1 // SPDX-License-Identifier: GPL-2.0
2
3 #include <linux/errno.h>
4 #include <linux/smp.h>
5
6 #include "../hyperv.h"
7 #include "../cpuid.h"
8 #include "evmcs.h"
9 #include "vmcs.h"
10 #include "vmx.h"
11 #include "trace.h"
12
13 DEFINE_STATIC_KEY_FALSE(enable_evmcs);
14
15 #if IS_ENABLED(CONFIG_HYPERV)
16
17 #define EVMCS1_OFFSET(x) offsetof(struct hv_enlightened_vmcs, x)
18 #define EVMCS1_FIELD(number, name, clean_field)[ROL16(number, 6)] = \
19 {EVMCS1_OFFSET(name), clean_field}
20
21 const struct evmcs_field vmcs_field_to_evmcs_1[] = {
22 /* 64 bit rw */
23 EVMCS1_FIELD(GUEST_RIP, guest_rip,
24 HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
25 EVMCS1_FIELD(GUEST_RSP, guest_rsp,
26 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_BASIC),
27 EVMCS1_FIELD(GUEST_RFLAGS, guest_rflags,
28 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_BASIC),
29 EVMCS1_FIELD(HOST_IA32_PAT, host_ia32_pat,
30 HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
31 EVMCS1_FIELD(HOST_IA32_EFER, host_ia32_efer,
32 HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
33 EVMCS1_FIELD(HOST_CR0, host_cr0,
34 HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
35 EVMCS1_FIELD(HOST_CR3, host_cr3,
36 HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
37 EVMCS1_FIELD(HOST_CR4, host_cr4,
38 HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
39 EVMCS1_FIELD(HOST_IA32_SYSENTER_ESP, host_ia32_sysenter_esp,
40 HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
41 EVMCS1_FIELD(HOST_IA32_SYSENTER_EIP, host_ia32_sysenter_eip,
42 HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
43 EVMCS1_FIELD(HOST_RIP, host_rip,
44 HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
45 EVMCS1_FIELD(IO_BITMAP_A, io_bitmap_a,
46 HV_VMX_ENLIGHTENED_CLEAN_FIELD_IO_BITMAP),
47 EVMCS1_FIELD(IO_BITMAP_B, io_bitmap_b,
48 HV_VMX_ENLIGHTENED_CLEAN_FIELD_IO_BITMAP),
49 EVMCS1_FIELD(MSR_BITMAP, msr_bitmap,
50 HV_VMX_ENLIGHTENED_CLEAN_FIELD_MSR_BITMAP),
51 EVMCS1_FIELD(GUEST_ES_BASE, guest_es_base,
52 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
53 EVMCS1_FIELD(GUEST_CS_BASE, guest_cs_base,
54 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
55 EVMCS1_FIELD(GUEST_SS_BASE, guest_ss_base,
56 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
57 EVMCS1_FIELD(GUEST_DS_BASE, guest_ds_base,
58 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
59 EVMCS1_FIELD(GUEST_FS_BASE, guest_fs_base,
60 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
61 EVMCS1_FIELD(GUEST_GS_BASE, guest_gs_base,
62 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
63 EVMCS1_FIELD(GUEST_LDTR_BASE, guest_ldtr_base,
64 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
65 EVMCS1_FIELD(GUEST_TR_BASE, guest_tr_base,
66 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
67 EVMCS1_FIELD(GUEST_GDTR_BASE, guest_gdtr_base,
68 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
69 EVMCS1_FIELD(GUEST_IDTR_BASE, guest_idtr_base,
70 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
71 EVMCS1_FIELD(TSC_OFFSET, tsc_offset,
72 HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP2),
73 EVMCS1_FIELD(VIRTUAL_APIC_PAGE_ADDR, virtual_apic_page_addr,
74 HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP2),
75 EVMCS1_FIELD(VMCS_LINK_POINTER, vmcs_link_pointer,
76 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
77 EVMCS1_FIELD(GUEST_IA32_DEBUGCTL, guest_ia32_debugctl,
78 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
79 EVMCS1_FIELD(GUEST_IA32_PAT, guest_ia32_pat,
80 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
81 EVMCS1_FIELD(GUEST_IA32_EFER, guest_ia32_efer,
82 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
