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-rw-r--r--arch/arm/include/asm/kvm_emulate.h5
-rw-r--r--arch/arm/include/asm/kvm_host.h2
-rw-r--r--arch/arm/include/asm/kvm_mmu.h6
-rw-r--r--arch/arm/kvm/arm.c78
-rw-r--r--arch/arm/kvm/guest.c26
-rw-r--r--arch/arm/kvm/mmio.c15
-rw-r--r--arch/arm/kvm/mmu.c99
-rw-r--r--arch/arm/kvm/psci.c18
-rw-r--r--arch/arm64/include/asm/kvm_emulate.h5
-rw-r--r--arch/arm64/include/asm/kvm_host.h3
-rw-r--r--arch/arm64/include/asm/kvm_mmu.h6
-rw-r--r--arch/arm64/kvm/guest.c26
-rw-r--r--arch/x86/kvm/mmu.c6
13 files changed, 214 insertions, 81 deletions
diff --git a/arch/arm/include/asm/kvm_emulate.h b/arch/arm/include/asm/kvm_emulate.h
index b9db269c6e61..66ce17655bb9 100644
--- a/arch/arm/include/asm/kvm_emulate.h
+++ b/arch/arm/include/asm/kvm_emulate.h
@@ -33,6 +33,11 @@ void kvm_inject_undefined(struct kvm_vcpu *vcpu);
void kvm_inject_dabt(struct kvm_vcpu *vcpu, unsigned long addr);
void kvm_inject_pabt(struct kvm_vcpu *vcpu, unsigned long addr);
+static inline void vcpu_reset_hcr(struct kvm_vcpu *vcpu)
+{
+ vcpu->arch.hcr = HCR_GUEST_MASK;
+}
+
static inline bool vcpu_mode_is_32bit(struct kvm_vcpu *vcpu)
{
return 1;
diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h
index 53036e21756b..254e0650e48b 100644
--- a/arch/arm/include/asm/kvm_host.h
+++ b/arch/arm/include/asm/kvm_host.h
@@ -150,8 +150,6 @@ struct kvm_vcpu_stat {
u32 halt_wakeup;
};
-int kvm_vcpu_set_target(struct kvm_vcpu *vcpu,
- const struct kvm_vcpu_init *init);
int kvm_vcpu_preferred_target(struct kvm_vcpu_init *init);
unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu);
int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices);
diff --git a/arch/arm/include/asm/kvm_mmu.h b/arch/arm/include/asm/kvm_mmu.h
index acb0d5712716..63e0ecc04901 100644
--- a/arch/arm/include/asm/kvm_mmu.h
+++ b/arch/arm/include/asm/kvm_mmu.h
@@ -52,6 +52,7 @@ int create_hyp_io_mappings(void *from, void *to, phys_addr_t);
void free_boot_hyp_pgd(void);
void free_hyp_pgds(void);
+void stage2_unmap_vm(struct kvm *kvm);
int kvm_alloc_stage2_pgd(struct kvm *kvm);
void kvm_free_stage2_pgd(struct kvm *kvm);
int kvm_phys_addr_ioremap(struct kvm *kvm, phys_addr_t guest_ipa,
@@ -161,9 +162,10 @@ static inline bool vcpu_has_cache_enabled(struct kvm_vcpu *vcpu)
}
static inline void coherent_cache_guest_page(struct kvm_vcpu *vcpu, hva_t hva,
- unsigned long size)
+ unsigned long size,
+ bool ipa_uncached)
{
- if (!vcpu_has_cache_enabled(vcpu))
+ if (!vcpu_has_cache_enabled(vcpu) || ipa_uncached)
kvm_flush_dcache_to_poc((void *)hva, size);
/*
diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
index 9e193c8a959e..2d6d91001062 100644
--- a/arch/arm/kvm/arm.c
+++ b/arch/arm/kvm/arm.c
@@ -213,6 +213,11 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
int err;
struct kvm_vcpu *vcpu;
+ if (irqchip_in_kernel(kvm) && vgic_initialized(kvm)) {
+ err = -EBUSY;
+ goto out;
+ }
+
vcpu = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL);
if (!vcpu) {
err = -ENOMEM;
@@ -263,6 +268,7 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
{
/* Force users to call KVM_ARM_VCPU_INIT */
vcpu->arch.target = -1;
+ bitmap_zero(vcpu->arch.features, KVM_VCPU_MAX_FEATURES);
/* Set up the timer */
kvm_timer_vcpu_init(vcpu);
@@ -419,6 +425,7 @@ static void update_vttbr(struct kvm *kvm)
static int kvm_vcpu_first_run_init(struct kvm_vcpu *vcpu)
{
+ struct kvm *kvm = vcpu->kvm;
int ret;
if (likely(vcpu->arch.has_run_once))
@@ -427,15 +434,23 @@ static int kvm_vcpu_first_run_init(struct kvm_vcpu *vcpu)
vcpu->arch.has_run_once = true;
/*
- * Initialize the VGIC before running a vcpu the first time on
- * this VM.
