NAK. I sent you a patch queue yesterday that replaces this patch.
(Unfortunately I didn't copy kvm-devel due to technical error; resending
in a moment.)
--
Hollis Blanchard
IBM Linux Technology Center
On Tue, 2007-11-20 at 10:29 +0800, Zhang, Xiantao wrote:
> From: Zhang xiantao <[EMAIL PROTECTED]>
> Date: Tue, 20 Nov 2007 10:08:19 +0800
> Subject: [PATCH] KVM Portability split: Splitting kvm structure.
> Use kvm_x86 to hold x86 specific kvm fields, in this way
> kvm strcut only contains common fields.
> Signed-off-by: Zhang xiantao <[EMAIL PROTECTED]>
> ---
> drivers/kvm/ioapic.c | 7 +++-
> drivers/kvm/irq.h | 1 +
> drivers/kvm/kvm.h | 33 ---------------------
> drivers/kvm/kvm_main.c | 9 ++++--
> drivers/kvm/mmu.c | 74
> +++++++++++++++++++++++++++++------------------
> drivers/kvm/vmx.c | 18 ++++++++----
> drivers/kvm/x86.c | 33 +++++++++++++--------
> drivers/kvm/x86.h | 50 +++++++++++++++++++++++++++++++-
> 8 files changed, 139 insertions(+), 86 deletions(-)
> diff --git a/drivers/kvm/ioapic.c b/drivers/kvm/ioapic.c
> index cf1d50b..541164d 100644
> --- a/drivers/kvm/ioapic.c
> +++ b/drivers/kvm/ioapic.c
> @@ -276,7 +276,9 @@ static int get_eoi_gsi(struct kvm_ioapic *ioapic,
> int vector)
>
> void kvm_ioapic_update_eoi(struct kvm *kvm, int vector)
> {
> - struct kvm_ioapic *ioapic = kvm->vioapic;
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(kvm);
> +
> + struct kvm_ioapic *ioapic = kvm_x86->vioapic;
> union ioapic_redir_entry *ent;
> int gsi;
>
> @@ -386,11 +388,12 @@ void kvm_ioapic_reset(struct kvm_ioapic *ioapic)
> int kvm_ioapic_init(struct kvm *kvm)
> {
> struct kvm_ioapic *ioapic;
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(kvm);
>
> ioapic = kzalloc(sizeof(struct kvm_ioapic), GFP_KERNEL);
> if (!ioapic)
> return -ENOMEM;
> - kvm->vioapic = ioapic;
> + kvm_x86->vioapic = ioapic;
> kvm_ioapic_reset(ioapic);
> ioapic->dev.read = ioapic_mmio_read;
> ioapic->dev.write = ioapic_mmio_write;
> diff --git a/drivers/kvm/irq.h b/drivers/kvm/irq.h
> index 5ad3cfd..7180481 100644
> --- a/drivers/kvm/irq.h
> +++ b/drivers/kvm/irq.h
> @@ -23,6 +23,7 @@
> #define __IRQ_H
>
> #include "kvm.h"
> +#include "x86.h"
>
> typedef void irq_request_func(void *opaque, int level);
>
> diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h
> index 1901456..445012e 100644
> --- a/drivers/kvm/kvm.h
> +++ b/drivers/kvm/kvm.h
> @@ -309,48 +309,16 @@ struct kvm {
> int nmemslots;
> struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
> KVM_PRIVATE_MEM_SLOTS];
> - /*
> - * Hash table of struct kvm_mmu_page.
> - */
> - struct list_head active_mmu_pages;
> - unsigned int n_free_mmu_pages;
> - unsigned int n_requested_mmu_pages;
> - unsigned int n_alloc_mmu_pages;
> - struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
> struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
> 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 kvm_pic *vpic;
> - struct kvm_ioapic *vioapic;
> int round_robin_prev_vcpu;
> - unsigned int tss_addr;
> - struct page *apic_access_page;
> struct kvm_vm_stat stat;
> };
>
> -static inline struct kvm_pic *pic_irqchip(struct kvm *kvm)
> -{
> - return kvm->vpic;
> -}
> -
> -static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm)
> -{
> - return kvm->vioapic;
> -}
> -
> -static inline int irqchip_in_kernel(struct kvm *kvm)
> -{
> - return pic_irqchip(kvm) != NULL;
> -}
> -
> -struct descriptor_table {
> - u16 limit;
> - unsigned long base;
> -} __attribute__((packed));
> -
> /* The guest did something we don't support. */
> #define pr_unimpl(vcpu, fmt, ...)
