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/linux/arch/x86/kvm/svm/
H A Dnested.c61 u64 cr3 = svm->nested.ctl.nested_cr3; in nested_svm_get_tdp_pdptr()
80 return svm->nested.ctl.nested_cr3; in nested_svm_get_tdp_cr3()
98 svm->nested.ctl.nested_cr3); in nested_svm_init_mmu_context()
119 if (!(svm->nested.ctl.virt_ext & VIRTUAL_VMLOAD_VMSAVE_ENABLE_MASK)) in nested_vmcb_needs_vls_intercept()
138 g = &svm->nested.ctl; in recalc_intercepts()
282 nsvm_msrpm_merge_t *msrpm02 = svm->nested.msrpm; in nested_svm_merge_msrpm()
295 if (!svm->nested.force_msr_bitmap_recalc) { in nested_svm_merge_msrpm()
296 struct hv_vmcb_enlightenments *hve = &svm->nested.ctl.hv_enlightenments; in nested_svm_merge_msrpm()
300 (svm->nested.ctl.clean & BIT(HV_VMCB_NESTED_ENLIGHTENMENTS))) in nested_svm_merge_msrpm()
305 if (!(vmcb12_is_intercept(&svm->nested.ctl, INTERCEPT_MSR_PROT))) in nested_svm_merge_msrpm()
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H A Dhyperv.h18 struct hv_vmcb_enlightenments *hve = &svm->nested.ctl.hv_enlightenments; in nested_svm_hv_update_vm_vp_ids()
24 hv_vcpu->nested.pa_page_gpa = hve->partition_assist_page; in nested_svm_hv_update_vm_vp_ids()
25 hv_vcpu->nested.vm_id = hve->hv_vm_id; in nested_svm_hv_update_vm_vp_ids()
26 hv_vcpu->nested.vp_id = hve->hv_vp_id; in nested_svm_hv_update_vm_vp_ids()
32 struct hv_vmcb_enlightenments *hve = &svm->nested.ctl.hv_enlightenments; in nested_svm_l2_tlb_flush_enabled()
/linux/tools/testing/selftests/verification/test.d/
H A Drv_monitor_enable_disable.tc24 local nested
31 nested=$(basename "$nested_dir")
32 grep -q "^$monitor:$nested$" enabled_monitors
34 test -n "$nested"
41 nested=$(basename "$nested_dir")
42 ! grep -q "^$monitor:$nested$" enabled_monitors
50 nested=$(basename "$nested_dir")
51 grep -q "^$monitor:$nested$" enabled_monitors
59 nested=$(basename "$nested_dir")
60 test_simple_monitor "$nested" "$monitor/"
H A Drv_monitor_reactor.tc23 local nested
33 nested=$(basename "$nested_dir")
34 grep -q "\\[$reactor\\]" "monitors/$monitor/$nested/reactors"
37 test -n "$nested"
44 nested=$(basename "$nested_dir")
45 grep -q "\\[nop\\]" "monitors/$monitor/$nested/reactors"
50 nested=$(basename "$nested_dir")
51 test_monitor_reactor "$nested" "$monitor/"
H A Drv_monitors_available.tc13 nested=$(basename "$nested_dir")
15 grep -q "^$monitor:$nested$" available_monitors
/linux/Documentation/virt/kvm/x86/
H A Drunning-nested-guests.rst4 Running nested guests with KVM
7 A nested guest is the ability to run a guest inside another guest (it
36 - L2 – level-2 guest; a VM running on L1, this is the "nested guest"
44 resulting in at least four levels in a nested setup — L0 (bare
46 (guest hypervisor), L3 (nested guest).