+ * Map the VGIC hardware resources before running a vcpu the first
+ * time on this VM.
*/
- if (unlikely(!vgic_initialized(vcpu->kvm))) {
- ret = kvm_vgic_init(vcpu->kvm);
+ if (unlikely(!vgic_ready(kvm))) {
+ ret = kvm_vgic_map_resources(kvm);
if (ret)
return ret;
}
+ /*
+ * Enable the arch timers only if we have an in-kernel VGIC
+ * and it has been properly initialized, since we cannot handle
+ * interrupts from the virtual timer with a userspace gic.
+ */
+ if (irqchip_in_kernel(kvm) && vgic_initialized(kvm))
+ kvm_timer_enable(kvm);
+
return 0;
}
@@ -649,6 +664,48 @@ int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level,
return -EINVAL;
}
+static int kvm_vcpu_set_target(struct kvm_vcpu *vcpu,
+ const struct kvm_vcpu_init *init)
+{
+ unsigned int i;
+ int phys_target = kvm_target_cpu();
+
+ if (init->target != phys_target)
+ return -EINVAL;
+
+ /*
+ * Secondary and subsequent calls to KVM_ARM_VCPU_INIT must
+ * use the same target.
+ */
+ if (vcpu->arch.target != -1 && vcpu->arch.target != init->target)
+ return -EINVAL;
+
+ /* -ENOENT for unknown features, -EINVAL for invalid combinations. */
+ for (i = 0; i < sizeof(init->features) * 8; i++) {
+ bool set = (init->features[i / 32] & (1 << (i % 32)));
+
+ if (set && i >= KVM_VCPU_MAX_FEATURES)
+ return -ENOENT;
+
+ /*
+ * Secondary and subsequent calls to KVM_ARM_VCPU_INIT must
+ * use the same feature set.
+ */
+ if (vcpu->arch.target != -1 && i < KVM_VCPU_MAX_FEATURES &&
+ test_bit(i, vcpu->arch.features) != set)
+ return -EINVAL;
+
+ if (set)
+ set_bit(i, vcpu->arch.features);
+ }
+
+ vcpu->arch.target = phys_target;
+
+ /* Now we know what it is, we can reset it. */
+ return kvm_reset_vcpu(vcpu);
+}
+
+
static int kvm_arch_vcpu_ioctl_vcpu_init(struct kvm_vcpu *vcpu,
struct kvm_vcpu_init *init)
{
@@ -659,10 +716,21 @@ static int kvm_arch_vcpu_ioctl_vcpu_init(struct kvm_vcpu *vcpu,
return ret;
/*
+ * Ensure a rebooted VM will fault in RAM pages and detect if the
+ * guest MMU is turned off and flush the caches as needed.
+ */
+ if (vcpu->arch.has_run_once)
+ stage2_unmap_vm(vcpu->kvm);
+
+ vcpu_reset_hcr(vcpu);
+
+ /*
* Handle the "start in power-off" case by marking the VCPU as paused.
