Commit a2fa3e9f authored by Gregory Haskins's avatar Gregory Haskins Committed by Avi Kivity
Browse files

KVM: Remove arch specific components from the general code 



struct kvm_vcpu has vmx-specific members; remove them to a private structure.

Signed-off-by: default avatarGregory Haskins <ghaskins@novell.com>
Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
parent c820c2aa

drivers/kvm/kvm.h

+2 −29
Original line number Diff line number Diff line
@@ -15,7 +15,6 @@ 
#include <linux/mm.h>

#include <asm/signal.h>



#include "vmx.h"

#include <linux/kvm.h>

#include <linux/kvm_para.h>
@@ -140,14 +139,6 @@ struct kvm_mmu_page { 
	};

};



struct vmcs {

	u32 revision_id;

	u32 abort;

	char data[0];

};



#define vmx_msr_entry kvm_msr_entry



struct kvm_vcpu;



/*
@@ -309,15 +300,12 @@ void kvm_io_bus_register_dev(struct kvm_io_bus *bus, 
			     struct kvm_io_device *dev);



struct kvm_vcpu {

	int valid;

	struct kvm *kvm;

	int vcpu_id;

	union {

		struct vmcs *vmcs;

		struct vcpu_svm *svm;

	};

	void *_priv;

	struct mutex mutex;

	int   cpu;

	int   launched;

	u64 host_tsc;

	struct kvm_run *run;

	int interrupt_window_open;
@@ -340,14 +328,6 @@ struct kvm_vcpu { 
	u64 shadow_efer;

	u64 apic_base;

	u64 ia32_misc_enable_msr;

	int nmsrs;

	int save_nmsrs;

	int msr_offset_efer;

#ifdef CONFIG_X86_64

	int msr_offset_kernel_gs_base;

#endif

	struct vmx_msr_entry *guest_msrs;

	struct vmx_msr_entry *host_msrs;



	struct kvm_mmu mmu;
@@ -366,11 +346,6 @@ struct kvm_vcpu { 
	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;
@@ -579,8 +554,6 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data); 


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);

drivers/kvm/kvm_main.c

+5 −21
Original line number Diff line number Diff line
@@ -367,7 +367,7 @@ static void free_pio_guest_pages(struct kvm_vcpu *vcpu) 


static void kvm_unload_vcpu_mmu(struct kvm_vcpu *vcpu)

{

	if (!vcpu->vmcs)

	if (!vcpu->valid)

		return;



	vcpu_load(vcpu);
@@ -377,7 +377,7 @@ static void kvm_unload_vcpu_mmu(struct kvm_vcpu *vcpu) 


static void kvm_free_vcpu(struct kvm_vcpu *vcpu)

{

	if (!vcpu->vmcs)

	if (!vcpu->valid)

		return;



	vcpu_load(vcpu);
@@ -1645,24 +1645,6 @@ void kvm_resched(struct kvm_vcpu *vcpu) 
}

EXPORT_SYMBOL_GPL(kvm_resched);



void load_msrs(struct vmx_msr_entry *e, int n)

{

	int i;



	for (i = 0; i < n; ++i)

		wrmsrl(e[i].index, e[i].data);

}

EXPORT_SYMBOL_GPL(load_msrs);



void save_msrs(struct vmx_msr_entry *e, int n)

{

	int i;



	for (i = 0; i < n; ++i)

		rdmsrl(e[i].index, e[i].data);

}

EXPORT_SYMBOL_GPL(save_msrs);



void kvm_emulate_cpuid(struct kvm_vcpu *vcpu)

{

	int i;
@@ -2401,7 +2383,7 @@ static int kvm_vm_ioctl_create_vcpu(struct kvm *kvm, int n) 


	mutex_lock(&vcpu->mutex);



	if (vcpu->vmcs) {

	if (vcpu->valid) {

		mutex_unlock(&vcpu->mutex);

		return -EEXIST;

	}
@@ -2449,6 +2431,8 @@ static int kvm_vm_ioctl_create_vcpu(struct kvm *kvm, int n) 
		kvm->nvcpus = n + 1;

	spin_unlock(&kvm_lock);



	vcpu->valid = 1;



	return r;



out_free_vcpus:

drivers/kvm/kvm_svm.h

+3 −0
Original line number Diff line number Diff line
@@ -20,7 +20,10 @@ static const u32 host_save_user_msrs[] = { 
#define NR_HOST_SAVE_USER_MSRS ARRAY_SIZE(host_save_user_msrs)

#define NUM_DB_REGS 4



struct kvm_vcpu;



struct vcpu_svm {

	struct kvm_vcpu *vcpu;

	struct vmcb *vmcb;

	unsigned long vmcb_pa;

	struct svm_cpu_data *svm_data;

drivers/kvm/svm.c

+229 −165

File changed.

