lkml.org 
[lkml]   [2007]   [Sep]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 025/104] KVM: Dynamically allocate vcpus
Date
From: Rusty Russell <rusty@rustcorp.com.au>

This patch converts the vcpus array in "struct kvm" to a pointer
array, and changes the "vcpu_create" and "vcpu_setup" hooks into one
"vcpu_create" call which does the allocation and initialization of the
vcpu (calling back into the kvm_vcpu_init core helper).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Avi Kivity <avi@qumranet.com>
---
drivers/kvm/kvm.h | 12 ++--
drivers/kvm/kvm_main.c | 198 +++++++++++++++++++++++++-----------------------
drivers/kvm/kvm_svm.h | 2 +-
drivers/kvm/svm.c | 177 +++++++++++++++++++++----------------------
drivers/kvm/vmx.c | 65 ++++++++++------
5 files changed, 236 insertions(+), 218 deletions(-)
diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h
index 954a140..e92c84b 100644
--- a/drivers/kvm/kvm.h
+++ b/drivers/kvm/kvm.h
@@ -300,10 +300,8 @@ 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;
- void *_priv;
struct mutex mutex;
int cpu;
u64 host_tsc;
@@ -404,8 +402,7 @@ struct kvm {
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];
+ struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
int memory_config_version;
int busy;
unsigned long rmap_overflow;
@@ -428,7 +425,8 @@ struct kvm_arch_ops {
int (*hardware_setup)(void); /* __init */
void (*hardware_unsetup)(void); /* __exit */

- int (*vcpu_create)(struct kvm_vcpu *vcpu);
+ /* 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);
@@ -470,7 +468,6 @@ struct kvm_arch_ops {
void (*inject_gp)(struct kvm_vcpu *vcpu, unsigned err_code);

int (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
- int (*vcpu_setup)(struct kvm_vcpu *vcpu);
void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
void (*patch_hypercall)(struct kvm_vcpu *vcpu,
unsigned char *hypercall_addr);
@@ -481,6 +478,9 @@ extern struct kvm_arch_ops *kvm_arch_ops;
#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)

+int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
+void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
+
int kvm_init_arch(struct kvm_arch_ops *ops, struct module *module);
void kvm_exit_arch(void);

diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
index bf8b8f0..69d9ab4 100644
--- a/drivers/kvm/kvm_main.c
+++ b/drivers/kvm/kvm_main.c
@@ -266,8 +266,10 @@ void kvm_flush_remote_tlbs(struct kvm *kvm)
atomic_set(&completed, 0);
cpus_clear(cpus);
needed = 0;
- for (i = 0; i < kvm->nvcpus; ++i) {
- vcpu = &kvm->vcpus[i];
+ for (i = 0; i < KVM_MAX_VCPUS; ++i) {
+ vcpu = kvm->vcpus[i];
+ if (!vcpu)
+ continue;
if (test_and_set_bit(KVM_TLB_FLUSH, &vcpu->requests))
continue;
cpu = vcpu->cpu;
@@ -291,10 +293,61 @@ void kvm_flush_remote_tlbs(struct kvm *kvm)
}
}

+int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id)
+{
+ struct page *page;
+ int r;
+
+ mutex_init(&vcpu->mutex);
+ vcpu->cpu = -1;
+ vcpu->mmu.root_hpa = INVALID_PAGE;
+ vcpu->kvm = kvm;
+ vcpu->vcpu_id = id;
+
+ page = alloc_page(GFP_KERNEL | __GFP_ZERO);
+ if (!page) {
+ r = -ENOMEM;
+ goto fail;
+ }
+ vcpu->run = page_address(page);
+
+ page = alloc_page(GFP_KERNEL | __GFP_ZERO);
+ if (!page) {
+ r = -ENOMEM;
+ goto fail_free_run;
+ }
+ vcpu->pio_data = page_address(page);
+
+ vcpu->host_fx_image = (char*)ALIGN((hva_t)vcpu->fx_buf,
+ FX_IMAGE_ALIGN);
+ vcpu->guest_fx_image = vcpu->host_fx_image + FX_IMAGE_SIZE;
+
+ r = kvm_mmu_create(vcpu);
+ if (r < 0)
+ goto fail_free_pio_data;
+
+ return 0;
+
+fail_free_pio_data:
+ free_page((unsigned long)vcpu->pio_data);
+fail_free_run:
+ free_page((unsigned long)vcpu->run);
+fail:
+ return -ENOMEM;
+}
+EXPORT_SYMBOL_GPL(kvm_vcpu_init);
+
+void kvm_vcpu_uninit(struct kvm_vcpu *vcpu)
+{
+ kvm_mmu_destroy(vcpu);
+ free_page((unsigned long)vcpu->pio_data);
+ free_page((unsigned long)vcpu->run);
+}
+EXPORT_SYMBOL_GPL(kvm_vcpu_uninit);
+
static struct kvm *kvm_create_vm(void)
{
struct kvm *kvm = kzalloc(sizeof(struct kvm), GFP_KERNEL);
- int i;

