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Diffstat (limited to 'tools/testing/selftests/kvm/lib/x86_64/vmx.c')
-rw-r--r--tools/testing/selftests/kvm/lib/x86_64/vmx.c554
1 files changed, 0 insertions, 554 deletions
diff --git a/tools/testing/selftests/kvm/lib/x86_64/vmx.c b/tools/testing/selftests/kvm/lib/x86_64/vmx.c
deleted file mode 100644
index 089b8925b6b2..000000000000
--- a/tools/testing/selftests/kvm/lib/x86_64/vmx.c
+++ /dev/null
@@ -1,554 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * tools/testing/selftests/kvm/lib/x86_64/vmx.c
- *
- * Copyright (C) 2018, Google LLC.
- */
-
-#include <asm/msr-index.h>
-
-#include "test_util.h"
-#include "kvm_util.h"
-#include "processor.h"
-#include "vmx.h"
-
-#define PAGE_SHIFT_4K 12
-
-#define KVM_EPT_PAGE_TABLE_MIN_PADDR 0x1c0000
-
-bool enable_evmcs;
-
-struct hv_enlightened_vmcs *current_evmcs;
-struct hv_vp_assist_page *current_vp_assist;
-
-struct eptPageTableEntry {
- uint64_t readable:1;
- uint64_t writable:1;
- uint64_t executable:1;
- uint64_t memory_type:3;
- uint64_t ignore_pat:1;
- uint64_t page_size:1;
- uint64_t accessed:1;
- uint64_t dirty:1;
- uint64_t ignored_11_10:2;
- uint64_t address:40;
- uint64_t ignored_62_52:11;
- uint64_t suppress_ve:1;
-};
-
-struct eptPageTablePointer {
- uint64_t memory_type:3;
- uint64_t page_walk_length:3;
- uint64_t ad_enabled:1;
- uint64_t reserved_11_07:5;
- uint64_t address:40;
- uint64_t reserved_63_52:12;
-};
-int vcpu_enable_evmcs(struct kvm_vcpu *vcpu)
-{
- uint16_t evmcs_ver;
-
- vcpu_enable_cap(vcpu, KVM_CAP_HYPERV_ENLIGHTENED_VMCS,
- (unsigned long)&evmcs_ver);
-
- /* KVM should return supported EVMCS version range */
- TEST_ASSERT(((evmcs_ver >> 8) >= (evmcs_ver & 0xff)) &&
- (evmcs_ver & 0xff) > 0,
- "Incorrect EVMCS version range: %x:%x",
- evmcs_ver & 0xff, evmcs_ver >> 8);
-
- return evmcs_ver;
-}
-
-/* Allocate memory regions for nested VMX tests.
- *
- * Input Args:
- * vm - The VM to allocate guest-virtual addresses in.
- *
- * Output Args:
- * p_vmx_gva - The guest virtual address for the struct vmx_pages.
- *
- * Return:
- * Pointer to structure with the addresses of the VMX areas.
