from Christian Ehrhardt
This contains the deletions of x86 arch specific code done in kvm_main.
Signed-off-by: Christian Ehrhardt <[EMAIL PROTECTED]>
---
kvm.h | 63 --
kvm_main.c | 1431
----------------------------------------------------------
mmu.c | 2
svm.c | 1
vmx.c | 2
x86_emulate.c | 2
6 files changed, 12 insertions(+), 1489 deletions(-)
diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h
index a3dcc96..ff07e64 100644
--- a/drivers/kvm/kvm.h
+++ b/drivers/kvm/kvm.h
@@ -415,65 +415,6 @@ struct descriptor_table {
unsigned long base;
} __attribute__((packed));
-struct kvm_x86_ops {
- int (*cpu_has_kvm_support)(void); /* __init */
- int (*disabled_by_bios)(void); /* __init */
- void (*hardware_enable)(void *dummy); /* __init */
- void (*hardware_disable)(void *dummy);
- void (*check_processor_compatibility)(void *rtn);
- int (*hardware_setup)(void); /* __init */
- void (*hardware_unsetup)(void); /* __exit */
-
- /* Create, but do not attach this VCPU */
- struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
- void (*vcpu_free)(struct kvm_vcpu *vcpu);
-
- void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
- void (*vcpu_put)(struct kvm_vcpu *vcpu);
- void (*vcpu_decache)(struct kvm_vcpu *vcpu);
-
- int (*set_guest_debug)(struct kvm_vcpu *vcpu,
- struct kvm_debug_guest *dbg);
- int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
- int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
- u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
- void (*get_segment)(struct kvm_vcpu *vcpu,
- struct kvm_segment *var, int seg);
- 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_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);
- void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
- void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
- void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
- void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
- void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
- unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr);
- void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value,
- int *exception);
- void (*cache_regs)(struct kvm_vcpu *vcpu);
- void (*decache_regs)(struct kvm_vcpu *vcpu);
- unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
- void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
-
- void (*invlpg)(struct kvm_vcpu *vcpu, gva_t addr);
- void (*tlb_flush)(struct kvm_vcpu *vcpu);
- void (*inject_page_fault)(struct kvm_vcpu *vcpu,
- unsigned long addr, u32 err_code);
-
- void (*inject_gp)(struct kvm_vcpu *vcpu, unsigned err_code);
-
- int (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
- void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
- void (*patch_hypercall)(struct kvm_vcpu *vcpu,
- unsigned char *hypercall_addr);
-};
-
-extern struct kvm_x86_ops *kvm_x86_ops;
-
/* The guest did something we don't support. */
#define pr_unimpl(vcpu, fmt, ...) \
do { \
@@ -488,10 +429,6 @@ extern struct kvm_x86_ops *kvm_x86_ops;
int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
-int kvm_init_x86(struct kvm_x86_ops *ops, unsigned int vcpu_size,
- struct module *module);
-void kvm_exit_x86(void);
-
int kvm_mmu_module_init(void);
void kvm_mmu_module_exit(void);
diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
index 64c2cc4..6046665 100644
--- a/drivers/kvm/kvm_main.c
+++ b/drivers/kvm/kvm_main.c
@@ -16,33 +16,24 @@
*/
#include "kvm.h"
-#include "x86_emulate.h"
-#include "segment_descriptor.h"
-
#include <linux/kvm.h>
+#include "kvm_arch.h"
+
#include <linux/module.h>
-#include <linux/errno.h>
#include <linux/percpu.h>
-#include <linux/gfp.h>
-#include <linux/mm.h>
#include <linux/miscdevice.h>
#include <linux/vmalloc.h>
#include <linux/reboot.h>
#include <linux/debugfs.h>
-#include <linux/highmem.h>
#include <linux/file.h>
#include <linux/sysdev.h>
#include <linux/cpu.h>
-#include <linux/sched.h>
-#include <linux/cpumask.h>
#include <linux/smp.h>
#include <linux/anon_inodes.h>
+#include <linux/err.h>
+#include <linux/fs.h>
-#include <asm/processor.h>
-#include <asm/msr.h>
-#include <asm/io.h>
#include <asm/uaccess.h>
-#include <asm/desc.h>
MODULE_AUTHOR("Qumranet");
MODULE_LICENSE("GPL");
@@ -391,234 +382,6 @@ static int kvm_vm_release(struct inode *inode,
struct file *filp)
return 0;
}
-static void inject_gp(struct kvm_vcpu *vcpu)
-{
- kvm_x86_ops->inject_gp(vcpu, 0);
-}
-
-/*
- * Load the pae pdptrs. Return true is they are all valid.
- */
-static int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3)
-{
- gfn_t pdpt_gfn = cr3 >> PAGE_SHIFT;
- unsigned offset = ((cr3 & (PAGE_SIZE-1)) >> 5) << 2;
- int i;
- u64 *pdpt;
- int ret;
- struct page *page;
- u64 pdpte[ARRAY_SIZE(vcpu->pdptrs)];
-
- mutex_lock(&vcpu->kvm->lock);
- page = gfn_to_page(vcpu->kvm, pdpt_gfn);
- if (!page) {
- ret = 0;
- goto out;
- }
-
- pdpt = kmap_atomic(page, KM_USER0);
