KVM: Fix potential guest state leak into host

[powerpc.git] / drivers / kvm / kvm.h

diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h
index d19985a..bb32383 100644 (file)
--- a/drivers/kvm/kvm.h
+++ b/drivers/kvm/kvm.h
@@ -11,6 +11,7 @@
 #include <linux/mutex.h>
 #include <linux/spinlock.h>
 #include <linux/mm.h>
+#include <asm/signal.h>
 
 #include "vmx.h"
 #include <linux/kvm.h>
@@ -51,8 +52,9 @@
 #define UNMAPPED_GVA (~(gpa_t)0)
 
 #define KVM_MAX_VCPUS 1
+#define KVM_ALIAS_SLOTS 4
 #define KVM_MEMORY_SLOTS 4
-#define KVM_NUM_MMU_PAGES 256
+#define KVM_NUM_MMU_PAGES 1024
 #define KVM_MIN_FREE_MMU_PAGES 5
 #define KVM_REFILL_PAGES 25
 #define KVM_MAX_CPUID_ENTRIES 40
@@ -62,6 +64,7 @@
 #define FX_BUF_SIZE (2 * FX_IMAGE_SIZE + FX_IMAGE_ALIGN)
 
 #define DE_VECTOR 0
+#define NM_VECTOR 7
 #define DF_VECTOR 8
 #define TS_VECTOR 10
 #define NP_VECTOR 11
@@ -235,6 +238,23 @@ struct kvm_pio_request {
        int rep;
 };
 
+struct kvm_stat {
+       u32 pf_fixed;
+       u32 pf_guest;
+       u32 tlb_flush;
+       u32 invlpg;
+
+       u32 exits;
+       u32 io_exits;
+       u32 mmio_exits;
+       u32 signal_exits;
+       u32 irq_window_exits;
+       u32 halt_exits;
+       u32 request_irq_exits;
+       u32 irq_exits;
+       u32 light_exits;
+};
+
 struct kvm_vcpu {
        struct kvm *kvm;
        union {
@@ -284,6 +304,13 @@ struct kvm_vcpu {
        char fx_buf[FX_BUF_SIZE];
        char *host_fx_image;
        char *guest_fx_image;
+       int fpu_active;
+       int guest_fpu_loaded;
+       struct vmx_host_state {
+               int loaded;
+               u16 fs_sel, gs_sel, ldt_sel;
+               int fs_gs_ldt_reload_needed;
+       } vmx_host_state;
 
        int mmio_needed;
        int mmio_read_completed;
@@ -291,12 +318,15 @@ struct kvm_vcpu {
        int mmio_size;
        unsigned char mmio_data[8];
        gpa_t mmio_phys_addr;
+       gva_t mmio_fault_cr2;
        struct kvm_pio_request pio;
        void *pio_data;
 
        int sigset_active;
        sigset_t sigset;
 
+       struct kvm_stat stat;
+
        struct {
                int active;
                u8 save_iopl;
@@ -312,6 +342,12 @@ struct kvm_vcpu {
        struct kvm_cpuid_entry cpuid_entries[KVM_MAX_CPUID_ENTRIES];
 };
 
+struct kvm_mem_alias {
+       gfn_t base_gfn;
+       unsigned long npages;
+       gfn_t target_gfn;
+};
+
 struct kvm_memory_slot {
        gfn_t base_gfn;
        unsigned long npages;
@@ -322,6 +358,8 @@ struct kvm_memory_slot {
 
 struct kvm {
        spinlock_t lock; /* protects everything except vcpus */
+       int naliases;
+       struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS];
        int nmemslots;
        struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS];
        /*
@@ -338,22 +376,6 @@ struct kvm {
        struct file *filp;
 };
 
-struct kvm_stat {
-       u32 pf_fixed;
-       u32 pf_guest;
-       u32 tlb_flush;
-       u32 invlpg;
-
-       u32 exits;
-       u32 io_exits;
-       u32 mmio_exits;
-       u32 signal_exits;
-       u32 irq_window_exits;
-       u32 halt_exits;
-       u32 request_irq_exits;
-       u32 irq_exits;
-};
-
 struct descriptor_table {
        u16 limit;
        unsigned long base;
@@ -384,7 +406,7 @@ struct kvm_arch_ops {
        void (*set_segment)(struct kvm_vcpu *vcpu,
                            struct kvm_segment *var, int seg);
        void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
-       void (*decache_cr0_cr4_guest_bits)(struct kvm_vcpu *vcpu);
+       void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
        void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
        void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
        void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
@@ -415,7 +437,6 @@ struct kvm_arch_ops {
                                unsigned char *hypercall_addr);
 };
 
-extern struct kvm_stat kvm_stat;
 extern struct kvm_arch_ops *kvm_arch_ops;
 
 #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
@@ -424,6 +445,9 @@ extern struct kvm_arch_ops *kvm_arch_ops;
 int kvm_init_arch(struct kvm_arch_ops *ops, struct module *module);
 void kvm_exit_arch(void);
 
+int kvm_mmu_module_init(void);
+void kvm_mmu_module_exit(void);
+
 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
 int kvm_mmu_create(struct kvm_vcpu *vcpu);
 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
@@ -491,6 +515,8 @@ void fx_init(struct kvm_vcpu *vcpu);
 void load_msrs(struct vmx_msr_entry *e, int n);
 void save_msrs(struct vmx_msr_entry *e, int n);
 void kvm_resched(struct kvm_vcpu *vcpu);
+void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
+void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
 
 int kvm_read_guest(struct kvm_vcpu *vcpu,
               gva_t addr,
@@ -504,8 +530,8 @@ int kvm_write_guest(struct kvm_vcpu *vcpu,
 
 unsigned long segment_base(u16 selector);
 
-void kvm_mmu_pre_write(struct kvm_vcpu *vcpu, gpa_t gpa, int bytes);
-void kvm_mmu_post_write(struct kvm_vcpu *vcpu, gpa_t gpa, int bytes);
+void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
+                      const u8 *old, const u8 *new, int bytes);
 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
 void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);