[PATCH v3 3/9] KVM: VMX: Move hardware_setup() definition below vmx_x86_ops
From: Sean Christopherson
Date: Sat Mar 21 2020 - 16:26:56 EST
Move VMX's hardware_setup() below its vmx_x86_ops definition so that a
future patch can refactor hardware_setup() to modify vmx_x86_ops
directly instead of indirectly modifying the ops via the global
kvm_x86_ops.
No functional change intended.
Signed-off-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
---
arch/x86/kvm/vmx/vmx.c | 346 ++++++++++++++++++++---------------------
1 file changed, 173 insertions(+), 173 deletions(-)
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index ffcdcc86f5b7..82dab775d520 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -7652,179 +7652,6 @@ static bool vmx_apic_init_signal_blocked(struct kvm_vcpu *vcpu)
return to_vmx(vcpu)->nested.vmxon;
}
-static __init int hardware_setup(void)
-{
- unsigned long host_bndcfgs;
- struct desc_ptr dt;
- int r, i, ept_lpage_level;
-
- store_idt(&dt);
- host_idt_base = dt.address;
-
- for (i = 0; i < ARRAY_SIZE(vmx_msr_index); ++i)
- kvm_define_shared_msr(i, vmx_msr_index[i]);
-
- if (setup_vmcs_config(&vmcs_config, &vmx_capability) < 0)
- return -EIO;
-
- if (boot_cpu_has(X86_FEATURE_NX))
- kvm_enable_efer_bits(EFER_NX);
-
- if (boot_cpu_has(X86_FEATURE_MPX)) {
- rdmsrl(MSR_IA32_BNDCFGS, host_bndcfgs);
- WARN_ONCE(host_bndcfgs, "KVM: BNDCFGS in host will be lost");
- }
-
- if (!cpu_has_vmx_mpx())
- supported_xcr0 &= ~(XFEATURE_MASK_BNDREGS |
- XFEATURE_MASK_BNDCSR);
-
- if (!cpu_has_vmx_vpid() || !cpu_has_vmx_invvpid() ||
- !(cpu_has_vmx_invvpid_single() || cpu_has_vmx_invvpid_global()))
- enable_vpid = 0;
-
- if (!cpu_has_vmx_ept() ||
- !cpu_has_vmx_ept_4levels() ||
- !cpu_has_vmx_ept_mt_wb() ||
- !cpu_has_vmx_invept_global())
- enable_ept = 0;
-
- if (!cpu_has_vmx_ept_ad_bits() || !enable_ept)
- enable_ept_ad_bits = 0;
-
- if (!cpu_has_vmx_unrestricted_guest() || !enable_ept)
- enable_unrestricted_guest = 0;
-
- if (!cpu_has_vmx_flexpriority())
- flexpriority_enabled = 0;
-
- if (!cpu_has_virtual_nmis())
- enable_vnmi = 0;
-
- /*
- * set_apic_access_page_addr() is used to reload apic access
- * page upon invalidation. No need to do anything if not
- * using the APIC_ACCESS_ADDR VMCS field.
- */
- if (!flexpriority_enabled)
- kvm_x86_ops->set_apic_access_page_addr = NULL;
-
- if (!cpu_has_vmx_tpr_shadow())
- kvm_x86_ops->update_cr8_intercept = NULL;
-
-#if IS_ENABLED(CONFIG_HYPERV)
- if (ms_hyperv.nested_features & HV_X64_NESTED_GUEST_MAPPING_FLUSH
- && enable_ept) {
- kvm_x86_ops->tlb_remote_flush = hv_remote_flush_tlb;
- kvm_x86_ops->tlb_remote_flush_with_range =
- hv_remote_flush_tlb_with_range;
- }
-#endif
-
- if (!cpu_has_vmx_ple()) {
- ple_gap = 0;
- ple_window = 0;
- ple_window_grow = 0;
- ple_window_max = 0;
- ple_window_shrink = 0;
- }
-
- if (!cpu_has_vmx_apicv()) {
- enable_apicv = 0;
- kvm_x86_ops->sync_pir_to_irr = NULL;
- }
-
- if (cpu_has_vmx_tsc_scaling()) {
- kvm_has_tsc_control = true;
- kvm_max_tsc_scaling_ratio = KVM_VMX_TSC_MULTIPLIER_MAX;
- kvm_tsc_scaling_ratio_frac_bits = 48;
- }
-
- set_bit(0, vmx_vpid_bitmap); /* 0 is reserved for host */
-
- if (enable_ept)
- vmx_enable_tdp();
-
- if (!enable_ept)
- ept_lpage_level = 0;
- else if (cpu_has_vmx_ept_1g_page())
- ept_lpage_level = PT_PDPE_LEVEL;
- else if (cpu_has_vmx_ept_2m_page())
- ept_lpage_level = PT_DIRECTORY_LEVEL;
- else
- ept_lpage_level = PT_PAGE_TABLE_LEVEL;
- kvm_configure_mmu(enable_ept, ept_lpage_level);
-
- /*
- * Only enable PML when hardware supports PML feature, and both EPT
- * and EPT A/D bit features are enabled -- PML depends on them to work.