56 There are several scenarios where nested KVM can be useful, to name a
61 Provider, using nested KVM lets you rent a large enough "guest
63 multiple nested guests (level-2 guests), running different OSes, on
66 - Live migration of "guest hypervisors" and their nested guests, for
76 Enabling "nested" (x86)
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H A Dnested-vmx.rst16 hypervisors (which use VMX) with their own nested guests. It does so by
20 We describe in much greater detail the theory behind the nested VMX feature,
32 In nested virtualization, we have three levels: The host (KVM), which we call
33 L0, the guest hypervisor, which we call L1, and its nested guest, which we
37 Running nested VMX
40 The nested VMX feature is enabled by default since Linux kernel v4.20. For
41 older Linux kernel, it can be enabled by giving the "nested=1" option to the
65 As a VMX implementation, nested VMX presents a VMCS structure to L1.
H A Dindex.rst17 nested-vmx
18 running-nested-guests
/linux/arch/x86/kvm/vmx/
H A Dnested.c189 to_vmx(vcpu)->nested.need_vmcs12_to_shadow_sync = true; in nested_vmx_failValid()
202 if (vmx->nested.current_vmptr == INVALID_GPA && in nested_vmx_fail()
230 vmx->nested.need_vmcs12_to_shadow_sync = false; in vmx_disable_shadow_vmcs()
239 kvm_vcpu_unmap(vcpu, &vmx->nested.hv_evmcs_map); in nested_release_evmcs()
240 vmx->nested.hv_evmcs = NULL; in nested_release_evmcs()
241 vmx->nested.hv_evmcs_vmptr = EVMPTR_INVALID; in nested_release_evmcs()
244 hv_vcpu->nested.pa_page_gpa = INVALID_GPA; in nested_release_evmcs()
245 hv_vcpu->nested.vm_id = 0; in nested_release_evmcs()
246 hv_vcpu->nested.vp_id = 0; in nested_release_evmcs()
269 if (nested_vmx_evmcs(vmx) && vmptr == vmx->nested.hv_evmcs_vmptr) in nested_evmcs_handle_vmclear()
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H A Dnested.h63 return to_vmx(vcpu)->nested.cached_vmcs12; in get_vmcs12()
71 return to_vmx(vcpu)->nested.cached_shadow_vmcs12; in get_shadow_vmcs12()
84 return vmx->nested.current_vmptr != -1ull || in vmx_has_valid_vmcs12()
92 return vmx->nested.vpid02 ? vmx->nested.vpid02 : vmx->vpid; in nested_get_vpid02()
125 return vmx_misc_cr3_count(to_vmx(vcpu)->nested.msrs.misc_low); in nested_cpu_vmx_misc_cr3_count()
135 return to_vmx(vcpu)->nested.msrs.misc_low & in nested_cpu_has_vmwrite_any_field()
141 return to_vmx(vcpu)->nested.msrs.misc_low & VMX_MISC_ZERO_LEN_INS; in nested_cpu_has_zero_length_injection()
146 return to_vmx(vcpu)->nested.msrs.procbased_ctls_high & in nested_cpu_supports_monitor_trap_flag()
152 return to_vmx(vcpu)->nested.msrs.secondary_ctls_high & in nested_cpu_has_vmx_shadow_vmcs()
283 u64 fixed0 = to_vmx(vcpu)->nested.msrs.cr0_fixed0; in nested_guest_cr0_valid()
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H A Dhyperv.h27 return evmptr_is_valid(vmx->nested.hv_evmcs_vmptr); in nested_vmx_is_evmptr12_valid()
37 return evmptr_is_set(vmx->nested.hv_evmcs_vmptr); in nested_vmx_is_evmptr12_set()
42 return vmx->nested.hv_evmcs; in nested_vmx_evmcs()
52 to_vmx(vcpu)->nested.enlightened_vmcs_enabled; in guest_cpu_cap_has_evmcs()
/linux/rust/pin-init/internal/src/
H A Dzeroable.rs34 let mut nested = 0; parse_zeroable_derive_input() localVariable
/linux/Documentation/networking/
H A Dethtool-netlink.rst53 Each request or reply message contains a nested attribute with common header.
