[PATCH v5 3/7] nSVM: rename nested_load_control_from_vmcb12 in nested_copy_vmcb_control_to_cache
From: Emanuele Giuseppe Esposito
Date: Wed Nov 03 2021 - 10:06:43 EST
Following the same naming convention of the previous patch,
rename nested_load_control_from_vmcb12.
In addition, inline copy_vmcb_control_area as it is only called
by this function.
_nested_copy_vmcb_control_to_cache() works with vmcb_control_area
parameters and it will be useful in next patches, when we use
local variables instead of svm cached state.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@xxxxxxxxxx>
---
arch/x86/kvm/svm/nested.c | 80 +++++++++++++++++++--------------------
arch/x86/kvm/svm/svm.c | 2 +-
arch/x86/kvm/svm/svm.h | 4 +-
3 files changed, 43 insertions(+), 43 deletions(-)
diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
index ea64fea371c8..162b338a6c74 100644
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -163,37 +163,6 @@ void recalc_intercepts(struct vcpu_svm *svm)
vmcb_set_intercept(c, INTERCEPT_VMSAVE);
}
-static void copy_vmcb_control_area(struct vmcb_control_area *dst,
- struct vmcb_control_area *from)
-{
- unsigned int i;
-
- for (i = 0; i < MAX_INTERCEPT; i++)
- dst->intercepts[i] = from->intercepts[i];
-
- dst->iopm_base_pa = from->iopm_base_pa;
- dst->msrpm_base_pa = from->msrpm_base_pa;
- dst->tsc_offset = from->tsc_offset;
- /* asid not copied, it is handled manually for svm->vmcb. */
- dst->tlb_ctl = from->tlb_ctl;
- dst->int_ctl = from->int_ctl;
- dst->int_vector = from->int_vector;
- dst->int_state = from->int_state;
- dst->exit_code = from->exit_code;
- dst->exit_code_hi = from->exit_code_hi;
- dst->exit_info_1 = from->exit_info_1;
- dst->exit_info_2 = from->exit_info_2;
- dst->exit_int_info = from->exit_int_info;
- dst->exit_int_info_err = from->exit_int_info_err;
- dst->nested_ctl = from->nested_ctl;
- dst->event_inj = from->event_inj;
- dst->event_inj_err = from->event_inj_err;
- dst->nested_cr3 = from->nested_cr3;
- dst->virt_ext = from->virt_ext;
- dst->pause_filter_count = from->pause_filter_count;
- dst->pause_filter_thresh = from->pause_filter_thresh;
-}
-
static bool nested_svm_vmrun_msrpm(struct vcpu_svm *svm)
{
/*
@@ -317,15 +286,46 @@ static bool nested_vmcb_valid_sregs(struct kvm_vcpu *vcpu,
return true;
}
-void nested_load_control_from_vmcb12(struct vcpu_svm *svm,
- struct vmcb_control_area *control)
+static
+void _nested_copy_vmcb_control_to_cache(struct vmcb_control_area *to,
+ struct vmcb_control_area *from)
{
- copy_vmcb_control_area(&svm->nested.ctl, control);
+ unsigned int i;
+
+ for (i = 0; i < MAX_INTERCEPT; i++)
+ to->intercepts[i] = from->intercepts[i];
+
+ to->iopm_base_pa = from->iopm_base_pa;
+ to->msrpm_base_pa = from->msrpm_base_pa;
+ to->tsc_offset = from->tsc_offset;
+ to->tlb_ctl = from->tlb_ctl;
+ to->int_ctl = from->int_ctl;
+ to->int_vector = from->int_vector;
+ to->int_state = from->int_state;
+ to->exit_code = from->exit_code;
+ to->exit_code_hi = from->exit_code_hi;
+ to->exit_info_1 = from->exit_info_1;