- */
-struct vmx_pages *
-vcpu_alloc_vmx(struct kvm_vm *vm, vm_vaddr_t *p_vmx_gva)
-{
- vm_vaddr_t vmx_gva = vm_vaddr_alloc_page(vm);
- struct vmx_pages *vmx = addr_gva2hva(vm, vmx_gva);
-
- /* Setup of a region of guest memory for the vmxon region. */
- vmx->vmxon = (void *)vm_vaddr_alloc_page(vm);
- vmx->vmxon_hva = addr_gva2hva(vm, (uintptr_t)vmx->vmxon);
- vmx->vmxon_gpa = addr_gva2gpa(vm, (uintptr_t)vmx->vmxon);
-
- /* Setup of a region of guest memory for a vmcs. */
- vmx->vmcs = (void *)vm_vaddr_alloc_page(vm);
- vmx->vmcs_hva = addr_gva2hva(vm, (uintptr_t)vmx->vmcs);
- vmx->vmcs_gpa = addr_gva2gpa(vm, (uintptr_t)vmx->vmcs);
-
- /* Setup of a region of guest memory for the MSR bitmap. */
- vmx->msr = (void *)vm_vaddr_alloc_page(vm);
- vmx->msr_hva = addr_gva2hva(vm, (uintptr_t)vmx->msr);
- vmx->msr_gpa = addr_gva2gpa(vm, (uintptr_t)vmx->msr);
- memset(vmx->msr_hva, 0, getpagesize());
-
- /* Setup of a region of guest memory for the shadow VMCS. */
- vmx->shadow_vmcs = (void *)vm_vaddr_alloc_page(vm);
- vmx->shadow_vmcs_hva = addr_gva2hva(vm, (uintptr_t)vmx->shadow_vmcs);
- vmx->shadow_vmcs_gpa = addr_gva2gpa(vm, (uintptr_t)vmx->shadow_vmcs);
-
- /* Setup of a region of guest memory for the VMREAD and VMWRITE bitmaps. */
- vmx->vmread = (void *)vm_vaddr_alloc_page(vm);
- vmx->vmread_hva = addr_gva2hva(vm, (uintptr_t)vmx->vmread);
- vmx->vmread_gpa = addr_gva2gpa(vm, (uintptr_t)vmx->vmread);
- memset(vmx->vmread_hva, 0, getpagesize());
-
- vmx->vmwrite = (void *)vm_vaddr_alloc_page(vm);
- vmx->vmwrite_hva = addr_gva2hva(vm, (uintptr_t)vmx->vmwrite);
- vmx->vmwrite_gpa = addr_gva2gpa(vm, (uintptr_t)vmx->vmwrite);
- memset(vmx->vmwrite_hva, 0, getpagesize());
-
- *p_vmx_gva = vmx_gva;
- return vmx;
-}
-
-bool prepare_for_vmx_operation(struct vmx_pages *vmx)
-{
- uint64_t feature_control;
- uint64_t required;
- unsigned long cr0;
- unsigned long cr4;
-
- /*
- * Ensure bits in CR0 and CR4 are valid in VMX operation:
- * - Bit X is 1 in _FIXED0: bit X is fixed to 1 in CRx.
- * - Bit X is 0 in _FIXED1: bit X is fixed to 0 in CRx.
- */
- __asm__ __volatile__("mov %%cr0, %0" : "=r"(cr0) : : "memory");
- cr0 &= rdmsr(MSR_IA32_VMX_CR0_FIXED1);
- cr0 |= rdmsr(MSR_IA32_VMX_CR0_FIXED0);
- __asm__ __volatile__("mov %0, %%cr0" : : "r"(cr0) : "memory");
-
- __asm__ __volatile__("mov %%cr4, %0" : "=r"(cr4) : : "memory");
- cr4 &= rdmsr(MSR_IA32_VMX_CR4_FIXED1);
- cr4 |= rdmsr(MSR_IA32_VMX_CR4_FIXED0);
- /* Enable VMX operation */
- cr4 |= X86_CR4_VMXE;
- __asm__ __volatile__("mov %0, %%cr4" : : "r"(cr4) : "memory");
-
- /*
- * Configure IA32_FEATURE_CONTROL MSR to allow VMXON:
- * Bit 0: Lock bit. If clear, VMXON causes a #GP.
- * Bit 2: Enables VMXON outside of SMX operation. If clear, VMXON
- * outside of SMX causes a #GP.