> \
> do {
> \
> @@ -493,7 +461,6 @@ static inline int memslot_id(struct kvm *kvm, struct
> kvm_memory_slot *slot)
> return slot - kvm->memslots;
> }
>
> -
> enum kvm_stat_kind {
> KVM_STAT_VM,
> KVM_STAT_VCPU,
> diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
> index bda733a..5d4bb68 100644
> --- a/drivers/kvm/kvm_main.c
> +++ b/drivers/kvm/kvm_main.c
> @@ -233,6 +233,8 @@ int __kvm_set_memory_region(struct kvm *kvm,
> struct kvm_memory_slot *memslot;
> struct kvm_memory_slot old, new;
>
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(kvm);
> +
> r = -EINVAL;
> /* General sanity checks */
> if (mem->memory_size & (PAGE_SIZE - 1))
> @@ -332,18 +334,19 @@ int __kvm_set_memory_region(struct kvm *kvm,
> if (mem->slot >= kvm->nmemslots)
> kvm->nmemslots = mem->slot + 1;
>
> - if (!kvm->n_requested_mmu_pages) {
> + if (!kvm_x86->n_requested_mmu_pages) {
> unsigned int n_pages;
>
> if (npages) {
> n_pages = npages * KVM_PERMILLE_MMU_PAGES /
> 1000;
> - kvm_mmu_change_mmu_pages(kvm,
> kvm->n_alloc_mmu_pages +
> + kvm_mmu_change_mmu_pages(kvm,
> +
> kvm_x86->n_alloc_mmu_pages +
> n_pages);
> } else {
> unsigned int nr_mmu_pages;
>
> n_pages = old.npages * KVM_PERMILLE_MMU_PAGES /
> 1000;
> - nr_mmu_pages = kvm->n_alloc_mmu_pages - n_pages;
> + nr_mmu_pages = kvm_x86->n_alloc_mmu_pages -
> n_pages;
> nr_mmu_pages = max(nr_mmu_pages,
> (unsigned int)
> KVM_MIN_ALLOC_MMU_PAGES);
> kvm_mmu_change_mmu_pages(kvm, nr_mmu_pages);
> diff --git a/drivers/kvm/mmu.c b/drivers/kvm/mmu.c
> index 87d8e70..9d6684a 100644
> --- a/drivers/kvm/mmu.c
> +++ b/drivers/kvm/mmu.c
> @@ -526,12 +526,14 @@ static int is_empty_shadow_page(u64 *spt)
> static void kvm_mmu_free_page(struct kvm *kvm,
> struct kvm_mmu_page *page_head)
> {
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(kvm);
> +
> ASSERT(is_empty_shadow_page(page_head->spt));
> list_del(&page_head->link);
> __free_page(virt_to_page(page_head->spt));
> __free_page(virt_to_page(page_head->gfns));
> kfree(page_head);
> - ++kvm->n_free_mmu_pages;
> + ++kvm_x86->n_free_mmu_pages;
> }
>
> static unsigned kvm_page_table_hashfn(gfn_t gfn)
> @@ -543,8 +545,9 @@ static struct kvm_mmu_page
> *kvm_mmu_alloc_page(struct kvm_vcpu *vcpu,
> u64 *parent_pte)
> {
> struct kvm_mmu_page *page;
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(vcpu->kvm);
>
> - if (!vcpu->kvm->n_free_mmu_pages)
> + if (!kvm_x86->n_free_mmu_pages)
> return NULL;
>
> page = mmu_memory_cache_alloc(&vcpu->mmu_page_header_cache,
> @@ -552,12 +555,12 @@ static struct kvm_mmu_page
> *kvm_mmu_alloc_page(struct kvm_vcpu *vcpu,
> page->spt = mmu_memory_cache_alloc(&vcpu->mmu_page_cache,
> PAGE_SIZE);
> page->gfns = mmu_memory_cache_alloc(&vcpu->mmu_page_cache,
> PAGE_SIZE);
> set_page_private(virt_to_page(page->spt), (unsigned long)page);
> - list_add(&page->link, &vcpu->kvm->active_mmu_pages);
> + list_add(&page->link, &kvm_x86->active_mmu_pages);
> ASSERT(is_empty_shadow_page(page->spt));
> page->slot_bitmap = 0;
> page->multimapped = 0;
> page->parent_pte = parent_pte;
> - --vcpu->kvm->n_free_mmu_pages;
> + --kvm_x86->n_free_mmu_pages;
> return page;
> }
