lkml.org 
[lkml]   [2010]   [Nov]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/3] KVM: SVM: Make Use of the generic guest-mode functions
Date
This patch replaces the is_nested logic in the SVM module
with the generic notion of guest-mode.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
arch/x86/kvm/svm.c | 44 +++++++++++++++++++++-----------------------
1 files changed, 21 insertions(+), 23 deletions(-)
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 2fd2f4d..bff391e 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -192,11 +192,6 @@ static inline struct vcpu_svm *to_svm(struct kvm_vcpu *vcpu)
return container_of(vcpu, struct vcpu_svm, vcpu);
}

-static inline bool is_nested(struct vcpu_svm *svm)
-{
- return svm->nested.vmcb;
-}
-
static inline void enable_gif(struct vcpu_svm *svm)
{
svm->vcpu.arch.hflags |= HF_GIF_MASK;
@@ -727,7 +722,7 @@ static void svm_write_tsc_offset(struct kvm_vcpu *vcpu, u64 offset)
struct vcpu_svm *svm = to_svm(vcpu);
u64 g_tsc_offset = 0;

- if (is_nested(svm)) {
+ if (is_guest_mode(vcpu)) {
g_tsc_offset = svm->vmcb->control.tsc_offset -
svm->nested.hsave->control.tsc_offset;
svm->nested.hsave->control.tsc_offset = offset;
@@ -741,7 +736,7 @@ static void svm_adjust_tsc_offset(struct kvm_vcpu *vcpu, s64 adjustment)
struct vcpu_svm *svm = to_svm(vcpu);

svm->vmcb->control.tsc_offset += adjustment;
- if (is_nested(svm))
+ if (is_guest_mode(vcpu))
svm->nested.hsave->control.tsc_offset += adjustment;
}

@@ -1209,7 +1204,7 @@ static void update_cr0_intercept(struct vcpu_svm *svm)
if (gcr0 == *hcr0 && svm->vcpu.fpu_active) {
vmcb->control.intercept_cr_read &= ~INTERCEPT_CR0_MASK;
vmcb->control.intercept_cr_write &= ~INTERCEPT_CR0_MASK;
- if (is_nested(svm)) {
+ if (is_guest_mode(&svm->vcpu)) {
struct vmcb *hsave = svm->nested.hsave;

hsave->control.intercept_cr_read &= ~INTERCEPT_CR0_MASK;
@@ -1220,7 +1215,7 @@ static void update_cr0_intercept(struct vcpu_svm *svm)
} else {
svm->vmcb->control.intercept_cr_read |= INTERCEPT_CR0_MASK;
svm->vmcb->control.intercept_cr_write |= INTERCEPT_CR0_MASK;
- if (is_nested(svm)) {
+ if (is_guest_mode(&svm->vcpu)) {
struct vmcb *hsave = svm->nested.hsave;

hsave->control.intercept_cr_read |= INTERCEPT_CR0_MASK;
@@ -1233,7 +1228,7 @@ static void svm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
{
struct vcpu_svm *svm = to_svm(vcpu);

- if (is_nested(svm)) {
+ if (is_guest_mode(vcpu)) {
/*
* We are here because we run in nested mode, the host kvm
* intercepts cr0 writes but the l1 hypervisor does not.
@@ -1471,7 +1466,7 @@ static void svm_fpu_activate(struct kvm_vcpu *vcpu)
struct vcpu_svm *svm = to_svm(vcpu);
u32 excp;

- if (is_nested(svm)) {
+ if (is_guest_mode(vcpu)) {
u32 h_excp, n_excp;

h_excp = svm->nested.hsave->control.intercept_exceptions;
@@ -1700,7 +1695,7 @@ static int nested_svm_check_exception(struct vcpu_svm *svm, unsigned nr,
{
int vmexit;

