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Commit 58f800d5 authored by Paolo Bonzini's avatar Paolo Bonzini
Browse files

Merge branch 'kvm-master' into HEAD 

This merge brings in a couple important SMM fixes, which makes it
easier to test latest KVM with unrestricted_guest=0 and to test
the in-progress work on SMM support in the firmware.

Conflicts:
	arch/x86/kvm/x86.c
parents 1330a017 73917739

arch/x86/include/asm/kvm_host.h

+2 −4
Original line number Diff line number Diff line
@@ -1251,10 +1251,8 @@ void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err); 


int kvm_is_in_guest(void);



int __x86_set_memory_region(struct kvm *kvm,

			    const struct kvm_userspace_memory_region *mem);

int x86_set_memory_region(struct kvm *kvm,

			  const struct kvm_userspace_memory_region *mem);

int __x86_set_memory_region(struct kvm *kvm, int id, gpa_t gpa, u32 size);

int x86_set_memory_region(struct kvm *kvm, int id, gpa_t gpa, u32 size);

bool kvm_vcpu_is_reset_bsp(struct kvm_vcpu *vcpu);

bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu);

arch/x86/kvm/vmx.c

+6 −20
Original line number Diff line number Diff line
@@ -4227,17 +4227,13 @@ static void seg_setup(int seg) 
static int alloc_apic_access_page(struct kvm *kvm)

{

	struct page *page;

	struct kvm_userspace_memory_region kvm_userspace_mem;

	int r = 0;



	mutex_lock(&kvm->slots_lock);

	if (kvm->arch.apic_access_page_done)

		goto out;

	kvm_userspace_mem.slot = APIC_ACCESS_PAGE_PRIVATE_MEMSLOT;

	kvm_userspace_mem.flags = 0;

	kvm_userspace_mem.guest_phys_addr = APIC_DEFAULT_PHYS_BASE;

	kvm_userspace_mem.memory_size = PAGE_SIZE;

	r = __x86_set_memory_region(kvm, &kvm_userspace_mem);

	r = __x86_set_memory_region(kvm, APIC_ACCESS_PAGE_PRIVATE_MEMSLOT,

				    APIC_DEFAULT_PHYS_BASE, PAGE_SIZE);

	if (r)

		goto out;
@@ -4262,17 +4258,12 @@ static int alloc_identity_pagetable(struct kvm *kvm) 
{

	/* Called with kvm->slots_lock held. */



	struct kvm_userspace_memory_region kvm_userspace_mem;

	int r = 0;



	BUG_ON(kvm->arch.ept_identity_pagetable_done);



	kvm_userspace_mem.slot = IDENTITY_PAGETABLE_PRIVATE_MEMSLOT;

	kvm_userspace_mem.flags = 0;

	kvm_userspace_mem.guest_phys_addr =

		kvm->arch.ept_identity_map_addr;

	kvm_userspace_mem.memory_size = PAGE_SIZE;

	r = __x86_set_memory_region(kvm, &kvm_userspace_mem);

	r = __x86_set_memory_region(kvm, IDENTITY_PAGETABLE_PRIVATE_MEMSLOT,

				    kvm->arch.ept_identity_map_addr, PAGE_SIZE);



	return r;

}
@@ -5089,14 +5080,9 @@ static int vmx_interrupt_allowed(struct kvm_vcpu *vcpu) 
static int vmx_set_tss_addr(struct kvm *kvm, unsigned int addr)

{

	int ret;

	struct kvm_userspace_memory_region tss_mem = {

		.slot = TSS_PRIVATE_MEMSLOT,

		.guest_phys_addr = addr,

		.memory_size = PAGE_SIZE * 3,

		.flags = 0,

	};



	ret = x86_set_memory_region(kvm, &tss_mem);

	ret = x86_set_memory_region(kvm, TSS_PRIVATE_MEMSLOT, addr,

				    PAGE_SIZE * 3);

	if (ret)

		return ret;

	kvm->arch.tss_addr = addr;

arch/x86/kvm/x86.c

+75 −60
Original line number Diff line number Diff line
@@ -6531,6 +6531,12 @@ static inline int vcpu_block(struct kvm *kvm, struct kvm_vcpu *vcpu) 
	return 1;