Preview size limit exceeded, changes collapsed.

drivers/kvm/vmx.c

+158 −91
Original line number Diff line number Diff line
@@ -32,6 +32,37 @@ 
MODULE_AUTHOR("Qumranet");

MODULE_LICENSE("GPL");



struct vmcs {

	u32 revision_id;

	u32 abort;

	char data[0];

};



struct vcpu_vmx {

	struct kvm_vcpu      *vcpu;

	int                   launched;

	struct kvm_msr_entry *guest_msrs;

	struct kvm_msr_entry *host_msrs;

	int                   nmsrs;

	int                   save_nmsrs;

	int                   msr_offset_efer;

#ifdef CONFIG_X86_64

	int                   msr_offset_kernel_gs_base;

#endif

	struct vmcs          *vmcs;

	struct {

		int           loaded;

		u16           fs_sel, gs_sel, ldt_sel;

		int           fs_gs_ldt_reload_needed;

	}host_state;



};



static inline struct vcpu_vmx *to_vmx(struct kvm_vcpu *vcpu)

{

	return (struct vcpu_vmx*)vcpu->_priv;

}



static int init_rmode_tss(struct kvm *kvm);



static DEFINE_PER_CPU(struct vmcs *, vmxarea);
@@ -89,16 +120,33 @@ static const u32 vmx_msr_index[] = { 
};

#define NR_VMX_MSR ARRAY_SIZE(vmx_msr_index)



static inline u64 msr_efer_save_restore_bits(struct vmx_msr_entry msr)

static void load_msrs(struct kvm_msr_entry *e, int n)

{

	int i;



	for (i = 0; i < n; ++i)

		wrmsrl(e[i].index, e[i].data);

}



static void save_msrs(struct kvm_msr_entry *e, int n)

{

	int i;



	for (i = 0; i < n; ++i)

		rdmsrl(e[i].index, e[i].data);

}



static inline u64 msr_efer_save_restore_bits(struct kvm_msr_entry msr)

{

	return (u64)msr.data & EFER_SAVE_RESTORE_BITS;

}



static inline int msr_efer_need_save_restore(struct kvm_vcpu *vcpu)

{

	int efer_offset = vcpu->msr_offset_efer;

	return msr_efer_save_restore_bits(vcpu->host_msrs[efer_offset]) !=

		msr_efer_save_restore_bits(vcpu->guest_msrs[efer_offset]);

	struct vcpu_vmx *vmx = to_vmx(vcpu);

	int efer_offset = vmx->msr_offset_efer;

	return msr_efer_save_restore_bits(vmx->host_msrs[efer_offset]) !=

		msr_efer_save_restore_bits(vmx->guest_msrs[efer_offset]);

}



static inline int is_page_fault(u32 intr_info)
@@ -123,21 +171,23 @@ static inline int is_external_interrupt(u32 intr_info) 


static int __find_msr_index(struct kvm_vcpu *vcpu, u32 msr)

{

	struct vcpu_vmx *vmx = to_vmx(vcpu);

	int i;



	for (i = 0; i < vcpu->nmsrs; ++i)

		if (vcpu->guest_msrs[i].index == msr)

	for (i = 0; i < vmx->nmsrs; ++i)

		if (vmx->guest_msrs[i].index == msr)

			return i;

	return -1;

}



static struct vmx_msr_entry *find_msr_entry(struct kvm_vcpu *vcpu, u32 msr)

static struct kvm_msr_entry *find_msr_entry(struct kvm_vcpu *vcpu, u32 msr)

{

	struct vcpu_vmx *vmx = to_vmx(vcpu);

	int i;



	i = __find_msr_index(vcpu, msr);

	if (i >= 0)

		return &vcpu->guest_msrs[i];

		return &vmx->guest_msrs[i];

	return NULL;

}
@@ -157,11 +207,12 @@ static void vmcs_clear(struct vmcs *vmcs) 
static void __vcpu_clear(void *arg)