- memcpy(pdpte, pdpt+offset, sizeof(pdpte));
- kunmap_atomic(pdpt, KM_USER0);
-
- for (i = 0; i < ARRAY_SIZE(pdpte); ++i) {
- if ((pdpte[i] & 1) && (pdpte[i] & 0xfffffff0000001e6ull)) {
- ret = 0;
- goto out;
- }
- }
- ret = 1;
-
- memcpy(vcpu->pdptrs, pdpte, sizeof(vcpu->pdptrs));
-out:
- mutex_unlock(&vcpu->kvm->lock);
-
- return ret;
-}
-
-void set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
-{
- if (cr0 & CR0_RESERVED_BITS) {
- printk(KERN_DEBUG "set_cr0: 0x%lx #GP, reserved bits 0x%lx\n",
- cr0, vcpu->cr0);
- inject_gp(vcpu);
- return;
- }
-
- if ((cr0 & X86_CR0_NW) && !(cr0 & X86_CR0_CD)) {
- printk(KERN_DEBUG "set_cr0: #GP, CD == 0 && NW == 1\n");
- inject_gp(vcpu);
- return;
- }
-
- if ((cr0 & X86_CR0_PG) && !(cr0 & X86_CR0_PE)) {
- printk(KERN_DEBUG "set_cr0: #GP, set PG flag "
- "and a clear PE flag\n");
- inject_gp(vcpu);
- return;
- }
-
- if (!is_paging(vcpu) && (cr0 & X86_CR0_PG)) {
-#ifdef CONFIG_X86_64
- if ((vcpu->shadow_efer & EFER_LME)) {
- int cs_db, cs_l;
-
- if (!is_pae(vcpu)) {
- printk(KERN_DEBUG "set_cr0: #GP, start paging "
- "in long mode while PAE is disabled\n");
- inject_gp(vcpu);
- return;
- }
- kvm_x86_ops->get_cs_db_l_bits(vcpu, &cs_db, &cs_l);
- if (cs_l) {
- printk(KERN_DEBUG "set_cr0: #GP, start paging "
- "in long mode while CS.L == 1\n");
- inject_gp(vcpu);
- return;
-
- }
- } else
-#endif
- if (is_pae(vcpu) && !load_pdptrs(vcpu, vcpu->cr3)) {
- printk(KERN_DEBUG "set_cr0: #GP, pdptrs "
- "reserved bits\n");
- inject_gp(vcpu);
- return;
- }
-
- }
-
- kvm_x86_ops->set_cr0(vcpu, cr0);
- vcpu->cr0 = cr0;
-
- mutex_lock(&vcpu->kvm->lock);
- kvm_mmu_reset_context(vcpu);
- mutex_unlock(&vcpu->kvm->lock);
- return;
-}
-EXPORT_SYMBOL_GPL(set_cr0);
-
-void lmsw(struct kvm_vcpu *vcpu, unsigned long msw)
-{
- set_cr0(vcpu, (vcpu->cr0 & ~0x0ful) | (msw & 0x0f));
-}
-EXPORT_SYMBOL_GPL(lmsw);
-
-void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
-{
- if (cr4 & CR4_RESERVED_BITS) {
- printk(KERN_DEBUG "set_cr4: #GP, reserved bits\n");
- inject_gp(vcpu);
- return;
- }
-
- if (is_long_mode(vcpu)) {
- if (!(cr4 & X86_CR4_PAE)) {
- printk(KERN_DEBUG "set_cr4: #GP, clearing PAE while "
- "in long mode\n");
- inject_gp(vcpu);
- return;
- }
- } else if (is_paging(vcpu) && !is_pae(vcpu) && (cr4 & X86_CR4_PAE)
- && !load_pdptrs(vcpu, vcpu->cr3)) {
- printk(KERN_DEBUG "set_cr4: #GP, pdptrs reserved bits\n");
- inject_gp(vcpu);
- return;
- }
-
- if (cr4 & X86_CR4_VMXE) {
- printk(KERN_DEBUG "set_cr4: #GP, setting VMXE\n");
- inject_gp(vcpu);
- return;
- }
- kvm_x86_ops->set_cr4(vcpu, cr4);
- mutex_lock(&vcpu->kvm->lock);
- kvm_mmu_reset_context(vcpu);
- mutex_unlock(&vcpu->kvm->lock);
-}
-EXPORT_SYMBOL_GPL(set_cr4);
-
-void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3)
-{
- if (is_long_mode(vcpu)) {
- if (cr3 & CR3_L_MODE_RESERVED_BITS) {
- printk(KERN_DEBUG "set_cr3: #GP, reserved bits\n");
- inject_gp(vcpu);
- return;
- }
- } else {
- if (is_pae(vcpu)) {
- if (cr3 & CR3_PAE_RESERVED_BITS) {
- printk(KERN_DEBUG
- "set_cr3: #GP, reserved bits\n");
- inject_gp(vcpu);
- return;
- }
- if (is_paging(vcpu) && !load_pdptrs(vcpu, cr3)) {
- printk(KERN_DEBUG "set_cr3: #GP, pdptrs "
- "reserved bits\n");
- inject_gp(vcpu);
- return;
- }
- } else {
- if (cr3 & CR3_NONPAE_RESERVED_BITS) {
- printk(KERN_DEBUG
- "set_cr3: #GP, reserved bits\n");
- inject_gp(vcpu);
- return;
- }
- }
- }
-
- mutex_lock(&vcpu->kvm->lock);
- /*
- * Does the new cr3 value map to physical memory? (Note, we
- * catch an invalid cr3 even in real-mode, because it would
- * cause trouble later on when we turn on paging anyway.)
- *
- * A real CPU would silently accept an invalid cr3 and would
- * attempt to use it - with largely undefined (and often hard
- * to debug) behavior on the guest side.
- */
- if (unlikely(!gfn_to_memslot(vcpu->kvm, cr3 >> PAGE_SHIFT)))
- inject_gp(vcpu);
- else {
- vcpu->cr3 = cr3;
- vcpu->mmu.new_cr3(vcpu);
- }
- mutex_unlock(&vcpu->kvm->lock);
-}
-EXPORT_SYMBOL_GPL(set_cr3);
-
-void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8)
-{
- if (cr8 & CR8_RESERVED_BITS) {
- printk(KERN_DEBUG "set_cr8: #GP, reserved bits 0x%lx\n", cr8);
- inject_gp(vcpu);
- return;
- }
- vcpu->cr8 = cr8;
-}
-EXPORT_SYMBOL_GPL(set_cr8);
-
-void fx_init(struct kvm_vcpu *vcpu)
-{
- unsigned after_mxcsr_mask;
-
- /* Initialize guest FPU by resetting ours and saving into guest's */
- preempt_disable();
- fx_save(&vcpu->host_fx_image);
- fpu_init();
- fx_save(&vcpu->guest_fx_image);
- fx_restore(&vcpu->host_fx_image);
- preempt_enable();
-
- after_mxcsr_mask = offsetof(struct i387_fxsave_struct, st_space);
- vcpu->guest_fx_image.mxcsr = 0x1f80;
- memset((void *)&vcpu->guest_fx_image + after_mxcsr_mask,
- 0, sizeof(struct i387_fxsave_struct) - after_mxcsr_mask);
-}
-EXPORT_SYMBOL_GPL(fx_init);
-
/*
* Allocate some memory and give it an address in the guest physical
address
* space.
