistub___memcpy = __pi_memcpy;
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__efistub___memmove = __pi_memmove;
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__efistub___memset = __pi_memset;
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#endif
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__efistub__text = _text;
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__efistub__end = _end;
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__efistub__edata = _edata;
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__efistub_screen_info = screen_info;
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__efistub__ctype = _ctype;
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#endif
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#ifdef CONFIG_KVM
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/*
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* KVM nVHE code has its own symbol namespace prefixed with __kvm_nvhe_, to
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* separate it from the kernel proper. The following symbols are legally
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* accessed by it, therefore provide aliases to make them linkable.
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* Do not include symbols which may not be safely accessed under hypervisor
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* memory mappings.
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*/
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/* Alternative callbacks for init-time patching of nVHE hyp code. */
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KVM_NVHE_ALIAS(kvm_patch_vector_branch);
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KVM_NVHE_ALIAS(kvm_update_va_mask);
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/* Global kernel state accessed by nVHE hyp code. */
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KVM_NVHE_ALIAS(kvm_vgic_global_state);
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/* Kernel constant needed to compute idmap addresses. */
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KVM_NVHE_ALIAS(kimage_voffset);
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/* Kernel symbols used to call panic() from nVHE hyp code (via ERET). */
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KVM_NVHE_ALIAS(__hyp_panic_string);
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KVM_NVHE_ALIAS(panic);
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/* Vectors installed by hyp-init on reset HVC. */
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KVM_NVHE_ALIAS(__hyp_stub_vectors);
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/* IDMAP TCR_EL1.T0SZ as computed by the EL1 init code */
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KVM_NVHE_ALIAS(idmap_t0sz);
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/* Kernel symbol used by icache_is_vpipt(). */
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KVM_NVHE_ALIAS(__icache_flags);
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/* Kernel symbols needed for cpus_have_final/const_caps checks. */
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KVM_NVHE_ALIAS(arm64_const_caps_ready);
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KVM_NVHE_ALIAS(cpu_hwcap_keys);
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KVM_NVHE_ALIAS(cpu_hwcaps);
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/* Static keys which are set if a vGIC trap should be handled in hyp. */
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KVM_NVHE_ALIAS(vgic_v2_cpuif_trap);
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KVM_NVHE_ALIAS(vgic_v3_cpuif_trap);
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/* Static key checked in pmr_sync(). */
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#ifdef CONFIG_ARM64_PSEUDO_NMI
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KVM_NVHE_ALIAS(gic_pmr_sync);
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/* Static key checked in GIC_PRIO_IRQOFF. */
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KVM_NVHE_ALIAS(gic_nonsecure_priorities);
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#endif
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/* EL2 exception handling */
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KVM_NVHE_ALIAS(__start___kvm_ex_table);
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KVM_NVHE_ALIAS(__stop___kvm_ex_table);
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#endif /* CONFIG_KVM */
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#endif /* __ARM64_KERNEL_IMAGE_VARS_H */
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