[Devel] [PATCH RHEL7 COMMIT] ms/kvm/x86: move Hyper-V MSR's/hypercall code into hyperv.c file
Konstantin Khorenko
khorenko at virtuozzo.com
Fri Oct 2 01:18:11 PDT 2015
The commit is pushed to "branch-rh7-3.10.0-229.7.2.vz7.8.x-ovz" and will appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-229.7.2.vz7.8.2
------>
commit 58c49bf11d8be26b0ec56b43ccde3a93cd3ea431
Author: Andrey Smetanin <asmetanin at virtuozzo.com>
Date: Fri Oct 2 12:18:11 2015 +0400
ms/kvm/x86: move Hyper-V MSR's/hypercall code into hyperv.c file
This patch introduce Hyper-V related source code file - hyperv.c and
per vm and per vcpu hyperv context structures.
All Hyper-V MSR's and hypercall code moved into hyperv.c.
All Hyper-V kvm/vcpu fields moved into appropriate hyperv context
structures. Copyrights and authors information copied from x86.c
to hyperv.c.
ms commit - e83d58874ba1de74c13d3c6b05f95a023c860d25
Signed-off-by: Andrey Smetanin <asmetanin at virtuozzo.com>
Signed-off-by: Denis V. Lunev <den at openvz.org>
Reviewed-by: Peter Hornyack <peterhornyack at google.com>
CC: Paolo Bonzini <pbonzini at redhat.com>
CC: Gleb Natapov <gleb at kernel.org>
Signed-off-by: Paolo Bonzini <pbonzini at redhat.com>
---
arch/x86/kvm/Makefile | 3 +-
arch/x86/kvm/hyperv.c | 296 ++++++++++++++++++++++++++++++++++++++++++++++++++
arch/x86/kvm/hyperv.h | 32 ++++++
arch/x86/kvm/x86.c | 271 +--------------------------------------------
arch/x86/kvm/x86.h | 9 ++
5 files changed, 342 insertions(+), 269 deletions(-)
diff --git a/arch/x86/kvm/Makefile b/arch/x86/kvm/Makefile
index 25d22b2..a893d11 100644
--- a/arch/x86/kvm/Makefile
+++ b/arch/x86/kvm/Makefile
@@ -14,7 +14,8 @@ kvm-$(CONFIG_KVM_DEVICE_ASSIGNMENT) += $(KVM)/assigned-dev.o $(KVM)/iommu.o
kvm-$(CONFIG_KVM_ASYNC_PF) += $(KVM)/async_pf.o
kvm-y += x86.o mmu.o emulate.o i8259.o irq.o lapic.o \
- i8254.o cpuid.o pmu.o
+ i8254.o cpuid.o pmu.o hyperv.o
+
kvm-intel-y += vmx.o
kvm-amd-y += svm.o
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
new file mode 100644
index 0000000..d9d43bc
--- /dev/null
+++ b/arch/x86/kvm/hyperv.c
@@ -0,0 +1,296 @@
+/*
+ * KVM Microsoft Hyper-V emulation
+ *
+ * derived from arch/x86/kvm/x86.c
+ *
+ * Copyright (C) 2006 Qumranet, Inc.
+ * Copyright (C) 2008 Qumranet, Inc.
+ * Copyright IBM Corporation, 2008
+ * Copyright 2010 Red Hat, Inc. and/or its affiliates.