@@ -860,113 +623,7 @@ out:
return r;
}
-static gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn)
-{
- int i;
- struct kvm_mem_alias *alias;
-
- for (i = 0; i < kvm->naliases; ++i) {
- alias = &kvm->aliases[i];
- if (gfn >= alias->base_gfn
- && gfn < alias->base_gfn + alias->npages)
- return alias->target_gfn + gfn - alias->base_gfn;
- }
- return gfn;
-}
-
-static struct kvm_memory_slot *__gfn_to_memslot(struct kvm *kvm, gfn_t gfn)
-{
- int i;
-
- for (i = 0; i < kvm->nmemslots; ++i) {
- struct kvm_memory_slot *memslot = &kvm->memslots[i];
-
- if (gfn >= memslot->base_gfn
- && gfn < memslot->base_gfn + memslot->npages)
- return memslot;
- }
- return NULL;
-}
-
-struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn)
-{
- gfn = unalias_gfn(kvm, gfn);
- return __gfn_to_memslot(kvm, gfn);
-}
-
-struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn)
-{
- struct kvm_memory_slot *slot;
-
- gfn = unalias_gfn(kvm, gfn);
- slot = __gfn_to_memslot(kvm, gfn);
- if (!slot)
- return NULL;
- return slot->phys_mem[gfn - slot->base_gfn];
-}
-EXPORT_SYMBOL_GPL(gfn_to_page);
-
-/* WARNING: Does not work on aliased pages. */
-void mark_page_dirty(struct kvm *kvm, gfn_t gfn)
-{
- struct kvm_memory_slot *memslot;
-
- memslot = __gfn_to_memslot(kvm, gfn);
- if (memslot && memslot->dirty_bitmap) {
- unsigned long rel_gfn = gfn - memslot->base_gfn;
-
- /* avoid RMW */
- if (!test_bit(rel_gfn, memslot->dirty_bitmap))
- set_bit(rel_gfn, memslot->dirty_bitmap);
- }
-}
-
-int emulator_read_std(unsigned long addr,
- void *val,
- unsigned int bytes,
- struct kvm_vcpu *vcpu)
-{
- void *data = val;
-
- while (bytes) {
- gpa_t gpa = vcpu->mmu.gva_to_gpa(vcpu, addr);
- unsigned offset = addr & (PAGE_SIZE-1);
- unsigned tocopy = min(bytes, (unsigned)PAGE_SIZE - offset);
- unsigned long pfn;
- struct page *page;
- void *page_virt;
-
- if (gpa == UNMAPPED_GVA)
- return X86EMUL_PROPAGATE_FAULT;
- pfn = gpa >> PAGE_SHIFT;
- page = gfn_to_page(vcpu->kvm, pfn);
- if (!page)
- return X86EMUL_UNHANDLEABLE;
- page_virt = kmap_atomic(page, KM_USER0);
-
- memcpy(data, page_virt + offset, tocopy);
-
- kunmap_atomic(page_virt, KM_USER0);
-
- bytes -= tocopy;
- data += tocopy;
- addr += tocopy;
- }
-
- return X86EMUL_CONTINUE;
-}
-EXPORT_SYMBOL_GPL(emulator_read_std);
-
-static int emulator_write_std(unsigned long addr,
- const void *val,
- unsigned int bytes,
- struct kvm_vcpu *vcpu)
-{
- pr_unimpl(vcpu, "emulator_write_std: addr %lx n %d\n", addr, bytes);
- return X86EMUL_UNHANDLEABLE;
-}
-
-static struct kvm_io_device *vcpu_find_mmio_dev(struct kvm_vcpu *vcpu,
+struct kvm_io_device *vcpu_find_mmio_dev(struct kvm_vcpu *vcpu,
gpa_t addr)
{
/*
@@ -983,652 +640,6 @@ static struct kvm_io_device
*vcpu_find_pio_dev(struct kvm_vcpu *vcpu,
return kvm_io_bus_find_dev(&vcpu->kvm->pio_bus, addr);
}
-static int emulator_read_emulated(unsigned long addr,
- void *val,
- unsigned int bytes,
- struct kvm_vcpu *vcpu)
-{
- struct kvm_io_device *mmio_dev;
- gpa_t gpa;
-
- if (vcpu->mmio_read_completed) {
- memcpy(val, vcpu->mmio_data, bytes);
- vcpu->mmio_read_completed = 0;
- return X86EMUL_CONTINUE;
- } else if (emulator_read_std(addr, val, bytes, vcpu)
- == X86EMUL_CONTINUE)
- return X86EMUL_CONTINUE;
-
- gpa = vcpu->mmu.gva_to_gpa(vcpu, addr);
- if (gpa == UNMAPPED_GVA)
- return X86EMUL_PROPAGATE_FAULT;
-
- /*
- * Is this MMIO handled locally?
- */
- mmio_dev = vcpu_find_mmio_dev(vcpu, gpa);
- if (mmio_dev) {
- kvm_iodevice_read(mmio_dev, gpa, bytes, val);
- return X86EMUL_CONTINUE;
- }
-
- vcpu->mmio_needed = 1;
- vcpu->mmio_phys_addr = gpa;
- vcpu->mmio_size = bytes;
- vcpu->mmio_is_write = 0;
-
- return X86EMUL_UNHANDLEABLE;
-}
-
-static int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
- const void *val, int bytes)
-{
- struct page *page;
- void *virt;
-
- if (((gpa + bytes - 1) >> PAGE_SHIFT) != (gpa >> PAGE_SHIFT))
- return 0;
- page = gfn_to_page(vcpu->kvm, gpa >> PAGE_SHIFT);
- if (!page)
- return 0;
- mark_page_dirty(vcpu->kvm, gpa >> PAGE_SHIFT);
- virt = kmap_atomic(page, KM_USER0);
- kvm_mmu_pte_write(vcpu, gpa, val, bytes);
- memcpy(virt + offset_in_page(gpa), val, bytes);
- kunmap_atomic(virt, KM_USER0);
- return 1;
-}
-
-static int emulator_write_emulated_onepage(unsigned long addr,
- const void *val,
- unsigned int bytes,
- struct kvm_vcpu *vcpu)
-{
- struct kvm_io_device *mmio_dev;
- gpa_t gpa = vcpu->mmu.gva_to_gpa(vcpu, addr);
-
- if (gpa == UNMAPPED_GVA) {
- kvm_x86_ops->inject_page_fault(vcpu, addr, 2);
- return X86EMUL_PROPAGATE_FAULT;
- }
-
- if (emulator_write_phys(vcpu, gpa, val, bytes))
- return X86EMUL_CONTINUE;
-
- /*
- * Is this MMIO handled locally?
- */
- mmio_dev = vcpu_find_mmio_dev(vcpu, gpa);
- if (mmio_dev) {
- kvm_iodevice_write(mmio_dev, gpa, bytes, val);
- return X86EMUL_CONTINUE;
- }
-
- vcpu->mmio_needed = 1;
- vcpu->mmio_phys_addr = gpa;
- vcpu->mmio_size = bytes;
- vcpu->mmio_is_write = 1;
- memcpy(vcpu->mmio_data, val, bytes);
-
- return X86EMUL_CONTINUE;
-}
-
-int emulator_write_emulated(unsigned long addr,
- const void *val,
- unsigned int bytes,
- struct kvm_vcpu *vcpu)
-{
- /* Crossing a page boundary? */
- if (((addr + bytes - 1) ^ addr) & PAGE_MASK) {
- int rc, now;
-
- now = -addr & ~PAGE_MASK;
- rc = emulator_write_emulated_onepage(addr, val, now, vcpu);
- if (rc != X86EMUL_CONTINUE)
- return rc;
- addr += now;
- val += now;
- bytes -= now;
- }
- return emulator_write_emulated_onepage(addr, val, bytes, vcpu);
-}
-EXPORT_SYMBOL_GPL(emulator_write_emulated);
-
-static int emulator_cmpxchg_emulated(unsigned long addr,
- const void *old,
- const void *new,
- unsigned int bytes,
- struct kvm_vcpu *vcpu)
-{
- static int reported;
-
- if (!reported) {
- reported = 1;
- printk(KERN_WARNING "kvm: emulating exchange as write\n");
- }
- return emulator_write_emulated(addr, new, bytes, vcpu);
-}
-
-static unsigned long get_segment_base(struct kvm_vcpu *vcpu, int seg)
-{
- return kvm_x86_ops->get_segment_base(vcpu, seg);
-}
-
-int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address)
-{
- return X86EMUL_CONTINUE;
-}
-
-int emulate_clts(struct kvm_vcpu *vcpu)
-{
- unsigned long cr0;
-
- cr0 = vcpu->cr0 & ~X86_CR0_TS;
- kvm_x86_ops->set_cr0(vcpu, cr0);
- return X86EMUL_CONTINUE;
-}
-
-int emulator_get_dr(struct x86_emulate_ctxt* ctxt, int dr, unsigned
long *dest)
-{
- struct kvm_vcpu *vcpu = ctxt->vcpu;
-
- switch (dr) {
- case 0 ... 3:
- *dest = kvm_x86_ops->get_dr(vcpu, dr);
- return X86EMUL_CONTINUE;
- default:
- pr_unimpl(vcpu, "%s: unexpected dr %u\n", __FUNCTION__, dr);
- return X86EMUL_UNHANDLEABLE;
- }
-}
-
-int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr, unsigned
long value)
-{
- unsigned long mask = (ctxt->mode == X86EMUL_MODE_PROT64) ? ~0ULL : ~0U;
- int exception;
-
- kvm_x86_ops->set_dr(ctxt->vcpu, dr, value & mask, &exception);
- if (exception) {
- /* FIXME: better handling */
- return X86EMUL_UNHANDLEABLE;
- }
- return X86EMUL_CONTINUE;
-}
-
-static void report_emulation_failure(struct x86_emulate_ctxt *ctxt)
-{
- static int reported;
- u8 opcodes[4];
- unsigned long rip = ctxt->vcpu->rip;
- unsigned long rip_linear;
-
- rip_linear = rip + get_segment_base(ctxt->vcpu, VCPU_SREG_CS);
-
- if (reported)
- return;
-
- emulator_read_std(rip_linear, (void *)opcodes, 4, ctxt->vcpu);
-
- printk(KERN_ERR "emulation failed but !mmio_needed?"