*/
- if (__test_and_clear_bit(KVM_ARM_VCPU_POWER_OFF, vcpu->arch.features))
+ if (test_bit(KVM_ARM_VCPU_POWER_OFF, vcpu->arch.features))
vcpu->arch.pause = true;
+ else
+ vcpu->arch.pause = false;
return 0;
}
diff --git a/arch/arm/kvm/guest.c b/arch/arm/kvm/guest.c
index cc0b78769bd8..384bab67c462 100644
--- a/arch/arm/kvm/guest.c
+++ b/arch/arm/kvm/guest.c
@@ -38,7 +38,6 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
{
- vcpu->arch.hcr = HCR_GUEST_MASK;
return 0;
}
@@ -274,31 +273,6 @@ int __attribute_const__ kvm_target_cpu(void)
}
}
-int kvm_vcpu_set_target(struct kvm_vcpu *vcpu,
- const struct kvm_vcpu_init *init)
-{
- unsigned int i;
-
- /* We can only cope with guest==host and only on A15/A7 (for now). */
- if (init->target != kvm_target_cpu())
- return -EINVAL;
-
- vcpu->arch.target = init->target;
- bitmap_zero(vcpu->arch.features, KVM_VCPU_MAX_FEATURES);
-
- /* -ENOENT for unknown features, -EINVAL for invalid combinations. */
- for (i = 0; i < sizeof(init->features) * 8; i++) {
- if (test_bit(i, (void *)init->features)) {
- if (i >= KVM_VCPU_MAX_FEATURES)
- return -ENOENT;
- set_bit(i, vcpu->arch.features);
- }
- }
-
- /* Now we know what it is, we can reset it. */
- return kvm_reset_vcpu(vcpu);
-}
-
int kvm_vcpu_preferred_target(struct kvm_vcpu_init *init)
{
int target = kvm_target_cpu();
diff --git a/arch/arm/kvm/mmio.c b/arch/arm/kvm/mmio.c
index 4cb5a93182e9..5d3bfc0eb3f0 100644
--- a/arch/arm/kvm/mmio.c
+++ b/arch/arm/kvm/mmio.c
@@ -187,15 +187,18 @@ int io_mem_abort(struct kvm_vcpu *vcpu, struct kvm_run *run,
}
rt = vcpu->arch.mmio_decode.rt;
- data = vcpu_data_guest_to_host(vcpu, *vcpu_reg(vcpu, rt), mmio.len);
- trace_kvm_mmio((mmio.is_write) ? KVM_TRACE_MMIO_WRITE :
- KVM_TRACE_MMIO_READ_UNSATISFIED,
- mmio.len, fault_ipa,
- (mmio.is_write) ? data : 0);
+ if (mmio.is_write) {
+ data = vcpu_data_guest_to_host(vcpu, *vcpu_reg(vcpu, rt),
+ mmio.len);
- if (mmio.is_write)
+ trace_kvm_mmio(KVM_TRACE_MMIO_WRITE, mmio.len,
+ fault_ipa, data);
mmio_write_buf(mmio.data, mmio.len, data);
+ } else {
+ trace_kvm_mmio(KVM_TRACE_MMIO_READ_UNSATISFIED, mmio.len,
+ fault_ipa, 0);
+ }
if (vgic_handle_mmio(vcpu, run, &mmio))
return 1;
diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c
index 57a403a5c22b..3756dd3e85c2 100644
--- a/arch/arm/kvm/mmu.c
+++ b/arch/arm/kvm/mmu.c
@@ -611,6 +611,71 @@ static void unmap_stage2_range(struct kvm *kvm, phys_addr_t start, u64 size)
unmap_range(kvm, kvm->arch.pgd, start, size);
}
+static void stage2_unmap_memslot(struct kvm *kvm,
+ struct kvm_memory_slot *memslot)
+{
+ hva_t hva = memslot->userspace_addr;
+ phys_addr_t addr = memslot->base_gfn << PAGE_SHIFT;
+ phys_addr_t size = PAGE_SIZE * memslot->npages;
+ hva_t reg_end = hva + size;
+
+ /*
+ * A memory region could potentially cover multiple VMAs, and any holes
+ * between them, so iterate over all of them to find out if we should
+ * unmap any of them.