+ to->exit_info_2 = from->exit_info_2;
+ to->exit_int_info = from->exit_int_info;
+ to->exit_int_info_err = from->exit_int_info_err;
+ to->nested_ctl = from->nested_ctl;
+ to->event_inj = from->event_inj;
+ to->event_inj_err = from->event_inj_err;
+ to->nested_cr3 = from->nested_cr3;
+ to->virt_ext = from->virt_ext;
+ to->pause_filter_count = from->pause_filter_count;
+ to->pause_filter_thresh = from->pause_filter_thresh;
+
+ /* Copy asid here because nested_vmcb_check_controls will check it. */
+ to->asid = from->asid;
+ to->msrpm_base_pa &= ~0x0fffULL;
+ to->iopm_base_pa &= ~0x0fffULL;
+}
- /* Copy it here because nested_svm_check_controls will check it. */
- svm->nested.ctl.asid = control->asid;
- svm->nested.ctl.msrpm_base_pa &= ~0x0fffULL;
- svm->nested.ctl.iopm_base_pa &= ~0x0fffULL;
+void nested_copy_vmcb_control_to_cache(struct vcpu_svm *svm,
+ struct vmcb_control_area *control)
+{
+ _nested_copy_vmcb_control_to_cache(&svm->nested.ctl, control);
}
static void _nested_copy_vmcb_save_to_cache(struct vmcb_save_area_cached *to,
@@ -691,7 +691,7 @@ int nested_svm_vmrun(struct kvm_vcpu *vcpu)
if (WARN_ON_ONCE(!svm->nested.initialized))
return -EINVAL;
- nested_load_control_from_vmcb12(svm, &vmcb12->control);
+ nested_copy_vmcb_control_to_cache(svm, &vmcb12->control);
nested_copy_vmcb_save_to_cache(svm, &vmcb12->save);
if (!nested_vmcb_valid_sregs(vcpu, &vmcb12->save) ||
@@ -1438,7 +1438,7 @@ static int svm_set_nested_state(struct kvm_vcpu *vcpu,
svm->nested.vmcb12_gpa = kvm_state->hdr.svm.vmcb_pa;
svm_copy_vmrun_state(&svm->vmcb01.ptr->save, save);
- nested_load_control_from_vmcb12(svm, ctl);
+ nested_copy_vmcb_control_to_cache(svm, ctl);
svm_switch_vmcb(svm, &svm->nested.vmcb02);
nested_vmcb02_prepare_control(svm);
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 6e5c2671e823..74d6db9017ea 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -4437,7 +4437,7 @@ static int svm_leave_smm(struct kvm_vcpu *vcpu, const char *smstate)
*/
vmcb12 = map.hva;
- nested_load_control_from_vmcb12(svm, &vmcb12->control);
+ nested_copy_vmcb_control_to_cache(svm, &vmcb12->control);
nested_copy_vmcb_save_to_cache(svm, &vmcb12->save);
ret = enter_svm_guest_mode(vcpu, vmcb12_gpa, vmcb12, false);
diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h
index 0897551d8868..a0609fe2e68c 100644
--- a/arch/x86/kvm/svm/svm.h
+++ b/arch/x86/kvm/svm/svm.h
@@ -502,8 +502,8 @@ int nested_svm_check_exception(struct vcpu_svm *svm, unsigned nr,
int nested_svm_exit_special(struct vcpu_svm *svm);
void nested_svm_update_tsc_ratio_msr(struct kvm_vcpu *vcpu);
void svm_write_tsc_multiplier(struct kvm_vcpu *vcpu, u64 multiplier);
-void nested_load_control_from_vmcb12(struct vcpu_svm *svm,
- struct vmcb_control_area *control);
+void nested_copy_vmcb_control_to_cache(struct vcpu_svm *svm,
+ struct vmcb_control_area *control);
void nested_copy_vmcb_save_to_cache(struct vcpu_svm *svm,
struct vmcb_save_area *save);
void nested_sync_control_from_vmcb02(struct vcpu_svm *svm);
--
2.27.0