- */
- required = FEAT_CTL_VMX_ENABLED_OUTSIDE_SMX;
- required |= FEAT_CTL_LOCKED;
- feature_control = rdmsr(MSR_IA32_FEAT_CTL);
- if ((feature_control & required) != required)
- wrmsr(MSR_IA32_FEAT_CTL, feature_control | required);
-
- /* Enter VMX root operation. */
- *(uint32_t *)(vmx->vmxon) = vmcs_revision();
- if (vmxon(vmx->vmxon_gpa))
- return false;
-
- return true;
-}
-
-bool load_vmcs(struct vmx_pages *vmx)
-{
- /* Load a VMCS. */
- *(uint32_t *)(vmx->vmcs) = vmcs_revision();
- if (vmclear(vmx->vmcs_gpa))
- return false;
-
- if (vmptrld(vmx->vmcs_gpa))
- return false;
-
- /* Setup shadow VMCS, do not load it yet. */
- *(uint32_t *)(vmx->shadow_vmcs) = vmcs_revision() | 0x80000000ul;
- if (vmclear(vmx->shadow_vmcs_gpa))
- return false;
-
- return true;
-}
-
-static bool ept_vpid_cap_supported(uint64_t mask)
-{
- return rdmsr(MSR_IA32_VMX_EPT_VPID_CAP) & mask;
-}
-
-bool ept_1g_pages_supported(void)
-{
- return ept_vpid_cap_supported(VMX_EPT_VPID_CAP_1G_PAGES);
-}
-
-/*
- * Initialize the control fields to the most basic settings possible.
- */
-static inline void init_vmcs_control_fields(struct vmx_pages *vmx)
-{
- uint32_t sec_exec_ctl = 0;
-
- vmwrite(VIRTUAL_PROCESSOR_ID, 0);
- vmwrite(POSTED_INTR_NV, 0);
-
- vmwrite(PIN_BASED_VM_EXEC_CONTROL, rdmsr(MSR_IA32_VMX_TRUE_PINBASED_CTLS));
-
- if (vmx->eptp_gpa) {
- uint64_t ept_paddr;
- struct eptPageTablePointer eptp = {
- .memory_type = VMX_BASIC_MEM_TYPE_WB,
- .page_walk_length = 3, /* + 1 */
- .ad_enabled = ept_vpid_cap_supported(VMX_EPT_VPID_CAP_AD_BITS),
- .address = vmx->eptp_gpa >> PAGE_SHIFT_4K,
- };
-
- memcpy(&ept_paddr, &eptp, sizeof(ept_paddr));
- vmwrite(EPT_POINTER, ept_paddr);
- sec_exec_ctl |= SECONDARY_EXEC_ENABLE_EPT;
- }
-
- if (!vmwrite(SECONDARY_VM_EXEC_CONTROL, sec_exec_ctl))
- vmwrite(CPU_BASED_VM_EXEC_CONTROL,
- rdmsr(MSR_IA32_VMX_TRUE_PROCBASED_CTLS) | CPU_BASED_ACTIVATE_SECONDARY_CONTROLS);
- else {
- vmwrite(CPU_BASED_VM_EXEC_CONTROL, rdmsr(MSR_IA32_VMX_TRUE_PROCBASED_CTLS));
- GUEST_ASSERT(!sec_exec_ctl);
- }
-
- vmwrite(EXCEPTION_BITMAP, 0);
- vmwrite(PAGE_FAULT_ERROR_CODE_MASK, 0);
- vmwrite(PAGE_FAULT_ERROR_CODE_MATCH, -1); /* Never match */
- vmwrite(CR3_TARGET_COUNT, 0);
- vmwrite(VM_EXIT_CONTROLS, rdmsr(MSR_IA32_VMX_EXIT_CTLS) |
- VM_EXIT_HOST_ADDR_SPACE_SIZE); /* 64-bit host */
- vmwrite(VM_EXIT_MSR_STORE_COUNT, 0);
- vmwrite(VM_EXIT_MSR_LOAD_COUNT, 0);
- vmwrite(VM_ENTRY_CONTROLS, rdmsr(MSR_IA32_VMX_ENTRY_CTLS) |
- VM_ENTRY_IA32E_MODE); /* 64-bit guest */
- vmwrite(VM_ENTRY_MSR_LOAD_COUNT, 0);
- vmwrite(VM_ENTRY_INTR_INFO_FIELD, 0);
- vmwrite(TPR_THRESHOLD, 0);
-
- vmwrite(CR0_GUEST_HOST_MASK, 0);
- vmwrite(CR4_GUEST_HOST_MASK, 0);
- vmwrite(CR0_READ_SHADOW, get_cr0());
- vmwrite(CR4_READ_SHADOW, get_cr4());
-
- vmwrite(MSR_BITMAP, vmx->msr_gpa);
- vmwrite(VMREAD_BITMAP, vmx->vmread_gpa);
- vmwrite(VMWRITE_BITMAP, vmx->vmwrite_gpa);
-}
-
-/*
- * Initialize the host state fields based on the current host state, with
- * the exception of HOST_RSP and HOST_RIP, which should be set by vmlaunch
- * or vmresume.