+ *
+ * +--------------------------------------------+
+ * +---------------+----------------+ +----------------+
+ * | : VMA 1 | VMA 2 | | VMA 3 : |
+ * +---------------+----------------+ +----------------+
+ * | memory region |
+ * +--------------------------------------------+
+ */
+ do {
+ struct vm_area_struct *vma = find_vma(current->mm, hva);
+ hva_t vm_start, vm_end;
+
+ if (!vma || vma->vm_start >= reg_end)
+ break;
+
+ /*
+ * Take the intersection of this VMA with the memory region
+ */
+ vm_start = max(hva, vma->vm_start);
+ vm_end = min(reg_end, vma->vm_end);
+
+ if (!(vma->vm_flags & VM_PFNMAP)) {
+ gpa_t gpa = addr + (vm_start - memslot->userspace_addr);
+ unmap_stage2_range(kvm, gpa, vm_end - vm_start);
+ }
+ hva = vm_end;
+ } while (hva < reg_end);
+}
+
+/**
+ * stage2_unmap_vm - Unmap Stage-2 RAM mappings
+ * @kvm: The struct kvm pointer
+ *
+ * Go through the memregions and unmap any reguler RAM
+ * backing memory already mapped to the VM.
+ */
+void stage2_unmap_vm(struct kvm *kvm)
+{
+ struct kvm_memslots *slots;
+ struct kvm_memory_slot *memslot;
+ int idx;
+
+ idx = srcu_read_lock(&kvm->srcu);
+ spin_lock(&kvm->mmu_lock);
+
+ slots = kvm_memslots(kvm);
+ kvm_for_each_memslot(memslot, slots)
+ stage2_unmap_memslot(kvm, memslot);
+
+ spin_unlock(&kvm->mmu_lock);
+ srcu_read_unlock(&kvm->srcu, idx);
+}
+
/**
* kvm_free_stage2_pgd - free all stage-2 tables
* @kvm: The KVM struct pointer for the VM.
@@ -834,6 +899,11 @@ static bool kvm_is_write_fault(struct kvm_vcpu *vcpu)
return kvm_vcpu_dabt_iswrite(vcpu);
}
+static bool kvm_is_device_pfn(unsigned long pfn)
+{
+ return !pfn_valid(pfn);
+}
+
static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
struct kvm_memory_slot *memslot, unsigned long hva,
unsigned long fault_status)
@@ -847,6 +917,7 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
struct vm_area_struct *vma;
pfn_t pfn;
pgprot_t mem_type = PAGE_S2;
+ bool fault_ipa_uncached;
write_fault = kvm_is_write_fault(vcpu);
if (fault_status == FSC_PERM && !write_fault) {
@@ -904,7 +975,7 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
if (is_error_pfn(pfn))
return -EFAULT;
- if (kvm_is_mmio_pfn(pfn))
+ if (kvm_is_device_pfn(pfn))
mem_type = PAGE_S2_DEVICE;
spin_lock(&kvm->mmu_lock);
@@ -913,6 +984,8 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
if (!hugetlb && !force_pte)
hugetlb = transparent_hugepage_adjust(&pfn, &fault_ipa);
+ fault_ipa_uncached = memslot->flags & KVM_MEMSLOT_INCOHERENT;
+
if (hugetlb) {
pmd_t new_pmd = pfn_pmd(pfn, mem_type);
new_pmd = pmd_mkhuge(new_pmd);
@@ -920,7 +993,8 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
kvm_set_s2pmd_writable(&new_pmd);
kvm_set_pfn_dirty(pfn);
}
- coherent_cache_guest_page(vcpu, hva & PMD_MASK, PMD_SIZE);
+ coherent_cache_guest_page(vcpu, hva & PMD_MASK, PMD_SIZE,
+ fault_ipa_uncached);
ret = stage2_set_pmd_huge(kvm, memcache, fault_ipa, &new_pmd);
} else {
pte_t new_pte = pfn_pte(pfn, mem_type);
@@ -928,7 +1002,8 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
kvm_set_s2pte_writable(&new_pte);
kvm_set_pfn_dirty(pfn);
}
- coherent_cache_guest_page(vcpu, hva, PAGE_SIZE);
+ coherent_cache_guest_page(vcpu, hva, PAGE_SIZE,
+ fault_ipa_uncached);
ret = stage2_set_pte(kvm, memcache, fault_ipa, &new_pte,
pgprot_val(mem_type) == pgprot_val(PAGE_S2_DEVICE));
}
@@ -1288,11 +1363,12 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm,
hva = vm_end;
} while (hva < reg_end);
- if (ret) {
- spin_lock(&kvm->mmu_lock);
+ spin_lock(&kvm->mmu_lock);
+ if (ret)
unmap_stage2_range(kvm, mem->guest_phys_addr, mem->memory_size);
- spin_unlock(&kvm->mmu_lock);
- }
+ else
+ stage2_flush_memslot(kvm, memslot);
+ spin_unlock(&kvm->mmu_lock);
return ret;
}
@@ -1304,6 +1380,15 @@ void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
unsigned long npages)
{
+ /*
+ * Readonly memslots are not incoherent with the caches by definition,
+ * but in practice, they are used mostly to emulate ROMs or NOR flashes
+ * that the guest may consider devices and hence map as uncached.
