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x86/kvm/mmu: make vcpu->mmu a pointer to the current MMU

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As a preparation to full MMU split between L1 and L2 make vcpu->arch.mmu
a pointer to the currently used mmu. For now, this is always
vcpu->arch.root_mmu. No functional change.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Sean Christopherson <sean.j.christopherson@intel.com>
This commit is contained in:
Vitaly Kuznetsov 2018-10-08 21:28:05 +02:00 committed by Paolo Bonzini
parent 0e0a53c551
commit 44dd3ffa7b
8 changed files with 130 additions and 124 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
arch/x86/include/asm/kvm_host.h
View File

@ -543,7 +543,10 @@ struct kvm_vcpu_arch {
* the paging mode of the l1 guest. This context is always used to
* handle faults.
*/
struct kvm_mmu mmu;
struct kvm_mmu *mmu;
/* Non-nested MMU for L1 */
struct kvm_mmu root_mmu;
/*
* Paging state of an L2 guest (used for nested npt)

165
arch/x86/kvm/mmu.c
View File

@ -2181,7 +2181,7 @@ static bool __kvm_sync_page(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
struct list_head *invalid_list)
{
if (sp->role.cr4_pae != !!is_pae(vcpu)
|| vcpu->arch.mmu.sync_page(vcpu, sp) == 0) {
|| vcpu->arch.mmu->sync_page(vcpu, sp) == 0) {
kvm_mmu_prepare_zap_page(vcpu->kvm, sp, invalid_list);
return false;
}
@ -2375,14 +2375,14 @@ static struct kvm_mmu_page *kvm_mmu_get_page(struct kvm_vcpu *vcpu,
int collisions = 0;
LIST_HEAD(invalid_list);
role = vcpu->arch.mmu.base_role;
role = vcpu->arch.mmu->base_role;
role.level = level;
role.direct = direct;
if (role.direct)
role.cr4_pae = 0;
role.access = access;
if (!vcpu->arch.mmu.direct_map
&& vcpu->arch.mmu.root_level <= PT32_ROOT_LEVEL) {
if (!vcpu->arch.mmu->direct_map
&& vcpu->arch.mmu->root_level <= PT32_ROOT_LEVEL) {
quadrant = gaddr >> (PAGE_SHIFT + (PT64_PT_BITS * level));
quadrant &= (1 << ((PT32_PT_BITS - PT64_PT_BITS) * level)) - 1;
role.quadrant = quadrant;
@ -2457,11 +2457,11 @@ static void shadow_walk_init_using_root(struct kvm_shadow_walk_iterator *iterato
{
iterator->addr = addr;
iterator->shadow_addr = root;
iterator->level = vcpu->arch.mmu.shadow_root_level;
iterator->level = vcpu->arch.mmu->shadow_root_level;
if (iterator->level == PT64_ROOT_4LEVEL &&
vcpu->arch.mmu.root_level < PT64_ROOT_4LEVEL &&
!vcpu->arch.mmu.direct_map)
vcpu->arch.mmu->root_level < PT64_ROOT_4LEVEL &&
!vcpu->arch.mmu->direct_map)
--iterator->level;
if (iterator->level == PT32E_ROOT_LEVEL) {
@ -2469,10 +2469,10 @@ static void shadow_walk_init_using_root(struct kvm_shadow_walk_iterator *iterato
* prev_root is currently only used for 64-bit hosts. So only
* the active root_hpa is valid here.
*/
BUG_ON(root != vcpu->arch.mmu.root_hpa);
BUG_ON(root != vcpu->arch.mmu->root_hpa);
iterator->shadow_addr
= vcpu->arch.mmu.pae_root[(addr >> 30) & 3];
= vcpu->arch.mmu->pae_root[(addr >> 30) & 3];
iterator->shadow_addr &= PT64_BASE_ADDR_MASK;
--iterator->level;
if (!iterator->shadow_addr)
@ -2483,7 +2483,7 @@ static void shadow_walk_init_using_root(struct kvm_shadow_walk_iterator *iterato
static void shadow_walk_init(struct kvm_shadow_walk_iterator *iterator,
struct kvm_vcpu *vcpu, u64 addr)
{
shadow_walk_init_using_root(iterator, vcpu, vcpu->arch.mmu.root_hpa,
shadow_walk_init_using_root(iterator, vcpu, vcpu->arch.mmu->root_hpa,
addr);
}
@ -3095,7 +3095,7 @@ static int __direct_map(struct kvm_vcpu *vcpu, int write, int map_writable,
int emulate = 0;
gfn_t pseudo_gfn;
if (!VALID_PAGE(vcpu->arch.mmu.root_hpa))
if (!VALID_PAGE(vcpu->arch.mmu->root_hpa))
return 0;
for_each_shadow_entry(vcpu, (u64)gfn << PAGE_SHIFT, iterator) {
@ -3310,7 +3310,7 @@ static bool fast_page_fault(struct kvm_vcpu *vcpu, gva_t gva, int level,
u64 spte = 0ull;
uint retry_count = 0;
if (!VALID_PAGE(vcpu->arch.mmu.root_hpa))