+ * Copyright (C) 2015 Andrey Smetanin <asmetanin at virtuozzo.com>
+ *
+ * Authors:
+ * Avi Kivity <avi at qumranet.com>
+ * Yaniv Kamay <yaniv at qumranet.com>
+ * Amit Shah <amit.shah at qumranet.com>
+ * Ben-Ami Yassour <benami at il.ibm.com>
+ * Andrey Smetanin <asmetanin at virtuozzo.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#include "x86.h"
+#include "lapic.h"
+#include "hyperv.h"
+
+#include <linux/kvm_host.h>
+#include <trace/events/kvm.h>
+
+#include "trace.h"
+
+static bool kvm_hv_msr_partition_wide(u32 msr)
+{
+ bool r = false;
+ switch (msr) {
+ case HV_X64_MSR_GUEST_OS_ID:
+ case HV_X64_MSR_HYPERCALL:
+ case HV_X64_MSR_REFERENCE_TSC:
+ case HV_X64_MSR_TIME_REF_COUNT:
+ r = true;
+ break;
+ }
+
+ return r;
+}
+
+static int set_msr_hyperv_pw(struct kvm_vcpu *vcpu, u32 msr, u64 data)
+{
+ struct kvm *kvm = vcpu->kvm;
+
+ switch (msr) {
+ case HV_X64_MSR_GUEST_OS_ID:
+ kvm->arch.hv_guest_os_id = data;
+ /* setting guest os id to zero disables hypercall page */
+ if (!kvm->arch.hv_guest_os_id)
+ kvm->arch.hv_hypercall &= ~HV_X64_MSR_HYPERCALL_ENABLE;
+ break;
+ case HV_X64_MSR_HYPERCALL: {
+ u64 gfn;
+ unsigned long addr;
+ u8 instructions[4];
+
+ /* if guest os id is not set hypercall should remain disabled */
+ if (!kvm->arch.hv_guest_os_id)
+ break;
+ if (!(data & HV_X64_MSR_HYPERCALL_ENABLE)) {
+ kvm->arch.hv_hypercall = data;
+ break;
+ }
+ gfn = data >> HV_X64_MSR_HYPERCALL_PAGE_ADDRESS_SHIFT;
+ addr = gfn_to_hva(kvm, gfn);
+ if (kvm_is_error_hva(addr))
+ return 1;
+ kvm_x86_ops->patch_hypercall(vcpu, instructions);
+ ((unsigned char *)instructions)[3] = 0xc3; /* ret */
+ if (__copy_to_user((void __user *)addr, instructions, 4))
+ return 1;
+ kvm->arch.hv_hypercall = data;
+ mark_page_dirty(kvm, gfn);
+ break;
+ }
+ case HV_X64_MSR_REFERENCE_TSC: {
+ u64 gfn;
+ HV_REFERENCE_TSC_PAGE tsc_ref;
+ memset(&tsc_ref, 0, sizeof(tsc_ref));
+ kvm->arch.hv_tsc_page = data;
+ if (!(data & HV_X64_MSR_TSC_REFERENCE_ENABLE))
+ break;
+ gfn = data >> HV_X64_MSR_TSC_REFERENCE_ADDRESS_SHIFT;
+ if (kvm_write_guest(kvm, gfn << HV_X64_MSR_TSC_REFERENCE_ADDRESS_SHIFT,
+ &tsc_ref, sizeof(tsc_ref)))
+ return 1;
+ mark_page_dirty(kvm, gfn);
+ break;
+ }
+ default:
+ vcpu_unimpl(vcpu, "HYPER-V unimplemented wrmsr: 0x%x "
+ "data 0x%llx\n", msr, data);
+ return 1;
+ }
+ return 0;
+}
+
+static int set_msr_hyperv(struct kvm_vcpu *vcpu, u32 msr, u64 data)
+{
+ switch (msr) {
+ case HV_X64_MSR_APIC_ASSIST_PAGE: {
+ u64 gfn;
+ unsigned long addr;
+
+ if (!(data & HV_X64_MSR_APIC_ASSIST_PAGE_ENABLE)) {
+ vcpu->arch.hv_vapic = data;
+ if (kvm_lapic_enable_pv_eoi(vcpu, 0))
+ return 1;
+ break;
+ }
+ gfn = data >> HV_X64_MSR_APIC_ASSIST_PAGE_ADDRESS_SHIFT;
+ addr = gfn_to_hva(vcpu->kvm, gfn);
+ if (kvm_is_error_hva(addr))
+ return 1;
+ if (__clear_user((void __user *)addr, PAGE_SIZE))
+ return 1;
+ vcpu->arch.hv_vapic = data;