- */
-static inline void init_vmcs_host_state(void)
-{
- uint32_t exit_controls = vmreadz(VM_EXIT_CONTROLS);
-
- vmwrite(HOST_ES_SELECTOR, get_es());
- vmwrite(HOST_CS_SELECTOR, get_cs());
- vmwrite(HOST_SS_SELECTOR, get_ss());
- vmwrite(HOST_DS_SELECTOR, get_ds());
- vmwrite(HOST_FS_SELECTOR, get_fs());
- vmwrite(HOST_GS_SELECTOR, get_gs());
- vmwrite(HOST_TR_SELECTOR, get_tr());
-
- if (exit_controls & VM_EXIT_LOAD_IA32_PAT)
- vmwrite(HOST_IA32_PAT, rdmsr(MSR_IA32_CR_PAT));
- if (exit_controls & VM_EXIT_LOAD_IA32_EFER)
- vmwrite(HOST_IA32_EFER, rdmsr(MSR_EFER));
- if (exit_controls & VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL)
- vmwrite(HOST_IA32_PERF_GLOBAL_CTRL,
- rdmsr(MSR_CORE_PERF_GLOBAL_CTRL));
-
- vmwrite(HOST_IA32_SYSENTER_CS, rdmsr(MSR_IA32_SYSENTER_CS));
-
- vmwrite(HOST_CR0, get_cr0());
- vmwrite(HOST_CR3, get_cr3());
- vmwrite(HOST_CR4, get_cr4());
- vmwrite(HOST_FS_BASE, rdmsr(MSR_FS_BASE));
- vmwrite(HOST_GS_BASE, rdmsr(MSR_GS_BASE));
- vmwrite(HOST_TR_BASE,
- get_desc64_base((struct desc64 *)(get_gdt().address + get_tr())));
- vmwrite(HOST_GDTR_BASE, get_gdt().address);
- vmwrite(HOST_IDTR_BASE, get_idt().address);
- vmwrite(HOST_IA32_SYSENTER_ESP, rdmsr(MSR_IA32_SYSENTER_ESP));
- vmwrite(HOST_IA32_SYSENTER_EIP, rdmsr(MSR_IA32_SYSENTER_EIP));
-}
-
-/*
- * Initialize the guest state fields essentially as a clone of
- * the host state fields. Some host state fields have fixed
- * values, and we set the corresponding guest state fields accordingly.
