KVM: VMX: add struct kvm_vmx to hold VMX specific KVM vars

Add struct kvm_vmx, which wraps struct kvm, and a helper to_kvm_vmx()
that retrieves 'struct kvm_vmx *' from 'struct kvm *'.  Move the VMX
specific variables out of kvm_arch and into kvm_vmx.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 5f17a23..1e1a49c 100644 (file)
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -808,7 +808,6 @@ struct kvm_arch {
        struct mutex apic_map_lock;
        struct kvm_apic_map *apic_map;
 
-       unsigned int tss_addr;
        bool apic_access_page_done;
 
        gpa_t wall_clock;
@@ -817,9 +816,6 @@ struct kvm_arch {
        bool hlt_in_guest;
        bool pause_in_guest;
 
-       bool ept_identity_pagetable_done;
-       gpa_t ept_identity_map_addr;
-
        unsigned long irq_sources_bitmap;
        s64 kvmclock_offset;
        raw_spinlock_t tsc_write_lock;

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 7b842fe..9bc05f5 100644 (file)
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -196,6 +196,14 @@ module_param(ple_window_max, int, S_IRUGO);
 
 extern const ulong vmx_return;
 
+struct kvm_vmx {
+       struct kvm kvm;
+
+       unsigned int tss_addr;
+       bool ept_identity_pagetable_done;
+       gpa_t ept_identity_map_addr;
+};
+
 #define NR_AUTOLOAD_MSRS 8
 
 struct vmcs {
@@ -698,6 +706,11 @@ enum segment_cache_field {
        SEG_FIELD_NR = 4
 };
 
+static inline struct kvm_vmx *to_kvm_vmx(struct kvm *kvm)
+{
+       return container_of(kvm, struct kvm_vmx, kvm);
+}
+
 static inline struct vcpu_vmx *to_vmx(struct kvm_vcpu *vcpu)
 {
        return container_of(vcpu, struct vcpu_vmx, vcpu);
@@ -4219,6 +4232,7 @@ static void enter_rmode(struct kvm_vcpu *vcpu)
 {
        unsigned long flags;
        struct vcpu_vmx *vmx = to_vmx(vcpu);
+       struct kvm_vmx *kvm_vmx = to_kvm_vmx(vcpu->kvm);
 
        vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_TR], VCPU_SREG_TR);
        vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_ES], VCPU_SREG_ES);
@@ -4234,13 +4248,13 @@ static void enter_rmode(struct kvm_vcpu *vcpu)
         * Very old userspace does not call KVM_SET_TSS_ADDR before entering
         * vcpu. Warn the user that an update is overdue.
         */
-       if (!vcpu->kvm->arch.tss_addr)
+       if (!kvm_vmx->tss_addr)
                printk_once(KERN_WARNING "kvm: KVM_SET_TSS_ADDR need to be "
                             "called before entering vcpu\n");
 
        vmx_segment_cache_clear(vmx);
 
-       vmcs_writel(GUEST_TR_BASE, vcpu->kvm->arch.tss_addr);
+       vmcs_writel(GUEST_TR_BASE, kvm_vmx->tss_addr);
        vmcs_write32(GUEST_TR_LIMIT, RMODE_TSS_SIZE - 1);
        vmcs_write32(GUEST_TR_AR_BYTES, 0x008b);
 
@@ -4530,7 +4544,7 @@ static void vmx_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3)
                    is_guest_mode(vcpu))
                        guest_cr3 = kvm_read_cr3(vcpu);
                else
-                       guest_cr3 = vcpu->kvm->arch.ept_identity_map_addr;
+                       guest_cr3 = to_kvm_vmx(vcpu->kvm)->ept_identity_map_addr;
                ept_load_pdptrs(vcpu);
        }
 
@@ -4971,7 +4985,7 @@ static int init_rmode_tss(struct kvm *kvm)
        int idx, r;
 
        idx = srcu_read_lock(&kvm->srcu);
-       fn = kvm->arch.tss_addr >> PAGE_SHIFT;
+       fn = to_kvm_vmx(kvm)->tss_addr >> PAGE_SHIFT;
        r = kvm_clear_guest_page(kvm, fn, 0, PAGE_SIZE);
        if (r < 0)
                goto out;
@@ -4997,22 +5011,23 @@ out:
 
 static int init_rmode_identity_map(struct kvm *kvm)
 {
+       struct kvm_vmx *kvm_vmx = to_kvm_vmx(kvm);
        int i, idx, r = 0;
        kvm_pfn_t identity_map_pfn;
        u32 tmp;
 
-       /* Protect kvm->arch.ept_identity_pagetable_done. */
+       /* Protect kvm_vmx->ept_identity_pagetable_done. */
        mutex_lock(&kvm->slots_lock);
 
-       if (likely(kvm->arch.ept_identity_pagetable_done))
+       if (likely(kvm_vmx->ept_identity_pagetable_done))
                goto out2;
 
-       if (!kvm->arch.ept_identity_map_addr)
-               kvm->arch.ept_identity_map_addr = VMX_EPT_IDENTITY_PAGETABLE_ADDR;
-       identity_map_pfn = kvm->arch.ept_identity_map_addr >> PAGE_SHIFT;
+       if (!kvm_vmx->ept_identity_map_addr)
+               kvm_vmx->ept_identity_map_addr = VMX_EPT_IDENTITY_PAGETABLE_ADDR;
+       identity_map_pfn = kvm_vmx->ept_identity_map_addr >> PAGE_SHIFT;
 
        r = __x86_set_memory_region(kvm, IDENTITY_PAGETABLE_PRIVATE_MEMSLOT,
-                                   kvm->arch.ept_identity_map_addr, PAGE_SIZE);
+                                   kvm_vmx->ept_identity_map_addr, PAGE_SIZE);
        if (r < 0)
                goto out2;
 
@@ -5029,7 +5044,7 @@ static int init_rmode_identity_map(struct kvm *kvm)
                if (r < 0)
                        goto out;
        }
-       kvm->arch.ept_identity_pagetable_done = true;
+       kvm_vmx->ept_identity_pagetable_done = true;
 
 out:
        srcu_read_unlock(&kvm->srcu, idx);
@@ -6106,13 +6121,13 @@ static int vmx_set_tss_addr(struct kvm *kvm, unsigned int addr)
                                    PAGE_SIZE * 3);
        if (ret)
                return ret;
-       kvm->arch.tss_addr = addr;
+       to_kvm_vmx(kvm)->tss_addr = addr;
        return init_rmode_tss(kvm);
 }
 
 static int vmx_set_identity_map_addr(struct kvm *kvm, u64 ident_addr)
 {
-       kvm->arch.ept_identity_map_addr = ident_addr;
+       to_kvm_vmx(kvm)->ept_identity_map_addr = ident_addr;
        return 0;
 }
 
@@ -9771,12 +9786,13 @@ STACK_FRAME_NON_STANDARD(vmx_vcpu_run);
 
 static struct kvm *vmx_vm_alloc(void)
 {
-       return kzalloc(sizeof(struct kvm), GFP_KERNEL);
+       struct kvm_vmx *kvm_vmx = kzalloc(sizeof(struct kvm_vmx), GFP_KERNEL);
+       return &kvm_vmx->kvm;
 }
 
 static void vmx_vm_free(struct kvm *kvm)
 {
-       kfree(kvm);
+       kfree(to_kvm_vmx(kvm));
 }
 
 static void vmx_switch_vmcs(struct kvm_vcpu *vcpu, struct loaded_vmcs *vmcs)