+ mark_page_dirty(vcpu->kvm, gfn);
+ if (kvm_lapic_enable_pv_eoi(vcpu, gfn_to_gpa(gfn) | KVM_MSR_ENABLED))
+ return 1;
+ break;
+ }
+ case HV_X64_MSR_EOI:
+ return kvm_hv_vapic_msr_write(vcpu, APIC_EOI, data);
+ case HV_X64_MSR_ICR:
+ return kvm_hv_vapic_msr_write(vcpu, APIC_ICR, data);
+ case HV_X64_MSR_TPR:
+ return kvm_hv_vapic_msr_write(vcpu, APIC_TASKPRI, data);
+ default:
+ vcpu_unimpl(vcpu, "HYPER-V unimplemented wrmsr: 0x%x "
+ "data 0x%llx\n", msr, data);
+ return 1;
+ }
+
+ return 0;
+}
+
+static int get_msr_hyperv_pw(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
+{
+ u64 data = 0;
+ struct kvm *kvm = vcpu->kvm;
+
+ switch (msr) {
+ case HV_X64_MSR_GUEST_OS_ID:
+ data = kvm->arch.hv_guest_os_id;
+ break;
+ case HV_X64_MSR_HYPERCALL:
+ data = kvm->arch.hv_hypercall;
+ break;
+ case HV_X64_MSR_TIME_REF_COUNT: {
+ data =
+ div_u64(get_kernel_ns() + kvm->arch.kvmclock_offset, 100);
+ break;
+ }
+ case HV_X64_MSR_REFERENCE_TSC:
+ data = kvm->arch.hv_tsc_page;
+ break;
+ default:
+ vcpu_unimpl(vcpu, "Hyper-V unhandled rdmsr: 0x%x\n", msr);
+ return 1;
+ }
+
+ *pdata = data;
+ return 0;
+}
+
+static int get_msr_hyperv(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
+{
+ u64 data = 0;
+
+ switch (msr) {
+ case HV_X64_MSR_VP_INDEX: {
+ int r;
+ struct kvm_vcpu *v;
+ kvm_for_each_vcpu(r, v, vcpu->kvm) {
+ if (v == vcpu) {
+ data = r;
+ break;
+ }
+ }
+ break;
+ }
+ case HV_X64_MSR_EOI:
+ return kvm_hv_vapic_msr_read(vcpu, APIC_EOI, pdata);
+ case HV_X64_MSR_ICR:
+ return kvm_hv_vapic_msr_read(vcpu, APIC_ICR, pdata);
+ case HV_X64_MSR_TPR:
+ return kvm_hv_vapic_msr_read(vcpu, APIC_TASKPRI, pdata);
+ case HV_X64_MSR_APIC_ASSIST_PAGE:
+ data = vcpu->arch.hv_vapic;
+ break;
+ default:
+ vcpu_unimpl(vcpu, "Hyper-V unhandled rdmsr: 0x%x\n", msr);
+ return 1;
+ }
+ *pdata = data;
+ return 0;
+}
+
+int kvm_hv_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data)
+{
+ if (kvm_hv_msr_partition_wide(msr)) {
+ int r;
+ mutex_lock(&vcpu->kvm->lock);
+ r = set_msr_hyperv_pw(vcpu, msr, data);
+ mutex_unlock(&vcpu->kvm->lock);
+ return r;
+ } else
+ return set_msr_hyperv(vcpu, msr, data);
+}
+
+int kvm_hv_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
+{
+ if (kvm_hv_msr_partition_wide(msr)) {
+ int r;
+ mutex_lock(&vcpu->kvm->lock);
+ r = get_msr_hyperv_pw(vcpu, msr, pdata);
+ mutex_unlock(&vcpu->kvm->lock);
+ return r;
+ } else
+ return get_msr_hyperv(vcpu, msr, pdata);
+}
+
+bool kvm_hv_hypercall_enabled(struct kvm *kvm)
+{
+ return kvm->arch.hv_hypercall & HV_X64_MSR_HYPERCALL_ENABLE;
+}
+
+int kvm_hv_hypercall(struct kvm_vcpu *vcpu)
+{
+ u64 param, ingpa, outgpa, ret;
+ uint16_t code, rep_idx, rep_cnt, res = HV_STATUS_SUCCESS, rep_done = 0;
+ bool fast, longmode;
+ int cs_db, cs_l;
+
+ /*
+ * hypercall generates UD from non zero cpl and real mode
+ * per HYPER-V spec
+ */