- */
-static inline void init_vmcs_guest_state(void *rip, void *rsp)
-{
- vmwrite(GUEST_ES_SELECTOR, vmreadz(HOST_ES_SELECTOR));
- vmwrite(GUEST_CS_SELECTOR, vmreadz(HOST_CS_SELECTOR));
- vmwrite(GUEST_SS_SELECTOR, vmreadz(HOST_SS_SELECTOR));
- vmwrite(GUEST_DS_SELECTOR, vmreadz(HOST_DS_SELECTOR));
- vmwrite(GUEST_FS_SELECTOR, vmreadz(HOST_FS_SELECTOR));
- vmwrite(GUEST_GS_SELECTOR, vmreadz(HOST_GS_SELECTOR));
- vmwrite(GUEST_LDTR_SELECTOR, 0);
- vmwrite(GUEST_TR_SELECTOR, vmreadz(HOST_TR_SELECTOR));
- vmwrite(GUEST_INTR_STATUS, 0);
- vmwrite(GUEST_PML_INDEX, 0);
-
- vmwrite(VMCS_LINK_POINTER, -1ll);
- vmwrite(GUEST_IA32_DEBUGCTL, 0);
- vmwrite(GUEST_IA32_PAT, vmreadz(HOST_IA32_PAT));
- vmwrite(GUEST_IA32_EFER, vmreadz(HOST_IA32_EFER));
- vmwrite(GUEST_IA32_PERF_GLOBAL_CTRL,
- vmreadz(HOST_IA32_PERF_GLOBAL_CTRL));
-
- vmwrite(GUEST_ES_LIMIT, -1);
- vmwrite(GUEST_CS_LIMIT, -1);
- vmwrite(GUEST_SS_LIMIT, -1);
- vmwrite(GUEST_DS_LIMIT, -1);
- vmwrite(GUEST_FS_LIMIT, -1);
- vmwrite(GUEST_GS_LIMIT, -1);
- vmwrite(GUEST_LDTR_LIMIT, -1);
- vmwrite(GUEST_TR_LIMIT, 0x67);
- vmwrite(GUEST_GDTR_LIMIT, 0xffff);
- vmwrite(GUEST_IDTR_LIMIT, 0xffff);
- vmwrite(GUEST_ES_AR_BYTES,
- vmreadz(GUEST_ES_SELECTOR) == 0 ? 0x10000 : 0xc093);
- vmwrite(GUEST_CS_AR_BYTES, 0xa09b);
- vmwrite(GUEST_SS_AR_BYTES, 0xc093);
- vmwrite(GUEST_DS_AR_BYTES,
- vmreadz(GUEST_DS_SELECTOR) == 0 ? 0x10000 : 0xc093);
- vmwrite(GUEST_FS_AR_BYTES,
- vmreadz(GUEST_FS_SELECTOR) == 0 ? 0x10000 : 0xc093);
- vmwrite(GUEST_GS_AR_BYTES,
- vmreadz(GUEST_GS_SELECTOR) == 0 ? 0x10000 : 0xc093);
- vmwrite(GUEST_LDTR_AR_BYTES, 0x10000);
- vmwrite(GUEST_TR_AR_BYTES, 0x8b);
- vmwrite(GUEST_INTERRUPTIBILITY_INFO, 0);
- vmwrite(GUEST_ACTIVITY_STATE, 0);
- vmwrite(GUEST_SYSENTER_CS, vmreadz(HOST_IA32_SYSENTER_CS));
- vmwrite(VMX_PREEMPTION_TIMER_VALUE, 0);
-
- vmwrite(GUEST_CR0, vmreadz(HOST_CR0));
- vmwrite(GUEST_CR3, vmreadz(HOST_CR3));
- vmwrite(GUEST_CR4, vmreadz(HOST_CR4));
- vmwrite(GUEST_ES_BASE, 0);
- vmwrite(GUEST_CS_BASE, 0);
- vmwrite(GUEST_SS_BASE, 0);
- vmwrite(GUEST_DS_BASE, 0);
- vmwrite(GUEST_FS_BASE, vmreadz(HOST_FS_BASE));
- vmwrite(GUEST_GS_BASE, vmreadz(HOST_GS_BASE));
- vmwrite(GUEST_LDTR_BASE, 0);
- vmwrite(GUEST_TR_BASE, vmreadz(HOST_TR_BASE));
- vmwrite(GUEST_GDTR_BASE, vmreadz(HOST_GDTR_BASE));
- vmwrite(GUEST_IDTR_BASE, vmreadz(HOST_IDTR_BASE));
- vmwrite(GUEST_DR7, 0x400);
- vmwrite(GUEST_RSP, (uint64_t)rsp);
- vmwrite(GUEST_RIP, (uint64_t)rip);
- vmwrite(GUEST_RFLAGS, 2);
- vmwrite(GUEST_PENDING_DBG_EXCEPTIONS, 0);
- vmwrite(GUEST_SYSENTER_ESP, vmreadz(HOST_IA32_SYSENTER_ESP));
- vmwrite(GUEST_SYSENTER_EIP, vmreadz(HOST_IA32_SYSENTER_EIP));
-}
-
-void prepare_vmcs(struct vmx_pages *vmx, void *guest_rip, void *guest_rsp)
-{
- init_vmcs_control_fields(vmx);
- init_vmcs_host_state();
- init_vmcs_guest_state(guest_rip, guest_rsp);
-}
-
-static void nested_create_pte(struct kvm_vm *vm,
- struct eptPageTableEntry *pte,
- uint64_t nested_paddr,
- uint64_t paddr,
- int current_level,
- int target_level)
-{
- if (!pte->readable) {
- pte->writable = true;
- pte->readable = true;
- pte->executable = true;
- pte->page_size = (current_level == target_level);
- if (pte->page_size)
- pte->address = paddr >> vm->page_shift;
- else
- pte->address = vm_alloc_page_table(vm) >> vm->page_shift;
- } else {
- /*
- * Entry already present. Assert that the caller doesn't want
- * a hugepage at this level, and that there isn't a hugepage at
- * this level.