- " rip %lx %02x %02x %02x %02x\n",
- rip, opcodes[0], opcodes[1], opcodes[2], opcodes[3]);
- reported = 1;
-}
-
-struct x86_emulate_ops emulate_ops = {
- .read_std = emulator_read_std,
- .write_std = emulator_write_std,
- .read_emulated = emulator_read_emulated,
- .write_emulated = emulator_write_emulated,
- .cmpxchg_emulated = emulator_cmpxchg_emulated,
-};
-
-int emulate_instruction(struct kvm_vcpu *vcpu,
- struct kvm_run *run,
- unsigned long cr2,
- u16 error_code)
-{
- struct x86_emulate_ctxt emulate_ctxt;
- int r;
- int cs_db, cs_l;
-
- vcpu->mmio_fault_cr2 = cr2;
- kvm_x86_ops->cache_regs(vcpu);
-
- kvm_x86_ops->get_cs_db_l_bits(vcpu, &cs_db, &cs_l);
-
- emulate_ctxt.vcpu = vcpu;
- emulate_ctxt.eflags = kvm_x86_ops->get_rflags(vcpu);
- emulate_ctxt.cr2 = cr2;
- emulate_ctxt.mode = (emulate_ctxt.eflags & X86_EFLAGS_VM)
- ? X86EMUL_MODE_REAL : cs_l
- ? X86EMUL_MODE_PROT64 : cs_db
- ? X86EMUL_MODE_PROT32 : X86EMUL_MODE_PROT16;
-
- if (emulate_ctxt.mode == X86EMUL_MODE_PROT64) {
- emulate_ctxt.cs_base = 0;
- emulate_ctxt.ds_base = 0;
- emulate_ctxt.es_base = 0;
- emulate_ctxt.ss_base = 0;
- } else {
- emulate_ctxt.cs_base = get_segment_base(vcpu, VCPU_SREG_CS);
- emulate_ctxt.ds_base = get_segment_base(vcpu, VCPU_SREG_DS);
- emulate_ctxt.es_base = get_segment_base(vcpu, VCPU_SREG_ES);
- emulate_ctxt.ss_base = get_segment_base(vcpu, VCPU_SREG_SS);
- }
-
- emulate_ctxt.gs_base = get_segment_base(vcpu, VCPU_SREG_GS);
- emulate_ctxt.fs_base = get_segment_base(vcpu, VCPU_SREG_FS);
-
- vcpu->mmio_is_write = 0;
- vcpu->pio.string = 0;
- r = x86_emulate_memop(&emulate_ctxt, &emulate_ops);
- if (vcpu->pio.string)
- return EMULATE_DO_MMIO;
-
- if ((r || vcpu->mmio_is_write) && run) {
- run->exit_reason = KVM_EXIT_MMIO;
- run->mmio.phys_addr = vcpu->mmio_phys_addr;
- memcpy(run->mmio.data, vcpu->mmio_data, 8);
- run->mmio.len = vcpu->mmio_size;
- run->mmio.is_write = vcpu->mmio_is_write;
- }
-
- if (r) {
- if (kvm_mmu_unprotect_page_virt(vcpu, cr2))
- return EMULATE_DONE;
- if (!vcpu->mmio_needed) {
- report_emulation_failure(&emulate_ctxt);
- return EMULATE_FAIL;
- }
- return EMULATE_DO_MMIO;
- }
-
- kvm_x86_ops->decache_regs(vcpu);
- kvm_x86_ops->set_rflags(vcpu, emulate_ctxt.eflags);
-
- if (vcpu->mmio_is_write) {
- vcpu->mmio_needed = 0;
- return EMULATE_DO_MMIO;
- }
-
- return EMULATE_DONE;
-}
-EXPORT_SYMBOL_GPL(emulate_instruction);
-
-int kvm_emulate_halt(struct kvm_vcpu *vcpu)
-{
- if (vcpu->irq_summary)
- return 1;
-
- vcpu->run->exit_reason = KVM_EXIT_HLT;
- ++vcpu->stat.halt_exits;
- return 0;
-}
-EXPORT_SYMBOL_GPL(kvm_emulate_halt);
-
-int kvm_hypercall(struct kvm_vcpu *vcpu, struct kvm_run *run)
-{
- unsigned long nr, a0, a1, a2, a3, a4, a5, ret;
-
- kvm_x86_ops->cache_regs(vcpu);
- ret = -KVM_EINVAL;
-#ifdef CONFIG_X86_64
- if (is_long_mode(vcpu)) {
- nr = vcpu->regs[VCPU_REGS_RAX];
- a0 = vcpu->regs[VCPU_REGS_RDI];
- a1 = vcpu->regs[VCPU_REGS_RSI];
- a2 = vcpu->regs[VCPU_REGS_RDX];
- a3 = vcpu->regs[VCPU_REGS_RCX];
- a4 = vcpu->regs[VCPU_REGS_R8];
- a5 = vcpu->regs[VCPU_REGS_R9];
- } else
-#endif
- {
- nr = vcpu->regs[VCPU_REGS_RBX] & -1u;
- a0 = vcpu->regs[VCPU_REGS_RAX] & -1u;
- a1 = vcpu->regs[VCPU_REGS_RCX] & -1u;
- a2 = vcpu->regs[VCPU_REGS_RDX] & -1u;
- a3 = vcpu->regs[VCPU_REGS_RSI] & -1u;
- a4 = vcpu->regs[VCPU_REGS_RDI] & -1u;
- a5 = vcpu->regs[VCPU_REGS_RBP] & -1u;
- }
- switch (nr) {
- default:
- run->hypercall.nr = nr;
- run->hypercall.args[0] = a0;
- run->hypercall.args[1] = a1;
- run->hypercall.args[2] = a2;
- run->hypercall.args[3] = a3;
- run->hypercall.args[4] = a4;
- run->hypercall.args[5] = a5;
- run->hypercall.ret = ret;
- run->hypercall.longmode = is_long_mode(vcpu);
- kvm_x86_ops->decache_regs(vcpu);
- return 0;
- }
- vcpu->regs[VCPU_REGS_RAX] = ret;
- kvm_x86_ops->decache_regs(vcpu);
- return 1;
-}
-EXPORT_SYMBOL_GPL(kvm_hypercall);
-
-static u64 mk_cr_64(u64 curr_cr, u32 new_val)
-{
- return (curr_cr & ~((1ULL << 32) - 1)) | new_val;
-}
-
-void realmode_lgdt(struct kvm_vcpu *vcpu, u16 limit, unsigned long base)
-{
- struct descriptor_table dt = { limit, base };
-
- kvm_x86_ops->set_gdt(vcpu, &dt);
-}
-
-void realmode_lidt(struct kvm_vcpu *vcpu, u16 limit, unsigned long base)
-{
- struct descriptor_table dt = { limit, base };
-
- kvm_x86_ops->set_idt(vcpu, &dt);
-}