+ * To prevent incoherency issues in these cases, tag all readonly
+ * regions as incoherent.
+ */
+ if (slot->flags & KVM_MEM_READONLY)
+ slot->flags |= KVM_MEMSLOT_INCOHERENT;
return 0;
}
diff --git a/arch/arm/kvm/psci.c b/arch/arm/kvm/psci.c
index 09cf37737ee2..58cb3248d277 100644
--- a/arch/arm/kvm/psci.c
+++ b/arch/arm/kvm/psci.c
@@ -15,6 +15,7 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <linux/preempt.h>
#include <linux/kvm_host.h>
#include <linux/wait.h>
@@ -166,6 +167,23 @@ static unsigned long kvm_psci_vcpu_affinity_info(struct kvm_vcpu *vcpu)
static void kvm_prepare_system_event(struct kvm_vcpu *vcpu, u32 type)
{
+ int i;
+ struct kvm_vcpu *tmp;
+
+ /*
+ * The KVM ABI specifies that a system event exit may call KVM_RUN
+ * again and may perform shutdown/reboot at a later time that when the
+ * actual request is made. Since we are implementing PSCI and a
+ * caller of PSCI reboot and shutdown expects that the system shuts
+ * down or reboots immediately, let's make sure that VCPUs are not run
+ * after this call is handled and before the VCPUs have been
+ * re-initialized.
+ */
+ kvm_for_each_vcpu(i, tmp, vcpu->kvm) {
+ tmp->arch.pause = true;
+ kvm_vcpu_kick(tmp);
+ }
+
memset(&vcpu->run->system_event, 0, sizeof(vcpu->run->system_event));
vcpu->run->system_event.type = type;
vcpu->run->exit_reason = KVM_EXIT_SYSTEM_EVENT;
diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h
index 5674a55b5518..8127e45e2637 100644
--- a/arch/arm64/include/asm/kvm_emulate.h
+++ b/arch/arm64/include/asm/kvm_emulate.h
@@ -38,6 +38,11 @@ void kvm_inject_undefined(struct kvm_vcpu *vcpu);
void kvm_inject_dabt(struct kvm_vcpu *vcpu, unsigned long addr);
void kvm_inject_pabt(struct kvm_vcpu *vcpu, unsigned long addr);
+static inline void vcpu_reset_hcr(struct kvm_vcpu *vcpu)
+{
+ vcpu->arch.hcr_el2 = HCR_GUEST_FLAGS;
+}
+
static inline unsigned long *vcpu_pc(const struct kvm_vcpu *vcpu)
{
return (unsigned long *)&vcpu_gp_regs(vcpu)->regs.pc;
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 2012c4ba8d67..0b7dfdb931df 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -165,8 +165,6 @@ struct kvm_vcpu_stat {
u32 halt_wakeup;
};
-int kvm_vcpu_set_target(struct kvm_vcpu *vcpu,
- const struct kvm_vcpu_init *init);
int kvm_vcpu_preferred_target(struct kvm_vcpu_init *init);
unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu);
int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices);
@@ -200,6 +198,7 @@ struct kvm_vcpu *kvm_arm_get_running_vcpu(void);
struct kvm_vcpu * __percpu *kvm_get_running_vcpus(void);
u64 kvm_call_hyp(void *hypfn, ...);
+void force_vm_exit(const cpumask_t *mask);
int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *run,
int exception_index);
diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h
index 0caf7a59f6a1..14a74f136272 100644
--- a/arch/arm64/include/asm/kvm_mmu.h
+++ b/arch/arm64/include/asm/kvm_mmu.h
@@ -83,6 +83,7 @@ int create_hyp_io_mappings(void *from, void *to, phys_addr_t);
