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KVM: nSVM: rename nested_load_control_from_vmcb12 in nested_copy_vmcb_control_to_cache

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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@redhat.com>
Message-Id: <20211103140527.752797-4-eesposit@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Emanuele Giuseppe Esposito 2021-11-03 10:05:23 -04:00 committed by Paolo Bonzini
parent f2740a8d85
commit 7907160dbf
3 changed files with 43 additions and 43 deletions
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80
arch/x86/kvm/svm/nested.c
View File

@ -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;
/* 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;
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;
}
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) ||
@ -1436,7 +1436,7 @@ 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);

2
arch/x86/kvm/svm/svm.c
View File

@ -4434,7 +4434,7 @@ 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);

4
arch/x86/kvm/svm/svm.h
View File

@ -509,8 +509,8 @@ 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);