- */
- if (!enable_ept || !enable_ept_ad_bits || !cpu_has_vmx_pml())
- enable_pml = 0;
-
- if (!enable_pml) {
- kvm_x86_ops->slot_enable_log_dirty = NULL;
- kvm_x86_ops->slot_disable_log_dirty = NULL;
- kvm_x86_ops->flush_log_dirty = NULL;
- kvm_x86_ops->enable_log_dirty_pt_masked = NULL;
- }
-
- if (!cpu_has_vmx_preemption_timer())
- enable_preemption_timer = false;
-
- if (enable_preemption_timer) {
- u64 use_timer_freq = 5000ULL * 1000 * 1000;
- u64 vmx_msr;
-
- rdmsrl(MSR_IA32_VMX_MISC, vmx_msr);
- cpu_preemption_timer_multi =
- vmx_msr & VMX_MISC_PREEMPTION_TIMER_RATE_MASK;
-
- if (tsc_khz)
- use_timer_freq = (u64)tsc_khz * 1000;
- use_timer_freq >>= cpu_preemption_timer_multi;
-
- /*
- * KVM "disables" the preemption timer by setting it to its max
- * value. Don't use the timer if it might cause spurious exits
- * at a rate faster than 0.1 Hz (of uninterrupted guest time).
- */
- if (use_timer_freq > 0xffffffffu / 10)
- enable_preemption_timer = false;
- }
-
- if (!enable_preemption_timer) {
- kvm_x86_ops->set_hv_timer = NULL;
- kvm_x86_ops->cancel_hv_timer = NULL;
- kvm_x86_ops->request_immediate_exit = __kvm_request_immediate_exit;
- }
-
- kvm_set_posted_intr_wakeup_handler(wakeup_handler);
-
- kvm_mce_cap_supported |= MCG_LMCE_P;
-
- if (pt_mode != PT_MODE_SYSTEM && pt_mode != PT_MODE_HOST_GUEST)
- return -EINVAL;
- if (!enable_ept || !cpu_has_vmx_intel_pt())
- pt_mode = PT_MODE_SYSTEM;
-
- if (nested) {
- nested_vmx_setup_ctls_msrs(&vmcs_config.nested,
- vmx_capability.ept);
-
- r = nested_vmx_hardware_setup(kvm_vmx_exit_handlers);
- if (r)
- return r;
- }
-
- vmx_set_cpu_caps();
-
- r = alloc_kvm_area();
- if (r)
- nested_vmx_hardware_unsetup();
- return r;
-}
-
static __exit void hardware_unsetup(void)
{
if (nested)
@@ -7978,6 +7805,179 @@ static struct kvm_x86_ops vmx_x86_ops __ro_after_init = {
.apic_init_signal_blocked = vmx_apic_init_signal_blocked,
};
+static __init int hardware_setup(void)
+{
+ unsigned long host_bndcfgs;
+ struct desc_ptr dt;
+ int r, i, ept_lpage_level;
+
+ store_idt(&dt);
+ host_idt_base = dt.address;
+
+ for (i = 0; i < ARRAY_SIZE(vmx_msr_index); ++i)
+ kvm_define_shared_msr(i, vmx_msr_index[i]);
+
+ if (setup_vmcs_config(&vmcs_config, &vmx_capability) < 0)
+ return -EIO;
+
+ if (boot_cpu_has(X86_FEATURE_NX))
+ kvm_enable_efer_bits(EFER_NX);
+
+ if (boot_cpu_has(X86_FEATURE_MPX)) {
+ rdmsrl(MSR_IA32_BNDCFGS, host_bndcfgs);
+ WARN_ONCE(host_bndcfgs, "KVM: BNDCFGS in host will be lost");
+ }
+
+ if (!cpu_has_vmx_mpx())
+ supported_xcr0 &= ~(XFEATURE_MASK_BNDREGS |
+ XFEATURE_MASK_BNDCSR);
+
+ if (!cpu_has_vmx_vpid() || !cpu_has_vmx_invvpid() ||
+ !(cpu_has_vmx_invvpid_single() || cpu_has_vmx_invvpid_global()))
+ enable_vpid = 0;
+
+ if (!cpu_has_vmx_ept() ||
+ !cpu_has_vmx_ept_4levels() ||
+ !cpu_has_vmx_ept_mt_wb() ||
+ !cpu_has_vmx_invept_global())
+ enable_ept = 0;
+
+ if (!cpu_has_vmx_ept_ad_bits() || !enable_ept)
+ enable_ept_ad_bits = 0;
+
+ if (!cpu_has_vmx_unrestricted_guest() || !enable_ept)
+ enable_unrestricted_guest = 0;
+
+ if (!cpu_has_vmx_flexpriority())
+ flexpriority_enabled = 0;
+
+ if (!cpu_has_virtual_nmis())
+ enable_vnmi = 0;
+
+ /*
+ * set_apic_access_page_addr() is used to reload apic access
+ * page upon invalidation. No need to do anything if not
+ * using the APIC_ACCESS_ADDR VMCS field.
