The patch titled
KVM: make vcpu creation and destruction arch operations
has been added to the -mm tree. Its filename is
kvm-make-vcpu-creation-and-destruction-arch-operations.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: KVM: make vcpu creation and destruction arch operations
From: Avi Kivity <avi@xxxxxxxxxxxx>
Signed-off-by: Avi Kivity <avi@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
drivers/kvm/kvm.h | 5 +-
drivers/kvm/kvm_main.c | 74 +-----------------------------------
drivers/kvm/vmx.c | 79 ++++++++++++++++++++++++++++++++++++++-
3 files changed, 85 insertions(+), 73 deletions(-)
diff -puN drivers/kvm/kvm.h~kvm-make-vcpu-creation-and-destruction-arch-operations drivers/kvm/kvm.h
--- a/drivers/kvm/kvm.h~kvm-make-vcpu-creation-and-destruction-arch-operations
+++ a/drivers/kvm/kvm.h
@@ -260,6 +260,9 @@ struct kvm_arch_ops {
int (*hardware_setup)(void); /* __init */
void (*hardware_unsetup)(void); /* __exit */
+ int (*vcpu_create)(struct kvm_vcpu *vcpu);
+ void (*vcpu_free)(struct kvm_vcpu *vcpu);
+
struct kvm_vcpu *(*vcpu_load)(struct kvm_vcpu *vcpu);
void (*vcpu_put)(struct kvm_vcpu *vcpu);
@@ -299,8 +302,6 @@ struct kvm_arch_ops {
void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
};
-void __vcpu_clear(void *arg); /* temporary hack */
-
extern struct kvm_stat kvm_stat;
extern struct kvm_arch_ops *kvm_arch_ops;
diff -puN drivers/kvm/kvm_main.c~kvm-make-vcpu-creation-and-destruction-arch-operations drivers/kvm/kvm_main.c
--- a/drivers/kvm/kvm_main.c~kvm-make-vcpu-creation-and-destruction-arch-operations
+++ a/drivers/kvm/kvm_main.c
@@ -219,31 +219,6 @@ int kvm_write_guest(struct kvm_vcpu *vcp
}
EXPORT_SYMBOL_GPL(kvm_write_guest);
-static void vmcs_clear(struct vmcs *vmcs)
-{
- u64 phys_addr = __pa(vmcs);
- u8 error;
-
- asm volatile (ASM_VMX_VMCLEAR_RAX "; setna %0"
- : "=g"(error) : "a"(&phys_addr), "m"(phys_addr)
- : "cc", "memory");
- if (error)
- printk(KERN_ERR "kvm: vmclear fail: %p/%llx\n",
- vmcs, phys_addr);
-}
-
-void __vcpu_clear(void *arg)
-{
- struct kvm_vcpu *vcpu = arg;
- int cpu = smp_processor_id();
-
- if (vcpu->cpu == cpu)
- vmcs_clear(vcpu->vmcs);
- if (per_cpu(current_vmcs, cpu) == vcpu->vmcs)
- per_cpu(current_vmcs, cpu) = 0;
-}
-EXPORT_SYMBOL_GPL(__vcpu_clear);
-
static int vcpu_slot(struct kvm_vcpu *vcpu)
{
return vcpu - vcpu->kvm->vcpus;
@@ -271,33 +246,6 @@ static void vcpu_put(struct kvm_vcpu *vc
mutex_unlock(&vcpu->mutex);
}
-struct vmcs *alloc_vmcs_cpu(int cpu)
-{
- int node = cpu_to_node(cpu);
- struct page *pages;
- struct vmcs *vmcs;
-
- pages = alloc_pages_node(node, GFP_KERNEL, vmcs_descriptor.order);
- if (!pages)
- return 0;
- vmcs = page_address(pages);
- memset(vmcs, 0, vmcs_descriptor.size);
- vmcs->revision_id = vmcs_descriptor.revision_id; /* vmcs revision id */
- return vmcs;
-}
-EXPORT_SYMBOL_GPL(alloc_vmcs_cpu);
-
-static struct vmcs *alloc_vmcs(void)
-{
- return alloc_vmcs_cpu(smp_processor_id());
-}
-
-void free_vmcs(struct vmcs *vmcs)
-{
- free_pages((unsigned long)vmcs, vmcs_descriptor.order);
-}
-EXPORT_SYMBOL_GPL(free_vmcs);
-
static int kvm_dev_open(struct inode *inode, struct file *filp)
{
struct kvm *kvm = kzalloc(sizeof(struct kvm), GFP_KERNEL);
@@ -350,18 +298,9 @@ static void kvm_free_physmem(struct kvm
kvm_free_physmem_slot(&kvm->memslots[i], 0);
}
-static void kvm_free_vmcs(struct kvm_vcpu *vcpu)
-{
- if (vcpu->vmcs) {
- on_each_cpu(__vcpu_clear, vcpu, 0, 1);
- free_vmcs(vcpu->vmcs);
- vcpu->vmcs = 0;
- }
-}
-
static void kvm_free_vcpu(struct kvm_vcpu *vcpu)