83 EVMCS1_FIELD(GUEST_PDPTR0, guest_pdptr0,
84 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
85 EVMCS1_FIELD(GUEST_PDPTR1, guest_pdptr1,
86 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
87 EVMCS1_FIELD(GUEST_PDPTR2, guest_pdptr2,
88 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
89 EVMCS1_FIELD(GUEST_PDPTR3, guest_pdptr3,
90 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
91 EVMCS1_FIELD(GUEST_PENDING_DBG_EXCEPTIONS, guest_pending_dbg_exceptions,
92 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
93 EVMCS1_FIELD(GUEST_SYSENTER_ESP, guest_sysenter_esp,
94 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
95 EVMCS1_FIELD(GUEST_SYSENTER_EIP, guest_sysenter_eip,
96 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
97 EVMCS1_FIELD(CR0_GUEST_HOST_MASK, cr0_guest_host_mask,
98 HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),
99 EVMCS1_FIELD(CR4_GUEST_HOST_MASK, cr4_guest_host_mask,
100 HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),
101 EVMCS1_FIELD(CR0_READ_SHADOW, cr0_read_shadow,
102 HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),
103 EVMCS1_FIELD(CR4_READ_SHADOW, cr4_read_shadow,
104 HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),
105 EVMCS1_FIELD(GUEST_CR0, guest_cr0,
106 HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),
107 EVMCS1_FIELD(GUEST_CR3, guest_cr3,
108 HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),
109 EVMCS1_FIELD(GUEST_CR4, guest_cr4,
110 HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),
111 EVMCS1_FIELD(GUEST_DR7, guest_dr7,
112 HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),
113 EVMCS1_FIELD(HOST_FS_BASE, host_fs_base,
114 HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_POINTER),
115 EVMCS1_FIELD(HOST_GS_BASE, host_gs_base,
116 HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_POINTER),
117 EVMCS1_FIELD(HOST_TR_BASE, host_tr_base,
118 HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_POINTER),
119 EVMCS1_FIELD(HOST_GDTR_BASE, host_gdtr_base,
120 HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_POINTER),
121 EVMCS1_FIELD(HOST_IDTR_BASE, host_idtr_base,
122 HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_POINTER),
123 EVMCS1_FIELD(HOST_RSP, host_rsp,
124 HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_POINTER),
125 EVMCS1_FIELD(EPT_POINTER, ept_pointer,
126 HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_XLAT),
127 EVMCS1_FIELD(GUEST_BNDCFGS, guest_bndcfgs,
128 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
129 EVMCS1_FIELD(XSS_EXIT_BITMAP, xss_exit_bitmap,
130 HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP2),
131
132 /* 64 bit read only */
133 EVMCS1_FIELD(GUEST_PHYSICAL_ADDRESS, guest_physical_address,
134 HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
135 EVMCS1_FIELD(EXIT_QUALIFICATION, exit_qualification,
136 HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
137 /*
138 * Not defined in KVM:
139 *
140 * EVMCS1_FIELD(0x00006402, exit_io_instruction_ecx,
141 * HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE);
142 * EVMCS1_FIELD(0x00006404, exit_io_instruction_esi,
143 * HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE);
144 * EVMCS1_FIELD(0x00006406, exit_io_instruction_esi,
145 * HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE);
146 * EVMCS1_FIELD(0x00006408, exit_io_instruction_eip,
147 * HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE);
148 */
149 EVMCS1_FIELD(GUEST_LINEAR_ADDRESS, guest_linear_address,
150 HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
151
152 /*
153 * No mask defined in the spec as Hyper-V doesn't currently support
154 * these. Future proof by resetting the whole clean field mask on
155 * access.