>
> @@ -643,10 +646,12 @@ static struct kvm_mmu_page
> *kvm_mmu_lookup_page(struct kvm *kvm,
> struct hlist_head *bucket;
> struct kvm_mmu_page *page;
> struct hlist_node *node;
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(kvm);
> +
>
> pgprintk("%s: looking for gfn %lx\n", __FUNCTION__, gfn);
> index = kvm_page_table_hashfn(gfn) % KVM_NUM_MMU_PAGES;
> - bucket = &kvm->mmu_page_hash[index];
> + bucket = &kvm_x86->mmu_page_hash[index];
> hlist_for_each_entry(page, node, bucket, hash_link)
> if (page->gfn == gfn && !page->role.metaphysical) {
> pgprintk("%s: found role %x\n",
> @@ -670,6 +675,8 @@ static struct kvm_mmu_page *kvm_mmu_get_page(struct
> kvm_vcpu *vcpu,
> struct hlist_head *bucket;
> struct kvm_mmu_page *page;
> struct hlist_node *node;
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(vcpu->kvm);
> +
>
> role.word = 0;
> role.glevels = vcpu->mmu.root_level;
> @@ -684,7 +691,7 @@ static struct kvm_mmu_page *kvm_mmu_get_page(struct
> kvm_vcpu *vcpu,
> pgprintk("%s: looking gfn %lx role %x\n", __FUNCTION__,
> gfn, role.word);
> index = kvm_page_table_hashfn(gfn) % KVM_NUM_MMU_PAGES;
> - bucket = &vcpu->kvm->mmu_page_hash[index];
> + bucket = &kvm_x86->mmu_page_hash[index];
> hlist_for_each_entry(page, node, bucket, hash_link)
> if (page->gfn == gfn && page->role.word == role.word) {
> mmu_page_add_parent_pte(vcpu, page, parent_pte);
> @@ -754,6 +761,7 @@ static void kvm_mmu_zap_page(struct kvm *kvm,
> struct kvm_mmu_page *page)
> {
> u64 *parent_pte;
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(kvm);
>
> ++kvm->stat.mmu_shadow_zapped;
> while (page->multimapped || page->parent_pte) {
> @@ -775,7 +783,7 @@ static void kvm_mmu_zap_page(struct kvm *kvm,
> hlist_del(&page->hash_link);
> kvm_mmu_free_page(kvm, page);
> } else
> - list_move(&page->link, &kvm->active_mmu_pages);
> + list_move(&page->link, &kvm_x86->active_mmu_pages);
> kvm_mmu_reset_last_pte_updated(kvm);
> }
>
> @@ -790,27 +798,28 @@ void kvm_mmu_change_mmu_pages(struct kvm *kvm,
> unsigned int kvm_nr_mmu_pages)
> * number of actived pages , we must to free some mmu pages
> before we
> * change the value
> */
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(kvm);
>
> - if ((kvm->n_alloc_mmu_pages - kvm->n_free_mmu_pages) >
> + if ((kvm_x86->n_alloc_mmu_pages - kvm_x86->n_free_mmu_pages) >
> kvm_nr_mmu_pages) {
> - int n_used_mmu_pages = kvm->n_alloc_mmu_pages
> - - kvm->n_free_mmu_pages;
> + int n_used_mmu_pages = kvm_x86->n_alloc_mmu_pages
> + - kvm_x86->n_free_mmu_pages;
>
> while (n_used_mmu_pages > kvm_nr_mmu_pages) {
> struct kvm_mmu_page *page;
>
> - page = container_of(kvm->active_mmu_pages.prev,
> + page =
> container_of(kvm_x86->active_mmu_pages.prev,
> struct kvm_mmu_page, link);
> kvm_mmu_zap_page(kvm, page);
> n_used_mmu_pages--;
> }
> - kvm->n_free_mmu_pages = 0;
> + kvm_x86->n_free_mmu_pages = 0;
> }
> else
> - kvm->n_free_mmu_pages += kvm_nr_mmu_pages
> - - kvm->n_alloc_mmu_pages;
> + kvm_x86->n_free_mmu_pages += kvm_nr_mmu_pages
> + - kvm_x86->n_alloc_mmu_pages;
>
> - kvm->n_alloc_mmu_pages = kvm_nr_mmu_pages;
> + kvm_x86->n_alloc_mmu_pages = kvm_nr_mmu_pages;