+ if (kvm_x86_ops->get_cpl(vcpu) != 0 || !is_protmode(vcpu)) {
+ kvm_queue_exception(vcpu, UD_VECTOR);
+ return 0;
+ }
+
+ kvm_x86_ops->get_cs_db_l_bits(vcpu, &cs_db, &cs_l);
+ longmode = is_long_mode(vcpu) && cs_l == 1;
+
+ if (!longmode) {
+ param = ((u64)kvm_register_read(vcpu, VCPU_REGS_RDX) << 32) |
+ (kvm_register_read(vcpu, VCPU_REGS_RAX) & 0xffffffff);
+ ingpa = ((u64)kvm_register_read(vcpu, VCPU_REGS_RBX) << 32) |
+ (kvm_register_read(vcpu, VCPU_REGS_RCX) & 0xffffffff);
+ outgpa = ((u64)kvm_register_read(vcpu, VCPU_REGS_RDI) << 32) |
+ (kvm_register_read(vcpu, VCPU_REGS_RSI) & 0xffffffff);
+ }
+#ifdef CONFIG_X86_64
+ else {
+ param = kvm_register_read(vcpu, VCPU_REGS_RCX);
+ ingpa = kvm_register_read(vcpu, VCPU_REGS_RDX);
+ outgpa = kvm_register_read(vcpu, VCPU_REGS_R8);
+ }
+#endif
+
+ code = param & 0xffff;
+ fast = (param >> 16) & 0x1;
+ rep_cnt = (param >> 32) & 0xfff;
+ rep_idx = (param >> 48) & 0xfff;
+
+ trace_kvm_hv_hypercall(code, fast, rep_cnt, rep_idx, ingpa, outgpa);
+
+ switch (code) {
+ case HV_X64_HV_NOTIFY_LONG_SPIN_WAIT:
+ kvm_vcpu_on_spin(vcpu);
+ break;
+ default:
+ res = HV_STATUS_INVALID_HYPERCALL_CODE;
+ break;
+ }
+
+ ret = res | (((u64)rep_done & 0xfff) << 32);
+ if (longmode) {
+ kvm_register_write(vcpu, VCPU_REGS_RAX, ret);
+ } else {
+ kvm_register_write(vcpu, VCPU_REGS_RDX, ret >> 32);
+ kvm_register_write(vcpu, VCPU_REGS_RAX, ret & 0xffffffff);
+ }
+
+ return 1;
+}
diff --git a/arch/x86/kvm/hyperv.h b/arch/x86/kvm/hyperv.h
new file mode 100644
index 0000000..115c738
--- /dev/null
+++ b/arch/x86/kvm/hyperv.h
@@ -0,0 +1,32 @@
+/*
+ * KVM Microsoft Hyper-V emulation
+ *
+ * derived from arch/x86/kvm/x86.c
+ *
+ * Copyright (C) 2006 Qumranet, Inc.
+ * Copyright (C) 2008 Qumranet, Inc.
+ * Copyright IBM Corporation, 2008
+ * Copyright 2010 Red Hat, Inc. and/or its affiliates.
+ * Copyright (C) 2015 Andrey Smetanin <asmetanin at virtuozzo.com>
+ *
+ * Authors:
+ * Avi Kivity <avi at qumranet.com>
+ * Yaniv Kamay <yaniv at qumranet.com>
+ * Amit Shah <amit.shah at qumranet.com>
+ * Ben-Ami Yassour <benami at il.ibm.com>
+ * Andrey Smetanin <asmetanin at virtuozzo.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef __ARCH_X86_KVM_HYPERV_H__
+#define __ARCH_X86_KVM_HYPERV_H__
+
+int kvm_hv_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
+int kvm_hv_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
+bool kvm_hv_hypercall_enabled(struct kvm *kvm);
+int kvm_hv_hypercall(struct kvm_vcpu *vcpu);
+
+#endif
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index c20fd97..883a602 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -27,6 +27,7 @@
#include "kvm_cache_regs.h"
#include "x86.h"
#include "cpuid.h"
+#include "hyperv.h"
#include <linux/clocksource.h>
#include <linux/interrupt.h>
@@ -1107,15 +1108,6 @@ static void kvm_get_time_scale(uint32_t scaled_khz, uint32_t base_khz,