{

	struct kvm_vcpu *vcpu = arg;

	struct vcpu_vmx *vmx = to_vmx(vcpu);

	int cpu = raw_smp_processor_id();



	if (vcpu->cpu == cpu)

		vmcs_clear(vcpu->vmcs);

	if (per_cpu(current_vmcs, cpu) == vcpu->vmcs)

		vmcs_clear(vmx->vmcs);

	if (per_cpu(current_vmcs, cpu) == vmx->vmcs)

		per_cpu(current_vmcs, cpu) = NULL;

	rdtscll(vcpu->host_tsc);

}
@@ -172,7 +223,7 @@ static void vcpu_clear(struct kvm_vcpu *vcpu) 
		smp_call_function_single(vcpu->cpu, __vcpu_clear, vcpu, 0, 1);

	else

		__vcpu_clear(vcpu);

	vcpu->launched = 0;

	to_vmx(vcpu)->launched = 0;

}



static unsigned long vmcs_readl(unsigned long field)
@@ -285,80 +336,81 @@ static void reload_tss(void) 
static void load_transition_efer(struct kvm_vcpu *vcpu)

{

	u64 trans_efer;

	int efer_offset = vcpu->msr_offset_efer;

	struct vcpu_vmx *vmx = to_vmx(vcpu);

	int efer_offset = vmx->msr_offset_efer;



	trans_efer = vcpu->host_msrs[efer_offset].data;

	trans_efer = vmx->host_msrs[efer_offset].data;

	trans_efer &= ~EFER_SAVE_RESTORE_BITS;

	trans_efer |= msr_efer_save_restore_bits(

				vcpu->guest_msrs[efer_offset]);

	trans_efer |= msr_efer_save_restore_bits(vmx->guest_msrs[efer_offset]);

	wrmsrl(MSR_EFER, trans_efer);

	vcpu->stat.efer_reload++;

}



static void vmx_save_host_state(struct kvm_vcpu *vcpu)

{

	struct vmx_host_state *hs = &vcpu->vmx_host_state;

	struct vcpu_vmx *vmx = to_vmx(vcpu);



	if (hs->loaded)

	if (vmx->host_state.loaded)

		return;



	hs->loaded = 1;

	vmx->host_state.loaded = 1;

	/*

	 * Set host fs and gs selectors.  Unfortunately, 22.2.3 does not

	 * allow segment selectors with cpl > 0 or ti == 1.

	 */

	hs->ldt_sel = read_ldt();

	hs->fs_gs_ldt_reload_needed = hs->ldt_sel;

	hs->fs_sel = read_fs();

	if (!(hs->fs_sel & 7))

		vmcs_write16(HOST_FS_SELECTOR, hs->fs_sel);

	vmx->host_state.ldt_sel = read_ldt();

	vmx->host_state.fs_gs_ldt_reload_needed = vmx->host_state.ldt_sel;

	vmx->host_state.fs_sel = read_fs();

	if (!(vmx->host_state.fs_sel & 7))

		vmcs_write16(HOST_FS_SELECTOR, vmx->host_state.fs_sel);

	else {

		vmcs_write16(HOST_FS_SELECTOR, 0);

		hs->fs_gs_ldt_reload_needed = 1;

		vmx->host_state.fs_gs_ldt_reload_needed = 1;

	}

	hs->gs_sel = read_gs();

	if (!(hs->gs_sel & 7))

		vmcs_write16(HOST_GS_SELECTOR, hs->gs_sel);

	vmx->host_state.gs_sel = read_gs();

	if (!(vmx->host_state.gs_sel & 7))

		vmcs_write16(HOST_GS_SELECTOR, vmx->host_state.gs_sel);

	else {

		vmcs_write16(HOST_GS_SELECTOR, 0);

		hs->fs_gs_ldt_reload_needed = 1;

		vmx->host_state.fs_gs_ldt_reload_needed = 1;

	}



#ifdef CONFIG_X86_64

	vmcs_writel(HOST_FS_BASE, read_msr(MSR_FS_BASE));

	vmcs_writel(HOST_GS_BASE, read_msr(MSR_GS_BASE));

#else

	vmcs_writel(HOST_FS_BASE, segment_base(hs->fs_sel));

	vmcs_writel(HOST_GS_BASE, segment_base(hs->gs_sel));

	vmcs_writel(HOST_FS_BASE, segment_base(vmx->host_state.fs_sel));

	vmcs_writel(HOST_GS_BASE, segment_base(vmx->host_state.gs_sel));