> }
>
> static int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn)
> @@ -820,11 +829,12 @@ static int kvm_mmu_unprotect_page(struct kvm *kvm,
> gfn_t gfn)
> struct kvm_mmu_page *page;
> struct hlist_node *node, *n;
> int r;
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(kvm);
>
> pgprintk("%s: looking for gfn %lx\n", __FUNCTION__, gfn);
> r = 0;
> index = kvm_page_table_hashfn(gfn) % KVM_NUM_MMU_PAGES;
> - bucket = &kvm->mmu_page_hash[index];
> + bucket = &kvm_x86->mmu_page_hash[index];
> hlist_for_each_entry_safe(page, node, n, bucket, hash_link)
> if (page->gfn == gfn && !page->role.metaphysical) {
> pgprintk("%s: gfn %lx role %x\n", __FUNCTION__,
> gfn,
> @@ -1265,6 +1275,7 @@ void kvm_mmu_pte_write(struct kvm_vcpu *vcpu,
> gpa_t gpa,
> int level;
> int flooded = 0;
> int npte;
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(vcpu->kvm);
>
> pgprintk("%s: gpa %llx bytes %d\n", __FUNCTION__, gpa, bytes);
> ++vcpu->kvm->stat.mmu_pte_write;
> @@ -1280,7 +1291,7 @@ void kvm_mmu_pte_write(struct kvm_vcpu *vcpu,
> gpa_t gpa,
> vcpu->last_pte_updated = NULL;
> }
> index = kvm_page_table_hashfn(gfn) % KVM_NUM_MMU_PAGES;
> - bucket = &vcpu->kvm->mmu_page_hash[index];
> + bucket = &kvm_x86->mmu_page_hash[index];
> hlist_for_each_entry_safe(page, node, n, bucket, hash_link) {
> if (page->gfn != gfn || page->role.metaphysical)
> continue;
> @@ -1344,10 +1355,12 @@ int kvm_mmu_unprotect_page_virt(struct kvm_vcpu
> *vcpu, gva_t gva)
>
> void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu)
> {
> - while (vcpu->kvm->n_free_mmu_pages < KVM_REFILL_PAGES) {
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(vcpu->kvm);
> +
> + while (kvm_x86->n_free_mmu_pages < KVM_REFILL_PAGES) {
> struct kvm_mmu_page *page;
>
> - page = container_of(vcpu->kvm->active_mmu_pages.prev,
> + page = container_of(kvm_x86->active_mmu_pages.prev,
> struct kvm_mmu_page, link);
> kvm_mmu_zap_page(vcpu->kvm, page);
> ++vcpu->kvm->stat.mmu_recycled;
> @@ -1397,9 +1410,10 @@ EXPORT_SYMBOL_GPL(kvm_mmu_page_fault);
> static void free_mmu_pages(struct kvm_vcpu *vcpu)
> {
> struct kvm_mmu_page *page;
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(vcpu->kvm);
>
> - while (!list_empty(&vcpu->kvm->active_mmu_pages)) {
> - page = container_of(vcpu->kvm->active_mmu_pages.next,
> + while (!list_empty(&kvm_x86->active_mmu_pages)) {
> + page = container_of(kvm_x86->active_mmu_pages.next,
> struct kvm_mmu_page, link);
> kvm_mmu_zap_page(vcpu->kvm, page);
> }
> @@ -1410,13 +1424,14 @@ static int alloc_mmu_pages(struct kvm_vcpu
> *vcpu)
> {
> struct page *page;
> int i;
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(vcpu->kvm);
>
> ASSERT(vcpu);
>
> - if (vcpu->kvm->n_requested_mmu_pages)
> - vcpu->kvm->n_free_mmu_pages =
> vcpu->kvm->n_requested_mmu_pages;
> + if (kvm_x86->n_requested_mmu_pages)
> + kvm_x86->n_free_mmu_pages =
> kvm_x86->n_requested_mmu_pages;
> else
> - vcpu->kvm->n_free_mmu_pages =
> vcpu->kvm->n_alloc_mmu_pages;
> + kvm_x86->n_free_mmu_pages = kvm_x86->n_alloc_mmu_pages;
> /*
> * When emulating 32-bit mode, cr3 is only 32 bits even on
> x86_64.