-
-void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
- unsigned long *rflags)
-{
- lmsw(vcpu, msw);
- *rflags = kvm_x86_ops->get_rflags(vcpu);
-}
-
-unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr)
-{
- kvm_x86_ops->decache_cr4_guest_bits(vcpu);
- switch (cr) {
- case 0:
- return vcpu->cr0;
- case 2:
- return vcpu->cr2;
- case 3:
- return vcpu->cr3;
- case 4:
- return vcpu->cr4;
- default:
- vcpu_printf(vcpu, "%s: unexpected cr %u\n", __FUNCTION__, cr);
- return 0;
- }
-}
-
-void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long val,
- unsigned long *rflags)
-{
- switch (cr) {
- case 0:
- set_cr0(vcpu, mk_cr_64(vcpu->cr0, val));
- *rflags = kvm_x86_ops->get_rflags(vcpu);
- break;
- case 2:
- vcpu->cr2 = val;
- break;
- case 3:
- set_cr3(vcpu, val);
- break;
- case 4:
- set_cr4(vcpu, mk_cr_64(vcpu->cr4, val));
- break;
- default:
- vcpu_printf(vcpu, "%s: unexpected cr %u\n", __FUNCTION__, cr);
- }
-}
-
-/*
- * Register the para guest with the host:
- */
-static int vcpu_register_para(struct kvm_vcpu *vcpu, gpa_t para_state_gpa)
-{
- struct kvm_vcpu_para_state *para_state;
- hpa_t para_state_hpa, hypercall_hpa;
- struct page *para_state_page;
- unsigned char *hypercall;
- gpa_t hypercall_gpa;
-
- printk(KERN_DEBUG "kvm: guest trying to enter paravirtual mode\n");
- printk(KERN_DEBUG ".... para_state_gpa: %08Lx\n", para_state_gpa);
-
- /*
- * Needs to be page aligned:
- */
- if (para_state_gpa != PAGE_ALIGN(para_state_gpa))
- goto err_gp;
-
- para_state_hpa = gpa_to_hpa(vcpu, para_state_gpa);
- printk(KERN_DEBUG ".... para_state_hpa: %08Lx\n", para_state_hpa);
- if (is_error_hpa(para_state_hpa))
- goto err_gp;
-
- mark_page_dirty(vcpu->kvm, para_state_gpa >> PAGE_SHIFT);
- para_state_page = pfn_to_page(para_state_hpa >> PAGE_SHIFT);
- para_state = kmap(para_state_page);
-
- printk(KERN_DEBUG ".... guest version: %d\n",
para_state->guest_version);
- printk(KERN_DEBUG ".... size: %d\n", para_state->size);
-
- para_state->host_version = KVM_PARA_API_VERSION;
- /*
- * We cannot support guests that try to register themselves
- * with a newer API version than the host supports:
- */
- if (para_state->guest_version > KVM_PARA_API_VERSION) {
- para_state->ret = -KVM_EINVAL;
- goto err_kunmap_skip;
- }
-
- hypercall_gpa = para_state->hypercall_gpa;
- hypercall_hpa = gpa_to_hpa(vcpu, hypercall_gpa);
- printk(KERN_DEBUG ".... hypercall_hpa: %08Lx\n", hypercall_hpa);
- if (is_error_hpa(hypercall_hpa)) {
- para_state->ret = -KVM_EINVAL;
- goto err_kunmap_skip;
- }
-
- printk(KERN_DEBUG "kvm: para guest successfully registered.\n");
- vcpu->para_state_page = para_state_page;
- vcpu->para_state_gpa = para_state_gpa;
- vcpu->hypercall_gpa = hypercall_gpa;
-
- mark_page_dirty(vcpu->kvm, hypercall_gpa >> PAGE_SHIFT);
- hypercall = kmap_atomic(pfn_to_page(hypercall_hpa >> PAGE_SHIFT),
- KM_USER1) + (hypercall_hpa & ~PAGE_MASK);
- kvm_x86_ops->patch_hypercall(vcpu, hypercall);
- kunmap_atomic(hypercall, KM_USER1);
-
- para_state->ret = 0;
-err_kunmap_skip:
- kunmap(para_state_page);
- return 0;
-err_gp:
- return 1;
-}
-
-int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
-{
- u64 data;
-
- switch (msr) {
- case 0xc0010010: /* SYSCFG */
- case 0xc0010015: /* HWCR */
- case MSR_IA32_PLATFORM_ID:
- case MSR_IA32_P5_MC_ADDR:
- case MSR_IA32_P5_MC_TYPE:
- case MSR_IA32_MC0_CTL:
- case MSR_IA32_MCG_STATUS:
- case MSR_IA32_MCG_CAP:
- case MSR_IA32_MC0_MISC:
- case MSR_IA32_MC0_MISC+4:
- case MSR_IA32_MC0_MISC+8:
- case MSR_IA32_MC0_MISC+12:
- case MSR_IA32_MC0_MISC+16:
- case MSR_IA32_UCODE_REV:
- case MSR_IA32_PERF_STATUS:
- case MSR_IA32_EBL_CR_POWERON:
- /* MTRR registers */
- case 0xfe:
- case 0x200 ... 0x2ff:
- data = 0;
- break;
- case 0xcd: /* fsb frequency */
- data = 3;
- break;
- case MSR_IA32_APICBASE:
- data = vcpu->apic_base;
- break;
- case MSR_IA32_MISC_ENABLE:
- data = vcpu->ia32_misc_enable_msr;
- break;
-#ifdef CONFIG_X86_64
- case MSR_EFER:
- data = vcpu->shadow_efer;
- break;
-#endif
- default:
- pr_unimpl(vcpu, "unhandled rdmsr: 0x%x\n", msr);
- return 1;
- }
- *pdata = data;
- return 0;
-}
-EXPORT_SYMBOL_GPL(kvm_get_msr_common);
-
-/*
- * Reads an msr value (of 'msr_index') into 'pdata'.
- * Returns 0 on success, non-0 otherwise.
- * Assumes vcpu_load() was already called.