#endif



#ifdef CONFIG_X86_64

	if (is_long_mode(vcpu)) {

		save_msrs(vcpu->host_msrs + vcpu->msr_offset_kernel_gs_base, 1);

		save_msrs(vmx->host_msrs +

			  vmx->msr_offset_kernel_gs_base, 1);

	}

#endif

	load_msrs(vcpu->guest_msrs, vcpu->save_nmsrs);

	load_msrs(vmx->guest_msrs, vmx->save_nmsrs);

	if (msr_efer_need_save_restore(vcpu))

		load_transition_efer(vcpu);

}



static void vmx_load_host_state(struct kvm_vcpu *vcpu)

{

	struct vmx_host_state *hs = &vcpu->vmx_host_state;

	struct vcpu_vmx *vmx = to_vmx(vcpu);



	if (!hs->loaded)

	if (!vmx->host_state.loaded)

		return;



	hs->loaded = 0;

	if (hs->fs_gs_ldt_reload_needed) {

		load_ldt(hs->ldt_sel);

		load_fs(hs->fs_sel);

	vmx->host_state.loaded = 0;

	if (vmx->host_state.fs_gs_ldt_reload_needed) {

		load_ldt(vmx->host_state.ldt_sel);

		load_fs(vmx->host_state.fs_sel);

		/*

		 * If we have to reload gs, we must take care to

		 * preserve our gs base.

		 */

		local_irq_disable();

		load_gs(hs->gs_sel);

		load_gs(vmx->host_state.gs_sel);

#ifdef CONFIG_X86_64

		wrmsrl(MSR_GS_BASE, vmcs_readl(HOST_GS_BASE));

#endif
@@ -366,10 +418,10 @@ static void vmx_load_host_state(struct kvm_vcpu *vcpu) 


		reload_tss();

	}

	save_msrs(vcpu->guest_msrs, vcpu->save_nmsrs);

	load_msrs(vcpu->host_msrs, vcpu->save_nmsrs);

	save_msrs(vmx->guest_msrs, vmx->save_nmsrs);

	load_msrs(vmx->host_msrs, vmx->save_nmsrs);

	if (msr_efer_need_save_restore(vcpu))

		load_msrs(vcpu->host_msrs + vcpu->msr_offset_efer, 1);

		load_msrs(vmx->host_msrs + vmx->msr_offset_efer, 1);

}



/*
@@ -378,7 +430,8 @@ static void vmx_load_host_state(struct kvm_vcpu *vcpu) 
 */

static void vmx_vcpu_load(struct kvm_vcpu *vcpu)

{

	u64 phys_addr = __pa(vcpu->vmcs);

	struct vcpu_vmx *vmx = to_vmx(vcpu);

	u64 phys_addr = __pa(vmx->vmcs);

	int cpu;

	u64 tsc_this, delta;
@@ -387,16 +440,16 @@ static void vmx_vcpu_load(struct kvm_vcpu *vcpu) 
	if (vcpu->cpu != cpu)

		vcpu_clear(vcpu);



	if (per_cpu(current_vmcs, cpu) != vcpu->vmcs) {

	if (per_cpu(current_vmcs, cpu) != vmx->vmcs) {

		u8 error;



		per_cpu(current_vmcs, cpu) = vcpu->vmcs;

		per_cpu(current_vmcs, cpu) = vmx->vmcs;

		asm volatile (ASM_VMX_VMPTRLD_RAX "; setna %0"

			      : "=g"(error) : "a"(&phys_addr), "m"(phys_addr)

			      : "cc");

		if (error)

			printk(KERN_ERR "kvm: vmptrld %p/%llx fail\n",

			       vcpu->vmcs, phys_addr);

			       vmx->vmcs, phys_addr);

	}



	if (vcpu->cpu != cpu) {
@@ -503,13 +556,15 @@ static void vmx_inject_gp(struct kvm_vcpu *vcpu, unsigned error_code) 
 */

void move_msr_up(struct kvm_vcpu *vcpu, int from, int to)