156 */
157 EVMCS1_FIELD(VM_EXIT_MSR_STORE_ADDR, vm_exit_msr_store_addr,
158 HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),
159 EVMCS1_FIELD(VM_EXIT_MSR_LOAD_ADDR, vm_exit_msr_load_addr,
160 HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),
161 EVMCS1_FIELD(VM_ENTRY_MSR_LOAD_ADDR, vm_entry_msr_load_addr,
162 HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),
163
164 /* 32 bit rw */
165 EVMCS1_FIELD(TPR_THRESHOLD, tpr_threshold,
166 HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
167 EVMCS1_FIELD(GUEST_INTERRUPTIBILITY_INFO, guest_interruptibility_info,
168 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_BASIC),
169 EVMCS1_FIELD(CPU_BASED_VM_EXEC_CONTROL, cpu_based_vm_exec_control,
170 HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_PROC),
171 EVMCS1_FIELD(EXCEPTION_BITMAP, exception_bitmap,
172 HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_EXCPN),
173 EVMCS1_FIELD(VM_ENTRY_CONTROLS, vm_entry_controls,
174 HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_ENTRY),
175 EVMCS1_FIELD(VM_ENTRY_INTR_INFO_FIELD, vm_entry_intr_info_field,
176 HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_EVENT),
177 EVMCS1_FIELD(VM_ENTRY_EXCEPTION_ERROR_CODE,
178 vm_entry_exception_error_code,
179 HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_EVENT),
180 EVMCS1_FIELD(VM_ENTRY_INSTRUCTION_LEN, vm_entry_instruction_len,
181 HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_EVENT),
182 EVMCS1_FIELD(HOST_IA32_SYSENTER_CS, host_ia32_sysenter_cs,
183 HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
184 EVMCS1_FIELD(PIN_BASED_VM_EXEC_CONTROL, pin_based_vm_exec_control,
185 HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP1),
186 EVMCS1_FIELD(VM_EXIT_CONTROLS, vm_exit_controls,
187 HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP1),
188 EVMCS1_FIELD(SECONDARY_VM_EXEC_CONTROL, secondary_vm_exec_control,
189 HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP1),
190 EVMCS1_FIELD(GUEST_ES_LIMIT, guest_es_limit,
191 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
192 EVMCS1_FIELD(GUEST_CS_LIMIT, guest_cs_limit,
193 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
194 EVMCS1_FIELD(GUEST_SS_LIMIT, guest_ss_limit,
195 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
196 EVMCS1_FIELD(GUEST_DS_LIMIT, guest_ds_limit,
197 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
198 EVMCS1_FIELD(GUEST_FS_LIMIT, guest_fs_limit,
199 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
200 EVMCS1_FIELD(GUEST_GS_LIMIT, guest_gs_limit,
201 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
202 EVMCS1_FIELD(GUEST_LDTR_LIMIT, guest_ldtr_limit,
203 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
204 EVMCS1_FIELD(GUEST_TR_LIMIT, guest_tr_limit,
205 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
206 EVMCS1_FIELD(GUEST_GDTR_LIMIT, guest_gdtr_limit,
207 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
208 EVMCS1_FIELD(GUEST_IDTR_LIMIT, guest_idtr_limit,
209 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
210 EVMCS1_FIELD(GUEST_ES_AR_BYTES, guest_es_ar_bytes,
211 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
212 EVMCS1_FIELD(GUEST_CS_AR_BYTES, guest_cs_ar_bytes,
213 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
214 EVMCS1_FIELD(GUEST_SS_AR_BYTES, guest_ss_ar_bytes,
215 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
216 EVMCS1_FIELD(GUEST_DS_AR_BYTES, guest_ds_ar_bytes,
217 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
218 EVMCS1_FIELD(GUEST_FS_AR_BYTES, guest_fs_ar_bytes,
219 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
220 EVMCS1_FIELD(GUEST_GS_AR_BYTES, guest_gs_ar_bytes,
221 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
222 EVMCS1_FIELD(GUEST_LDTR_AR_BYTES, guest_ldtr_ar_bytes,
223 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
224 EVMCS1_FIELD(GUEST_TR_AR_BYTES, guest_tr_ar_bytes,
225 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
226 EVMCS1_FIELD(GUEST_ACTIVITY_STATE, guest_activity_state,
227 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
228 EVMCS1_FIELD(GUEST_SYSENTER_CS, guest_sysenter_cs,
229 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
230
231 /* 32 bit read only */
232 EVMCS1_FIELD(VM_INSTRUCTION_ERROR, vm_instruction_error,
233 HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
234 EVMCS1_FIELD(VM_EXIT_REASON, vm_exit_reason,
235 HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
236 EVMCS1_FIELD(VM_EXIT_INTR_INFO, vm_exit_intr_info,
237 HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
238 EVMCS1_FIELD(VM_EXIT_INTR_ERROR_CODE, vm_exit_intr_error_code,