if (!kvm)
return ERR_PTR(-ENOMEM);
@@ -303,14 +356,6 @@ static struct kvm *kvm_create_vm(void)
spin_lock_init(&kvm->lock);
INIT_LIST_HEAD(&kvm->active_mmu_pages);
kvm_io_bus_init(&kvm->mmio_bus);
- for (i = 0; i < KVM_MAX_VCPUS; ++i) {
- struct kvm_vcpu *vcpu = &kvm->vcpus[i];
-
- mutex_init(&vcpu->mutex);
- vcpu->cpu = -1;
- vcpu->kvm = kvm;
- vcpu->mmu.root_hpa = INVALID_PAGE;
- }
spin_lock(&kvm_lock);
list_add(&kvm->vm_list, &vm_list);
spin_unlock(&kvm_lock);
@@ -367,30 +412,11 @@ static void free_pio_guest_pages(struct kvm_vcpu *vcpu)

static void kvm_unload_vcpu_mmu(struct kvm_vcpu *vcpu)
{
- if (!vcpu->valid)
- return;
-
vcpu_load(vcpu);
kvm_mmu_unload(vcpu);
vcpu_put(vcpu);
}

-static void kvm_free_vcpu(struct kvm_vcpu *vcpu)
-{
- if (!vcpu->valid)
- return;
-
- vcpu_load(vcpu);
- kvm_mmu_destroy(vcpu);
- vcpu_put(vcpu);
- kvm_arch_ops->vcpu_free(vcpu);
- free_page((unsigned long)vcpu->run);
- vcpu->run = NULL;
- free_page((unsigned long)vcpu->pio_data);
- vcpu->pio_data = NULL;
- free_pio_guest_pages(vcpu);
-}
-
static void kvm_free_vcpus(struct kvm *kvm)
{
unsigned int i;
@@ -399,9 +425,15 @@ static void kvm_free_vcpus(struct kvm *kvm)
* Unpin any mmu pages first.
*/
for (i = 0; i < KVM_MAX_VCPUS; ++i)
- kvm_unload_vcpu_mmu(&kvm->vcpus[i]);
- for (i = 0; i < KVM_MAX_VCPUS; ++i)
- kvm_free_vcpu(&kvm->vcpus[i]);
+ if (kvm->vcpus[i])
+ kvm_unload_vcpu_mmu(kvm->vcpus[i]);
+ for (i = 0; i < KVM_MAX_VCPUS; ++i) {
+ if (kvm->vcpus[i]) {
+ kvm_arch_ops->vcpu_free(kvm->vcpus[i]);
+ kvm->vcpus[i] = NULL;
+ }
+ }
+
}

static int kvm_dev_release(struct inode *inode, struct file *filp)
@@ -2372,77 +2404,47 @@ static int kvm_vm_ioctl_create_vcpu(struct kvm *kvm, int n)
{
int r;
struct kvm_vcpu *vcpu;
- struct page *page;

- r = -EINVAL;
if (!valid_vcpu(n))
- goto out;
-
- vcpu = &kvm->vcpus[n];
- vcpu->vcpu_id = n;
-
- mutex_lock(&vcpu->mutex);
-
- if (vcpu->valid) {
- mutex_unlock(&vcpu->mutex);
- return -EEXIST;
- }
-
- page = alloc_page(GFP_KERNEL | __GFP_ZERO);
- r = -ENOMEM;
- if (!page)
- goto out_unlock;
- vcpu->run = page_address(page);
-
- page = alloc_page(GFP_KERNEL | __GFP_ZERO);
- r = -ENOMEM;
- if (!page)
- goto out_free_run;
- vcpu->pio_data = page_address(page);
-
- vcpu->host_fx_image = (char*)ALIGN((hva_t)vcpu->fx_buf,
- FX_IMAGE_ALIGN);
- vcpu->guest_fx_image = vcpu->host_fx_image + FX_IMAGE_SIZE;
- vcpu->cr0 = 0x10;
-
- r = kvm_arch_ops->vcpu_create(vcpu);
- if (r < 0)
- goto out_free_vcpus;
+ return -EINVAL;