__func__, base_khz, scaled_khz, shift, *pmultiplier);
}
-static inline u64 get_kernel_ns(void)
-{
- struct timespec ts;
-
- ktime_get_ts(&ts);
- monotonic_to_bootbased(&ts);
- return timespec_to_ns(&ts);
-}
-
#ifdef CONFIG_X86_64
static atomic_t kvm_guest_has_master_clock = ATOMIC_INIT(0);
#endif
@@ -1840,123 +1832,6 @@ out:
return r;
}
-static bool kvm_hv_hypercall_enabled(struct kvm *kvm)
-{
- return kvm->arch.hv_hypercall & HV_X64_MSR_HYPERCALL_ENABLE;
-}
-
-static bool kvm_hv_msr_partition_wide(u32 msr)
-{
- bool r = false;
- switch (msr) {
- case HV_X64_MSR_GUEST_OS_ID:
- case HV_X64_MSR_HYPERCALL:
- case HV_X64_MSR_REFERENCE_TSC:
- case HV_X64_MSR_TIME_REF_COUNT:
- r = true;
- break;
- }
-
- return r;
-}
-
-static int set_msr_hyperv_pw(struct kvm_vcpu *vcpu, u32 msr, u64 data)
-{
- struct kvm *kvm = vcpu->kvm;
-
- switch (msr) {
- case HV_X64_MSR_GUEST_OS_ID:
- kvm->arch.hv_guest_os_id = data;
- /* setting guest os id to zero disables hypercall page */
- if (!kvm->arch.hv_guest_os_id)
- kvm->arch.hv_hypercall &= ~HV_X64_MSR_HYPERCALL_ENABLE;
- break;
- case HV_X64_MSR_HYPERCALL: {
- u64 gfn;
- unsigned long addr;
- u8 instructions[4];
-
- /* if guest os id is not set hypercall should remain disabled */
- if (!kvm->arch.hv_guest_os_id)
- break;
- if (!(data & HV_X64_MSR_HYPERCALL_ENABLE)) {
- kvm->arch.hv_hypercall = data;
- break;
- }
- gfn = data >> HV_X64_MSR_HYPERCALL_PAGE_ADDRESS_SHIFT;
- addr = gfn_to_hva(kvm, gfn);
- if (kvm_is_error_hva(addr))
- return 1;
- kvm_x86_ops->patch_hypercall(vcpu, instructions);
- ((unsigned char *)instructions)[3] = 0xc3; /* ret */
- if (__copy_to_user((void __user *)addr, instructions, 4))
- return 1;
- kvm->arch.hv_hypercall = data;
- mark_page_dirty(kvm, gfn);
- break;
- }
- case HV_X64_MSR_REFERENCE_TSC: {
- u64 gfn;
- HV_REFERENCE_TSC_PAGE tsc_ref;
- memset(&tsc_ref, 0, sizeof(tsc_ref));
- kvm->arch.hv_tsc_page = data;
- if (!(data & HV_X64_MSR_TSC_REFERENCE_ENABLE))
- break;
- gfn = data >> HV_X64_MSR_TSC_REFERENCE_ADDRESS_SHIFT;
- if (kvm_write_guest(kvm, gfn << HV_X64_MSR_TSC_REFERENCE_ADDRESS_SHIFT,
- &tsc_ref, sizeof(tsc_ref)))
- return 1;
- mark_page_dirty(kvm, gfn);
- break;
- }
- default:
- vcpu_unimpl(vcpu, "HYPER-V unimplemented wrmsr: 0x%x "
- "data 0x%llx\n", msr, data);
- return 1;
- }
- return 0;
-}
-
-static int set_msr_hyperv(struct kvm_vcpu *vcpu, u32 msr, u64 data)
-{
- switch (msr) {
- case HV_X64_MSR_APIC_ASSIST_PAGE: {
- u64 gfn;
- unsigned long addr;
-
- if (!(data & HV_X64_MSR_APIC_ASSIST_PAGE_ENABLE)) {
- vcpu->arch.hv_vapic = data;
- if (kvm_lapic_enable_pv_eoi(vcpu, 0))
- return 1;
- break;
- }
- gfn = data >> HV_X64_MSR_APIC_ASSIST_PAGE_ADDRESS_SHIFT;
- addr = gfn_to_hva(vcpu->kvm, gfn);
- if (kvm_is_error_hva(addr))
- return 1;
- if (__clear_user((void __user *)addr, PAGE_SIZE))
- return 1;
- vcpu->arch.hv_vapic = data;