> * Therefore we need to allocate shadow page tables in the first
> @@ -1464,8 +1479,9 @@ void kvm_mmu_destroy(struct kvm_vcpu *vcpu)
> void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot)
> {
> struct kvm_mmu_page *page;
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(kvm);
>
> - list_for_each_entry(page, &kvm->active_mmu_pages, link) {
> + list_for_each_entry(page, &kvm_x86->active_mmu_pages, link) {
> int i;
> u64 *pt;
>
> @@ -1483,8 +1499,9 @@ void kvm_mmu_slot_remove_write_access(struct kvm
> *kvm, int slot)
> void kvm_mmu_zap_all(struct kvm *kvm)
> {
> struct kvm_mmu_page *page, *node;
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(kvm);
>
> - list_for_each_entry_safe(page, node, &kvm->active_mmu_pages,
> link)
> + list_for_each_entry_safe(page, node, &kvm_x86->active_mmu_pages,
> link)
> kvm_mmu_zap_page(kvm, page);
>
> kvm_flush_remote_tlbs(kvm);
> @@ -1637,7 +1654,7 @@ static int count_writable_mappings(struct kvm_vcpu
> *vcpu)
> struct kvm_mmu_page *page;
> int i;
>
> - list_for_each_entry(page, &vcpu->kvm->active_mmu_pages, link) {
> + list_for_each_entry(page, &kvm_x86->active_mmu_pages, link) {
> u64 *pt = page->spt;
>
> if (page->role.level != PT_PAGE_TABLE_LEVEL)
> @@ -1672,8 +1689,9 @@ static void audit_write_protection(struct kvm_vcpu
> *vcpu)
> struct kvm_memory_slot *slot;
> unsigned long *rmapp;
> gfn_t gfn;
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(kvm);
>
> - list_for_each_entry(page, &vcpu->kvm->active_mmu_pages, link) {
> + list_for_each_entry(page, &kvm_x86->active_mmu_pages, link) {
> if (page->role.metaphysical)
> continue;
>
> diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c
> index 4ad60c9..d5df045 100644
> --- a/drivers/kvm/vmx.c
> +++ b/drivers/kvm/vmx.c
> @@ -1141,12 +1141,15 @@ static void enter_pmode(struct kvm_vcpu *vcpu)
>
> static gva_t rmode_tss_base(struct kvm *kvm)
> {
> - if (!kvm->tss_addr) {
> +
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(kvm);
> +
> + if (!kvm_x86->tss_addr) {
> gfn_t base_gfn = kvm->memslots[0].base_gfn +
> kvm->memslots[0].npages - 3;
> return base_gfn << PAGE_SHIFT;
> }
> - return kvm->tss_addr;
> + return kvm_x86->tss_addr;
> }
>
> static void fix_rmode_seg(int seg, struct kvm_save_segment *save)
> @@ -1467,10 +1470,11 @@ static void seg_setup(int seg)
> static int alloc_apic_access_page(struct kvm *kvm)
> {
> struct kvm_userspace_memory_region kvm_userspace_mem;
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(kvm);
> int r = 0;
>
> mutex_lock(&kvm->lock);
> - if (kvm->apic_access_page)
> + if (kvm_x86->apic_access_page)
> goto out;
> kvm_userspace_mem.slot = APIC_ACCESS_PAGE_PRIVATE_MEMSLOT;
> kvm_userspace_mem.flags = 0;
> @@ -1479,7 +1483,7 @@ static int alloc_apic_access_page(struct kvm *kvm)
> r = __kvm_set_memory_region(kvm, &kvm_userspace_mem, 0);
> if (r)
> goto out;
