[PATCH v3 3/8] nSVM: rename nested_load_control_from_vmcb12 in nested_copy_vmcb_control_to_cache

Emanuele Giuseppe Esposito
2021-10-11T14:37:35Z

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.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
---
arch/x86/kvm/svm/nested.c | 67 ++++++++++++++++++---------------------
arch/x86/kvm/svm/svm.c | 2 +-
arch/x86/kvm/svm/svm.h | 2 +-
3 files changed, 32 insertions(+), 39 deletions(-)

diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
index c4959da8aec0..f6030a202bc5 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)
{
/*
@@ -302,12 +271,36 @@ 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)
+void nested_copy_vmcb_control_to_cache(struct vcpu_svm *svm,
+ struct vmcb_control_area *control)
{
- copy_vmcb_control_area(&svm->nested.ctl, control);
+ unsigned int i;

- /* Copy it here because nested_svm_check_controls will check it. */
+ for (i = 0; i < MAX_INTERCEPT; i++)
+ svm->nested.ctl.intercepts[i] = control->intercepts[i];
+
+ svm->nested.ctl.iopm_base_pa = control->iopm_base_pa;
+ svm->nested.ctl.msrpm_base_pa = control->msrpm_base_pa;
+ svm->nested.ctl.tsc_offset = control->tsc_offset;
+ svm->nested.ctl.tlb_ctl = control->tlb_ctl;
+ svm->nested.ctl.int_ctl = control->int_ctl;
+ svm->nested.ctl.int_vector = control->int_vector;
+ svm->nested.ctl.int_state = control->int_state;
+ svm->nested.ctl.exit_code = control->exit_code;
+ svm->nested.ctl.exit_code_hi = control->exit_code_hi;
+ svm->nested.ctl.exit_info_1 = control->exit_info_1;
+ svm->nested.ctl.exit_info_2 = control->exit_info_2;
+ svm->nested.ctl.exit_int_info = control->exit_int_info;
+ svm->nested.ctl.exit_int_info_err = control->exit_int_info_err;
+ svm->nested.ctl.nested_ctl = control->nested_ctl;
+ svm->nested.ctl.event_inj = control->event_inj;
+ svm->nested.ctl.event_inj_err = control->event_inj_err;
+ svm->nested.ctl.nested_cr3 = control->nested_cr3;
+ svm->nested.ctl.virt_ext = control->virt_ext;
+ svm->nested.ctl.pause_filter_count = control->pause_filter_count;
+ svm->nested.ctl.pause_filter_thresh = control->pause_filter_thresh;
+
+ /* Copy asid here because nested_vmcb_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;
@@ -662,7 +655,7 @@ 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) ||
@@ -1401,7 +1394,7 @@ 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);
nested_copy_vmcb_save_to_cache(svm, save);

svm_switch_vmcb(svm, &svm->nested.vmcb02);
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index bf171f5f6158..1b6d25c6e0ae 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -4385,7 +4385,7 @@ 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);
diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h
index f0195bc263e9..3c950aeca646 100644
--- a/arch/x86/kvm/svm/svm.h
+++ b/arch/x86/kvm/svm/svm.h
@@ -496,7 +496,7 @@ int nested_svm_check_permissions(struct kvm_vcpu *vcpu);
int nested_svm_check_exception(struct vcpu_svm *svm, unsigned nr,
bool has_error_code, u32 error_code);
int nested_svm_exit_special(struct vcpu_svm *svm);
-void nested_load_control_from_vmcb12(struct vcpu_svm *svm,
+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);
--
2.27.0