- r = kvm_mmu_create(vcpu);
- if (r < 0)
- goto out_free_vcpus;
+ vcpu = kvm_arch_ops->vcpu_create(kvm, n);
+ if (IS_ERR(vcpu))
+ return PTR_ERR(vcpu);

- kvm_arch_ops->vcpu_load(vcpu);
+ vcpu_load(vcpu);
r = kvm_mmu_setup(vcpu);
- if (r >= 0)
- r = kvm_arch_ops->vcpu_setup(vcpu);
vcpu_put(vcpu);
-
if (r < 0)
- goto out_free_vcpus;
+ goto free_vcpu;

+ spin_lock(&kvm->lock);
+ if (kvm->vcpus[n]) {
+ r = -EEXIST;
+ spin_unlock(&kvm->lock);
+ goto mmu_unload;
+ }
+ kvm->vcpus[n] = vcpu;
+ spin_unlock(&kvm->lock);
+
+ /* Now it's all set up, let userspace reach it */
r = create_vcpu_fd(vcpu);
if (r < 0)
- goto out_free_vcpus;
-
- spin_lock(&kvm_lock);
- if (n >= kvm->nvcpus)
- kvm->nvcpus = n + 1;
- spin_unlock(&kvm_lock);
+ goto unlink;
+ return r;

- vcpu->valid = 1;
+unlink:
+ spin_lock(&kvm->lock);
+ kvm->vcpus[n] = NULL;
+ spin_unlock(&kvm->lock);

- return r;
+mmu_unload:
+ vcpu_load(vcpu);
+ kvm_mmu_unload(vcpu);
+ vcpu_put(vcpu);

-out_free_vcpus:
- kvm_free_vcpu(vcpu);
-out_free_run:
- free_page((unsigned long)vcpu->run);
- vcpu->run = NULL;
-out_unlock:
- mutex_unlock(&vcpu->mutex);
-out:
+free_vcpu:
+ kvm_arch_ops->vcpu_free(vcpu);
return r;
}

@@ -2935,9 +2937,12 @@ static void decache_vcpus_on_cpu(int cpu)
int i;

spin_lock(&kvm_lock);
- list_for_each_entry(vm, &vm_list, vm_list)
+ list_for_each_entry(vm, &vm_list, vm_list) {
+ spin_lock(&vm->lock);
for (i = 0; i < KVM_MAX_VCPUS; ++i) {
- vcpu = &vm->vcpus[i];
+ vcpu = vm->vcpus[i];
+ if (!vcpu)
+ continue;
/*
* If the vcpu is locked, then it is running on some
* other cpu and therefore it is not cached on the
@@ -2954,6 +2959,8 @@ static void decache_vcpus_on_cpu(int cpu)
mutex_unlock(&vcpu->mutex);
}
}
+ spin_unlock(&vm->lock);
+ }
spin_unlock(&kvm_lock);
}

@@ -3078,8 +3085,9 @@ static u64 stat_get(void *_offset)
spin_lock(&kvm_lock);
list_for_each_entry(kvm, &vm_list, vm_list)
for (i = 0; i < KVM_MAX_VCPUS; ++i) {
- vcpu = &kvm->vcpus[i];
- total += *(u32 *)((void *)vcpu + offset);
+ vcpu = kvm->vcpus[i];
+ if (vcpu)
+ total += *(u32 *)((void *)vcpu + offset);
}
spin_unlock(&kvm_lock);
return total;
diff --git a/drivers/kvm/kvm_svm.h b/drivers/kvm/kvm_svm.h
index 82e5d77..a0e415d 100644
--- a/drivers/kvm/kvm_svm.h
+++ b/drivers/kvm/kvm_svm.h
@@ -23,7 +23,7 @@ static const u32 host_save_user_msrs[] = {
struct kvm_vcpu;