{
- kvm_free_vmcs(vcpu);
+ kvm_arch_ops->vcpu_free(vcpu);
kvm_mmu_destroy(vcpu);
}
@@ -613,7 +552,6 @@ static int kvm_dev_ioctl_create_vcpu(str
{
int r;
struct kvm_vcpu *vcpu;
- struct vmcs *vmcs;
r = -EINVAL;
if (n < 0 || n >= KVM_MAX_VCPUS)
@@ -634,14 +572,9 @@ static int kvm_dev_ioctl_create_vcpu(str
vcpu->cpu = -1; /* First load will set up TR */
vcpu->kvm = kvm;
- vmcs = alloc_vmcs();
- if (!vmcs) {
- mutex_unlock(&vcpu->mutex);
+ r = kvm_arch_ops->vcpu_create(vcpu);
+ if (r < 0)
goto out_free_vcpus;
- }
- vmcs_clear(vmcs);
- vcpu->vmcs = vmcs;
- vcpu->launched = 0;
kvm_arch_ops->vcpu_load(vcpu);
@@ -658,6 +591,7 @@ static int kvm_dev_ioctl_create_vcpu(str
out_free_vcpus:
kvm_free_vcpu(vcpu);
+ mutex_unlock(&vcpu->mutex);
out:
return r;
}
diff -puN drivers/kvm/vmx.c~kvm-make-vcpu-creation-and-destruction-arch-operations drivers/kvm/vmx.c
--- a/drivers/kvm/vmx.c~kvm-make-vcpu-creation-and-destruction-arch-operations
+++ a/drivers/kvm/vmx.c
@@ -77,6 +77,30 @@ static const u32 vmx_msr_index[] = {
struct vmx_msr_entry *find_msr_entry(struct kvm_vcpu *vcpu, u32 msr);
+static void vmcs_clear(struct vmcs *vmcs)
+{
+ u64 phys_addr = __pa(vmcs);
+ u8 error;
+
+ asm volatile (ASM_VMX_VMCLEAR_RAX "; setna %0"
+ : "=g"(error) : "a"(&phys_addr), "m"(phys_addr)
+ : "cc", "memory");
+ if (error)
+ printk(KERN_ERR "kvm: vmclear fail: %p/%llx\n",
+ vmcs, phys_addr);
+}
+
+static void __vcpu_clear(void *arg)
+{
+ struct kvm_vcpu *vcpu = arg;
+ int cpu = smp_processor_id();
+
+ if (vcpu->cpu == cpu)
+ vmcs_clear(vcpu->vmcs);
+ if (per_cpu(current_vmcs, cpu) == vcpu->vmcs)
+ per_cpu(current_vmcs, cpu) = 0;
+}
+
/*
* Switches to specified vcpu, until a matching vcpu_put(), but assumes
* vcpu mutex is already taken.
@@ -449,7 +473,30 @@ static __init void setup_vmcs_descriptor
vmcs_descriptor.revision_id = vmx_msr_low;
};
-void free_vmcs(struct vmcs *vmcs);
+static struct vmcs *alloc_vmcs_cpu(int cpu)
+{
+ int node = cpu_to_node(cpu);
+ struct page *pages;
+ struct vmcs *vmcs;
+
+ pages = alloc_pages_node(node, GFP_KERNEL, vmcs_descriptor.order);
+ if (!pages)
+ return 0;
+ vmcs = page_address(pages);
+ memset(vmcs, 0, vmcs_descriptor.size);
+ vmcs->revision_id = vmcs_descriptor.revision_id; /* vmcs revision id */
+ return vmcs;
+}
+
+static struct vmcs *alloc_vmcs(void)
+{
+ return alloc_vmcs_cpu(smp_processor_id());
+}
+
+static void free_vmcs(struct vmcs *vmcs)
+{
+ free_pages((unsigned long)vmcs, vmcs_descriptor.order);
+}
static __exit void free_kvm_area(void)
{
@@ -1790,6 +1837,33 @@ static void vmx_inject_page_fault(struct
}
+static void vmx_free_vmcs(struct kvm_vcpu *vcpu)
+{
+ if (vcpu->vmcs) {
+ on_each_cpu(__vcpu_clear, vcpu, 0, 1);
+ free_vmcs(vcpu->vmcs);
+ vcpu->vmcs = 0;
+ }
+}
+
+static void vmx_free_vcpu(struct kvm_vcpu *vcpu)
+{
+ vmx_free_vmcs(vcpu);
+}
+
+static int vmx_create_vcpu(struct kvm_vcpu *vcpu)
+{
+ struct vmcs *vmcs;
+
+ vmcs = alloc_vmcs();
+ if (!vmcs)
+ return -ENOMEM;
+ vmcs_clear(vmcs);
+ vcpu->vmcs = vmcs;
+ vcpu->launched = 0;
+ return 0;
+}
+
static struct kvm_arch_ops vmx_arch_ops = {
.cpu_has_kvm_support = cpu_has_kvm_support,
.disabled_by_bios = vmx_disabled_by_bios,
@@ -1798,6 +1872,9 @@ static struct kvm_arch_ops vmx_arch_ops
.hardware_enable = hardware_enable,
.hardware_disable = hardware_disable,
+ .vcpu_create = vmx_create_vcpu,
+ .vcpu_free = vmx_free_vcpu,
+
.vcpu_load = vmx_vcpu_load,
.vcpu_put = vmx_vcpu_put,
_
Patches currently in -mm which might be from avi@xxxxxxxxxxxx are
kvm-userspace-interface.patch