- */
-int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata)
-{
- return kvm_x86_ops->get_msr(vcpu, msr_index, pdata);
-}
-
-#ifdef CONFIG_X86_64
-
-static void set_efer(struct kvm_vcpu *vcpu, u64 efer)
-{
- if (efer & EFER_RESERVED_BITS) {
- printk(KERN_DEBUG "set_efer: 0x%llx #GP, reserved bits\n",
- efer);
- inject_gp(vcpu);
- return;
- }
-
- if (is_paging(vcpu)
- && (vcpu->shadow_efer & EFER_LME) != (efer & EFER_LME)) {
- printk(KERN_DEBUG "set_efer: #GP, change LME while paging\n");
- inject_gp(vcpu);
- return;
- }
-
- kvm_x86_ops->set_efer(vcpu, efer);
-
- efer &= ~EFER_LMA;
- efer |= vcpu->shadow_efer & EFER_LMA;
-
- vcpu->shadow_efer = efer;
-}
-
-#endif
-
-int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data)
-{
- switch (msr) {
-#ifdef CONFIG_X86_64
- case MSR_EFER:
- set_efer(vcpu, data);
- break;
-#endif
- case MSR_IA32_MC0_STATUS:
- pr_unimpl(vcpu, "%s: MSR_IA32_MC0_STATUS 0x%llx, nop\n",
- __FUNCTION__, data);
- break;
- case MSR_IA32_MCG_STATUS:
- pr_unimpl(vcpu, "%s: MSR_IA32_MCG_STATUS 0x%llx, nop\n",
- __FUNCTION__, data);
- break;
- case MSR_IA32_UCODE_REV:
- case MSR_IA32_UCODE_WRITE:
- case 0x200 ... 0x2ff: /* MTRRs */
- break;
- case MSR_IA32_APICBASE:
- vcpu->apic_base = data;
- break;
- case MSR_IA32_MISC_ENABLE:
- vcpu->ia32_misc_enable_msr = data;
- break;
- /*
- * This is the 'probe whether the host is KVM' logic:
- */
- case MSR_KVM_API_MAGIC:
- return vcpu_register_para(vcpu, data);
-
- default:
- pr_unimpl(vcpu, "unhandled wrmsr: 0x%x\n", msr);
- return 1;
- }
- return 0;
-}
-EXPORT_SYMBOL_GPL(kvm_set_msr_common);
-
-/*
- * Writes msr value into into the appropriate "register".
- * Returns 0 on success, non-0 otherwise.
- * Assumes vcpu_load() was already called.
- */
-int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data)
-{
- return kvm_x86_ops->set_msr(vcpu, msr_index, data);
-}
-
-void kvm_resched(struct kvm_vcpu *vcpu)
-{
- if (!need_resched())
- return;
- cond_resched();
-}
-EXPORT_SYMBOL_GPL(kvm_resched);
-
-void kvm_emulate_cpuid(struct kvm_vcpu *vcpu)
-{
- int i;
- u32 function;
- struct kvm_cpuid_entry *e, *best;
-
- kvm_x86_ops->cache_regs(vcpu);
- function = vcpu->regs[VCPU_REGS_RAX];
- vcpu->regs[VCPU_REGS_RAX] = 0;
- vcpu->regs[VCPU_REGS_RBX] = 0;
- vcpu->regs[VCPU_REGS_RCX] = 0;
- vcpu->regs[VCPU_REGS_RDX] = 0;
- best = NULL;
- for (i = 0; i < vcpu->cpuid_nent; ++i) {
- e = &vcpu->cpuid_entries[i];
- if (e->function == function) {
- best = e;
- break;
- }
- /*
- * Both basic or both extended?
- */
- if (((e->function ^ function) & 0x80000000) == 0)
- if (!best || e->function > best->function)
- best = e;
- }
- if (best) {
- vcpu->regs[VCPU_REGS_RAX] = best->eax;
- vcpu->regs[VCPU_REGS_RBX] = best->ebx;
- vcpu->regs[VCPU_REGS_RCX] = best->ecx;
- vcpu->regs[VCPU_REGS_RDX] = best->edx;
- }
- kvm_x86_ops->decache_regs(vcpu);
- kvm_x86_ops->skip_emulated_instruction(vcpu);
-}
-EXPORT_SYMBOL_GPL(kvm_emulate_cpuid);
static int pio_copy_data(struct kvm_vcpu *vcpu)
{
@@ -1851,363 +862,6 @@ int kvm_emulate_pio_string(struct kvm_vcpu *vcpu,
struct kvm_run *run, int in,
}
EXPORT_SYMBOL_GPL(kvm_emulate_pio_string);
-static int kvm_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run
*kvm_run)
-{
- int r;
- sigset_t sigsaved;
-
- vcpu_load(vcpu);
-
- if (vcpu->sigset_active)
- sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
-
- /* re-sync apic's tpr */
- vcpu->cr8 = kvm_run->cr8;
-
- if (vcpu->pio.cur_count) {
- r = complete_pio(vcpu);
- if (r)
- goto out;
- }
-
- if (vcpu->mmio_needed) {
- memcpy(vcpu->mmio_data, kvm_run->mmio.data, 8);
- vcpu->mmio_read_completed = 1;
- vcpu->mmio_needed = 0;
- r = emulate_instruction(vcpu, kvm_run,
- vcpu->mmio_fault_cr2, 0);
- if (r == EMULATE_DO_MMIO) {
- /*
- * Read-modify-write. Back to userspace.
- */
- r = 0;
- goto out;
- }
- }
-
- if (kvm_run->exit_reason == KVM_EXIT_HYPERCALL) {
- kvm_x86_ops->cache_regs(vcpu);
- vcpu->regs[VCPU_REGS_RAX] = kvm_run->hypercall.ret;
- kvm_x86_ops->decache_regs(vcpu);
- }
-
- r = kvm_x86_ops->run(vcpu, kvm_run);
-
-out:
- if (vcpu->sigset_active)
- sigprocmask(SIG_SETMASK, &sigsaved, NULL);
-
- vcpu_put(vcpu);
- return r;
-}
-
-static int kvm_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu,
- struct kvm_regs *regs)
-{
- vcpu_load(vcpu);
-
- kvm_x86_ops->cache_regs(vcpu);
-
- regs->rax = vcpu->regs[VCPU_REGS_RAX];
- regs->rbx = vcpu->regs[VCPU_REGS_RBX];
- regs->rcx = vcpu->regs[VCPU_REGS_RCX];
- regs->rdx = vcpu->regs[VCPU_REGS_RDX];
- regs->rsi = vcpu->regs[VCPU_REGS_RSI];
- regs->rdi = vcpu->regs[VCPU_REGS_RDI];
- regs->rsp = vcpu->regs[VCPU_REGS_RSP];
- regs->rbp = vcpu->regs[VCPU_REGS_RBP];
-#ifdef CONFIG_X86_64
- regs->r8 = vcpu->regs[VCPU_REGS_R8];
- regs->r9 = vcpu->regs[VCPU_REGS_R9];
- regs->r10 = vcpu->regs[VCPU_REGS_R10];
- regs->r11 = vcpu->regs[VCPU_REGS_R11];
- regs->r12 = vcpu->regs[VCPU_REGS_R12];
- regs->r13 = vcpu->regs[VCPU_REGS_R13];
- regs->r14 = vcpu->regs[VCPU_REGS_R14];
- regs->r15 = vcpu->regs[VCPU_REGS_R15];
-#endif
-
- regs->rip = vcpu->rip;
- regs->rflags = kvm_x86_ops->get_rflags(vcpu);
-
- /*
- * Don't leak debug flags in case they were set for guest debugging
- */
- if (vcpu->guest_debug.enabled && vcpu->guest_debug.singlestep)
- regs->rflags &= ~(X86_EFLAGS_TF | X86_EFLAGS_RF);