- if (!is_nested(svm))
+ if (!is_guest_mode(&svm->vcpu))
return 0;

svm->vmcb->control.exit_code = SVM_EXIT_EXCP_BASE + nr;
@@ -1718,7 +1713,7 @@ static int nested_svm_check_exception(struct vcpu_svm *svm, unsigned nr,
/* This function returns true if it is save to enable the irq window */
static inline bool nested_svm_intr(struct vcpu_svm *svm)
{
- if (!is_nested(svm))
+ if (!is_guest_mode(&svm->vcpu))
return true;

if (!(svm->vcpu.arch.hflags & HF_VINTR_MASK))
@@ -1757,7 +1752,7 @@ static inline bool nested_svm_intr(struct vcpu_svm *svm)
/* This function returns true if it is save to enable the nmi window */
static inline bool nested_svm_nmi(struct vcpu_svm *svm)
{
- if (!is_nested(svm))
+ if (!is_guest_mode(&svm->vcpu))
return true;

if (!(svm->nested.intercept & (1ULL << INTERCEPT_NMI)))
@@ -1994,7 +1989,8 @@ static int nested_svm_vmexit(struct vcpu_svm *svm)
if (!nested_vmcb)
return 1;

- /* Exit nested SVM mode */
+ /* Exit Guest-Mode */
+ leave_guest_mode(&svm->vcpu);
svm->nested.vmcb = 0;

/* Give the current vmcb to the guest */
@@ -2302,7 +2298,9 @@ static bool nested_svm_vmrun(struct vcpu_svm *svm)

nested_svm_unmap(page);

- /* nested_vmcb is our indicator if nested SVM is activated */
+ /* Enter Guest-Mode */
+ enter_guest_mode(&svm->vcpu);
+
svm->nested.vmcb = vmcb_gpa;

enable_gif(svm);
@@ -2588,7 +2586,7 @@ static int svm_get_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 *data)
case MSR_IA32_TSC: {
u64 tsc_offset;

- if (is_nested(svm))
+ if (is_guest_mode(vcpu))
tsc_offset = svm->nested.hsave->control.tsc_offset;
else
tsc_offset = svm->vmcb->control.tsc_offset;
@@ -3002,7 +3000,7 @@ static int handle_exit(struct kvm_vcpu *vcpu)
return 1;
}

- if (is_nested(svm)) {
+ if (is_guest_mode(vcpu)) {
int vmexit;

trace_kvm_nested_vmexit(svm->vmcb->save.rip, exit_code,
@@ -3109,7 +3107,7 @@ static void update_cr8_intercept(struct kvm_vcpu *vcpu, int tpr, int irr)
{
struct vcpu_svm *svm = to_svm(vcpu);

- if (is_nested(svm) && (vcpu->arch.hflags & HF_VINTR_MASK))
+ if (is_guest_mode(vcpu) && (vcpu->arch.hflags & HF_VINTR_MASK))
return;

if (irr == -1)
@@ -3163,7 +3161,7 @@ static int svm_interrupt_allowed(struct kvm_vcpu *vcpu)

ret = !!(vmcb->save.rflags & X86_EFLAGS_IF);

- if (is_nested(svm))
+ if (is_guest_mode(vcpu))
return ret && !(svm->vcpu.arch.hflags & HF_VINTR_MASK);

return ret;
@@ -3220,7 +3218,7 @@ static inline void sync_cr8_to_lapic(struct kvm_vcpu *vcpu)
{
struct vcpu_svm *svm = to_svm(vcpu);

- if (is_nested(svm) && (vcpu->arch.hflags & HF_VINTR_MASK))
+ if (is_guest_mode(vcpu) && (vcpu->arch.hflags & HF_VINTR_MASK))
return;

if (!(svm->vmcb->control.intercept_cr_write & INTERCEPT_CR8_MASK)) {
@@ -3234,7 +3232,7 @@ static inline void sync_lapic_to_cr8(struct kvm_vcpu *vcpu)
struct vcpu_svm *svm = to_svm(vcpu);
u64 cr8;

- if (is_nested(svm) && (vcpu->arch.hflags & HF_VINTR_MASK))
+ if (is_guest_mode(vcpu) && (vcpu->arch.hflags & HF_VINTR_MASK))
return;

cr8 = kvm_get_cr8(vcpu);
@@ -3614,7 +3612,7 @@ static void svm_fpu_deactivate(struct kvm_vcpu *vcpu)
struct vcpu_svm *svm = to_svm(vcpu);

svm->vmcb->control.intercept_exceptions |= 1 << NM_VECTOR;
- if (is_nested(svm))
+ if (is_guest_mode(vcpu))
svm->nested.hsave->control.intercept_exceptions |= 1 << NM_VECTOR;
update_cr0_intercept(svm);
}
--
1.7.1



\
 
 \ /
  Last update: 2010-11-29 17:55    [from the cache]
©2003-2011 Jasper Spaans