struct vcpu_svm {
- struct kvm_vcpu *vcpu;
+ struct kvm_vcpu vcpu;
struct vmcb *vmcb;
unsigned long vmcb_pa;
struct svm_cpu_data *svm_data;
diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c
index 3248187..0feec85 100644
--- a/drivers/kvm/svm.c
+++ b/drivers/kvm/svm.c
@@ -51,7 +51,7 @@ MODULE_LICENSE("GPL");

static inline struct vcpu_svm *to_svm(struct kvm_vcpu *vcpu)
{
- return (struct vcpu_svm*)vcpu->_priv;
+ return container_of(vcpu, struct vcpu_svm, vcpu);
}

unsigned long iopm_base;
@@ -466,11 +466,6 @@ static void init_sys_seg(struct vmcb_seg *seg, uint32_t type)
seg->base = 0;
}

-static int svm_vcpu_setup(struct kvm_vcpu *vcpu)
-{
- return 0;
-}
-
static void init_vmcb(struct vmcb *vmcb)
{
struct vmcb_control_area *control = &vmcb->control;
@@ -576,19 +571,27 @@ static void init_vmcb(struct vmcb *vmcb)
/* rdx = ?? */
}

-static int svm_create_vcpu(struct kvm_vcpu *vcpu)
+static struct kvm_vcpu *svm_create_vcpu(struct kvm *kvm, unsigned int id)
{
struct vcpu_svm *svm;
struct page *page;
- int r;
+ int err;

- r = -ENOMEM;
svm = kzalloc(sizeof *svm, GFP_KERNEL);
- if (!svm)
- goto out1;
+ if (!svm) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ err = kvm_vcpu_init(&svm->vcpu, kvm, id);
+ if (err)
+ goto free_svm;
+
page = alloc_page(GFP_KERNEL);
- if (!page)
- goto out2;
+ if (!page) {
+ err = -ENOMEM;
+ goto uninit;
+ }

svm->vmcb = page_address(page);
clear_page(svm->vmcb);
@@ -597,33 +600,29 @@ static int svm_create_vcpu(struct kvm_vcpu *vcpu)
memset(svm->db_regs, 0, sizeof(svm->db_regs));
init_vmcb(svm->vmcb);

- svm->vcpu = vcpu;
- vcpu->_priv = svm;
+ fx_init(&svm->vcpu);
+ svm->vcpu.fpu_active = 1;
+ svm->vcpu.apic_base = 0xfee00000 | MSR_IA32_APICBASE_ENABLE;
+ if (svm->vcpu.vcpu_id == 0)
+ svm->vcpu.apic_base |= MSR_IA32_APICBASE_BSP;

- fx_init(vcpu);
- vcpu->fpu_active = 1;
- vcpu->apic_base = 0xfee00000 | MSR_IA32_APICBASE_ENABLE;
- if (vcpu->vcpu_id == 0)
- vcpu->apic_base |= MSR_IA32_APICBASE_BSP;
+ return &svm->vcpu;

- return 0;
-
-out2:
+uninit:
+ kvm_vcpu_uninit(&svm->vcpu);
+free_svm:
kfree(svm);
-out1:
- return r;
+out:
+ return ERR_PTR(err);
}

static void svm_free_vcpu(struct kvm_vcpu *vcpu)
{
struct vcpu_svm *svm = to_svm(vcpu);

- if (!svm)
- return;
- if (svm->vmcb)
- __free_page(pfn_to_page(svm->vmcb_pa >> PAGE_SHIFT));
+ __free_page(pfn_to_page(svm->vmcb_pa >> PAGE_SHIFT));
+ kvm_vcpu_uninit(vcpu);
kfree(svm);
- vcpu->_priv = NULL;
}

static void svm_vcpu_load(struct kvm_vcpu *vcpu)
@@ -1591,34 +1590,33 @@ again:
#endif

