| /linux-6.12.1/Documentation/virt/kvm/x86/ |
| D | running-nested-guests.rst | 4 Running nested guests with KVM
7 A nested guest is the ability to run a guest inside another guest (it
15 | (Nested Guest) | | (Nested Guest) |
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
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| D | nested-vmx.rst | 4 Nested VMX
15 The "Nested VMX" feature adds this missing capability - of running guest
16 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,
22 "The Turtles Project: Design and Implementation of Nested Virtualization",
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
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| /linux-6.12.1/include/uapi/linux/ |
| D | devlink.h | 300 DEVLINK_ATTR_SELFTEST_RESULT, /* nested */
421 DEVLINK_ATTR_DPIPE_TABLES, /* nested */
422 DEVLINK_ATTR_DPIPE_TABLE, /* nested */
425 DEVLINK_ATTR_DPIPE_TABLE_MATCHES, /* nested */
426 DEVLINK_ATTR_DPIPE_TABLE_ACTIONS, /* nested */
429 DEVLINK_ATTR_DPIPE_ENTRIES, /* nested */
430 DEVLINK_ATTR_DPIPE_ENTRY, /* nested */
432 DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES, /* nested */
433 DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES, /* nested */
436 DEVLINK_ATTR_DPIPE_MATCH, /* nested */
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| D | if_macsec.h | 45 MACSEC_ATTR_RXSC_CONFIG, /* config, nested macsec_rxsc_attrs */
46 MACSEC_ATTR_SA_CONFIG, /* config, nested macsec_sa_attrs */
47 MACSEC_ATTR_SECY, /* dump, nested macsec_secy_attrs */
48 MACSEC_ATTR_TXSA_LIST, /* dump, nested, macsec_sa_attrs for each TXSA */
49 MACSEC_ATTR_RXSC_LIST, /* dump, nested, macsec_rxsc_attrs for each RXSC */
50 MACSEC_ATTR_TXSC_STATS, /* dump, nested, macsec_txsc_stats_attr */
51 MACSEC_ATTR_SECY_STATS, /* dump, nested, macsec_secy_stats_attr */
52 MACSEC_ATTR_OFFLOAD, /* config, nested, macsec_offload_attrs */
83 MACSEC_RXSC_ATTR_SA_LIST, /* dump, nested */
84 MACSEC_RXSC_ATTR_STATS, /* dump, nested, macsec_rxsc_stats_attr */
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| D | openvswitch.h | 168 * extracted from the packet as nested %OVS_KEY_ATTR_* attributes. This allows
172 * for %OVS_PACKET_CMD_EXECUTE. It has nested %OVS_ACTION_ATTR_* attributes.
183 * extracted from the packet as nested %OVS_TUNNEL_KEY_ATTR_* attributes.
196 OVS_PACKET_ATTR_KEY, /* Nested OVS_KEY_ATTR_* attributes. */
197 OVS_PACKET_ATTR_ACTIONS, /* Nested OVS_ACTION_ATTR_* attributes. */
199 OVS_PACKET_ATTR_EGRESS_TUN_KEY, /* Nested OVS_TUNNEL_KEY_ATTR_*
273 OVS_VPORT_ATTR_OPTIONS, /* nested attributes, varies by vport type */
340 OVS_KEY_ATTR_ENCAP, /* Nested set of encapsulated attributes. */
355 OVS_KEY_ATTR_TUNNEL, /* Nested set of ovs_tunnel attributes */
370 OVS_KEY_ATTR_NSH, /* Nested set of ovs_nsh_key_* */
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| D | net_dropmon.h | 77 NET_DM_ATTR_IN_PORT, /* nested */
85 NET_DM_ATTR_STATS, /* nested */
86 NET_DM_ATTR_HW_STATS, /* nested */
90 NET_DM_ATTR_HW_ENTRIES, /* nested */
91 NET_DM_ATTR_HW_ENTRY, /* nested */
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| D | ip_vs.h | 342 IPVS_CMD_ATTR_SERVICE, /* nested service attribute */
343 IPVS_CMD_ATTR_DEST, /* nested destination attribute */
344 IPVS_CMD_ATTR_DAEMON, /* nested sync daemon attribute */
356 * Used inside nested attribute IPVS_CMD_ATTR_SERVICE
371 IPVS_SVC_ATTR_STATS, /* nested attribute for service stats */
375 IPVS_SVC_ATTR_STATS64, /* nested attribute for service stats */
385 * Used inside nested attribute IPVS_CMD_ATTR_DEST
402 IPVS_DEST_ATTR_STATS, /* nested attribute for dest stats */
406 IPVS_DEST_ATTR_STATS64, /* nested attribute for dest stats */
422 * Used inside nested attribute IPVS_CMD_ATTR_DAEMON
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| D | ncsi.h | 55 * @NCSI_ATTR_PACKAGE_LIST: nested array of NCSI_PKG_ATTR attributes
84 * @NCSI_PKG_ATTR: nested array of package attributes
87 * @NCSI_PKG_ATTR_CHANNEL_LIST: nested array of NCSI_CHANNEL_ATTR attributes
105 * @NCSI_CHANNEL_ATTR: nested array of channel attributes
115 * @NCSI_CHANNEL_ATTR_VLAN_LIST: nested array of NCSI_CHANNEL_ATTR_VLAN_IDs
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| /linux-6.12.1/Documentation/netlink/specs/ |
| D | ethtool.yaml | 85 nested-attributes: bitset-bit
98 nested-attributes: bitset-bits
116 nested-attributes: string
130 nested-attributes: strings
138 nested-attributes: stringset
145 nested-attributes: header
149 nested-attributes: stringsets
160 nested-attributes: header
164 nested-attributes: bitset
172 nested-attributes: header
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| D | ovs_flow.yaml | 383 nested-attributes: key-attrs
385 Nested attributes specifying the flow key. Always present in
390 nested-attributes: action-attrs
392 Nested attributes specifying the actions to take for packets that
397 nested attributes must be given.