if (!VALID_PAGE(vcpu->arch.mmu->root_hpa))
return false;
if (!page_fault_can_be_fast(error_code))
@ -3484,7 +3484,7 @@ void kvm_mmu_free_roots(struct kvm_vcpu *vcpu, ulong roots_to_free)
{
int i;
LIST_HEAD(invalid_list);
struct kvm_mmu *mmu = &vcpu->arch.mmu;
struct kvm_mmu *mmu = vcpu->arch.mmu;
bool free_active_root = roots_to_free & KVM_MMU_ROOT_CURRENT;
BUILD_BUG_ON(KVM_MMU_NUM_PREV_ROOTS >= BITS_PER_LONG);
@ -3544,20 +3544,20 @@ static int mmu_alloc_direct_roots(struct kvm_vcpu *vcpu)
struct kvm_mmu_page *sp;
unsigned i;
if (vcpu->arch.mmu.shadow_root_level >= PT64_ROOT_4LEVEL) {
if (vcpu->arch.mmu->shadow_root_level >= PT64_ROOT_4LEVEL) {
spin_lock(&vcpu->kvm->mmu_lock);
if(make_mmu_pages_available(vcpu) < 0) {
spin_unlock(&vcpu->kvm->mmu_lock);
return -ENOSPC;
}
sp = kvm_mmu_get_page(vcpu, 0, 0,
vcpu->arch.mmu.shadow_root_level, 1, ACC_ALL);
vcpu->arch.mmu->shadow_root_level, 1, ACC_ALL);
++sp->root_count;
spin_unlock(&vcpu->kvm->mmu_lock);
vcpu->arch.mmu.root_hpa = __pa(sp->spt);
} else if (vcpu->arch.mmu.shadow_root_level == PT32E_ROOT_LEVEL) {
vcpu->arch.mmu->root_hpa = __pa(sp->spt);
} else if (vcpu->arch.mmu->shadow_root_level == PT32E_ROOT_LEVEL) {
for (i = 0; i < 4; ++i) {
hpa_t root = vcpu->arch.mmu.pae_root[i];
hpa_t root = vcpu->arch.mmu->pae_root[i];
MMU_WARN_ON(VALID_PAGE(root));
spin_lock(&vcpu->kvm->mmu_lock);
@ -3570,9 +3570,9 @@ static int mmu_alloc_direct_roots(struct kvm_vcpu *vcpu)
root = __pa(sp->spt);
++sp->root_count;
spin_unlock(&vcpu->kvm->mmu_lock);
vcpu->arch.mmu.pae_root[i] = root | PT_PRESENT_MASK;
vcpu->arch.mmu->pae_root[i] = root | PT_PRESENT_MASK;
}
vcpu->arch.mmu.root_hpa = __pa(vcpu->arch.mmu.pae_root);
vcpu->arch.mmu->root_hpa = __pa(vcpu->arch.mmu->pae_root);
} else
BUG();
@ -3586,7 +3586,7 @@ static int mmu_alloc_shadow_roots(struct kvm_vcpu *vcpu)
gfn_t root_gfn;
int i;
root_gfn = vcpu->arch.mmu.get_cr3(vcpu) >> PAGE_SHIFT;
root_gfn = vcpu->arch.mmu->get_cr3(vcpu) >> PAGE_SHIFT;
if (mmu_check_root(vcpu, root_gfn))
return 1;
@ -3595,8 +3595,8 @@ static int mmu_alloc_shadow_roots(struct kvm_vcpu *vcpu)
* Do we shadow a long mode page table? If so we need to
* write-protect the guests page table root.
*/
if (vcpu->arch.mmu.root_level >= PT64_ROOT_4LEVEL) {
hpa_t root = vcpu->arch.mmu.root_hpa;
if (vcpu->arch.mmu->root_level >= PT64_ROOT_4LEVEL) {
hpa_t root = vcpu->arch.mmu->root_hpa;
MMU_WARN_ON(VALID_PAGE(root));
@ -3606,11 +3606,11 @@ static int mmu_alloc_shadow_roots(struct kvm_vcpu *vcpu)
return -ENOSPC;
}
sp = kvm_mmu_get_page(vcpu, root_gfn, 0,
vcpu->arch.mmu.shadow_root_level, 0, ACC_ALL);
vcpu->arch.mmu->shadow_root_level, 0, ACC_ALL);
root = __pa(sp->spt);
++sp->root_count;
spin_unlock(&vcpu->kvm->mmu_lock);
vcpu->arch.mmu.root_hpa = root;
vcpu->arch.mmu->root_hpa = root;
return 0;
}
@ -3620,17 +3620,17 @@ static int mmu_alloc_shadow_roots(struct kvm_vcpu *vcpu)
* the shadow page table may be a PAE or a long mode page table.
*/
pm_mask = PT_PRESENT_MASK;
if (vcpu->arch.mmu.shadow_root_level == PT64_ROOT_4LEVEL)
if (vcpu->arch.mmu->shadow_root_level == PT64_ROOT_4LEVEL)
pm_mask |= PT_ACCESSED_MASK | PT_WRITABLE_MASK | PT_USER_MASK;
for (i = 0; i < 4; ++i) {
hpa_t root = vcpu->arch.mmu.pae_root[i];
hpa_t root = vcpu->arch.mmu->pae_root[i];
MMU_WARN_ON(VALID_PAGE(root));
if (vcpu->arch.mmu.root_level == PT32E_ROOT_LEVEL) {
pdptr = vcpu->arch.mmu.get_pdptr(vcpu, i);
if (vcpu->arch.mmu->root_level == PT32E_ROOT_LEVEL) {
pdptr = vcpu->arch.mmu->get_pdptr(vcpu, i);
if (!(pdptr & PT_PRESENT_MASK)) {
vcpu->arch.mmu.pae_root[i] = 0;
vcpu->arch.mmu->pae_root[i] = 0;
continue;
}
root_gfn = pdptr >> PAGE_SHIFT;
@ -3648,16 +3648,16 @@ static int mmu_alloc_shadow_roots(struct kvm_vcpu *vcpu)
++sp->root_count;
spin_unlock(&vcpu->kvm->mmu_lock);
vcpu->arch.mmu.pae_root[i] = root | pm_mask;
vcpu->arch.mmu->pae_root[i] = root | pm_mask;