-
- vcpu_put(vcpu);
-
- return 0;
-}
-
-static int kvm_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu,
- struct kvm_regs *regs)
-{
- vcpu_load(vcpu);
-
- vcpu->regs[VCPU_REGS_RAX] = regs->rax;
- vcpu->regs[VCPU_REGS_RBX] = regs->rbx;
- vcpu->regs[VCPU_REGS_RCX] = regs->rcx;
- vcpu->regs[VCPU_REGS_RDX] = regs->rdx;
- vcpu->regs[VCPU_REGS_RSI] = regs->rsi;
- vcpu->regs[VCPU_REGS_RDI] = regs->rdi;
- vcpu->regs[VCPU_REGS_RSP] = regs->rsp;
- vcpu->regs[VCPU_REGS_RBP] = regs->rbp;
-#ifdef CONFIG_X86_64
- vcpu->regs[VCPU_REGS_R8] = regs->r8;
- vcpu->regs[VCPU_REGS_R9] = regs->r9;
- vcpu->regs[VCPU_REGS_R10] = regs->r10;
- vcpu->regs[VCPU_REGS_R11] = regs->r11;
- vcpu->regs[VCPU_REGS_R12] = regs->r12;
- vcpu->regs[VCPU_REGS_R13] = regs->r13;
- vcpu->regs[VCPU_REGS_R14] = regs->r14;
- vcpu->regs[VCPU_REGS_R15] = regs->r15;
-#endif
-
- vcpu->rip = regs->rip;
- kvm_x86_ops->set_rflags(vcpu, regs->rflags);
-
- kvm_x86_ops->decache_regs(vcpu);
-
- vcpu_put(vcpu);
-
- return 0;
-}
-
-static void get_segment(struct kvm_vcpu *vcpu,
- struct kvm_segment *var, int seg)
-{
- return kvm_x86_ops->get_segment(vcpu, var, seg);
-}
-
-static int kvm_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
- struct kvm_sregs *sregs)
-{
- struct descriptor_table dt;
-
- vcpu_load(vcpu);
-
- get_segment(vcpu, &sregs->cs, VCPU_SREG_CS);
- get_segment(vcpu, &sregs->ds, VCPU_SREG_DS);
- get_segment(vcpu, &sregs->es, VCPU_SREG_ES);
- get_segment(vcpu, &sregs->fs, VCPU_SREG_FS);
- get_segment(vcpu, &sregs->gs, VCPU_SREG_GS);
- get_segment(vcpu, &sregs->ss, VCPU_SREG_SS);
-
- get_segment(vcpu, &sregs->tr, VCPU_SREG_TR);
- get_segment(vcpu, &sregs->ldt, VCPU_SREG_LDTR);
-
- kvm_x86_ops->get_idt(vcpu, &dt);
- sregs->idt.limit = dt.limit;
- sregs->idt.base = dt.base;
- kvm_x86_ops->get_gdt(vcpu, &dt);
- sregs->gdt.limit = dt.limit;
- sregs->gdt.base = dt.base;
-
- kvm_x86_ops->decache_cr4_guest_bits(vcpu);
- sregs->cr0 = vcpu->cr0;
- sregs->cr2 = vcpu->cr2;
- sregs->cr3 = vcpu->cr3;
- sregs->cr4 = vcpu->cr4;
- sregs->cr8 = vcpu->cr8;
- sregs->efer = vcpu->shadow_efer;
- sregs->apic_base = vcpu->apic_base;
-
- memcpy(sregs->interrupt_bitmap, vcpu->irq_pending,
- sizeof sregs->interrupt_bitmap);
-
- vcpu_put(vcpu);
-
- return 0;
-}
-
-static void set_segment(struct kvm_vcpu *vcpu,
- struct kvm_segment *var, int seg)
-{
- return kvm_x86_ops->set_segment(vcpu, var, seg);
-}
-
-static int kvm_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
- struct kvm_sregs *sregs)
-{
- int mmu_reset_needed = 0;
- int i;
- struct descriptor_table dt;
-
- vcpu_load(vcpu);
-
- dt.limit = sregs->idt.limit;
- dt.base = sregs->idt.base;
- kvm_x86_ops->set_idt(vcpu, &dt);
- dt.limit = sregs->gdt.limit;
- dt.base = sregs->gdt.base;
- kvm_x86_ops->set_gdt(vcpu, &dt);
-
- vcpu->cr2 = sregs->cr2;
- mmu_reset_needed |= vcpu->cr3 != sregs->cr3;
- vcpu->cr3 = sregs->cr3;
-
- vcpu->cr8 = sregs->cr8;
-
- mmu_reset_needed |= vcpu->shadow_efer != sregs->efer;
-#ifdef CONFIG_X86_64
- kvm_x86_ops->set_efer(vcpu, sregs->efer);
-#endif
- vcpu->apic_base = sregs->apic_base;
-
- kvm_x86_ops->decache_cr4_guest_bits(vcpu);
-
- mmu_reset_needed |= vcpu->cr0 != sregs->cr0;
- kvm_x86_ops->set_cr0(vcpu, sregs->cr0);
-
- mmu_reset_needed |= vcpu->cr4 != sregs->cr4;
- kvm_x86_ops->set_cr4(vcpu, sregs->cr4);
- if (!is_long_mode(vcpu) && is_pae(vcpu))
- load_pdptrs(vcpu, vcpu->cr3);
-
- if (mmu_reset_needed)
- kvm_mmu_reset_context(vcpu);
-
- memcpy(vcpu->irq_pending, sregs->interrupt_bitmap,
- sizeof vcpu->irq_pending);
- vcpu->irq_summary = 0;
- for (i = 0; i < ARRAY_SIZE(vcpu->irq_pending); ++i)
- if (vcpu->irq_pending[i])
- __set_bit(i, &vcpu->irq_summary);
-
- set_segment(vcpu, &sregs->cs, VCPU_SREG_CS);
- set_segment(vcpu, &sregs->ds, VCPU_SREG_DS);
- set_segment(vcpu, &sregs->es, VCPU_SREG_ES);
- set_segment(vcpu, &sregs->fs, VCPU_SREG_FS);
- set_segment(vcpu, &sregs->gs, VCPU_SREG_GS);
- set_segment(vcpu, &sregs->ss, VCPU_SREG_SS);
-
- set_segment(vcpu, &sregs->tr, VCPU_SREG_TR);
- set_segment(vcpu, &sregs->ldt, VCPU_SREG_LDTR);
-
- vcpu_put(vcpu);
-
- return 0;
-}
-
-/*
- * List of msr numbers which we expose to userspace through KVM_GET_MSRS
- * and KVM_SET_MSRS, and KVM_GET_MSR_INDEX_LIST.
- *
- * This list is modified at module load time to reflect the
- * capabilities of the host cpu.
- */
-static u32 msrs_to_save[] = {
- MSR_IA32_SYSENTER_CS, MSR_IA32_SYSENTER_ESP, MSR_IA32_SYSENTER_EIP,
- MSR_K6_STAR,
-#ifdef CONFIG_X86_64
- MSR_CSTAR, MSR_KERNEL_GS_BASE, MSR_SYSCALL_MASK, MSR_LSTAR,
-#endif
- MSR_IA32_TIME_STAMP_COUNTER,
-};
-
-static unsigned num_msrs_to_save;
-
-static u32 emulated_msrs[] = {
- MSR_IA32_MISC_ENABLE,
-};
-
-static __init void kvm_init_msr_list(void)
-{
- u32 dummy[2];
- unsigned i, j;
-
- for (i = j = 0; i < ARRAY_SIZE(msrs_to_save); i++) {
- if (rdmsr_safe(msrs_to_save[i], &dummy[0], &dummy[1]) < 0)
- continue;
- if (j < i)
- msrs_to_save[j] = msrs_to_save[i];
- j++;
- }
- num_msrs_to_save = j;
-}
-
-/*
- * Adapt set_msr() to msr_io()'s calling convention
- */
-static int do_set_msr(struct kvm_vcpu *vcpu, unsigned index, u64 *data)
-{
- return kvm_set_msr(vcpu, index, *data);
-}
-
-/*
- * Read or write a bunch of msrs. All parameters are kernel addresses.