430 nested-attributes: key-attrs
432 Nested attributes specifying the mask bits for wildcarded flow
472 nested-attributes: key-attrs
533 nested-attributes: tunnel-key-attrs
582 nested-attributes: ovs-nsh-key-attrs
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| D | nftables.yaml | 290 nested-attributes: nft-hook-attrs
309 nested-attributes: nft-counter-attrs
359 nested-attributes: hook-dev-attrs
396 nested-attributes: expr-list-attrs
401 nested-attributes: rule-compat-attrs
430 nested-attributes: expr-attrs
501 nested-attributes: set-desc-attrs
535 nested-attributes: expr-attrs
541 nested-attributes: set-list-attrs
554 nested-attributes: set-desc-concat-attrs
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| D | devlink.yaml | 298 nested-attributes: dl-dpipe-tables
303 nested-attributes: dl-dpipe-table
313 nested-attributes: dl-dpipe-table-matches
317 nested-attributes: dl-dpipe-table-actions
324 nested-attributes: dl-dpipe-entries
329 nested-attributes: dl-dpipe-entry
336 nested-attributes: dl-dpipe-entry-match-values
340 nested-attributes: dl-dpipe-entry-action-values
348 nested-attributes: dl-dpipe-match
353 nested-attributes: dl-dpipe-match-value
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| D | nlctrl.yaml | 40 - nested
41 - nested-array
70 nested-attributes: op-attrs
75 nested-attributes: mcast-group-attrs
80 nested-attributes: policy-attrs
85 nested-attributes: op-policy-attrs
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| /linux-6.12.1/arch/x86/kvm/svm/ |
| D | nested.c | 44 * TODO: track the cause of the nested page fault, and in nested_svm_inject_npf_exit()
62 u64 cr3 = svm->nested.ctl.nested_cr3; in nested_svm_get_tdp_pdptr()
81 return svm->nested.ctl.nested_cr3; in nested_svm_get_tdp_cr3()
99 svm->nested.ctl.nested_cr3); in nested_svm_init_mmu_context()
120 if (!(svm->nested.ctl.virt_ext & VIRTUAL_VMLOAD_VMSAVE_ENABLE_MASK)) in nested_vmcb_needs_vls_intercept()
139 g = &svm->nested.ctl; in recalc_intercepts()
161 * We want to see VMMCALLs from a nested guest only when Hyper-V L2 TLB in recalc_intercepts()
188 * Merge L0's (KVM) and L1's (Nested VMCB) MSR permission bitmaps. The function
199 * - Nested hypervisor (L1) is attempting to launch the same L2 as in nested_svm_vmrun_msrpm()
201 * - Nested hypervisor (L1) is using Hyper-V emulation interface and in nested_svm_vmrun_msrpm()
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| D | hyperv.h | 18 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()
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| /linux-6.12.1/arch/x86/kvm/vmx/ |
| D | nested.h | 45 return to_vmx(vcpu)->nested.cached_vmcs12; in get_vmcs12()
53 return to_vmx(vcpu)->nested.cached_shadow_vmcs12; in get_shadow_vmcs12()
58 * in vmx_set_nested_state; if it is satisfied, the nested state must include
66 return vmx->nested.current_vmptr != -1ull || in vmx_has_valid_vmcs12()
74 return vmx->nested.vpid02 ? vmx->nested.vpid02 : vmx->vpid; in nested_get_vpid02()
89 * Return the cr0/4 value that a nested guest would read. This is a combination
107 return vmx_misc_cr3_count(to_vmx(vcpu)->nested.msrs.misc_low); in nested_cpu_vmx_misc_cr3_count()
117 return to_vmx(vcpu)->nested.msrs.misc_low & in nested_cpu_has_vmwrite_any_field()
123 return to_vmx(vcpu)->nested.msrs.misc_low & VMX_MISC_ZERO_LEN_INS; in nested_cpu_has_zero_length_injection()
128 return to_vmx(vcpu)->nested.msrs.procbased_ctls_high & in nested_cpu_supports_monitor_trap_flag()
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| D | nested.c | 13 #include "nested.h"
184 to_vmx(vcpu)->nested.need_vmcs12_to_shadow_sync = true; in nested_vmx_failValid()
197 if (vmx->nested.current_vmptr == INVALID_GPA && in nested_vmx_fail()
208 pr_debug_ratelimited("nested vmx abort, indicator %d\n", indicator); in nested_vmx_abort()
225 vmx->nested.need_vmcs12_to_shadow_sync = false; in vmx_disable_shadow_vmcs()