}



static inline bool kvm_vcpu_running(struct kvm_vcpu *vcpu)

{

	return (vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE &&

		!vcpu->arch.apf.halted);

}



static int vcpu_run(struct kvm_vcpu *vcpu)

{

	int r;
@@ -6539,8 +6545,7 @@ static int vcpu_run(struct kvm_vcpu *vcpu) 
	vcpu->srcu_idx = srcu_read_lock(&kvm->srcu);



	for (;;) {

		if (vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE &&

		    !vcpu->arch.apf.halted) {

		if (kvm_vcpu_running(vcpu)) {

			r = vcpu_enter_guest(vcpu);

		} else {

			r = vcpu_block(kvm, vcpu);
@@ -7556,34 +7561,66 @@ void kvm_arch_sync_events(struct kvm *kvm) 
	kvm_free_pit(kvm);

}



int __x86_set_memory_region(struct kvm *kvm,

			    const struct kvm_userspace_memory_region *mem)

int __x86_set_memory_region(struct kvm *kvm, int id, gpa_t gpa, u32 size)

{

	int i, r;

	u64 hva;

	struct kvm_memslots *slots = kvm_memslots(kvm);

	struct kvm_memory_slot *slot, old;



	/* Called with kvm->slots_lock held.  */

	BUG_ON(mem->slot >= KVM_MEM_SLOTS_NUM);

	if (WARN_ON(id >= KVM_MEM_SLOTS_NUM))

		return -EINVAL;



	slot = id_to_memslot(slots, id);

	if (size) {

		if (WARN_ON(slot->npages))

			return -EEXIST;



		/*

		 * MAP_SHARED to prevent internal slot pages from being moved

		 * by fork()/COW.

		 */

		hva = vm_mmap(NULL, 0, size, PROT_READ | PROT_WRITE,

			      MAP_SHARED | MAP_ANONYMOUS, 0);

		if (IS_ERR((void *)hva))

			return PTR_ERR((void *)hva);

	} else {

		if (!slot->npages)

			return 0;



		hva = 0;

	}



	old = *slot;

	for (i = 0; i < KVM_ADDRESS_SPACE_NUM; i++) {

		struct kvm_userspace_memory_region m = *mem;

		struct kvm_userspace_memory_region m;



		m.slot |= i << 16;

		m.slot = id | (i << 16);

		m.flags = 0;

		m.guest_phys_addr = gpa;

		m.userspace_addr = hva;

		m.memory_size = size;

		r = __kvm_set_memory_region(kvm, &m);

		if (r < 0)

			return r;

	}



	if (!size) {

		r = vm_munmap(old.userspace_addr, old.npages * PAGE_SIZE);

		WARN_ON(r < 0);

	}



	return 0;

}

EXPORT_SYMBOL_GPL(__x86_set_memory_region);



int x86_set_memory_region(struct kvm *kvm,

			  const struct kvm_userspace_memory_region *mem)

int x86_set_memory_region(struct kvm *kvm, int id, gpa_t gpa, u32 size)

{

	int r;



	mutex_lock(&kvm->slots_lock);

	r = __x86_set_memory_region(kvm, mem);

	r = __x86_set_memory_region(kvm, id, gpa, size);

	mutex_unlock(&kvm->slots_lock);



	return r;
@@ -7598,16 +7635,9 @@ void kvm_arch_destroy_vm(struct kvm *kvm) 
		 * unless the the memory map has changed due to process exit

		 * or fd copying.