- mark_page_dirty(vcpu->kvm, gfn);
- if (kvm_lapic_enable_pv_eoi(vcpu, gfn_to_gpa(gfn) | KVM_MSR_ENABLED))
- return 1;
- break;
- }
- case HV_X64_MSR_EOI:
- return kvm_hv_vapic_msr_write(vcpu, APIC_EOI, data);
- case HV_X64_MSR_ICR:
- return kvm_hv_vapic_msr_write(vcpu, APIC_ICR, data);
- case HV_X64_MSR_TPR:
- return kvm_hv_vapic_msr_write(vcpu, APIC_TASKPRI, data);
- default:
- vcpu_unimpl(vcpu, "HYPER-V unimplemented wrmsr: 0x%x "
- "data 0x%llx\n", msr, data);
- return 1;
- }
-
- return 0;
-}
-
static int kvm_pv_enable_async_pf(struct kvm_vcpu *vcpu, u64 data)
{
gpa_t gpa = data & ~0x3f;
@@ -2212,15 +2087,7 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
*/
break;
case HV_X64_MSR_GUEST_OS_ID ... HV_X64_MSR_SINT15:
- if (kvm_hv_msr_partition_wide(msr)) {
- int r;
- mutex_lock(&vcpu->kvm->lock);
- r = set_msr_hyperv_pw(vcpu, msr, data);
- mutex_unlock(&vcpu->kvm->lock);
- return r;
- } else
- return set_msr_hyperv(vcpu, msr, data);
- break;
+ return kvm_hv_set_msr_common(vcpu, msr, data);
case MSR_IA32_BBL_CR_CTL3:
/* Drop writes to this legacy MSR -- see rdmsr
* counterpart for further detail.
@@ -2338,68 +2205,6 @@ static int get_msr_mce(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
return 0;
}
-static int get_msr_hyperv_pw(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
-{
- u64 data = 0;
- struct kvm *kvm = vcpu->kvm;
-
- switch (msr) {
- case HV_X64_MSR_GUEST_OS_ID:
- data = kvm->arch.hv_guest_os_id;
- break;
- case HV_X64_MSR_HYPERCALL:
- data = kvm->arch.hv_hypercall;
- break;
- case HV_X64_MSR_TIME_REF_COUNT: {
- data =
- div_u64(get_kernel_ns() + kvm->arch.kvmclock_offset, 100);
- break;
- }
- case HV_X64_MSR_REFERENCE_TSC:
- data = kvm->arch.hv_tsc_page;
- break;
- default:
- vcpu_unimpl(vcpu, "Hyper-V unhandled rdmsr: 0x%x\n", msr);
- return 1;
- }
-
- *pdata = data;
- return 0;
-}
-
-static int get_msr_hyperv(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
-{
- u64 data = 0;
-
- switch (msr) {
- case HV_X64_MSR_VP_INDEX: {
- int r;
- struct kvm_vcpu *v;
- kvm_for_each_vcpu(r, v, vcpu->kvm) {
- if (v == vcpu) {
- data = r;
- break;
- }
- }
- break;
- }
- case HV_X64_MSR_EOI:
- return kvm_hv_vapic_msr_read(vcpu, APIC_EOI, pdata);
- case HV_X64_MSR_ICR:
- return kvm_hv_vapic_msr_read(vcpu, APIC_ICR, pdata);
- case HV_X64_MSR_TPR:
- return kvm_hv_vapic_msr_read(vcpu, APIC_TASKPRI, pdata);
- case HV_X64_MSR_APIC_ASSIST_PAGE:
- data = vcpu->arch.hv_vapic;
- break;
- default:
- vcpu_unimpl(vcpu, "Hyper-V unhandled rdmsr: 0x%x\n", msr);
- return 1;
- }
- *pdata = data;
- return 0;
-}
-
int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
{
u64 data;
@@ -2517,15 +2322,7 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
data = 0x20000000;
break;
case HV_X64_MSR_GUEST_OS_ID ... HV_X64_MSR_SINT15:
- if (kvm_hv_msr_partition_wide(msr)) {
- int r;
- mutex_lock(&vcpu->kvm->lock);