235 kvm_vcpu_unmap(vcpu, &vmx->nested.hv_evmcs_map, true); in nested_release_evmcs()
236 vmx->nested.hv_evmcs = NULL; in nested_release_evmcs()
239 vmx->nested.hv_evmcs_vmptr = EVMPTR_INVALID; in nested_release_evmcs()
242 hv_vcpu->nested.pa_page_gpa = INVALID_GPA; in nested_release_evmcs()
243 hv_vcpu->nested.vm_id = 0; in nested_release_evmcs()
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| /linux-6.12.1/include/uapi/rdma/ |
| D | rdma_netlink.h | 389 RDMA_NLDEV_ATTR_RES_SUMMARY, /* nested table */
390 RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY, /* nested table */
394 RDMA_NLDEV_ATTR_RES_QP, /* nested table */
395 RDMA_NLDEV_ATTR_RES_QP_ENTRY, /* nested table */
434 RDMA_NLDEV_ATTR_RES_CM_ID, /* nested table */
435 RDMA_NLDEV_ATTR_RES_CM_ID_ENTRY, /* nested table */
446 RDMA_NLDEV_ATTR_RES_CQ, /* nested table */
447 RDMA_NLDEV_ATTR_RES_CQ_ENTRY, /* nested table */
452 RDMA_NLDEV_ATTR_RES_MR, /* nested table */
453 RDMA_NLDEV_ATTR_RES_MR_ENTRY, /* nested table */
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| /linux-6.12.1/Documentation/networking/devlink/ |
| D | index.rst | 25 Nested instances
33 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-6.12.1/rust/macros/ |
| D | zeroable.rs | 24 let mut nested = 0; in derive() localVariable
28 TokenTree::Punct(p) if nested == 0 && p.as_char() == ',' => { in derive()
37 TokenTree::Punct(p) if nested == 0 && p.as_char() == '\'' => { in derive()
41 TokenTree::Punct(p) if nested == 0 && p.as_char() == ':' => { in derive()
49 nested += 1; in derive()
53 assert!(nested > 0); in derive()
54 nested -= 1; in derive()
60 assert_eq!(nested, 0); in derive()
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| /linux-6.12.1/Documentation/networking/ |
| D | ethtool-netlink.rst | 53 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 |
332 | ``ETHTOOL_A_STRSET_HEADER`` | nested | request header |
334 | ``ETHTOOL_A_STRSET_STRINGSETS`` | nested | string set to request |
336 | | ``ETHTOOL_A_STRINGSETS_STRINGSET+`` | nested | one string set |
344 | ``ETHTOOL_A_STRSET_HEADER`` | nested | reply header |
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| /linux-6.12.1/tools/perf/bench/ |
| D | epoll-ctl.c | 57 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()
343 * Deal with nested epolls, if any. in bench_epoll_ctl()
345 if (nested) in bench_epoll_ctl()
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| /linux-6.12.1/Documentation/dev-tools/ |
| D | ktap.rst | 16 KTAP test results describe a series of tests (which may be nested: i.e., test
29 information, in particular nested test results, may be lost. Also note that
46 start of the nested test results. This differs from TAP14, which uses a
59 Plan lines follow version lines to indicate the number of nested tests.
182 Nested tests
185 In KTAP, tests can be nested. This is done by having a test include within its
201 An example of a test with two nested subtests:
214 An example format with multiple levels of nested testing:
240 allows an arbitrary number of tests to be nested no yes
245 The TAP14 specification does permit nested tests, but instead of using another
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| /linux-6.12.1/net/netfilter/ipset/ |
| D | ip_set_bitmap_gen.h | 95 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()
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| /linux-6.12.1/Documentation/arch/x86/ |
| D | kernel-stacks.rst | 28 hardware interrupt (i.e. not a nested hardware interrupt) then the
54 nested IST interrupts then the handler must adjust the IST values on
59 nested. For example, a debug interrupt can safely be interrupted by an
62 IST events with the same code to be nested. However in most cases, the
95 To handle nested #DB correctly there exist two instances of DB stacks. On
97 so a nested #DB starts from a clean stack. The nested #DB switches
|