#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/spinlock.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
#include <linux/mm.h>
#include <asm/signal.h>
#define INVALID_PAGE (~(hpa_t)0)
#define UNMAPPED_GVA (~(gpa_t)0)
-#define KVM_MAX_VCPUS 1
+#define KVM_MAX_VCPUS 4
#define KVM_ALIAS_SLOTS 4
#define KVM_MEMORY_SLOTS 4
#define KVM_NUM_MMU_PAGES 1024
#define KVM_PIO_PAGE_OFFSET 1
+/*
+ * vcpu->requests bit members
+ */
+#define KVM_TLB_FLUSH 0
+
/*
* Address types:
*
* bits 4:7 - page table level for this shadow (1-4)
* bits 8:9 - page table quadrant for 2-level guests
* bit 16 - "metaphysical" - gfn is not a real page (huge page/real mode)
- * bits 17:18 - "access" - the user and writable bits of a huge page pde
+ * bits 17:19 - "access" - the user, writable, and nx bits of a huge page pde
*/
union kvm_mmu_page_role {
unsigned word;
unsigned quadrant : 2;
unsigned pad_for_nice_hex_output : 6;
unsigned metaphysical : 1;
- unsigned hugepage_access : 2;
+ unsigned hugepage_access : 3;
};
};
struct page *guest_pages[2];
unsigned guest_page_offset;
int in;
+ int port;
int size;
int string;
int down;
u32 efer_reload;
};
+struct kvm_io_device {
+ void (*read)(struct kvm_io_device *this,
+ gpa_t addr,
+ int len,
+ void *val);
+ void (*write)(struct kvm_io_device *this,
+ gpa_t addr,
+ int len,
+ const void *val);
+ int (*in_range)(struct kvm_io_device *this, gpa_t addr);
+ void (*destructor)(struct kvm_io_device *this);
+
+ void *private;
+};
+
+static inline void kvm_iodevice_read(struct kvm_io_device *dev,
+ gpa_t addr,
+ int len,
+ void *val)
+{
+ dev->read(dev, addr, len, val);
+}
+
+static inline void kvm_iodevice_write(struct kvm_io_device *dev,
+ gpa_t addr,
+ int len,
+ const void *val)
+{
+ dev->write(dev, addr, len, val);
+}
+
+static inline int kvm_iodevice_inrange(struct kvm_io_device *dev, gpa_t addr)
+{
+ return dev->in_range(dev, addr);
+}
+
+static inline void kvm_iodevice_destructor(struct kvm_io_device *dev)
+{
+ if (dev->destructor)
+ dev->destructor(dev);
+}
+
+/*
+ * It would be nice to use something smarter than a linear search, TBD...
+ * Thankfully we dont expect many devices to register (famous last words :),
+ * so until then it will suffice. At least its abstracted so we can change
+ * in one place.
+ */
+struct kvm_io_bus {
+ int dev_count;
+#define NR_IOBUS_DEVS 6
+ struct kvm_io_device *devs[NR_IOBUS_DEVS];
+};
+
+void kvm_io_bus_init(struct kvm_io_bus *bus);
+void kvm_io_bus_destroy(struct kvm_io_bus *bus);
+struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus, gpa_t addr);
+void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
+ struct kvm_io_device *dev);
+
struct kvm_vcpu {
struct kvm *kvm;
union {
u64 host_tsc;
struct kvm_run *run;
int interrupt_window_open;
+ int guest_mode;
+ unsigned long requests;
unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */
#define NR_IRQ_WORDS KVM_IRQ_BITMAP_SIZE(unsigned long)
unsigned long irq_pending[NR_IRQ_WORDS];
struct vmx_msr_entry *guest_msrs;
struct vmx_msr_entry *host_msrs;
- struct list_head free_pages;
- struct kvm_mmu_page page_header_buf[KVM_NUM_MMU_PAGES];
struct kvm_mmu mmu;
struct kvm_mmu_memory_cache mmu_pte_chain_cache;
struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
+ struct kvm_mmu_memory_cache mmu_page_cache;
+ struct kvm_mmu_memory_cache mmu_page_header_cache;
gfn_t last_pt_write_gfn;
int last_pt_write_count;
u32 ar;
} tr, es, ds, fs, gs;
} rmode;
+ int halt_request; /* real mode on Intel only */
int cpuid_nent;
struct kvm_cpuid_entry cpuid_entries[KVM_MAX_CPUID_ENTRIES];
struct list_head active_mmu_pages;
int n_free_mmu_pages;
struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
+ int nvcpus;
struct kvm_vcpu vcpus[KVM_MAX_VCPUS];
int memory_config_version;
int busy;
unsigned long rmap_overflow;
struct list_head vm_list;
struct file *filp;
+ struct kvm_io_bus mmio_bus;
+ struct kvm_io_bus pio_bus;
};
struct descriptor_table {
int kvm_mmu_setup(struct kvm_vcpu *vcpu);
int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
-void kvm_mmu_slot_remove_write_access(struct kvm_vcpu *vcpu, int slot);
-void kvm_mmu_zap_all(struct kvm_vcpu *vcpu);
+void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
+void kvm_mmu_zap_all(struct kvm *kvm);
hpa_t gpa_to_hpa(struct kvm_vcpu *vcpu, gpa_t gpa);
#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr);
void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value,
unsigned long *rflags);
+int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
+int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
struct x86_emulate_ctxt;
int size, unsigned long count, int string, int down,
gva_t address, int rep, unsigned port);
void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
+int kvm_emulate_halt(struct kvm_vcpu *vcpu);
int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
int emulate_clts(struct kvm_vcpu *vcpu);
int emulator_get_dr(struct x86_emulate_ctxt* ctxt, int dr,
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);
+void kvm_flush_remote_tlbs(struct kvm *kvm);
int kvm_read_guest(struct kvm_vcpu *vcpu,
gva_t addr,
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);
+void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
+int kvm_mmu_load(struct kvm_vcpu *vcpu);
+void kvm_mmu_unload(struct kvm_vcpu *vcpu);
int kvm_hypercall(struct kvm_vcpu *vcpu, struct kvm_run *run);
static inline int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva,
u32 error_code)
{
- if (unlikely(vcpu->kvm->n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES))
- kvm_mmu_free_some_pages(vcpu);
return vcpu->mmu.page_fault(vcpu, gva, error_code);
}
+static inline void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu)
+{
+ if (unlikely(vcpu->kvm->n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES))
+ __kvm_mmu_free_some_pages(vcpu);
+}
+
+static inline int kvm_mmu_reload(struct kvm_vcpu *vcpu)
+{
+ if (likely(vcpu->mmu.root_hpa != INVALID_PAGE))
+ return 0;
+
+ return kvm_mmu_load(vcpu);
+}
+
static inline int is_long_mode(struct kvm_vcpu *vcpu)
{
#ifdef CONFIG_X86_64