- *
- * @return number of msrs set successfully.
- */
-static int __msr_io(struct kvm_vcpu *vcpu, struct kvm_msrs *msrs,
- struct kvm_msr_entry *entries,
- int (*do_msr)(struct kvm_vcpu *vcpu,
- unsigned index, u64 *data))
-{
- int i;
-
- vcpu_load(vcpu);
-
- for (i = 0; i < msrs->nmsrs; ++i)
- if (do_msr(vcpu, entries[i].index, &entries[i].data))
- break;
-
- vcpu_put(vcpu);
-
- return i;
-}
-
-/*
- * Read or write a bunch of msrs. Parameters are user addresses.
- *
- * @return number of msrs set successfully.
- */
-static int msr_io(struct kvm_vcpu *vcpu, struct kvm_msrs __user *user_msrs,
- int (*do_msr)(struct kvm_vcpu *vcpu,
- unsigned index, u64 *data),
- int writeback)
-{
- struct kvm_msrs msrs;
- struct kvm_msr_entry *entries;
- int r, n;
- unsigned size;
-
- r = -EFAULT;
- if (copy_from_user(&msrs, user_msrs, sizeof msrs))
- goto out;
-
- r = -E2BIG;
- if (msrs.nmsrs >= MAX_IO_MSRS)
- goto out;
-
- r = -ENOMEM;
- size = sizeof(struct kvm_msr_entry) * msrs.nmsrs;
- entries = vmalloc(size);
- if (!entries)
- goto out;
-
- r = -EFAULT;
- if (copy_from_user(entries, user_msrs->entries, size))
- goto out_free;
-
- r = n = __msr_io(vcpu, &msrs, entries, do_msr);
- if (r < 0)
- goto out_free;
-
- r = -EFAULT;
- if (writeback && copy_to_user(user_msrs->entries, entries, size))
- goto out_free;
-
- r = n;
-
-out_free:
- vfree(entries);
-out:
- return r;
-}
-
/*
* Translate a guest virtual address to a guest physical address.
*/
@@ -2245,20 +899,6 @@ static int kvm_vcpu_ioctl_interrupt(struct
kvm_vcpu *vcpu,
return 0;
}
-static int kvm_vcpu_ioctl_debug_guest(struct kvm_vcpu *vcpu,
- struct kvm_debug_guest *dbg)
-{
- int r;
-
- vcpu_load(vcpu);
-
- r = kvm_x86_ops->set_guest_debug(vcpu, dbg);
-
- vcpu_put(vcpu);
-
- return r;
-}
-
static struct page *kvm_vcpu_nopage(struct vm_area_struct *vma,
unsigned long address,
int *type)
@@ -2432,67 +1072,6 @@ static int kvm_vcpu_ioctl_set_sigmask(struct
kvm_vcpu *vcpu, sigset_t *sigset)
return 0;
}
-/*
- * fxsave fpu state. Taken from x86_64/processor.h. To be killed when
- * we have asm/x86/processor.h
- */
-struct fxsave {
- u16 cwd;
- u16 swd;
- u16 twd;
- u16 fop;
- u64 rip;
- u64 rdp;
- u32 mxcsr;
- u32 mxcsr_mask;
- u32 st_space[32]; /* 8*16 bytes for each FP-reg = 128 bytes */
-#ifdef CONFIG_X86_64
- u32 xmm_space[64]; /* 16*16 bytes for each XMM-reg = 256 bytes */
-#else
- u32 xmm_space[32]; /* 8*16 bytes for each XMM-reg = 128 bytes */
-#endif
-};
-
-static int kvm_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu
*fpu)
-{
- struct fxsave *fxsave = (struct fxsave *)&vcpu->guest_fx_image;
-
- vcpu_load(vcpu);
-
- memcpy(fpu->fpr, fxsave->st_space, 128);
- fpu->fcw = fxsave->cwd;
- fpu->fsw = fxsave->swd;
- fpu->ftwx = fxsave->twd;
- fpu->last_opcode = fxsave->fop;
- fpu->last_ip = fxsave->rip;
- fpu->last_dp = fxsave->rdp;
- memcpy(fpu->xmm, fxsave->xmm_space, sizeof fxsave->xmm_space);
-
- vcpu_put(vcpu);
-
- return 0;
-}
-
-static int kvm_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu
*fpu)
-{
- struct fxsave *fxsave = (struct fxsave *)&vcpu->guest_fx_image;
-
- vcpu_load(vcpu);
-
- memcpy(fxsave->st_space, fpu->fpr, 128);
- fxsave->cwd = fpu->fcw;
- fxsave->swd = fpu->fsw;
- fxsave->twd = fpu->ftwx;
- fxsave->fop = fpu->last_opcode;
- fxsave->rip = fpu->last_ip;
- fxsave->rdp = fpu->last_dp;
- memcpy(fxsave->xmm_space, fpu->xmm, sizeof fxsave->xmm_space);
-
- vcpu_put(vcpu);
-
- return 0;
-}
-
static long kvm_vcpu_ioctl(struct file *filp,
unsigned int ioctl, unsigned long arg)
{
diff --git a/drivers/kvm/mmu.c b/drivers/kvm/mmu.c
index ce072f8..3c623ab 100644
--- a/drivers/kvm/mmu.c
+++ b/drivers/kvm/mmu.c
@@ -19,6 +19,8 @@
#include "vmx.h"
#include "kvm.h"
+#include "kvm_arch.h"
+#include "x86.h"
#include <linux/types.h>
#include <linux/string.h>
diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c
index 170d9ac..9e19bac 100644
--- a/drivers/kvm/svm.c
+++ b/drivers/kvm/svm.c
@@ -15,6 +15,7 @@
*/
#include "kvm_svm.h"
+#include "x86.h"
#include "x86_emulate.h"
#include <linux/module.h>
diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c
index 1a6c675..124e210 100644
--- a/drivers/kvm/vmx.c
+++ b/drivers/kvm/vmx.c
@@ -16,6 +16,8 @@
*/
#include "kvm.h"
+#include "kvm_arch.h"
+#include "x86.h"
#include "x86_emulate.h"
#include "vmx.h"
#include "segment_descriptor.h"
diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c
index c8ad1e8..c3e1941 100644
--- a/drivers/kvm/x86_emulate.c
+++ b/drivers/kvm/x86_emulate.c
@@ -26,6 +26,8 @@
#define DPRINTF(_f, _a ...) printf( _f , ## _a )
#else
#include "kvm.h"
+#include "kvm_arch.h"
+#include "x86.h"
#define DPRINTF(x...) do {} while (0)
#endif
#include "x86_emulate.h"
--
Grüsse / regards,
Christian Ehrhardt
IBM Linux Technology Center, Open Virtualization
+49 7031/16-3385
[EMAIL PROTECTED]
[EMAIL PROTECTED]
IBM Deutschland Entwicklung GmbH
Vorsitzender des Aufsichtsrats: Johann Weihen
Geschäftsführung: Herbert Kircher
Sitz der Gesellschaft: Böblingen
Registergericht: Amtsgericht Stuttgart, HRB 243294
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