kvm-userspace-interface-make-enum-values-in-userspace-interface-explicit.patch
kvm-intel-virtual-mode-extensions-definitions.patch
kvm-kvm-data-structures.patch
kvm-random-accessors-and-constants.patch
kvm-virtualization-infrastructure.patch
kvm-virtualization-infrastructure-kvm-fix-guest-cr4-corruption.patch
kvm-virtualization-infrastructure-include-desch.patch
kvm-virtualization-infrastructure-fix-segment-state-changes-across-processor-mode-switches.patch
kvm-virtualization-infrastructure-fix-asm-constraints-for-segment-loads.patch
kvm-virtualization-infrastructure-fix-mmu-reset-locking-when-setting-cr0.patch
kvm-memory-slot-management.patch
kvm-vcpu-creation-and-maintenance.patch
kvm-vcpu-creation-and-maintenance-segment-access-cleanup.patch
kvm-workaround-cr0cd-cache-disable-bit-leak-from-guest-to.patch
kvm-vcpu-execution-loop.patch
kvm-define-exit-handlers.patch
kvm-define-exit-handlers-pass-fs-gs-segment-bases-to-x86-emulator.patch
kvm-less-common-exit-handlers.patch
kvm-less-common-exit-handlers-handle-rdmsrmsr_efer.patch
kvm-mmu.patch
kvm-x86-emulator.patch
kvm-clarify-licensing.patch
kvm-x86-emulator-fix-emulator-mov-cr-decoding.patch
kvm-plumbing.patch
kvm-dynamically-determine-which-msrs-to-load-and-save.patch
kvm-fix-calculation-of-initial-value-of-rdx-register.patch
kvm-avoid-using-vmx-instruction-directly.patch
kvm-avoid-using-vmx-instruction-directly-fix-asm-constraints.patch
kvm-expose-interrupt-bitmap.patch
kvm-add-time-stamp-counter-msr-and-accessors.patch
kvm-expose-msrs-to-userspace.patch
kvm-expose-msrs-to-userspace-v2.patch
kvm-create-kvm-intelko-module.patch
kvm-make-dev-registration-happen-when-the-arch.patch
kvm-make-hardware-detection-an-arch-operation.patch
kvm-make-the-per-cpu-enable-disable-functions-arch.patch
kvm-make-the-hardware-setup-operations-non-percpu.patch
kvm-make-the-guest-debugger-an-arch-operation.patch
kvm-make-msr-accessors-arch-operations.patch
kvm-make-the-segment-accessors-arch-operations.patch
kvm-cache-guest-cr4-in-vcpu-structure.patch
kvm-cache-guest-cr0-in-vcpu-structure.patch
kvm-add-get_segment_base-arch-accessor.patch
kvm-add-idt-and-gdt-descriptor-accessors.patch
kvm-make-syncing-the-register-file-to-the-vcpu.patch
kvm-make-the-vcpu-execution-loop-an-arch-operation.patch
kvm-move-the-vmx-exit-handlers-to-vmxc.patch
kvm-make-vcpu_setup-an-arch-operation.patch
kvm-make-__set_cr0-and-dependencies-arch-operations.patch
kvm-make-__set_cr4-an-arch-operation.patch
kvm-make-__set_efer-an-arch-operation.patch
kvm-make-set_cr3-and-tlb-flushing-arch-operations.patch
kvm-make-inject_page_fault-an-arch-operation.patch
kvm-make-inject_gp-an-arch-operation.patch
kvm-use-the-idt-and-gdt-accessors-in-realmode-emulation.patch
kvm-use-the-general-purpose-register-accessors-rather.patch
kvm-move-the-vmx-tsc-accessors-to-vmxc.patch
kvm-access-rflags-through-an-arch-operation.patch
kvm-move-the-vmx-segment-field-definitions-to-vmxc.patch
kvm-add-an-arch-accessor-for-cs-d-b-and-l-bits.patch
kvm-add-a-set_cr0_no_modeswitch-arch-accessor.patch
kvm-make-vcpu_load-and-vcpu_put-arch-operations.patch
kvm-make-vcpu-creation-and-destruction-arch-operations.patch
kvm-move-vmcs-static-variables-to-vmxc.patch
kvm-make-is_long_mode-an-arch-operation.patch
kvm-use-the-tlb-flush-arch-operation-instead-of-an.patch
kvm-remove-guest_cpl.patch
kvm-move-vmcs-accessors-to-vmxc.patch
kvm-move-vmx-helper-inlines-to-vmxc.patch
kvm-remove-vmx-includes-from-arch-independent-code.patch
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