96 type is used. For arbitrary length bitmaps, ethtool netlink uses a nested
116 Compact form: nested (bitset) attribute contents:
141 Bit-by-bit form: nested (bitset) attribute contents:
148 | ``ETHTOOL_A_BITSET_BITS`` | nested | array of bits |
150 | | ``ETHTOOL_A_BITSET_BITS_BIT+`` | nested | one bit |
350 | ``ETHTOOL_A_STRSET_HEADER`` | nested | request header |
352 | ``ETHTOOL_A_STRSET_STRINGSETS`` | nested | string set to request |
354 | | ``ETHTOOL_A_STRINGSETS_STRINGSET+`` | nested | one string set |
362 | ``ETHTOOL_A_STRSET_HEADER`` | nested | reply header |
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/linux/Documentation/networking/devlink/
H A Dindex.rst33 lock of both nested and parent instances at the same time, devlink
35 instance lock of the nested instance could be taken.
37 nested relationship:
39 - ``devl_nested_devlink_set()`` - called to setup devlink -> nested
40 devlink relationship (could be user for multiple nested instances.
42 nested devlink relationship.
44 nested devlink relationship.
46 The nested devlink info is exposed to the userspace over object-specific
/linux/tools/perf/bench/
H A Depoll-ctl.c57 static unsigned int nested = 0; variable
79 …OPT_UINTEGER( 'N', "nested", &nested, "Nesting level epoll hierarchy (default is 0, no nesting)…
105 if (nested > EPOLL_MAXNESTS) in nest_epollfd()
106 nested = EPOLL_MAXNESTS; in nest_epollfd()
107 printinfo("Nesting level(s): %d\n", nested); in nest_epollfd()
109 epollfdp = calloc(nested, sizeof(int)); in nest_epollfd()
113 for (i = 0; i < nested; i++) { in nest_epollfd()
122 for (i = nested - 1; i; i--) { in nest_epollfd()
345 if (nested) in bench_epoll_ctl()
H A Depoll-wait.c105 static unsigned int nested = 0; variable
138 …OPT_UINTEGER( 'N', "nested", &nested, "Nesting level epoll hierarchy (default is 0, no nesting)…
246 if (nested > EPOLL_MAXNESTS) in nest_epollfd()
247 nested = EPOLL_MAXNESTS; in nest_epollfd()
249 epollfdp = calloc(nested, sizeof(*epollfdp)); in nest_epollfd()
253 for (i = 0; i < nested; i++) { in nest_epollfd()
262 for (i = nested - 1; i; i--) { in nest_epollfd()
325 if (nested) in do_threads()
465 if (nested) in bench_epoll_wait()
470 printinfo("Nesting level(s): %d\n", nested); in bench_epoll_wait()
/linux/net/netfilter/ipset/
H A Dip_set_bitmap_gen.h95 struct nlattr *nested; in mtype_head() local
98 nested = nla_nest_start(skb, IPSET_ATTR_DATA); in mtype_head()
99 if (!nested) in mtype_head()
108 nla_nest_end(skb, nested); in mtype_head()
207 struct nlattr *adt, *nested; in mtype_list() local
229 nested = nla_nest_start(skb, IPSET_ATTR_DATA); in mtype_list()
230 if (!nested) { in mtype_list()
243 nla_nest_end(skb, nested); in mtype_list()
253 nla_nest_cancel(skb, nested); in mtype_list()
H A Dip_set_list_set.c457 struct nlattr *nested; in list_set_head() local
460 nested = nla_nest_start(skb, IPSET_ATTR_DATA); in list_set_head()
461 if (!nested) in list_set_head()
470 nla_nest_end(skb, nested); in list_set_head()
482 struct nlattr *atd, *nested; in list_set_list() local
500 nested = nla_nest_start(skb, IPSET_ATTR_DATA); in list_set_list()
501 if (!nested) in list_set_list()
508 nla_nest_end(skb, nested); in list_set_list()