{

	struct vmx_msr_entry tmp;

	tmp = vcpu->guest_msrs[to];

	vcpu->guest_msrs[to] = vcpu->guest_msrs[from];

	vcpu->guest_msrs[from] = tmp;

	tmp = vcpu->host_msrs[to];

	vcpu->host_msrs[to] = vcpu->host_msrs[from];

	vcpu->host_msrs[from] = tmp;

	struct vcpu_vmx *vmx = to_vmx(vcpu);

	struct kvm_msr_entry tmp;



	tmp = vmx->guest_msrs[to];

	vmx->guest_msrs[to] = vmx->guest_msrs[from];

	vmx->guest_msrs[from] = tmp;

	tmp = vmx->host_msrs[to];

	vmx->host_msrs[to] = vmx->host_msrs[from];

	vmx->host_msrs[from] = tmp;

}



/*
@@ -519,6 +574,7 @@ void move_msr_up(struct kvm_vcpu *vcpu, int from, int to) 
 */

static void setup_msrs(struct kvm_vcpu *vcpu)

{

	struct vcpu_vmx *vmx = to_vmx(vcpu);

	int save_nmsrs;



	save_nmsrs = 0;
@@ -547,13 +603,13 @@ static void setup_msrs(struct kvm_vcpu *vcpu) 
			move_msr_up(vcpu, index, save_nmsrs++);

	}

#endif

	vcpu->save_nmsrs = save_nmsrs;

	vmx->save_nmsrs = save_nmsrs;



#ifdef CONFIG_X86_64

	vcpu->msr_offset_kernel_gs_base =

	vmx->msr_offset_kernel_gs_base =

		__find_msr_index(vcpu, MSR_KERNEL_GS_BASE);

#endif

	vcpu->msr_offset_efer = __find_msr_index(vcpu, MSR_EFER);

	vmx->msr_offset_efer = __find_msr_index(vcpu, MSR_EFER);

}



/*
@@ -589,7 +645,7 @@ static void guest_write_tsc(u64 guest_tsc) 
static int vmx_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata)

{

	u64 data;

	struct vmx_msr_entry *msr;

	struct kvm_msr_entry *msr;



	if (!pdata) {

		printk(KERN_ERR "BUG: get_msr called with NULL pdata\n");
@@ -639,14 +695,15 @@ static int vmx_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata) 
 */

static int vmx_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data)

{

	struct vmx_msr_entry *msr;

	struct vcpu_vmx *vmx = to_vmx(vcpu);

	struct kvm_msr_entry *msr;

	int ret = 0;



	switch (msr_index) {

#ifdef CONFIG_X86_64

	case MSR_EFER:

		ret = kvm_set_msr_common(vcpu, msr_index, data);

		if (vcpu->vmx_host_state.loaded)

		if (vmx->host_state.loaded)

			load_transition_efer(vcpu);

		break;

	case MSR_FS_BASE:
@@ -672,8 +729,8 @@ static int vmx_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data) 
		msr = find_msr_entry(vcpu, msr_index);

		if (msr) {

			msr->data = data;

			if (vcpu->vmx_host_state.loaded)

				load_msrs(vcpu->guest_msrs, vcpu->save_nmsrs);

			if (vmx->host_state.loaded)

				load_msrs(vmx->guest_msrs, vmx->save_nmsrs);

			break;

		}

		ret = kvm_set_msr_common(vcpu, msr_index, data);
@@ -1053,7 +1110,7 @@ static void vmx_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4) 


static void vmx_set_efer(struct kvm_vcpu *vcpu, u64 efer)

{

	struct vmx_msr_entry *msr = find_msr_entry(vcpu, MSR_EFER);

	struct kvm_msr_entry *msr = find_msr_entry(vcpu, MSR_EFER);



	vcpu->shadow_efer = efer;

	if (efer & EFER_LMA) {
@@ -1244,6 +1301,7 @@ static void seg_setup(int seg) 
 */

static int vmx_vcpu_setup(struct kvm_vcpu *vcpu)

{

	struct vcpu_vmx *vmx = to_vmx(vcpu);

	u32 host_sysenter_cs;

	u32 junk;

	unsigned long a;
@@ -1385,18 +1443,18 @@ static int vmx_vcpu_setup(struct kvm_vcpu *vcpu) 
		u32 index = vmx_msr_index[i];

		u32 data_low, data_high;

		u64 data;

		int j = vcpu->nmsrs;

		int j = vmx->nmsrs;



		if (rdmsr_safe(index, &data_low, &data_high) < 0)

			continue;

		if (wrmsr_safe(index, data_low, data_high) < 0)

			continue;

		data = data_low | ((u64)data_high << 32);

		vcpu->host_msrs[j].index = index;

		vcpu->host_msrs[j].reserved = 0;

		vcpu->host_msrs[j].data = data;

		vcpu->guest_msrs[j] = vcpu->host_msrs[j];