}
vcpu->arch.mmu.root_hpa = __pa(vcpu->arch.mmu.pae_root);
vcpu->arch.mmu->root_hpa = __pa(vcpu->arch.mmu->pae_root);
/*
* If we shadow a 32 bit page table with a long mode page
* table we enter this path.
*/
if (vcpu->arch.mmu.shadow_root_level == PT64_ROOT_4LEVEL) {
if (vcpu->arch.mmu.lm_root == NULL) {
if (vcpu->arch.mmu->shadow_root_level == PT64_ROOT_4LEVEL) {
if (vcpu->arch.mmu->lm_root == NULL) {
/*
* The additional page necessary for this is only
* allocated on demand.
@ -3669,12 +3669,12 @@ static int mmu_alloc_shadow_roots(struct kvm_vcpu *vcpu)
if (lm_root == NULL)
return 1;
lm_root[0] = __pa(vcpu->arch.mmu.pae_root) | pm_mask;
lm_root[0] = __pa(vcpu->arch.mmu->pae_root) | pm_mask;
vcpu->arch.mmu.lm_root = lm_root;
vcpu->arch.mmu->lm_root = lm_root;
}
vcpu->arch.mmu.root_hpa = __pa(vcpu->arch.mmu.lm_root);
vcpu->arch.mmu->root_hpa = __pa(vcpu->arch.mmu->lm_root);
}
return 0;
@ -3682,7 +3682,7 @@ static int mmu_alloc_shadow_roots(struct kvm_vcpu *vcpu)
static int mmu_alloc_roots(struct kvm_vcpu *vcpu)
{
if (vcpu->arch.mmu.direct_map)
if (vcpu->arch.mmu->direct_map)
return mmu_alloc_direct_roots(vcpu);
else
return mmu_alloc_shadow_roots(vcpu);
@ -3693,17 +3693,16 @@ void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu)
int i;
struct kvm_mmu_page *sp;
if (vcpu->arch.mmu.direct_map)
if (vcpu->arch.mmu->direct_map)
return;
if (!VALID_PAGE(vcpu->arch.mmu.root_hpa))
if (!VALID_PAGE(vcpu->arch.mmu->root_hpa))
return;
vcpu_clear_mmio_info(vcpu, MMIO_GVA_ANY);
if (vcpu->arch.mmu.root_level >= PT64_ROOT_4LEVEL) {
hpa_t root = vcpu->arch.mmu.root_hpa;
if (vcpu->arch.mmu->root_level >= PT64_ROOT_4LEVEL) {
hpa_t root = vcpu->arch.mmu->root_hpa;
sp = page_header(root);
/*
@ -3734,7 +3733,7 @@ void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu)
kvm_mmu_audit(vcpu, AUDIT_PRE_SYNC);
for (i = 0; i < 4; ++i) {
hpa_t root = vcpu->arch.mmu.pae_root[i];
hpa_t root = vcpu->arch.mmu->pae_root[i];
if (root && VALID_PAGE(root)) {
root &= PT64_BASE_ADDR_MASK;
@ -3808,7 +3807,7 @@ walk_shadow_page_get_mmio_spte(struct kvm_vcpu *vcpu, u64 addr, u64 *sptep)
int root, leaf;
bool reserved = false;
if (!VALID_PAGE(vcpu->arch.mmu.root_hpa))
if (!VALID_PAGE(vcpu->arch.mmu->root_hpa))
goto exit;
walk_shadow_page_lockless_begin(vcpu);
@ -3825,7 +3824,7 @@ walk_shadow_page_get_mmio_spte(struct kvm_vcpu *vcpu, u64 addr, u64 *sptep)
if (!is_shadow_present_pte(spte))
break;
reserved |= is_shadow_zero_bits_set(&vcpu->arch.mmu, spte,
reserved |= is_shadow_zero_bits_set(vcpu->arch.mmu, spte,
iterator.level);
}
@ -3904,7 +3903,7 @@ static void shadow_page_table_clear_flood(struct kvm_vcpu *vcpu, gva_t addr)
struct kvm_shadow_walk_iterator iterator;
u64 spte;
if (!VALID_PAGE(vcpu->arch.mmu.root_hpa))
if (!VALID_PAGE(vcpu->arch.mmu->root_hpa))
return;
walk_shadow_page_lockless_begin(vcpu);
@ -3931,7 +3930,7 @@ static int nonpaging_page_fault(struct kvm_vcpu *vcpu, gva_t gva,
if (r)
return r;
MMU_WARN_ON(!VALID_PAGE(vcpu->arch.mmu.root_hpa));
MMU_WARN_ON(!VALID_PAGE(vcpu->arch.mmu->root_hpa));
return nonpaging_map(vcpu, gva & PAGE_MASK,
@ -3944,8 +3943,8 @@ static int kvm_arch_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn)
arch.token = (vcpu->arch.apf.id++ << 12) | vcpu->vcpu_id;
arch.gfn = gfn;
arch.direct_map = vcpu->arch.mmu.direct_map;
arch.cr3 = vcpu->arch.mmu.get_cr3(vcpu);
arch.direct_map = vcpu->arch.mmu->direct_map;
arch.cr3 = vcpu->arch.mmu->get_cr3(vcpu);
return kvm_setup_async_pf(vcpu, gva, kvm_vcpu_gfn_to_hva(vcpu, gfn), &arch);
}
@ -4051,7 +4050,7 @@ static int tdp_page_fault(struct kvm_vcpu *vcpu, gva_t gpa, u32 error_code,
int write = error_code & PFERR_WRITE_MASK;
bool map_writable;
MMU_WARN_ON(!VALID_PAGE(vcpu->arch.mmu.root_hpa));
MMU_WARN_ON(!VALID_PAGE(vcpu->arch.mmu->root_hpa));
if (page_fault_handle_page_track(vcpu, error_code, gfn))