- */
- TEST_ASSERT(current_level != target_level,
- "Cannot create hugepage at level: %u, nested_paddr: 0x%lx",
- current_level, nested_paddr);
- TEST_ASSERT(!pte->page_size,
- "Cannot create page table at level: %u, nested_paddr: 0x%lx",
- current_level, nested_paddr);
- }
-}
-
-
-void __nested_pg_map(struct vmx_pages *vmx, struct kvm_vm *vm,
- uint64_t nested_paddr, uint64_t paddr, int target_level)
-{
- const uint64_t page_size = PG_LEVEL_SIZE(target_level);
- struct eptPageTableEntry *pt = vmx->eptp_hva, *pte;
- uint16_t index;
-
- TEST_ASSERT(vm->mode == VM_MODE_PXXV48_4K, "Attempt to use "
- "unknown or unsupported guest mode, mode: 0x%x", vm->mode);
-
- TEST_ASSERT((nested_paddr >> 48) == 0,
- "Nested physical address 0x%lx requires 5-level paging",
- nested_paddr);
- TEST_ASSERT((nested_paddr % page_size) == 0,
- "Nested physical address not on page boundary,\n"
- " nested_paddr: 0x%lx page_size: 0x%lx",
- nested_paddr, page_size);
- TEST_ASSERT((nested_paddr >> vm->page_shift) <= vm->max_gfn,
- "Physical address beyond beyond maximum supported,\n"
- " nested_paddr: 0x%lx vm->max_gfn: 0x%lx vm->page_size: 0x%x",
- paddr, vm->max_gfn, vm->page_size);
- TEST_ASSERT((paddr % page_size) == 0,
- "Physical address not on page boundary,\n"
- " paddr: 0x%lx page_size: 0x%lx",
- paddr, page_size);
- TEST_ASSERT((paddr >> vm->page_shift) <= vm->max_gfn,
- "Physical address beyond beyond maximum supported,\n"
- " paddr: 0x%lx vm->max_gfn: 0x%lx vm->page_size: 0x%x",
- paddr, vm->max_gfn, vm->page_size);
-
- for (int level = PG_LEVEL_512G; level >= PG_LEVEL_4K; level--) {
- index = (nested_paddr >> PG_LEVEL_SHIFT(level)) & 0x1ffu;
- pte = &pt[index];
-
- nested_create_pte(vm, pte, nested_paddr, paddr, level, target_level);
-
- if (pte->page_size)
- break;
-
- pt = addr_gpa2hva(vm, pte->address * vm->page_size);
- }
-
- /*
- * For now mark these as accessed and dirty because the only
- * testcase we have needs that. Can be reconsidered later.
- */
- pte->accessed = true;
- pte->dirty = true;
-
-}
-
-void nested_pg_map(struct vmx_pages *vmx, struct kvm_vm *vm,
- uint64_t nested_paddr, uint64_t paddr)
-{
- __nested_pg_map(vmx, vm, nested_paddr, paddr, PG_LEVEL_4K);
-}
-
-/*
- * Map a range of EPT guest physical addresses to the VM's physical address
- *
- * Input Args:
- * vm - Virtual Machine
- * nested_paddr - Nested guest physical address to map
- * paddr - VM Physical Address
- * size - The size of the range to map
- * level - The level at which to map the range
- *
- * Output Args: None
- *
- * Return: None
- *
- * Within the VM given by vm, creates a nested guest translation for the
- * page range starting at nested_paddr to the page range starting at paddr.