+ */
+ if (!flexpriority_enabled)
+ kvm_x86_ops->set_apic_access_page_addr = NULL;
+
+ if (!cpu_has_vmx_tpr_shadow())
+ kvm_x86_ops->update_cr8_intercept = NULL;
+
+#if IS_ENABLED(CONFIG_HYPERV)
+ if (ms_hyperv.nested_features & HV_X64_NESTED_GUEST_MAPPING_FLUSH
+ && enable_ept) {
+ kvm_x86_ops->tlb_remote_flush = hv_remote_flush_tlb;
+ kvm_x86_ops->tlb_remote_flush_with_range =
+ hv_remote_flush_tlb_with_range;
+ }
+#endif
+
+ if (!cpu_has_vmx_ple()) {
+ ple_gap = 0;
+ ple_window = 0;
+ ple_window_grow = 0;
+ ple_window_max = 0;
+ ple_window_shrink = 0;
+ }
+
+ if (!cpu_has_vmx_apicv()) {
+ enable_apicv = 0;
+ kvm_x86_ops->sync_pir_to_irr = NULL;
+ }
+
+ if (cpu_has_vmx_tsc_scaling()) {
+ kvm_has_tsc_control = true;
+ kvm_max_tsc_scaling_ratio = KVM_VMX_TSC_MULTIPLIER_MAX;
+ kvm_tsc_scaling_ratio_frac_bits = 48;
+ }
+
+ set_bit(0, vmx_vpid_bitmap); /* 0 is reserved for host */
+
+ if (enable_ept)
+ vmx_enable_tdp();
+
+ if (!enable_ept)
+ ept_lpage_level = 0;
+ else if (cpu_has_vmx_ept_1g_page())
+ ept_lpage_level = PT_PDPE_LEVEL;
+ else if (cpu_has_vmx_ept_2m_page())
+ ept_lpage_level = PT_DIRECTORY_LEVEL;
+ else
+ ept_lpage_level = PT_PAGE_TABLE_LEVEL;
+ kvm_configure_mmu(enable_ept, ept_lpage_level);
+
+ /*
+ * Only enable PML when hardware supports PML feature, and both EPT
+ * and EPT A/D bit features are enabled -- PML depends on them to work.
+ */
+ if (!enable_ept || !enable_ept_ad_bits || !cpu_has_vmx_pml())
+ enable_pml = 0;
+
+ if (!enable_pml) {
+ kvm_x86_ops->slot_enable_log_dirty = NULL;
+ kvm_x86_ops->slot_disable_log_dirty = NULL;
+ kvm_x86_ops->flush_log_dirty = NULL;
+ kvm_x86_ops->enable_log_dirty_pt_masked = NULL;
+ }
+
+ if (!cpu_has_vmx_preemption_timer())
+ enable_preemption_timer = false;
+
+ if (enable_preemption_timer) {
+ u64 use_timer_freq = 5000ULL * 1000 * 1000;
+ u64 vmx_msr;
+
+ rdmsrl(MSR_IA32_VMX_MISC, vmx_msr);
+ cpu_preemption_timer_multi =
+ vmx_msr & VMX_MISC_PREEMPTION_TIMER_RATE_MASK;
+
+ if (tsc_khz)
+ use_timer_freq = (u64)tsc_khz * 1000;
+ use_timer_freq >>= cpu_preemption_timer_multi;
+
+ /*
+ * KVM "disables" the preemption timer by setting it to its max
+ * value. Don't use the timer if it might cause spurious exits
+ * at a rate faster than 0.1 Hz (of uninterrupted guest time).
+ */
+ if (use_timer_freq > 0xffffffffu / 10)
+ enable_preemption_timer = false;
+ }
+
+ if (!enable_preemption_timer) {
+ kvm_x86_ops->set_hv_timer = NULL;
+ kvm_x86_ops->cancel_hv_timer = NULL;
+ kvm_x86_ops->request_immediate_exit = __kvm_request_immediate_exit;
+ }
+
+ kvm_set_posted_intr_wakeup_handler(wakeup_handler);
+
+ kvm_mce_cap_supported |= MCG_LMCE_P;
+
+ if (pt_mode != PT_MODE_SYSTEM && pt_mode != PT_MODE_HOST_GUEST)
+ return -EINVAL;
+ if (!enable_ept || !cpu_has_vmx_intel_pt())
+ pt_mode = PT_MODE_SYSTEM;
+
+ if (nested) {
+ nested_vmx_setup_ctls_msrs(&vmcs_config.nested,
+ vmx_capability.ept);
+
+ r = nested_vmx_hardware_setup(kvm_vmx_exit_handlers);
+ if (r)
+ return r;
+ }
+
+ vmx_set_cpu_caps();
+
+ r = alloc_kvm_area();
+ if (r)
+ nested_vmx_hardware_unsetup();
+ return r;
+}
+
static struct kvm_x86_init_ops vmx_init_ops __initdata = {
.cpu_has_kvm_support = cpu_has_kvm_support,
.disabled_by_bios = vmx_disabled_by_bios,
--
2.24.1