return RET_PF_EMULATE;
@ -4127,7 +4126,7 @@ static bool cached_root_available(struct kvm_vcpu *vcpu, gpa_t new_cr3,
{
uint i;
struct kvm_mmu_root_info root;
struct kvm_mmu *mmu = &vcpu->arch.mmu;
struct kvm_mmu *mmu = vcpu->arch.mmu;
root.cr3 = mmu->get_cr3(vcpu);
root.hpa = mmu->root_hpa;
@ -4150,7 +4149,7 @@ static bool fast_cr3_switch(struct kvm_vcpu *vcpu, gpa_t new_cr3,
union kvm_mmu_page_role new_role,
bool skip_tlb_flush)
{
struct kvm_mmu *mmu = &vcpu->arch.mmu;
struct kvm_mmu *mmu = vcpu->arch.mmu;
/*
* For now, limit the fast switch to 64-bit hosts+VMs in order to avoid
@ -4219,7 +4218,7 @@ static unsigned long get_cr3(struct kvm_vcpu *vcpu)
static void inject_page_fault(struct kvm_vcpu *vcpu,
struct x86_exception *fault)
{
vcpu->arch.mmu.inject_page_fault(vcpu, fault);
vcpu->arch.mmu->inject_page_fault(vcpu, fault);
}
static bool sync_mmio_spte(struct kvm_vcpu *vcpu, u64 *sptep, gfn_t gfn,
@ -4740,7 +4739,7 @@ kvm_calc_tdp_mmu_root_page_role(struct kvm_vcpu *vcpu)
static void init_kvm_tdp_mmu(struct kvm_vcpu *vcpu)
{
struct kvm_mmu *context = &vcpu->arch.mmu;
struct kvm_mmu *context = vcpu->arch.mmu;
context->base_role.word = mmu_base_role_mask.word &
kvm_calc_tdp_mmu_root_page_role(vcpu).word;
@ -4812,7 +4811,7 @@ kvm_calc_shadow_mmu_root_page_role(struct kvm_vcpu *vcpu)
void kvm_init_shadow_mmu(struct kvm_vcpu *vcpu)
{
struct kvm_mmu *context = &vcpu->arch.mmu;
struct kvm_mmu *context = vcpu->arch.mmu;
if (!is_paging(vcpu))
nonpaging_init_context(vcpu, context);
@ -4832,7 +4831,7 @@ EXPORT_SYMBOL_GPL(kvm_init_shadow_mmu);
static union kvm_mmu_page_role
kvm_calc_shadow_ept_root_page_role(struct kvm_vcpu *vcpu, bool accessed_dirty)
{
union kvm_mmu_page_role role = vcpu->arch.mmu.base_role;
union kvm_mmu_page_role role = vcpu->arch.mmu->base_role;
role.level = PT64_ROOT_4LEVEL;
role.direct = false;
@ -4846,7 +4845,7 @@ kvm_calc_shadow_ept_root_page_role(struct kvm_vcpu *vcpu, bool accessed_dirty)
void kvm_init_shadow_ept_mmu(struct kvm_vcpu *vcpu, bool execonly,
bool accessed_dirty, gpa_t new_eptp)
{
struct kvm_mmu *context = &vcpu->arch.mmu;
struct kvm_mmu *context = vcpu->arch.mmu;
union kvm_mmu_page_role root_page_role =
kvm_calc_shadow_ept_root_page_role(vcpu, accessed_dirty);
@ -4873,7 +4872,7 @@ EXPORT_SYMBOL_GPL(kvm_init_shadow_ept_mmu);
static void init_kvm_softmmu(struct kvm_vcpu *vcpu)
{
struct kvm_mmu *context = &vcpu->arch.mmu;
struct kvm_mmu *context = vcpu->arch.mmu;
kvm_init_shadow_mmu(vcpu);
context->set_cr3 = kvm_x86_ops->set_cr3;
@ -4891,7 +4890,7 @@ static void init_kvm_nested_mmu(struct kvm_vcpu *vcpu)
g_context->inject_page_fault = kvm_inject_page_fault;
/*
* Note that arch.mmu.gva_to_gpa translates l2_gpa to l1_gpa using
* Note that arch.mmu->gva_to_gpa translates l2_gpa to l1_gpa using
* L1's nested page tables (e.g. EPT12). The nested translation
* of l2_gva to l1_gpa is done by arch.nested_mmu.gva_to_gpa using
* L2's page tables as the first level of translation and L1's
@ -4930,10 +4929,10 @@ void kvm_init_mmu(struct kvm_vcpu *vcpu, bool reset_roots)
if (reset_roots) {
uint i;
vcpu->arch.mmu.root_hpa = INVALID_PAGE;
vcpu->arch.mmu->root_hpa = INVALID_PAGE;
for (i = 0; i < KVM_MMU_NUM_PREV_ROOTS; i++)
vcpu->arch.mmu.prev_roots[i] = KVM_MMU_ROOT_INFO_INVALID;
vcpu->arch.mmu->prev_roots[i] = KVM_MMU_ROOT_INFO_INVALID;
}
if (mmu_is_nested(vcpu))
@ -4982,7 +4981,7 @@ EXPORT_SYMBOL_GPL(kvm_mmu_load);
void kvm_mmu_unload(struct kvm_vcpu *vcpu)
{
kvm_mmu_free_roots(vcpu, KVM_MMU_ROOTS_ALL);
WARN_ON(VALID_PAGE(vcpu->arch.mmu.root_hpa));
WARN_ON(VALID_PAGE(vcpu->arch.mmu->root_hpa));
}
EXPORT_SYMBOL_GPL(kvm_mmu_unload);
@ -4996,7 +4995,7 @@ static void mmu_pte_write_new_pte(struct kvm_vcpu *vcpu,
}
++vcpu->kvm->stat.mmu_pte_updated;
vcpu->arch.mmu.update_pte(vcpu, sp, spte, new);
vcpu->arch.mmu->update_pte(vcpu, sp, spte, new);
}