		++vcpu->nmsrs;

		vmx->host_msrs[j].index = index;

		vmx->host_msrs[j].reserved = 0;

		vmx->host_msrs[j].data = data;

		vmx->guest_msrs[j] = vmx->host_msrs[j];

		++vmx->nmsrs;

	}



	setup_msrs(vcpu);
@@ -1999,6 +2057,7 @@ static void vmx_flush_tlb(struct kvm_vcpu *vcpu) 


static int vmx_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)

{

	struct vcpu_vmx *vmx = to_vmx(vcpu);

	u8 fail;

	int r;
@@ -2123,7 +2182,7 @@ again: 
#endif

		"setbe %0 \n\t"

	      : "=q" (fail)

	      : "r"(vcpu->launched), "d"((unsigned long)HOST_RSP),

	      : "r"(vmx->launched), "d"((unsigned long)HOST_RSP),

		"c"(vcpu),

		[rax]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_RAX])),

		[rbx]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_RBX])),
@@ -2167,7 +2226,7 @@ again: 
	if (unlikely(prof_on == KVM_PROFILING))

		profile_hit(KVM_PROFILING, (void *)vmcs_readl(GUEST_RIP));



	vcpu->launched = 1;

	vmx->launched = 1;

	r = kvm_handle_exit(kvm_run, vcpu);

	if (r > 0) {

		/* Give scheduler a change to reschedule. */
@@ -2232,10 +2291,12 @@ static void vmx_inject_page_fault(struct kvm_vcpu *vcpu, 


static void vmx_free_vmcs(struct kvm_vcpu *vcpu)

{

	if (vcpu->vmcs) {

	struct vcpu_vmx *vmx = to_vmx(vcpu);



	if (vmx->vmcs) {

		on_each_cpu(__vcpu_clear, vcpu, 0, 1);

		free_vmcs(vcpu->vmcs);

		vcpu->vmcs = NULL;

		free_vmcs(vmx->vmcs);

		vmx->vmcs = NULL;

	}

}
@@ -2246,33 +2307,39 @@ static void vmx_free_vcpu(struct kvm_vcpu *vcpu) 


static int vmx_create_vcpu(struct kvm_vcpu *vcpu)

{

	struct vmcs *vmcs;

	struct vcpu_vmx *vmx;



	vcpu->guest_msrs = kmalloc(PAGE_SIZE, GFP_KERNEL);

	if (!vcpu->guest_msrs)

	vmx = kzalloc(sizeof(*vmx), GFP_KERNEL);

	if (!vmx)

		return -ENOMEM;



	vcpu->host_msrs = kmalloc(PAGE_SIZE, GFP_KERNEL);

	if (!vcpu->host_msrs)

		goto out_free_guest_msrs;

	vmx->guest_msrs = kmalloc(PAGE_SIZE, GFP_KERNEL);

	if (!vmx->guest_msrs)

		goto out_free;



	vmcs = alloc_vmcs();

	if (!vmcs)

		goto out_free_msrs;

	vmx->host_msrs = kmalloc(PAGE_SIZE, GFP_KERNEL);

	if (!vmx->host_msrs)

		goto out_free;



	vmcs_clear(vmcs);

	vcpu->vmcs = vmcs;

	vcpu->launched = 0;

	vmx->vmcs = alloc_vmcs();

	if (!vmx->vmcs)

		goto out_free;



	vmcs_clear(vmx->vmcs);



	vmx->vcpu   = vcpu;

	vcpu->_priv = vmx;



	return 0;



out_free_msrs:

	kfree(vcpu->host_msrs);

	vcpu->host_msrs = NULL;

out_free:

	if (vmx->host_msrs)

		kfree(vmx->host_msrs);



	if (vmx->guest_msrs)

		kfree(vmx->guest_msrs);



out_free_guest_msrs:

	kfree(vcpu->guest_msrs);

	vcpu->guest_msrs = NULL;

	kfree(vmx);



	return -ENOMEM;

}

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