239 HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
240 EVMCS1_FIELD(IDT_VECTORING_INFO_FIELD, idt_vectoring_info_field,
241 HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
242 EVMCS1_FIELD(IDT_VECTORING_ERROR_CODE, idt_vectoring_error_code,
243 HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
244 EVMCS1_FIELD(VM_EXIT_INSTRUCTION_LEN, vm_exit_instruction_len,
245 HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
246 EVMCS1_FIELD(VMX_INSTRUCTION_INFO, vmx_instruction_info,
247 HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),
248
249 /* No mask defined in the spec (not used) */
250 EVMCS1_FIELD(PAGE_FAULT_ERROR_CODE_MASK, page_fault_error_code_mask,
251 HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),
252 EVMCS1_FIELD(PAGE_FAULT_ERROR_CODE_MATCH, page_fault_error_code_match,
253 HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),
254 EVMCS1_FIELD(CR3_TARGET_COUNT, cr3_target_count,
255 HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),
256 EVMCS1_FIELD(VM_EXIT_MSR_STORE_COUNT, vm_exit_msr_store_count,
257 HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),
258 EVMCS1_FIELD(VM_EXIT_MSR_LOAD_COUNT, vm_exit_msr_load_count,
259 HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),
260 EVMCS1_FIELD(VM_ENTRY_MSR_LOAD_COUNT, vm_entry_msr_load_count,
261 HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),
262
263 /* 16 bit rw */
264 EVMCS1_FIELD(HOST_ES_SELECTOR, host_es_selector,
265 HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
266 EVMCS1_FIELD(HOST_CS_SELECTOR, host_cs_selector,
267 HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
268 EVMCS1_FIELD(HOST_SS_SELECTOR, host_ss_selector,
269 HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
270 EVMCS1_FIELD(HOST_DS_SELECTOR, host_ds_selector,
271 HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
272 EVMCS1_FIELD(HOST_FS_SELECTOR, host_fs_selector,
273 HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
274 EVMCS1_FIELD(HOST_GS_SELECTOR, host_gs_selector,
275 HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
276 EVMCS1_FIELD(HOST_TR_SELECTOR, host_tr_selector,
277 HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
278 EVMCS1_FIELD(GUEST_ES_SELECTOR, guest_es_selector,
279 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
280 EVMCS1_FIELD(GUEST_CS_SELECTOR, guest_cs_selector,
281 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
282 EVMCS1_FIELD(GUEST_SS_SELECTOR, guest_ss_selector,
283 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
284 EVMCS1_FIELD(GUEST_DS_SELECTOR, guest_ds_selector,
285 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
286 EVMCS1_FIELD(GUEST_FS_SELECTOR, guest_fs_selector,
287 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
288 EVMCS1_FIELD(GUEST_GS_SELECTOR, guest_gs_selector,
289 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
290 EVMCS1_FIELD(GUEST_LDTR_SELECTOR, guest_ldtr_selector,
291 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
292 EVMCS1_FIELD(GUEST_TR_SELECTOR, guest_tr_selector,
293 HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),
294 EVMCS1_FIELD(VIRTUAL_PROCESSOR_ID, virtual_processor_id,
295 HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_XLAT),
296 };
297 const unsigned int nr_evmcs_1_fields = ARRAY_SIZE(vmcs_field_to_evmcs_1);
298
evmcs_sanitize_exec_ctrls(struct vmcs_config * vmcs_conf)299 __init void evmcs_sanitize_exec_ctrls(struct vmcs_config *vmcs_conf)
300 {
301 vmcs_conf->pin_based_exec_ctrl &= ~EVMCS1_UNSUPPORTED_PINCTRL;
302 vmcs_conf->cpu_based_2nd_exec_ctrl &= ~EVMCS1_UNSUPPORTED_2NDEXEC;
303
304 vmcs_conf->vmexit_ctrl &= ~EVMCS1_UNSUPPORTED_VMEXIT_CTRL;
305 vmcs_conf->vmentry_ctrl &= ~EVMCS1_UNSUPPORTED_VMENTRY_CTRL;
306 }
307 #endif
308
nested_enlightened_vmentry(struct kvm_vcpu * vcpu,u64 * evmcs_gpa)309 bool nested_enlightened_vmentry(struct kvm_vcpu *vcpu, u64 *evmcs_gpa)
310 {
311 struct hv_vp_assist_page assist_page;
312
313 *evmcs_gpa = -1ull;
314
315 if (unlikely(!kvm_hv_get_assist_page(vcpu, &assist_page)))
316 return false;
317
318 if (unlikely(!assist_page.enlighten_vmentry))
319 return false;
320
321 if (unlikely(!evmptr_is_valid(assist_page.current_nested_vmcs)))
322 return false;
323
324 *evmcs_gpa = assist_page.current_nested_vmcs;
325
326 return true;
327 }
328
nested_get_evmcs_version(struct kvm_vcpu * vcpu)329 uint16_t nested_get_evmcs_version(struct kvm_vcpu *vcpu)
330 {
331 /*
332 * vmcs_version represents the range of supported Enlightened VMCS
333 * versions: lower 8 bits is the minimal version, higher 8 bits is the
334 * maximum supported version. KVM supports versions from 1 to
335 * KVM_EVMCS_VERSION.