static bool need_remote_flush(u64 old, u64 new)
@ -5176,7 +5175,7 @@ static void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
entry = *spte;
mmu_page_zap_pte(vcpu->kvm, sp, spte);
if (gentry &&
!((sp->role.word ^ vcpu->arch.mmu.base_role.word)
!((sp->role.word ^ vcpu->arch.mmu->base_role.word)
& mmu_base_role_mask.word) && rmap_can_add(vcpu))
mmu_pte_write_new_pte(vcpu, sp, spte, &gentry);
if (need_remote_flush(entry, *spte))
@ -5194,7 +5193,7 @@ int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva)
gpa_t gpa;
int r;
if (vcpu->arch.mmu.direct_map)
if (vcpu->arch.mmu->direct_map)
return 0;
gpa = kvm_mmu_gva_to_gpa_read(vcpu, gva, NULL);
@ -5230,10 +5229,10 @@ int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t cr2, u64 error_code,
{
int r, emulation_type = 0;
enum emulation_result er;
bool direct = vcpu->arch.mmu.direct_map;
bool direct = vcpu->arch.mmu->direct_map;
/* With shadow page tables, fault_address contains a GVA or nGPA. */
if (vcpu->arch.mmu.direct_map) {
if (vcpu->arch.mmu->direct_map) {
vcpu->arch.gpa_available = true;
vcpu->arch.gpa_val = cr2;
}
@ -5246,8 +5245,9 @@ int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t cr2, u64 error_code,
}
if (r == RET_PF_INVALID) {
r = vcpu->arch.mmu.page_fault(vcpu, cr2, lower_32_bits(error_code),
false);
r = vcpu->arch.mmu->page_fault(vcpu, cr2,
lower_32_bits(error_code),
false);
WARN_ON(r == RET_PF_INVALID);
}
@ -5263,7 +5263,7 @@ int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t cr2, u64 error_code,
* paging in both guests. If true, we simply unprotect the page
* and resume the guest.
*/
if (vcpu->arch.mmu.direct_map &&
if (vcpu->arch.mmu->direct_map &&
(error_code & PFERR_NESTED_GUEST_PAGE) == PFERR_NESTED_GUEST_PAGE) {
kvm_mmu_unprotect_page(vcpu->kvm, gpa_to_gfn(cr2));
return 1;
@ -5311,7 +5311,7 @@ EXPORT_SYMBOL_GPL(kvm_mmu_page_fault);
void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva)
{
struct kvm_mmu *mmu = &vcpu->arch.mmu;
struct kvm_mmu *mmu = vcpu->arch.mmu;
int i;
/* INVLPG on a * non-canonical address is a NOP according to the SDM. */
@ -5342,7 +5342,7 @@ EXPORT_SYMBOL_GPL(kvm_mmu_invlpg);
void kvm_mmu_invpcid_gva(struct kvm_vcpu *vcpu, gva_t gva, unsigned long pcid)
{
struct kvm_mmu *mmu = &vcpu->arch.mmu;
struct kvm_mmu *mmu = vcpu->arch.mmu;
bool tlb_flush = false;
uint i;
@ -5386,8 +5386,8 @@ EXPORT_SYMBOL_GPL(kvm_disable_tdp);
static void free_mmu_pages(struct kvm_vcpu *vcpu)
{
free_page((unsigned long)vcpu->arch.mmu.pae_root);
free_page((unsigned long)vcpu->arch.mmu.lm_root);
free_page((unsigned long)vcpu->arch.mmu->pae_root);
free_page((unsigned long)vcpu->arch.mmu->lm_root);
}
static int alloc_mmu_pages(struct kvm_vcpu *vcpu)
@ -5407,9 +5407,9 @@ static int alloc_mmu_pages(struct kvm_vcpu *vcpu)
if (!page)
return -ENOMEM;
vcpu->arch.mmu.pae_root = page_address(page);
vcpu->arch.mmu->pae_root = page_address(page);
for (i = 0; i < 4; ++i)
vcpu->arch.mmu.pae_root[i] = INVALID_PAGE;
vcpu->arch.mmu->pae_root[i] = INVALID_PAGE;
return 0;
}
@ -5418,20 +5418,21 @@ int kvm_mmu_create(struct kvm_vcpu *vcpu)
{
uint i;
vcpu->arch.walk_mmu = &vcpu->arch.mmu;
vcpu->arch.mmu.root_hpa = INVALID_PAGE;
vcpu->arch.mmu.translate_gpa = translate_gpa;
vcpu->arch.mmu = &vcpu->arch.root_mmu;
vcpu->arch.walk_mmu = &vcpu->arch.root_mmu;
vcpu->arch.root_mmu.root_hpa = INVALID_PAGE;
vcpu->arch.root_mmu.translate_gpa = translate_gpa;
vcpu->arch.nested_mmu.translate_gpa = translate_nested_gpa;
for (i = 0; i < KVM_MMU_NUM_PREV_ROOTS; i++)
vcpu->arch.mmu.prev_roots[i] = KVM_MMU_ROOT_INFO_INVALID;
vcpu->arch.root_mmu.prev_roots[i] = KVM_MMU_ROOT_INFO_INVALID;
return alloc_mmu_pages(vcpu);
}
void kvm_mmu_setup(struct kvm_vcpu *vcpu)
{
MMU_WARN_ON(VALID_PAGE(vcpu->arch.mmu.root_hpa));
MMU_WARN_ON(VALID_PAGE(vcpu->arch.mmu->root_hpa));
/*
* kvm_mmu_setup() is called only on vCPU initialization.