> - kvm->apic_access_page = gfn_to_page(kvm, 0xfee00);
> + kvm_x86->apic_access_page = gfn_to_page(kvm, 0xfee00);
> out:
> mutex_unlock(&kvm->lock);
> return r;
> @@ -1602,6 +1606,7 @@ static int vmx_vcpu_setup(struct vcpu_vmx *vmx)
> static int vmx_vcpu_reset(struct kvm_vcpu *vcpu)
> {
> struct vcpu_vmx *vmx = to_vmx(vcpu);
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(vcpu->kvm);
> u64 msr;
> int ret;
>
> @@ -1694,7 +1699,7 @@ static int vmx_vcpu_reset(struct kvm_vcpu *vcpu)
>
> if (vm_need_virtualize_apic_accesses(vmx->vcpu.kvm))
> vmcs_write64(APIC_ACCESS_ADDR,
> -
> page_to_phys(vmx->vcpu.kvm->apic_access_page));
> + page_to_phys(kvm_x86->apic_access_page));
>
> vmx->vcpu.cr0 = 0x60000010;
> vmx_set_cr0(&vmx->vcpu, vmx->vcpu.cr0); /* enter rmode */
> @@ -1775,11 +1780,12 @@ static int vmx_set_tss_addr(struct kvm *kvm,
> unsigned int addr)
> .memory_size = PAGE_SIZE * 3,
> .flags = 0,
> };
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(kvm);
>
> ret = kvm_set_memory_region(kvm, &tss_mem, 0);
> if (ret)
> return ret;
> - kvm->tss_addr = addr;
> + kvm_x86->tss_addr = addr;
> return 0;
> }
>
> diff --git a/drivers/kvm/x86.c b/drivers/kvm/x86.c
> index 40871b5..0ba82b9 100644
> --- a/drivers/kvm/x86.c
> +++ b/drivers/kvm/x86.c
> @@ -815,13 +815,15 @@ static int kvm_vm_ioctl_set_tss_addr(struct kvm
> *kvm, unsigned long addr)
> static int kvm_vm_ioctl_set_nr_mmu_pages(struct kvm *kvm,
> u32 kvm_nr_mmu_pages)
> {
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(kvm);
> +
> if (kvm_nr_mmu_pages < KVM_MIN_ALLOC_MMU_PAGES)
> return -EINVAL;
>
> mutex_lock(&kvm->lock);
>
> kvm_mmu_change_mmu_pages(kvm, kvm_nr_mmu_pages);
> - kvm->n_requested_mmu_pages = kvm_nr_mmu_pages;
> + kvm_x86->n_requested_mmu_pages = kvm_nr_mmu_pages;
>
> mutex_unlock(&kvm->lock);
> return 0;
> @@ -829,7 +831,9 @@ static int kvm_vm_ioctl_set_nr_mmu_pages(struct kvm
> *kvm,
>
> static int kvm_vm_ioctl_get_nr_mmu_pages(struct kvm *kvm)
> {
> - return kvm->n_alloc_mmu_pages;
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(kvm);
> +
> + return kvm_x86->n_alloc_mmu_pages;
> }
>
> /*
> @@ -974,6 +978,7 @@ long kvm_arch_vm_ioctl(struct file *filp,
> struct kvm *kvm = filp->private_data;
> void __user *argp = (void __user *)arg;
> int r = -EINVAL;
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(kvm);
>
> switch (ioctl) {
> case KVM_SET_TSS_ADDR:
> @@ -1018,12 +1023,12 @@ long kvm_arch_vm_ioctl(struct file *filp,
> }
> case KVM_CREATE_IRQCHIP:
> r = -ENOMEM;
> - kvm->vpic = kvm_create_pic(kvm);
> - if (kvm->vpic) {
> + kvm_x86->vpic = kvm_create_pic(kvm);
> + if (kvm_x86->vpic) {
> r = kvm_ioapic_init(kvm);
> if (r) {
> - kfree(kvm->vpic);
> - kvm->vpic = NULL;
> + kfree(kvm_x86->vpic);
> + kvm_x86->vpic = NULL;
> goto out;
> }
> } else
> @@ -1041,7 +1046,7 @@ long kvm_arch_vm_ioctl(struct file *filp,
> kvm_pic_set_irq(pic_irqchip(kvm),
> irq_event.irq,
