The patch titled
KVM: add idt and gdt descriptor accessors
has been added to the -mm tree. Its filename is
kvm-add-idt-and-gdt-descriptor-accessors.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: add idt and gdt descriptor accessors
From: Avi Kivity <avi@xxxxxxxxxxxx>
Signed-off-by: Avi Kivity <avi@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
drivers/kvm/kvm.h | 9 +++++++++
drivers/kvm/kvm_main.c | 33 ++++++++++++++-------------------
drivers/kvm/vmx.c | 28 ++++++++++++++++++++++++++++
3 files changed, 51 insertions(+), 19 deletions(-)
diff -puN drivers/kvm/kvm.h~kvm-add-idt-and-gdt-descriptor-accessors drivers/kvm/kvm.h
--- a/drivers/kvm/kvm.h~kvm-add-idt-and-gdt-descriptor-accessors
+++ a/drivers/kvm/kvm.h
@@ -236,6 +236,11 @@ struct kvm_stat {
u32 irq_exits;
};
+struct descriptor_table {
+ u16 limit;
+ unsigned long base;
+} __attribute__((packed));
+
struct kvm_arch_ops {
int (*cpu_has_kvm_support)(void); /* __init */
int (*disabled_by_bios)(void); /* __init */
@@ -253,6 +258,10 @@ struct kvm_arch_ops {
struct kvm_segment *var, int seg);
void (*set_segment)(struct kvm_vcpu *vcpu,
struct kvm_segment *var, int seg);
+ void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
+ void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
+ void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
+ void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
};
extern struct kvm_stat kvm_stat;
diff -puN drivers/kvm/kvm_main.c~kvm-add-idt-and-gdt-descriptor-accessors drivers/kvm/kvm_main.c
--- a/drivers/kvm/kvm_main.c~kvm-add-idt-and-gdt-descriptor-accessors
+++ a/drivers/kvm/kvm_main.c
@@ -155,11 +155,6 @@ struct vmx_msr_entry *find_msr_entry(str
}
EXPORT_SYMBOL_GPL(find_msr_entry);
-struct descriptor_table {
- u16 limit;
- unsigned long base;
-} __attribute__((packed));
-
static void get_gdt(struct descriptor_table *table)
{
asm ("sgdt %0" : "=m"(*table));
@@ -2827,6 +2822,7 @@ static void get_segment(struct kvm_vcpu
static int kvm_dev_ioctl_get_sregs(struct kvm *kvm, struct kvm_sregs *sregs)
{
struct kvm_vcpu *vcpu;
+ struct descriptor_table dt;
if (sregs->vcpu < 0 || sregs->vcpu >= KVM_MAX_VCPUS)
return -EINVAL;
@@ -2844,13 +2840,12 @@ static int kvm_dev_ioctl_get_sregs(struc
get_segment(vcpu, &sregs->tr, VCPU_SREG_TR);
get_segment(vcpu, &sregs->ldt, VCPU_SREG_LDTR);
-#define get_dtable(var, table) \
- sregs->var.limit = vmcs_read32(GUEST_##table##_LIMIT), \
- sregs->var.base = vmcs_readl(GUEST_##table##_BASE)
-
- get_dtable(idt, IDTR);
- get_dtable(gdt, GDTR);
-#undef get_dtable
+ kvm_arch_ops->get_idt(vcpu, &dt);
+ sregs->idt.limit = dt.limit;
+ sregs->idt.base = dt.base;
+ kvm_arch_ops->get_gdt(vcpu, &dt);
+ sregs->gdt.limit = dt.limit;
+ sregs->gdt.base = dt.base;
sregs->cr0 = vcpu->cr0;
sregs->cr2 = vcpu->cr2;
@@ -2879,6 +2874,7 @@ static int kvm_dev_ioctl_set_sregs(struc
struct kvm_vcpu *vcpu;
int mmu_reset_needed = 0;
int i;
+ struct descriptor_table dt;
if (sregs->vcpu < 0 || sregs->vcpu >= KVM_MAX_VCPUS)
return -EINVAL;
@@ -2896,13 +2892,12 @@ static int kvm_dev_ioctl_set_sregs(struc
set_segment(vcpu, &sregs->tr, VCPU_SREG_TR);
set_segment(vcpu, &sregs->ldt, VCPU_SREG_LDTR);
-#define set_dtable(var, table) \
- vmcs_write32(GUEST_##table##_LIMIT, sregs->var.limit), \
- vmcs_writel(GUEST_##table##_BASE, sregs->var.base)
-
- set_dtable(idt, IDTR);
- set_dtable(gdt, GDTR);
-#undef set_dtable
+ dt.limit = sregs->idt.limit;
+ dt.base = sregs->idt.base;
+ kvm_arch_ops->set_idt(vcpu, &dt);
+ dt.limit = sregs->gdt.limit;
+ dt.base = sregs->gdt.base;
+ kvm_arch_ops->set_gdt(vcpu, &dt);
vcpu->cr2 = sregs->cr2;
mmu_reset_needed |= vcpu->cr3 != sregs->cr3;
diff -puN drivers/kvm/vmx.c~kvm-add-idt-and-gdt-descriptor-accessors drivers/kvm/vmx.c
--- a/drivers/kvm/vmx.c~kvm-add-idt-and-gdt-descriptor-accessors
+++ a/drivers/kvm/vmx.c
@@ -363,6 +363,30 @@ static void vmx_set_segment(struct kvm_v
vmcs_write32(sf->ar_bytes, ar);
}
+static void vmx_get_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
+{
+ dt->limit = vmcs_read32(GUEST_IDTR_LIMIT);
+ dt->base = vmcs_readl(GUEST_IDTR_BASE);
+}
+
+static void vmx_set_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
+{
+ vmcs_write32(GUEST_IDTR_LIMIT, dt->limit);
+ vmcs_writel(GUEST_IDTR_BASE, dt->base);
+}
+
+static void vmx_get_gdt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
+{
+ dt->limit = vmcs_read32(GUEST_GDTR_LIMIT);
+ dt->base = vmcs_readl(GUEST_GDTR_BASE);
+}
+
+static void vmx_set_gdt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
+{
+ vmcs_write32(GUEST_GDTR_LIMIT, dt->limit);
+ vmcs_writel(GUEST_GDTR_BASE, dt->base);
+}
+
static struct kvm_arch_ops vmx_arch_ops = {
.cpu_has_kvm_support = cpu_has_kvm_support,
.disabled_by_bios = vmx_disabled_by_bios,
@@ -377,6 +401,10 @@ static struct kvm_arch_ops vmx_arch_ops
.get_segment_base = vmx_get_segment_base,
.get_segment = vmx_get_segment,
.set_segment = vmx_set_segment,
+ .get_idt = vmx_get_idt,
+ .set_idt = vmx_set_idt,
+ .get_gdt = vmx_get_gdt,
+ .set_gdt = vmx_set_gdt,
};
static int __init vmx_init(void)
_
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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