8
arch/x86/kvm/mmu.h
View File

@ -75,7 +75,7 @@ static inline unsigned int kvm_mmu_available_pages(struct kvm *kvm)
static inline int kvm_mmu_reload(struct kvm_vcpu *vcpu)
{
if (likely(vcpu->arch.mmu.root_hpa != INVALID_PAGE))
if (likely(vcpu->arch.mmu->root_hpa != INVALID_PAGE))
return 0;
return kvm_mmu_load(vcpu);
@ -97,9 +97,9 @@ static inline unsigned long kvm_get_active_pcid(struct kvm_vcpu *vcpu)
static inline void kvm_mmu_load_cr3(struct kvm_vcpu *vcpu)
{
if (VALID_PAGE(vcpu->arch.mmu.root_hpa))
vcpu->arch.mmu.set_cr3(vcpu, vcpu->arch.mmu.root_hpa |
kvm_get_active_pcid(vcpu));
if (VALID_PAGE(vcpu->arch.mmu->root_hpa))
vcpu->arch.mmu->set_cr3(vcpu, vcpu->arch.mmu->root_hpa |
kvm_get_active_pcid(vcpu));
}
/*

12
arch/x86/kvm/mmu_audit.c
View File

@ -59,19 +59,19 @@ static void mmu_spte_walk(struct kvm_vcpu *vcpu, inspect_spte_fn fn)
int i;
struct kvm_mmu_page *sp;
if (!VALID_PAGE(vcpu->arch.mmu.root_hpa))
if (!VALID_PAGE(vcpu->arch.mmu->root_hpa))
return;
if (vcpu->arch.mmu.root_level >= PT64_ROOT_4LEVEL) {
hpa_t root = vcpu->arch.mmu.root_hpa;
if (vcpu->arch.mmu->root_level >= PT64_ROOT_4LEVEL) {
hpa_t root = vcpu->arch.mmu->root_hpa;
sp = page_header(root);
__mmu_spte_walk(vcpu, sp, fn, vcpu->arch.mmu.root_level);
__mmu_spte_walk(vcpu, sp, fn, vcpu->arch.mmu->root_level);
return;
}
for (i = 0; i < 4; ++i) {
hpa_t root = vcpu->arch.mmu.pae_root[i];
hpa_t root = vcpu->arch.mmu->pae_root[i];
if (root && VALID_PAGE(root)) {
root &= PT64_BASE_ADDR_MASK;
@ -122,7 +122,7 @@ static void audit_mappings(struct kvm_vcpu *vcpu, u64 *sptep, int level)
hpa = pfn << PAGE_SHIFT;
if ((*sptep & PT64_BASE_ADDR_MASK) != hpa)
audit_printk(vcpu->kvm, "levels %d pfn %llx hpa %llx "
"ent %llxn", vcpu->arch.mmu.root_level, pfn,
"ent %llxn", vcpu->arch.mmu->root_level, pfn,
hpa, *sptep);
}