#ifdef CONFIG_X86_64
- "mov %c[rbx](%[vcpu]), %%rbx \n\t"
- "mov %c[rcx](%[vcpu]), %%rcx \n\t"
- "mov %c[rdx](%[vcpu]), %%rdx \n\t"
- "mov %c[rsi](%[vcpu]), %%rsi \n\t"
- "mov %c[rdi](%[vcpu]), %%rdi \n\t"
- "mov %c[rbp](%[vcpu]), %%rbp \n\t"
- "mov %c[r8](%[vcpu]), %%r8 \n\t"
- "mov %c[r9](%[vcpu]), %%r9 \n\t"
- "mov %c[r10](%[vcpu]), %%r10 \n\t"
- "mov %c[r11](%[vcpu]), %%r11 \n\t"
- "mov %c[r12](%[vcpu]), %%r12 \n\t"
- "mov %c[r13](%[vcpu]), %%r13 \n\t"
- "mov %c[r14](%[vcpu]), %%r14 \n\t"
- "mov %c[r15](%[vcpu]), %%r15 \n\t"
+ "mov %c[rbx](%[svm]), %%rbx \n\t"
+ "mov %c[rcx](%[svm]), %%rcx \n\t"
+ "mov %c[rdx](%[svm]), %%rdx \n\t"
+ "mov %c[rsi](%[svm]), %%rsi \n\t"
+ "mov %c[rdi](%[svm]), %%rdi \n\t"
+ "mov %c[rbp](%[svm]), %%rbp \n\t"
+ "mov %c[r8](%[svm]), %%r8 \n\t"
+ "mov %c[r9](%[svm]), %%r9 \n\t"
+ "mov %c[r10](%[svm]), %%r10 \n\t"
+ "mov %c[r11](%[svm]), %%r11 \n\t"
+ "mov %c[r12](%[svm]), %%r12 \n\t"
+ "mov %c[r13](%[svm]), %%r13 \n\t"
+ "mov %c[r14](%[svm]), %%r14 \n\t"
+ "mov %c[r15](%[svm]), %%r15 \n\t"
#else
- "mov %c[rbx](%[vcpu]), %%ebx \n\t"
- "mov %c[rcx](%[vcpu]), %%ecx \n\t"
- "mov %c[rdx](%[vcpu]), %%edx \n\t"
- "mov %c[rsi](%[vcpu]), %%esi \n\t"
- "mov %c[rdi](%[vcpu]), %%edi \n\t"
- "mov %c[rbp](%[vcpu]), %%ebp \n\t"
+ "mov %c[rbx](%[svm]), %%ebx \n\t"
+ "mov %c[rcx](%[svm]), %%ecx \n\t"
+ "mov %c[rdx](%[svm]), %%edx \n\t"
+ "mov %c[rsi](%[svm]), %%esi \n\t"
+ "mov %c[rdi](%[svm]), %%edi \n\t"
+ "mov %c[rbp](%[svm]), %%ebp \n\t"
#endif

#ifdef CONFIG_X86_64
/* Enter guest mode */
"push %%rax \n\t"
- "mov %c[svm](%[vcpu]), %%rax \n\t"
- "mov %c[vmcb](%%rax), %%rax \n\t"
+ "mov %c[vmcb](%[svm]), %%rax \n\t"
SVM_VMLOAD "\n\t"
SVM_VMRUN "\n\t"
SVM_VMSAVE "\n\t"
@@ -1626,8 +1624,7 @@ again:
#else
/* Enter guest mode */
"push %%eax \n\t"
- "mov %c[svm](%[vcpu]), %%eax \n\t"
- "mov %c[vmcb](%%eax), %%eax \n\t"
+ "mov %c[vmcb](%[svm]), %%eax \n\t"
SVM_VMLOAD "\n\t"
SVM_VMRUN "\n\t"
SVM_VMSAVE "\n\t"
@@ -1636,55 +1633,54 @@ again:

/* Save guest registers, load host registers */
#ifdef CONFIG_X86_64
- "mov %%rbx, %c[rbx](%[vcpu]) \n\t"
- "mov %%rcx, %c[rcx](%[vcpu]) \n\t"
- "mov %%rdx, %c[rdx](%[vcpu]) \n\t"
- "mov %%rsi, %c[rsi](%[vcpu]) \n\t"
- "mov %%rdi, %c[rdi](%[vcpu]) \n\t"
- "mov %%rbp, %c[rbp](%[vcpu]) \n\t"
- "mov %%r8, %c[r8](%[vcpu]) \n\t"
- "mov %%r9, %c[r9](%[vcpu]) \n\t"
- "mov %%r10, %c[r10](%[vcpu]) \n\t"
- "mov %%r11, %c[r11](%[vcpu]) \n\t"
- "mov %%r12, %c[r12](%[vcpu]) \n\t"
- "mov %%r13, %c[r13](%[vcpu]) \n\t"
- "mov %%r14, %c[r14](%[vcpu]) \n\t"
- "mov %%r15, %c[r15](%[vcpu]) \n\t"
+ "mov %%rbx, %c[rbx](%[svm]) \n\t"
+ "mov %%rcx, %c[rcx](%[svm]) \n\t"
+ "mov %%rdx, %c[rdx](%[svm]) \n\t"
+ "mov %%rsi, %c[rsi](%[svm]) \n\t"
+ "mov %%rdi, %c[rdi](%[svm]) \n\t"
+ "mov %%rbp, %c[rbp](%[svm]) \n\t"
+ "mov %%r8, %c[r8](%[svm]) \n\t"
+ "mov %%r9, %c[r9](%[svm]) \n\t"
+ "mov %%r10, %c[r10](%[svm]) \n\t"
+ "mov %%r11, %c[r11](%[svm]) \n\t"
+ "mov %%r12, %c[r12](%[svm]) \n\t"
+ "mov %%r13, %c[r13](%[svm]) \n\t"
+ "mov %%r14, %c[r14](%[svm]) \n\t"
+ "mov %%r15, %c[r15](%[svm]) \n\t"

"pop %%r15; pop %%r14; pop %%r13; pop %%r12;"
"pop %%r11; pop %%r10; pop %%r9; pop %%r8;"
"pop %%rbp; pop %%rdi; pop %%rsi;"
"pop %%rdx; pop %%rcx; pop %%rbx; \n\t"
#else
- "mov %%ebx, %c[rbx](%[vcpu]) \n\t"
- "mov %%ecx, %c[rcx](%[vcpu]) \n\t"
- "mov %%edx, %c[rdx](%[vcpu]) \n\t"
- "mov %%esi, %c[rsi](%[vcpu]) \n\t"
- "mov %%edi, %c[rdi](%[vcpu]) \n\t"
- "mov %%ebp, %c[rbp](%[vcpu]) \n\t"
+ "mov %%ebx, %c[rbx](%[svm]) \n\t"
+ "mov %%ecx, %c[rcx](%[svm]) \n\t"
+ "mov %%edx, %c[rdx](%[svm]) \n\t"
+ "mov %%esi, %c[rsi](%[svm]) \n\t"
+ "mov %%edi, %c[rdi](%[svm]) \n\t"
+ "mov %%ebp, %c[rbp](%[svm]) \n\t"

"pop %%ebp; pop %%edi; pop %%esi;"
"pop %%edx; pop %%ecx; pop %%ebx; \n\t"
#endif
:
- : [vcpu]"a"(vcpu),
- [svm]"i"(offsetof(struct kvm_vcpu, _priv)),
+ : [svm]"a"(svm),
[vmcb]"i"(offsetof(struct vcpu_svm, vmcb_pa)),
- [rbx]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_RBX])),
- [rcx]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_RCX])),
- [rdx]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_RDX])),
- [rsi]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_RSI])),
- [rdi]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_RDI])),
- [rbp]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_RBP]))
+ [rbx]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_RBX])),
+ [rcx]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_RCX])),
+ [rdx]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_RDX])),
+ [rsi]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_RSI])),
+ [rdi]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_RDI])),
+ [rbp]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_RBP]))
#ifdef CONFIG_X86_64
- ,[r8 ]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R8 ])),
- [r9 ]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R9 ])),
- [r10]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R10])),
- [r11]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R11])),
- [r12]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R12])),
- [r13]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R13])),
- [r14]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R14])),
- [r15]"i"(offsetof(struct kvm_vcpu, regs[VCPU_REGS_R15]))
+ ,[r8 ]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_R8])),
+ [r9 ]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_R9 ])),
+ [r10]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_R10])),
+ [r11]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_R11])),
+ [r12]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_R12])),
+ [r13]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_R13])),
+ [r14]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_R14])),
+ [r15]"i"(offsetof(struct vcpu_svm,vcpu.regs[VCPU_REGS_R15]))
#endif
: "cc", "memory" );