void free_boot_hyp_pgd(void);
void free_hyp_pgds(void);
+void stage2_unmap_vm(struct kvm *kvm);
int kvm_alloc_stage2_pgd(struct kvm *kvm);
void kvm_free_stage2_pgd(struct kvm *kvm);
int kvm_phys_addr_ioremap(struct kvm *kvm, phys_addr_t guest_ipa,
@@ -243,9 +244,10 @@ static inline bool vcpu_has_cache_enabled(struct kvm_vcpu *vcpu)
}
static inline void coherent_cache_guest_page(struct kvm_vcpu *vcpu, hva_t hva,
- unsigned long size)
+ unsigned long size,
+ bool ipa_uncached)
{
- if (!vcpu_has_cache_enabled(vcpu))
+ if (!vcpu_has_cache_enabled(vcpu) || ipa_uncached)
kvm_flush_dcache_to_poc((void *)hva, size);
if (!icache_is_aliasing()) { /* PIPT */
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index 76794692c20b..9535bd555d1d 100644
--- a/arch/arm64/kvm/guest.c
+++ b/arch/arm64/kvm/guest.c
@@ -38,7 +38,6 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
{
- vcpu->arch.hcr_el2 = HCR_GUEST_FLAGS;
return 0;
}
@@ -297,31 +296,6 @@ int __attribute_const__ kvm_target_cpu(void)
return -EINVAL;
}
-int kvm_vcpu_set_target(struct kvm_vcpu *vcpu,
- const struct kvm_vcpu_init *init)
-{
- unsigned int i;
- int phys_target = kvm_target_cpu();
-
- if (init->target != phys_target)
- return -EINVAL;
-
- vcpu->arch.target = phys_target;
- bitmap_zero(vcpu->arch.features, KVM_VCPU_MAX_FEATURES);
-
- /* -ENOENT for unknown features, -EINVAL for invalid combinations. */
- for (i = 0; i < sizeof(init->features) * 8; i++) {
- if (init->features[i / 32] & (1 << (i % 32))) {
- if (i >= KVM_VCPU_MAX_FEATURES)
- return -ENOENT;
- set_bit(i, vcpu->arch.features);
- }
- }
-
- /* Now we know what it is, we can reset it. */
- return kvm_reset_vcpu(vcpu);
-}
-
int kvm_vcpu_preferred_target(struct kvm_vcpu_init *init)
{
int target = kvm_target_cpu();
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 4ea0dcb0b21b..10fbed126b11 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -629,7 +629,7 @@ static int mmu_spte_clear_track_bits(u64 *sptep)
* kvm mmu, before reclaiming the page, we should
* unmap it from mmu first.
*/
- WARN_ON(!kvm_is_mmio_pfn(pfn) && !page_count(pfn_to_page(pfn)));
+ WARN_ON(!kvm_is_reserved_pfn(pfn) && !page_count(pfn_to_page(pfn)));
if (!shadow_accessed_mask || old_spte & shadow_accessed_mask)
kvm_set_pfn_accessed(pfn);
@@ -2460,7 +2460,7 @@ static int set_spte(struct kvm_vcpu *vcpu, u64 *sptep,
spte |= PT_PAGE_SIZE_MASK;
if (tdp_enabled)
spte |= kvm_x86_ops->get_mt_mask(vcpu, gfn,
- kvm_is_mmio_pfn(pfn));
+ kvm_is_reserved_pfn(pfn));
if (host_writable)
spte |= SPTE_HOST_WRITEABLE;
@@ -2736,7 +2736,7 @@ static void transparent_hugepage_adjust(struct kvm_vcpu *vcpu,
* PT_PAGE_TABLE_LEVEL and there would be no adjustment done
* here.
*/
- if (!is_error_noslot_pfn(pfn) && !kvm_is_mmio_pfn(pfn) &&
+ if (!is_error_noslot_pfn(pfn) && !kvm_is_reserved_pfn(pfn) &&
level == PT_PAGE_TABLE_LEVEL &&
PageTransCompound(pfn_to_page(pfn)) &&
!has_wrprotected_page(vcpu->kvm, gfn, PT_DIRECTORY_LEVEL)) {
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.