15
arch/x86/kvm/paging_tmpl.h
View File

@ -158,14 +158,15 @@ static bool FNAME(prefetch_invalid_gpte)(struct kvm_vcpu *vcpu,
struct kvm_mmu_page *sp, u64 *spte,
u64 gpte)
{
if (is_rsvd_bits_set(&vcpu->arch.mmu, gpte, PT_PAGE_TABLE_LEVEL))
if (is_rsvd_bits_set(vcpu->arch.mmu, gpte, PT_PAGE_TABLE_LEVEL))
goto no_present;
if (!FNAME(is_present_gpte)(gpte))
goto no_present;
/* if accessed bit is not supported prefetch non accessed gpte */
if (PT_HAVE_ACCESSED_DIRTY(&vcpu->arch.mmu) && !(gpte & PT_GUEST_ACCESSED_MASK))
if (PT_HAVE_ACCESSED_DIRTY(vcpu->arch.mmu) &&
!(gpte & PT_GUEST_ACCESSED_MASK))
goto no_present;
return false;
@ -480,7 +481,7 @@ error:
static int FNAME(walk_addr)(struct guest_walker *walker,
struct kvm_vcpu *vcpu, gva_t addr, u32 access)
{
return FNAME(walk_addr_generic)(walker, vcpu, &vcpu->arch.mmu, addr,
return FNAME(walk_addr_generic)(walker, vcpu, vcpu->arch.mmu, addr,
access);
}
@ -509,7 +510,7 @@ FNAME(prefetch_gpte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
gfn = gpte_to_gfn(gpte);
pte_access = sp->role.access & FNAME(gpte_access)(gpte);
FNAME(protect_clean_gpte)(&vcpu->arch.mmu, &pte_access, gpte);
FNAME(protect_clean_gpte)(vcpu->arch.mmu, &pte_access, gpte);
pfn = pte_prefetch_gfn_to_pfn(vcpu, gfn,
no_dirty_log && (pte_access & ACC_WRITE_MASK));
if (is_error_pfn(pfn))
@ -604,7 +605,7 @@ static int FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr,
direct_access = gw->pte_access;
top_level = vcpu->arch.mmu.root_level;
top_level = vcpu->arch.mmu->root_level;
if (top_level == PT32E_ROOT_LEVEL)
top_level = PT32_ROOT_LEVEL;
/*
@ -616,7 +617,7 @@ static int FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr,
if (FNAME(gpte_changed)(vcpu, gw, top_level))
goto out_gpte_changed;
if (!VALID_PAGE(vcpu->arch.mmu.root_hpa))
if (!VALID_PAGE(vcpu->arch.mmu->root_hpa))
goto out_gpte_changed;
for (shadow_walk_init(&it, vcpu, addr);
@ -1004,7 +1005,7 @@ static int FNAME(sync_page)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp)
gfn = gpte_to_gfn(gpte);
pte_access = sp->role.access;
pte_access &= FNAME(gpte_access)(gpte);
FNAME(protect_clean_gpte)(&vcpu->arch.mmu, &pte_access, gpte);
FNAME(protect_clean_gpte)(vcpu->arch.mmu, &pte_access, gpte);
if (sync_mmio_spte(vcpu, &sp->spt[i], gfn, pte_access,
&nr_present))

14
arch/x86/kvm/svm.c
View File

@ -2918,18 +2918,18 @@ static void nested_svm_init_mmu_context(struct kvm_vcpu *vcpu)
{
WARN_ON(mmu_is_nested(vcpu));
kvm_init_shadow_mmu(vcpu);
vcpu->arch.mmu.set_cr3 = nested_svm_set_tdp_cr3;
vcpu->arch.mmu.get_cr3 = nested_svm_get_tdp_cr3;
vcpu->arch.mmu.get_pdptr = nested_svm_get_tdp_pdptr;
vcpu->arch.mmu.inject_page_fault = nested_svm_inject_npf_exit;
vcpu->arch.mmu.shadow_root_level = get_npt_level(vcpu);
reset_shadow_zero_bits_mask(vcpu, &vcpu->arch.mmu);
vcpu->arch.mmu->set_cr3 = nested_svm_set_tdp_cr3;
vcpu->arch.mmu->get_cr3 = nested_svm_get_tdp_cr3;
vcpu->arch.mmu->get_pdptr = nested_svm_get_tdp_pdptr;
vcpu->arch.mmu->inject_page_fault = nested_svm_inject_npf_exit;
vcpu->arch.mmu->shadow_root_level = get_npt_level(vcpu);
reset_shadow_zero_bits_mask(vcpu, vcpu->arch.mmu);
vcpu->arch.walk_mmu = &vcpu->arch.nested_mmu;
}
static void nested_svm_uninit_mmu_context(struct kvm_vcpu *vcpu)
{
vcpu->arch.walk_mmu = &vcpu->arch.mmu;
vcpu->arch.walk_mmu = &vcpu->arch.root_mmu;
}
static int nested_svm_check_permissions(struct vcpu_svm *svm)