@@ -1865,7 +1861,6 @@ static struct kvm_arch_ops svm_arch_ops = {

.run = svm_vcpu_run,
.skip_emulated_instruction = skip_emulated_instruction,
- .vcpu_setup = svm_vcpu_setup,
.patch_hypercall = svm_patch_hypercall,
};

diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c
index 96837d6..df57878 100644
--- a/drivers/kvm/vmx.c
+++ b/drivers/kvm/vmx.c
@@ -39,7 +39,7 @@ struct vmcs {
};

struct vcpu_vmx {
- struct kvm_vcpu *vcpu;
+ struct kvm_vcpu vcpu;
int launched;
struct kvm_msr_entry *guest_msrs;
struct kvm_msr_entry *host_msrs;
@@ -60,7 +60,7 @@ struct vcpu_vmx {

static inline struct vcpu_vmx *to_vmx(struct kvm_vcpu *vcpu)
{
- return (struct vcpu_vmx*)vcpu->_priv;
+ return container_of(vcpu, struct vcpu_vmx, vcpu);
}

static int init_rmode_tss(struct kvm *kvm);
@@ -2302,46 +2302,62 @@ static void vmx_free_vmcs(struct kvm_vcpu *vcpu)

static void vmx_free_vcpu(struct kvm_vcpu *vcpu)
{
+ struct vcpu_vmx *vmx = to_vmx(vcpu);
+
vmx_free_vmcs(vcpu);
+ kfree(vmx->host_msrs);
+ kfree(vmx->guest_msrs);
+ kvm_vcpu_uninit(vcpu);
+ kfree(vmx);
}

-static int vmx_create_vcpu(struct kvm_vcpu *vcpu)
+static struct kvm_vcpu *vmx_create_vcpu(struct kvm *kvm, unsigned int id)
{
- struct vcpu_vmx *vmx;
+ int err;
+ struct vcpu_vmx *vmx = kzalloc(sizeof(*vmx), GFP_KERNEL);

- vmx = kzalloc(sizeof(*vmx), GFP_KERNEL);
if (!vmx)
- return -ENOMEM;
+ return ERR_PTR(-ENOMEM);
+
+ err = kvm_vcpu_init(&vmx->vcpu, kvm, id);
+ if (err)
+ goto free_vcpu;

vmx->guest_msrs = kmalloc(PAGE_SIZE, GFP_KERNEL);
- if (!vmx->guest_msrs)
- goto out_free;
+ if (!vmx->guest_msrs) {
+ err = -ENOMEM;
+ goto uninit_vcpu;
+ }

vmx->host_msrs = kmalloc(PAGE_SIZE, GFP_KERNEL);
if (!vmx->host_msrs)
- goto out_free;
+ goto free_guest_msrs;

vmx->vmcs = alloc_vmcs();
if (!vmx->vmcs)
- goto out_free;
+ goto free_msrs;

vmcs_clear(vmx->vmcs);

- vmx->vcpu = vcpu;
- vcpu->_priv = vmx;
-
- return 0;
-
-out_free:
- if (vmx->host_msrs)
- kfree(vmx->host_msrs);
-
- if (vmx->guest_msrs)
- kfree(vmx->guest_msrs);
-
+ vmx_vcpu_load(&vmx->vcpu);
+ err = vmx_vcpu_setup(&vmx->vcpu);
+ vmx_vcpu_put(&vmx->vcpu);
+ if (err)
+ goto free_vmcs;
+
+ return &vmx->vcpu;
+
+free_vmcs:
+ free_vmcs(vmx->vmcs);
+free_msrs:
+ kfree(vmx->host_msrs);
+free_guest_msrs:
+ kfree(vmx->guest_msrs);
+uninit_vcpu:
+ kvm_vcpu_uninit(&vmx->vcpu);
+free_vcpu:
kfree(vmx);
-
- return -ENOMEM;
+ return ERR_PTR(err);
}

static struct kvm_arch_ops vmx_arch_ops = {
@@ -2389,7 +2405,6 @@ static struct kvm_arch_ops vmx_arch_ops = {

.run = vmx_vcpu_run,
.skip_emulated_instruction = skip_emulated_instruction,
- .vcpu_setup = vmx_vcpu_setup,
.patch_hypercall = vmx_patch_hypercall,
};

--
1.5.3
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-09-17 10:45    [from the cache]
©2003-2011 Jasper Spaans