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Subject[PATCH 03/15] KVM: MTRR: remove mtrr_state.have_fixed
Date
vMTRR does not depend on any host MTRR feature and fixed MTRRs have always
been implemented, so drop this field

Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
---
arch/x86/include/asm/kvm_host.h | 9 ++++++++-
arch/x86/kvm/mtrr.c | 7 +++----
arch/x86/kvm/x86.c | 1 -
3 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 2353392..65de1b3 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -344,6 +344,13 @@ enum {
KVM_DEBUGREG_RELOAD = 4,
};

+struct kvm_mtrr {
+ struct mtrr_var_range var_ranges[MTRR_MAX_VAR_RANGES];
+ mtrr_type fixed_ranges[KVM_NR_FIXED_MTRR_REGION];
+ unsigned char enabled;
+ mtrr_type def_type;
+};
+
struct kvm_vcpu_arch {
/*
* rip and regs accesses must go through
@@ -472,7 +479,7 @@ struct kvm_vcpu_arch {
unsigned nmi_pending; /* NMI queued after currently running handler */
bool nmi_injected; /* Trying to inject an NMI this entry */

- struct mtrr_state_type mtrr_state;
+ struct kvm_mtrr mtrr_state;
u64 pat;

unsigned switch_db_regs;
diff --git a/arch/x86/kvm/mtrr.c b/arch/x86/kvm/mtrr.c
index 32664ec..562341b 100644
--- a/arch/x86/kvm/mtrr.c
+++ b/arch/x86/kvm/mtrr.c
@@ -104,7 +104,7 @@ EXPORT_SYMBOL_GPL(kvm_mtrr_valid);

static void update_mtrr(struct kvm_vcpu *vcpu, u32 msr)
{
- struct mtrr_state_type *mtrr_state = &vcpu->arch.mtrr_state;
+ struct kvm_mtrr *mtrr_state = &vcpu->arch.mtrr_state;
unsigned char mtrr_enabled = mtrr_state->enabled;
gfn_t start, end, mask;
int index;
@@ -248,7 +248,7 @@ int kvm_mtrr_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
* The function is based on mtrr_type_lookup() in
* arch/x86/kernel/cpu/mtrr/generic.c
*/
-static int get_mtrr_type(struct mtrr_state_type *mtrr_state,
+static int get_mtrr_type(struct kvm_mtrr *mtrr_state,
u64 start, u64 end)
{
u64 base, mask;
@@ -263,8 +263,7 @@ static int get_mtrr_type(struct mtrr_state_type *mtrr_state,
end--;

/* Look in fixed ranges. Just return the type as per start */
- if (mtrr_state->have_fixed && (mtrr_state->enabled & 0x1) &&
- (start < 0x100000)) {
+ if ((mtrr_state->enabled & 0x1) && (start < 0x100000)) {
int idx;

if (start < 0x80000) {
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 92db294..64c2891 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -6985,7 +6985,6 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
{
int r;

- vcpu->arch.mtrr_state.have_fixed = 1;
r = vcpu_load(vcpu);
if (r)
return r;
--
2.1.0


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