The patch titled
KVM: make the segment accessors arch operations
has been added to the -mm tree. Its filename is
kvm-make-the-segment-accessors-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 the segment accessors 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 | 4 +
drivers/kvm/kvm_main.c | 97 ++++++++++-----------------------------
drivers/kvm/vmx.c | 58 +++++++++++++++++++++++
3 files changed, 87 insertions(+), 72 deletions(-)
diff -puN drivers/kvm/kvm.h~kvm-make-the-segment-accessors-arch-operations drivers/kvm/kvm.h
--- a/drivers/kvm/kvm.h~kvm-make-the-segment-accessors-arch-operations
+++ a/drivers/kvm/kvm.h
@@ -247,6 +247,10 @@ struct kvm_arch_ops {
struct kvm_debug_guest *dbg);
int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
+ void (*get_segment)(struct kvm_vcpu *vcpu,
+ struct kvm_segment *var, int seg);
+ void (*set_segment)(struct kvm_vcpu *vcpu,
+ struct kvm_segment *var, int seg);
};
extern struct kvm_stat kvm_stat;
diff -puN drivers/kvm/kvm_main.c~kvm-make-the-segment-accessors-arch-operations drivers/kvm/kvm_main.c
--- a/drivers/kvm/kvm_main.c~kvm-make-the-segment-accessors-arch-operations
+++ a/drivers/kvm/kvm_main.c
@@ -36,6 +36,7 @@
#include <asm/desc.h>
#include "vmx.h"
+#include "kvm_vmx.h"
#include "x86_emulate.h"
MODULE_AUTHOR("Qumranet");
@@ -82,7 +83,7 @@ enum {
GUEST_##seg##_AR_BYTES, \
}
-static struct kvm_vmx_segment_field {
+struct kvm_vmx_segment_field {
unsigned selector;
unsigned base;
unsigned limit;
@@ -97,6 +98,7 @@ static struct kvm_vmx_segment_field {
VMX_SEGMENT_FIELD(TR),
VMX_SEGMENT_FIELD(LDTR),
};
+EXPORT_SYMBOL_GPL(kvm_vmx_segment_fields);
static const u32 vmx_msr_index[] = {
#ifdef __x86_64__
@@ -625,22 +627,6 @@ void vmcs_writel(unsigned long field, un
}
EXPORT_SYMBOL_GPL(vmcs_writel);
-static void vmcs_write16(unsigned long field, u16 value)
-{
- vmcs_writel(field, value);
-}
-
-static void vmcs_write64(unsigned long field, u64 value)
-{
-#ifdef __x86_64__
- vmcs_writel(field, value);
-#else
- vmcs_writel(field, value);
- asm volatile ("");
- vmcs_writel(field+1, value >> 32);
-#endif
-}
-
static void inject_gp(struct kvm_vcpu *vcpu)
{
printk(KERN_DEBUG "inject_general_protection: rip 0x%lx\n",
@@ -2821,26 +2807,10 @@ static int kvm_dev_ioctl_set_regs(struct
return 0;
}
-static void get_segment(struct kvm_segment *var, int seg)
+static void get_segment(struct kvm_vcpu *vcpu,
+ struct kvm_segment *var, int seg)
{
- struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
- u32 ar;
-
- var->base = vmcs_readl(sf->base);
- var->limit = vmcs_read32(sf->limit);
- var->selector = vmcs_read16(sf->selector);
- ar = vmcs_read32(sf->ar_bytes);
- if (ar & AR_UNUSABLE_MASK)
- ar = 0;
- var->type = ar & 15;
- var->s = (ar >> 4) & 1;
- var->dpl = (ar >> 5) & 3;
- var->present = (ar >> 7) & 1;
- var->avl = (ar >> 12) & 1;
- var->l = (ar >> 13) & 1;
- var->db = (ar >> 14) & 1;
- var->g = (ar >> 15) & 1;
- var->unusable = (ar >> 16) & 1;
+ return kvm_arch_ops->get_segment(vcpu, var, seg);
}
static int kvm_dev_ioctl_get_sregs(struct kvm *kvm, struct kvm_sregs *sregs)
@@ -2853,15 +2823,15 @@ static int kvm_dev_ioctl_get_sregs(struc
if (!vcpu)
return -ENOENT;
- get_segment(&sregs->cs, VCPU_SREG_CS);
- get_segment(&sregs->ds, VCPU_SREG_DS);
- get_segment(&sregs->es, VCPU_SREG_ES);
- get_segment(&sregs->fs, VCPU_SREG_FS);
- get_segment(&sregs->gs, VCPU_SREG_GS);
- get_segment(&sregs->ss, VCPU_SREG_SS);
+ get_segment(vcpu, &sregs->cs, VCPU_SREG_CS);
+ get_segment(vcpu, &sregs->ds, VCPU_SREG_DS);
+ get_segment(vcpu, &sregs->es, VCPU_SREG_ES);
+ get_segment(vcpu, &sregs->fs, VCPU_SREG_FS);
+ get_segment(vcpu, &sregs->gs, VCPU_SREG_GS);
+ get_segment(vcpu, &sregs->ss, VCPU_SREG_SS);
- get_segment(&sregs->tr, VCPU_SREG_TR);
- get_segment(&sregs->ldt, VCPU_SREG_LDTR);
+ 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), \
@@ -2887,27 +2857,10 @@ static int kvm_dev_ioctl_get_sregs(struc
return 0;
}
-static void set_segment(struct kvm_segment *var, int seg)