		 */

		struct kvm_userspace_memory_region mem;

		memset(&mem, 0, sizeof(mem));

		mem.slot = APIC_ACCESS_PAGE_PRIVATE_MEMSLOT;

		x86_set_memory_region(kvm, &mem);



		mem.slot = IDENTITY_PAGETABLE_PRIVATE_MEMSLOT;

		x86_set_memory_region(kvm, &mem);



		mem.slot = TSS_PRIVATE_MEMSLOT;

		x86_set_memory_region(kvm, &mem);

		x86_set_memory_region(kvm, APIC_ACCESS_PAGE_PRIVATE_MEMSLOT, 0, 0);

		x86_set_memory_region(kvm, IDENTITY_PAGETABLE_PRIVATE_MEMSLOT, 0, 0);

		x86_set_memory_region(kvm, TSS_PRIVATE_MEMSLOT, 0, 0);

	}

	kvm_iommu_unmap_guest(kvm);

	kfree(kvm->arch.vpic);
@@ -7710,27 +7740,6 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm, 
				const struct kvm_userspace_memory_region *mem,

				enum kvm_mr_change change)

{

	/*

	 * Only private memory slots need to be mapped here since

	 * KVM_SET_MEMORY_REGION ioctl is no longer supported.

	 */

	if ((memslot->id >= KVM_USER_MEM_SLOTS) && (change == KVM_MR_CREATE)) {

		unsigned long userspace_addr;



		/*

		 * MAP_SHARED to prevent internal slot pages from being moved

		 * by fork()/COW.

		 */

		userspace_addr = vm_mmap(NULL, 0, memslot->npages * PAGE_SIZE,

					 PROT_READ | PROT_WRITE,

					 MAP_SHARED | MAP_ANONYMOUS, 0);



		if (IS_ERR((void *)userspace_addr))

			return PTR_ERR((void *)userspace_addr);



		memslot->userspace_addr = userspace_addr;

	}



	return 0;

}
@@ -7792,17 +7801,6 @@ void kvm_arch_commit_memory_region(struct kvm *kvm, 
{

	int nr_mmu_pages = 0;



	if (change == KVM_MR_DELETE && old->id >= KVM_USER_MEM_SLOTS) {

		int ret;



		ret = vm_munmap(old->userspace_addr,

				old->npages * PAGE_SIZE);

		if (ret < 0)

			printk(KERN_WARNING

			       "kvm_vm_ioctl_set_memory_region: "

			       "failed to munmap memory\n");

	}



	if (!kvm->arch.n_requested_mmu_pages)

		nr_mmu_pages = kvm_mmu_calculate_mmu_pages(kvm);
@@ -7851,19 +7849,36 @@ void kvm_arch_flush_shadow_memslot(struct kvm *kvm, 
	kvm_mmu_invalidate_zap_all_pages(kvm);

}



static inline bool kvm_vcpu_has_events(struct kvm_vcpu *vcpu)

{

	if (!list_empty_careful(&vcpu->async_pf.done))

		return true;



	if (kvm_apic_has_events(vcpu))

		return true;



	if (vcpu->arch.pv.pv_unhalted)

		return true;



	if (atomic_read(&vcpu->arch.nmi_queued))

		return true;



	if (test_bit(KVM_REQ_SMI, &vcpu->requests))

		return true;



	if (kvm_arch_interrupt_allowed(vcpu) &&

	    kvm_cpu_has_interrupt(vcpu))

		return true;



	return false;

}



int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)

{

	if (is_guest_mode(vcpu) && kvm_x86_ops->check_nested_events)

		kvm_x86_ops->check_nested_events(vcpu, false);



	return (vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE &&

		!vcpu->arch.apf.halted)

		|| !list_empty_careful(&vcpu->async_pf.done)

		|| kvm_apic_has_events(vcpu)

		|| vcpu->arch.pv.pv_unhalted

		|| atomic_read(&vcpu->arch.nmi_queued) ||

		(kvm_arch_interrupt_allowed(vcpu) &&

		 kvm_cpu_has_interrupt(vcpu));

	return kvm_vcpu_running(vcpu) || kvm_vcpu_has_events(vcpu);

}



int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)