336 */
337 if (kvm_cpu_cap_get(X86_FEATURE_VMX) &&
338 (!vcpu || to_vmx(vcpu)->nested.enlightened_vmcs_enabled))
339 return (KVM_EVMCS_VERSION << 8) | 1;
340
341 return 0;
342 }
343
nested_evmcs_filter_control_msr(u32 msr_index,u64 * pdata)344 void nested_evmcs_filter_control_msr(u32 msr_index, u64 *pdata)
345 {
346 u32 ctl_low = (u32)*pdata;
347 u32 ctl_high = (u32)(*pdata >> 32);
348
349 /*
350 * Hyper-V 2016 and 2019 try using these features even when eVMCS
351 * is enabled but there are no corresponding fields.
352 */
353 switch (msr_index) {
354 case MSR_IA32_VMX_EXIT_CTLS:
355 case MSR_IA32_VMX_TRUE_EXIT_CTLS:
356 ctl_high &= ~EVMCS1_UNSUPPORTED_VMEXIT_CTRL;
357 break;
358 case MSR_IA32_VMX_ENTRY_CTLS:
359 case MSR_IA32_VMX_TRUE_ENTRY_CTLS:
360 ctl_high &= ~EVMCS1_UNSUPPORTED_VMENTRY_CTRL;
361 break;
362 case MSR_IA32_VMX_PROCBASED_CTLS2:
363 ctl_high &= ~EVMCS1_UNSUPPORTED_2NDEXEC;
364 break;
365 case MSR_IA32_VMX_TRUE_PINBASED_CTLS:
366 case MSR_IA32_VMX_PINBASED_CTLS:
367 ctl_high &= ~EVMCS1_UNSUPPORTED_PINCTRL;
368 break;
369 case MSR_IA32_VMX_VMFUNC:
370 ctl_low &= ~EVMCS1_UNSUPPORTED_VMFUNC;
371 break;
372 }
373
374 *pdata = ctl_low | ((u64)ctl_high << 32);
375 }
376
nested_evmcs_check_controls(struct vmcs12 * vmcs12)377 int nested_evmcs_check_controls(struct vmcs12 *vmcs12)
378 {
379 int ret = 0;
380 u32 unsupp_ctl;
381
382 unsupp_ctl = vmcs12->pin_based_vm_exec_control &
383 EVMCS1_UNSUPPORTED_PINCTRL;
384 if (unsupp_ctl) {
385 trace_kvm_nested_vmenter_failed(
386 "eVMCS: unsupported pin-based VM-execution controls",
387 unsupp_ctl);
388 ret = -EINVAL;
389 }
390
391 unsupp_ctl = vmcs12->secondary_vm_exec_control &
392 EVMCS1_UNSUPPORTED_2NDEXEC;
393 if (unsupp_ctl) {
394 trace_kvm_nested_vmenter_failed(
395 "eVMCS: unsupported secondary VM-execution controls",
396 unsupp_ctl);
397 ret = -EINVAL;
398 }
399
400 unsupp_ctl = vmcs12->vm_exit_controls &
401 EVMCS1_UNSUPPORTED_VMEXIT_CTRL;
402 if (unsupp_ctl) {
403 trace_kvm_nested_vmenter_failed(
404 "eVMCS: unsupported VM-exit controls",
405 unsupp_ctl);
406 ret = -EINVAL;
407 }
408
409 unsupp_ctl = vmcs12->vm_entry_controls &
410 EVMCS1_UNSUPPORTED_VMENTRY_CTRL;
411 if (unsupp_ctl) {
412 trace_kvm_nested_vmenter_failed(
413 "eVMCS: unsupported VM-entry controls",
414 unsupp_ctl);
415 ret = -EINVAL;
416 }
417
418 unsupp_ctl = vmcs12->vm_function_control & EVMCS1_UNSUPPORTED_VMFUNC;
419 if (unsupp_ctl) {
420 trace_kvm_nested_vmenter_failed(
421 "eVMCS: unsupported VM-function controls",
422 unsupp_ctl);
423 ret = -EINVAL;
424 }
425
426 return ret;
427 }
428
nested_enable_evmcs(struct kvm_vcpu * vcpu,uint16_t * vmcs_version)429 int nested_enable_evmcs(struct kvm_vcpu *vcpu,
430 uint16_t *vmcs_version)
431 {
432 struct vcpu_vmx *vmx = to_vmx(vcpu);
433
434 vmx->nested.enlightened_vmcs_enabled = true;
435
436 if (vmcs_version)
437 *vmcs_version = nested_get_evmcs_version(vcpu);
438
439 return 0;
440 }
441