- */
-void __nested_map(struct vmx_pages *vmx, struct kvm_vm *vm,
- uint64_t nested_paddr, uint64_t paddr, uint64_t size,
- int level)
-{
- size_t page_size = PG_LEVEL_SIZE(level);
- size_t npages = size / page_size;
-
- TEST_ASSERT(nested_paddr + size > nested_paddr, "Vaddr overflow");
- TEST_ASSERT(paddr + size > paddr, "Paddr overflow");
-
- while (npages--) {
- __nested_pg_map(vmx, vm, nested_paddr, paddr, level);
- nested_paddr += page_size;
- paddr += page_size;
- }
-}
-
-void nested_map(struct vmx_pages *vmx, struct kvm_vm *vm,
- uint64_t nested_paddr, uint64_t paddr, uint64_t size)
-{
- __nested_map(vmx, vm, nested_paddr, paddr, size, PG_LEVEL_4K);
-}
-
-/* Prepare an identity extended page table that maps all the
- * physical pages in VM.
- */
-void nested_map_memslot(struct vmx_pages *vmx, struct kvm_vm *vm,
- uint32_t memslot)
-{
- sparsebit_idx_t i, last;
- struct userspace_mem_region *region =
- memslot2region(vm, memslot);
-
- i = (region->region.guest_phys_addr >> vm->page_shift) - 1;
- last = i + (region->region.memory_size >> vm->page_shift);
- for (;;) {
- i = sparsebit_next_clear(region->unused_phy_pages, i);
- if (i > last)
- break;
-
- nested_map(vmx, vm,
- (uint64_t)i << vm->page_shift,
- (uint64_t)i << vm->page_shift,
- 1 << vm->page_shift);
- }
-}
-
-/* Identity map a region with 1GiB Pages. */
-void nested_identity_map_1g(struct vmx_pages *vmx, struct kvm_vm *vm,
- uint64_t addr, uint64_t size)
-{
- __nested_map(vmx, vm, addr, addr, size, PG_LEVEL_1G);
-}
-
-bool kvm_cpu_has_ept(void)
-{
- uint64_t ctrl;
-
- ctrl = kvm_get_feature_msr(MSR_IA32_VMX_TRUE_PROCBASED_CTLS) >> 32;
- if (!(ctrl & CPU_BASED_ACTIVATE_SECONDARY_CONTROLS))
- return false;
-
- ctrl = kvm_get_feature_msr(MSR_IA32_VMX_PROCBASED_CTLS2) >> 32;
- return ctrl & SECONDARY_EXEC_ENABLE_EPT;
-}
-
-void prepare_eptp(struct vmx_pages *vmx, struct kvm_vm *vm,
- uint32_t eptp_memslot)
-{
- TEST_ASSERT(kvm_cpu_has_ept(), "KVM doesn't support nested EPT");
-
- vmx->eptp = (void *)vm_vaddr_alloc_page(vm);
- vmx->eptp_hva = addr_gva2hva(vm, (uintptr_t)vmx->eptp);
- vmx->eptp_gpa = addr_gva2gpa(vm, (uintptr_t)vmx->eptp);
-}
-
-void prepare_virtualize_apic_accesses(struct vmx_pages *vmx, struct kvm_vm *vm)
-{
- vmx->apic_access = (void *)vm_vaddr_alloc_page(vm);
- vmx->apic_access_hva = addr_gva2hva(vm, (uintptr_t)vmx->apic_access);
- vmx->apic_access_gpa = addr_gva2gpa(vm, (uintptr_t)vmx->apic_access);
-}
generated by cgit (git 2.34.1) at 2025-07-31 07:54:24 +0000