- r = get_msr_hyperv_pw(vcpu, msr, pdata);
- mutex_unlock(&vcpu->kvm->lock);
- return r;
- } else
- return get_msr_hyperv(vcpu, msr, pdata);
- break;
+ return kvm_hv_get_msr_common(vcpu, msr, pdata);
case MSR_IA32_BBL_CR_CTL3:
/* This legacy MSR exists but isn't fully documented in current
* silicon. It is however accessed by winxp in very narrow
@@ -5666,68 +5463,6 @@ int kvm_emulate_halt(struct kvm_vcpu *vcpu)
}
EXPORT_SYMBOL_GPL(kvm_emulate_halt);
-int kvm_hv_hypercall(struct kvm_vcpu *vcpu)
-{
- u64 param, ingpa, outgpa, ret;
- uint16_t code, rep_idx, rep_cnt, res = HV_STATUS_SUCCESS, rep_done = 0;
- bool fast, longmode;
- int cs_db, cs_l;
-
- /*
- * hypercall generates UD from non zero cpl and real mode
- * per HYPER-V spec
- */
- if (kvm_x86_ops->get_cpl(vcpu) != 0 || !is_protmode(vcpu)) {
- kvm_queue_exception(vcpu, UD_VECTOR);
- return 0;
- }
-
- kvm_x86_ops->get_cs_db_l_bits(vcpu, &cs_db, &cs_l);
- longmode = is_long_mode(vcpu) && cs_l == 1;
-
- if (!longmode) {
- param = ((u64)kvm_register_read(vcpu, VCPU_REGS_RDX) << 32) |
- (kvm_register_read(vcpu, VCPU_REGS_RAX) & 0xffffffff);
- ingpa = ((u64)kvm_register_read(vcpu, VCPU_REGS_RBX) << 32) |
- (kvm_register_read(vcpu, VCPU_REGS_RCX) & 0xffffffff);
- outgpa = ((u64)kvm_register_read(vcpu, VCPU_REGS_RDI) << 32) |
- (kvm_register_read(vcpu, VCPU_REGS_RSI) & 0xffffffff);
- }
-#ifdef CONFIG_X86_64
- else {
- param = kvm_register_read(vcpu, VCPU_REGS_RCX);
- ingpa = kvm_register_read(vcpu, VCPU_REGS_RDX);
- outgpa = kvm_register_read(vcpu, VCPU_REGS_R8);
- }
-#endif
-
- code = param & 0xffff;
- fast = (param >> 16) & 0x1;
- rep_cnt = (param >> 32) & 0xfff;
- rep_idx = (param >> 48) & 0xfff;
-
- trace_kvm_hv_hypercall(code, fast, rep_cnt, rep_idx, ingpa, outgpa);
-
- switch (code) {
- case HV_X64_HV_NOTIFY_LONG_SPIN_WAIT:
- kvm_vcpu_on_spin(vcpu);
- break;
- default:
- res = HV_STATUS_INVALID_HYPERCALL_CODE;
- break;
- }
-
- ret = res | (((u64)rep_done & 0xfff) << 32);
- if (longmode) {
- kvm_register_write(vcpu, VCPU_REGS_RAX, ret);
- } else {
- kvm_register_write(vcpu, VCPU_REGS_RDX, ret >> 32);
- kvm_register_write(vcpu, VCPU_REGS_RAX, ret & 0xffffffff);
- }
-
- return 1;
-}
-
/*
* kvm_pv_kick_cpu_op: Kick a vcpu.
*
diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h
index 8c97bac..9e24eb5 100644
--- a/arch/x86/kvm/x86.h
+++ b/arch/x86/kvm/x86.h
@@ -108,6 +108,15 @@ static inline bool vcpu_match_mmio_gpa(struct kvm_vcpu *vcpu, gpa_t gpa)
return false;
}
+static inline u64 get_kernel_ns(void)
+{
+ struct timespec ts;
+
+ ktime_get_ts(&ts);
+ monotonic_to_bootbased(&ts);
+ return timespec_to_ns(&ts);
+}
+
void kvm_before_handle_nmi(struct kvm_vcpu *vcpu);
void kvm_after_handle_nmi(struct kvm_vcpu *vcpu);
int kvm_inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq, int inc_eip);
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