+static void set_segment(struct kvm_vcpu *vcpu,
+ struct kvm_segment *var, int seg)
{
- struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
- u32 ar;
-
- vmcs_writel(sf->base, var->base);
- vmcs_write32(sf->limit, var->limit);
- vmcs_write16(sf->selector, var->selector);
- if (var->unusable)
- ar = 1 << 16;
- else {
- ar = var->type & 15;
- ar |= (var->s & 1) << 4;
- ar |= (var->dpl & 3) << 5;
- ar |= (var->present & 1) << 7;
- ar |= (var->avl & 1) << 12;
- ar |= (var->l & 1) << 13;
- ar |= (var->db & 1) << 14;
- ar |= (var->g & 1) << 15;
- }
- vmcs_write32(sf->ar_bytes, ar);
+ return kvm_arch_ops->set_segment(vcpu, var, seg);
}
static int kvm_dev_ioctl_set_sregs(struct kvm *kvm, struct kvm_sregs *sregs)
@@ -2922,15 +2875,15 @@ static int kvm_dev_ioctl_set_sregs(struc
if (!vcpu)
return -ENOENT;
- set_segment(&sregs->cs, VCPU_SREG_CS);
- set_segment(&sregs->ds, VCPU_SREG_DS);
- set_segment(&sregs->es, VCPU_SREG_ES);
- set_segment(&sregs->fs, VCPU_SREG_FS);
- set_segment(&sregs->gs, VCPU_SREG_GS);
- set_segment(&sregs->ss, VCPU_SREG_SS);
+ set_segment(vcpu, &sregs->cs, VCPU_SREG_CS);
+ set_segment(vcpu, &sregs->ds, VCPU_SREG_DS);
+ set_segment(vcpu, &sregs->es, VCPU_SREG_ES);
+ set_segment(vcpu, &sregs->fs, VCPU_SREG_FS);
+ set_segment(vcpu, &sregs->gs, VCPU_SREG_GS);
+ set_segment(vcpu, &sregs->ss, VCPU_SREG_SS);
- set_segment(&sregs->tr, VCPU_SREG_TR);
- set_segment(&sregs->ldt, VCPU_SREG_LDTR);
+ 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), \
diff -puN drivers/kvm/vmx.c~kvm-make-the-segment-accessors-arch-operations drivers/kvm/vmx.c
--- a/drivers/kvm/vmx.c~kvm-make-the-segment-accessors-arch-operations
+++ a/drivers/kvm/vmx.c
@@ -17,6 +17,8 @@
#include "kvm.h"
#include <linux/module.h>
+#include "vmx.h"
+#include "kvm_vmx.h"
#define MSR_IA32_FEATURE_CONTROL 0x03a
@@ -31,6 +33,13 @@ extern struct vmcs_descriptor {
u32 revision_id;
} vmcs_descriptor;
+extern struct kvm_vmx_segment_field {
+ unsigned selector;
+ unsigned base;
+ unsigned limit;
+ unsigned ar_bytes;
+} kvm_vmx_segment_fields[];
+
u64 guest_read_tsc(void);
void guest_write_tsc(u64 guest_tsc);
struct vmx_msr_entry *find_msr_entry(struct kvm_vcpu *vcpu, u32 msr);
@@ -300,6 +309,53 @@ static __exit void hardware_unsetup(void
free_kvm_area();
}
+static void vmx_get_segment(struct kvm_vcpu *vcpu,
+ struct kvm_segment *var, int seg)
+{
+ struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
+ u32 ar;
+
+ var->base = vmcs_readl(sf->base);
+ var->limit = vmcs_read32(sf->limit);
+ var->selector = vmcs_read16(sf->selector);
+ ar = vmcs_read32(sf->ar_bytes);
+ if (ar & AR_UNUSABLE_MASK)
+ ar = 0;
+ var->type = ar & 15;
+ var->s = (ar >> 4) & 1;
+ var->dpl = (ar >> 5) & 3;
+ var->present = (ar >> 7) & 1;
+ var->avl = (ar >> 12) & 1;
+ var->l = (ar >> 13) & 1;
+ var->db = (ar >> 14) & 1;
+ var->g = (ar >> 15) & 1;
+ var->unusable = (ar >> 16) & 1;
+}
+
+static void vmx_set_segment(struct kvm_vcpu *vcpu,
+ struct kvm_segment *var, int seg)
+{
+ struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
+ u32 ar;
+
+ vmcs_writel(sf->base, var->base);
+ vmcs_write32(sf->limit, var->limit);
+ vmcs_write16(sf->selector, var->selector);
+ if (var->unusable)
+ ar = 1 << 16;
+ else {
+ ar = var->type & 15;
+ ar |= (var->s & 1) << 4;
+ ar |= (var->dpl & 3) << 5;
+ ar |= (var->present & 1) << 7;
+ ar |= (var->avl & 1) << 12;
+ ar |= (var->l & 1) << 13;
+ ar |= (var->db & 1) << 14;
+ ar |= (var->g & 1) << 15;
+ }
+ vmcs_write32(sf->ar_bytes, ar);
+}
+
static struct kvm_arch_ops vmx_arch_ops = {
.cpu_has_kvm_support = cpu_has_kvm_support,
.disabled_by_bios = vmx_disabled_by_bios,
@@ -311,6 +367,8 @@ static struct kvm_arch_ops vmx_arch_ops
.set_guest_debug = set_guest_debug,
.get_msr = vmx_get_msr,
.set_msr = vmx_set_msr,
+ .get_segment = vmx_get_segment,
+ .set_segment = vmx_set_segment,
};
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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