> irq_event.level);
> - kvm_ioapic_set_irq(kvm->vioapic,
> + kvm_ioapic_set_irq(kvm_x86->vioapic,
> irq_event.irq,
> irq_event.level);
> mutex_unlock(&kvm->lock);
> @@ -2603,14 +2608,14 @@ void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
>
> struct kvm *kvm_arch_create_vm(void)
> {
> - struct kvm *kvm = kzalloc(sizeof(struct kvm), GFP_KERNEL);
> + struct kvm_x86 *kvm_x86 = kzalloc(sizeof(struct kvm_x86),
> GFP_KERNEL);
>
> - if (!kvm)
> + if (!kvm_x86)
> return ERR_PTR(-ENOMEM);
>
> - INIT_LIST_HEAD(&kvm->active_mmu_pages);
> + INIT_LIST_HEAD(&kvm_x86->active_mmu_pages);
>
> - return kvm;
> + return &kvm_x86->kvm;
> }
>
> static void kvm_unload_vcpu_mmu(struct kvm_vcpu *vcpu)
> @@ -2641,8 +2646,10 @@ static void kvm_free_vcpus(struct kvm *kvm)
>
> void kvm_arch_destroy_vm(struct kvm *kvm)
> {
> - kfree(kvm->vpic);
> - kfree(kvm->vioapic);
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(kvm);
> +
> + kfree(kvm_x86->vpic);
> + kfree(kvm_x86->vioapic);
> kvm_free_vcpus(kvm);
> kvm_free_physmem(kvm);
> kfree(kvm);
> diff --git a/drivers/kvm/x86.h b/drivers/kvm/x86.h
> index 90b791b..1a6f8fe 100644
> --- a/drivers/kvm/x86.h
> +++ b/drivers/kvm/x86.h
> @@ -156,6 +156,52 @@ struct kvm_vcpu {
> struct x86_emulate_ctxt emulate_ctxt;
> };
>
> +struct kvm_x86 {
> + struct kvm kvm;
> + /*
> + * Hash table of struct kvm_mmu_page.
> + */
> + struct list_head active_mmu_pages;
> + unsigned int n_free_mmu_pages;
> + unsigned int n_requested_mmu_pages;
> + unsigned int n_alloc_mmu_pages;
> + struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
> + struct kvm_pic *vpic;
> + struct kvm_ioapic *vioapic;
> + unsigned int tss_addr;
> + struct page *apic_access_page;
> +};
> +
> +static struct kvm_x86 *to_kvm_x86(struct kvm *kvm)
> +{
> + return container_of(kvm, struct kvm_x86, kvm);
> +}
> +
> +static inline struct kvm_pic *pic_irqchip(struct kvm *kvm)
> +{
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(kvm);
> +
> + return kvm_x86->vpic;
> +}
> +
> +static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm)
> +{
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(kvm);
> +
> + return kvm_x86->vioapic;
> +}
> +
> +static inline int irqchip_in_kernel(struct kvm *kvm)
> +{
> + return pic_irqchip(kvm) != NULL;
> +}
> +
> +struct descriptor_table {
> + u16 limit;
> + unsigned long base;
> +} __attribute__((packed));
> +
> +
> struct kvm_x86_ops {
> int (*cpu_has_kvm_support)(void); /* __init */
> int (*disabled_by_bios)(void); /* __init */
> @@ -313,7 +359,9 @@ int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t
> gva, u32 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))
> + struct kvm_x86 *kvm_x86 = to_kvm_x86(vcpu->kvm);
> +
> + if (unlikely(kvm_x86->n_free_mmu_pages <
> KVM_MIN_FREE_MMU_PAGES))
> __kvm_mmu_free_some_pages(vcpu);
> }
>
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