15
arch/x86/kvm/vmx.c
View File

@ -5111,9 +5111,10 @@ static inline void __vmx_flush_tlb(struct kvm_vcpu *vcpu, int vpid,
bool invalidate_gpa)
{
if (enable_ept && (invalidate_gpa || !enable_vpid)) {
if (!VALID_PAGE(vcpu->arch.mmu.root_hpa))
if (!VALID_PAGE(vcpu->arch.mmu->root_hpa))
return;
ept_sync_context(construct_eptp(vcpu, vcpu->arch.mmu.root_hpa));
ept_sync_context(construct_eptp(vcpu,
vcpu->arch.mmu->root_hpa));
} else {
vpid_sync_context(vpid);
}
@ -9122,7 +9123,7 @@ static int handle_invpcid(struct kvm_vcpu *vcpu)
}
for (i = 0; i < KVM_MMU_NUM_PREV_ROOTS; i++)
if (kvm_get_pcid(vcpu, vcpu->arch.mmu.prev_roots[i].cr3)
if (kvm_get_pcid(vcpu, vcpu->arch.mmu->prev_roots[i].cr3)
== operand.pcid)
roots_to_free |= KVM_MMU_ROOT_PREVIOUS(i);
@ -11304,16 +11305,16 @@ static void nested_ept_init_mmu_context(struct kvm_vcpu *vcpu)
VMX_EPT_EXECUTE_ONLY_BIT,
nested_ept_ad_enabled(vcpu),
nested_ept_get_cr3(vcpu));
vcpu->arch.mmu.set_cr3 = vmx_set_cr3;
vcpu->arch.mmu.get_cr3 = nested_ept_get_cr3;
vcpu->arch.mmu.inject_page_fault = nested_ept_inject_page_fault;
vcpu->arch.mmu->set_cr3 = vmx_set_cr3;
vcpu->arch.mmu->get_cr3 = nested_ept_get_cr3;
vcpu->arch.mmu->inject_page_fault = nested_ept_inject_page_fault;
vcpu->arch.walk_mmu = &vcpu->arch.nested_mmu;
}
static void nested_ept_uninit_mmu_context(struct kvm_vcpu *vcpu)
{
vcpu->arch.walk_mmu = &vcpu->arch.mmu;
vcpu->arch.walk_mmu = &vcpu->arch.root_mmu;
}
static bool nested_vmx_is_page_fault_vmexit(struct vmcs12 *vmcs12,

20
arch/x86/kvm/x86.c
View File

@ -503,7 +503,7 @@ static bool kvm_propagate_fault(struct kvm_vcpu *vcpu, struct x86_exception *fau
if (mmu_is_nested(vcpu) && !fault->nested_page_fault)
vcpu->arch.nested_mmu.inject_page_fault(vcpu, fault);
else
vcpu->arch.mmu.inject_page_fault(vcpu, fault);
vcpu->arch.mmu->inject_page_fault(vcpu, fault);
return fault->nested_page_fault;
}
@ -602,7 +602,7 @@ int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3)
for (i = 0; i < ARRAY_SIZE(pdpte); ++i) {
if ((pdpte[i] & PT_PRESENT_MASK) &&
(pdpte[i] &
vcpu->arch.mmu.guest_rsvd_check.rsvd_bits_mask[0][2])) {
vcpu->arch.mmu->guest_rsvd_check.rsvd_bits_mask[0][2])) {
ret = 0;
goto out;
}
@ -4809,7 +4809,7 @@ gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access,
/* NPT walks are always user-walks */
access |= PFERR_USER_MASK;
t_gpa = vcpu->arch.mmu.gva_to_gpa(vcpu, gpa, access, exception);
t_gpa = vcpu->arch.mmu->gva_to_gpa(vcpu, gpa, access, exception);
return t_gpa;
}
@ -5895,7 +5895,7 @@ static bool reexecute_instruction(struct kvm_vcpu *vcpu, gva_t cr2,
if (WARN_ON_ONCE(is_guest_mode(vcpu)))
return false;
if (!vcpu->arch.mmu.direct_map) {
if (!vcpu->arch.mmu->direct_map) {
/*
* Write permission should be allowed since only
* write access need to be emulated.
@ -5928,7 +5928,7 @@ static bool reexecute_instruction(struct kvm_vcpu *vcpu, gva_t cr2,
kvm_release_pfn_clean(pfn);
/* The instructions are well-emulated on direct mmu. */
if (vcpu->arch.mmu.direct_map) {
if (vcpu->arch.mmu->direct_map) {
unsigned int indirect_shadow_pages;
spin_lock(&vcpu->kvm->mmu_lock);
@ -5995,7 +5995,7 @@ static bool retry_instruction(struct x86_emulate_ctxt *ctxt,
vcpu->arch.last_retry_eip = ctxt->eip;
vcpu->arch.last_retry_addr = cr2;
if (!vcpu->arch.mmu.direct_map)
if (!vcpu->arch.mmu->direct_map)
gpa = kvm_mmu_gva_to_gpa_write(vcpu, cr2, NULL);
kvm_mmu_unprotect_page(vcpu->kvm, gpa_to_gfn(gpa));
@ -9333,7 +9333,7 @@ void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu, struct kvm_async_pf *work)
{
int r;
if ((vcpu->arch.mmu.direct_map != work->arch.direct_map) ||
if ((vcpu->arch.mmu->direct_map != work->arch.direct_map) ||
work->wakeup_all)
return;
@ -9341,11 +9341,11 @@ void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu, struct kvm_async_pf *work)
if (unlikely(r))
return;
if (!vcpu->arch.mmu.direct_map &&
work->arch.cr3 != vcpu->arch.mmu.get_cr3(vcpu))
if (!vcpu->arch.mmu->direct_map &&
work->arch.cr3 != vcpu->arch.mmu->get_cr3(vcpu))
return;
vcpu->arch.mmu.page_fault(vcpu, work->gva, 0, true);
vcpu->arch.mmu->page_fault(vcpu, work->gva, 0, true);
}
static inline u32 kvm_async_pf_hash_fn(gfn_t gfn)