518 nla_nest_cancel(skb, nested); in list_set_list()
/linux/arch/riscv/kernel/
H A Dkernel_mode_vector.c190 #define riscv_v_start_kernel_context(nested) (-ENOENT) argument
209 bool nested = false; in kernel_vector_begin() local
216 if (riscv_v_start_kernel_context(&nested)) { in kernel_vector_begin()
221 if (!nested) in kernel_vector_begin()
/linux/arch/arm64/kvm/
H A Dmmu.c1546 static void adjust_nested_fault_perms(struct kvm_s2_trans *nested, in adjust_nested_fault_perms() argument
1550 *writable &= kvm_s2_trans_writable(nested); in adjust_nested_fault_perms()
1551 if (!kvm_s2_trans_readable(nested)) in adjust_nested_fault_perms()
1554 *prot |= kvm_encode_nested_level(nested); in adjust_nested_fault_perms()
1558 struct kvm_s2_trans *nested, in adjust_nested_exec_perms() argument
1561 if (!kvm_s2_trans_exec_el0(kvm, nested)) in adjust_nested_exec_perms()
1563 if (!kvm_s2_trans_exec_el1(kvm, nested)) in adjust_nested_exec_perms()
1568 struct kvm_s2_trans *nested, in gmem_abort() argument
1587 if (nested) in gmem_abort()
1588 gfn = kvm_s2_trans_output(nested) >> PAGE_SHIFT; in gmem_abort()
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H A DMakefile20 arch_timer.o trng.o vmid.o emulate-nested.o nested.o at.o \
26 vgic/vgic-its.o vgic/vgic-debug.o vgic/vgic-v3-nested.o \
/linux/scripts/coccinelle/locks/
H A Dflags.cocci2 /// Find nested lock+irqsave functions that use the same flags variables
73 cocci.print_secs("nested lock+irqsave that reuses flags",p2)
80 msg="ERROR: nested lock+irqsave that reuses flags from line %s." % (p1[0].line)
/linux/Documentation/tools/rv/
H A Drv-mon-sched.rst28 As a monitor container, it will enable all nested monitors and set them
30 Nevertheless nested monitors can also be activated independently both by name
48 The available nested monitors are:
/linux/arch/powerpc/kvm/
H A Dbook3s_hv_p9_entry.c137 if (!vcpu->arch.nested) { in store_vcpu_state()
201 if (!vcpu->arch.nested) { in restore_p9_host_os_sprs()
303 struct kvm_nested_guest *nested = vcpu->arch.nested; in switch_mmu_to_guest_radix() local
307 lpid = nested ? nested->shadow_lpid : kvm->arch.lpid; in switch_mmu_to_guest_radix()
454 struct kvm_nested_guest *nested) in check_need_tlb_flush() argument
460 if (nested) in check_need_tlb_flush()
461 need_tlb_flush = &nested->need_tlb_flush; in check_need_tlb_flush()
536 struct kvm_nested_guest *nested = vcpu->arch.nested; in kvmhv_vcpu_entry_p9() local
703 check_need_tlb_flush(kvm, vc->pcpu, nested); in kvmhv_vcpu_entry_p9()
H A Dbook3s_64_mmu_radix.c110 if (vcpu->arch.nested) in kvmhv_copy_tofrom_guest_radix()
111 lpid = vcpu->arch.nested->shadow_lpid; in kvmhv_copy_tofrom_guest_radix()
793 bool kvmppc_hv_handle_set_rc(struct kvm *kvm, bool nested, bool writing, in kvmppc_hv_handle_set_rc() argument
809 if (nested) in kvmppc_hv_handle_set_rc()
1289 struct kvm_nested_guest *nested; in debugfs_radix_read() local
1325 nested = NULL; in debugfs_radix_read()
1331 if (nested) { in debugfs_radix_read()
1332 kvmhv_put_nested(nested); in debugfs_radix_read()
1333 nested = NULL; in debugfs_radix_read()
1344 nested = kvmhv_get_nested(kvm, p->lpid, false); in debugfs_radix_read()
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