forked from Minki/linux
kvm: x86: vmx: move some vmx setting from vmx_init() to hardware_setup()
Instead of vmx_init(), actually it would make reasonable sense to do anything specific to vmx hardware setting in vmx_x86_ops->hardware_setup(). Signed-off-by: Tiejun Chen <tiejun.chen@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Tiejun Chen
Paolo Bonzini
parent
f2c7648d91
commit
34a1cd60d1
@ -5720,8 +5720,108 @@ static void update_ple_window_actual_max(void)
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static __init int hardware_setup(void)
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{
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if (setup_vmcs_config(&vmcs_config) < 0)
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return -EIO;
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int r = -ENOMEM, i, msr;
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rdmsrl_safe(MSR_EFER, &host_efer);
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for (i = 0; i < ARRAY_SIZE(vmx_msr_index); ++i)
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kvm_define_shared_msr(i, vmx_msr_index[i]);
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vmx_io_bitmap_a = (unsigned long *)__get_free_page(GFP_KERNEL);
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if (!vmx_io_bitmap_a)
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return r;
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vmx_io_bitmap_b = (unsigned long *)__get_free_page(GFP_KERNEL);
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if (!vmx_io_bitmap_b)
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goto out;
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vmx_msr_bitmap_legacy = (unsigned long *)__get_free_page(GFP_KERNEL);
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if (!vmx_msr_bitmap_legacy)
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goto out1;
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vmx_msr_bitmap_legacy_x2apic =
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(unsigned long *)__get_free_page(GFP_KERNEL);
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if (!vmx_msr_bitmap_legacy_x2apic)
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goto out2;
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vmx_msr_bitmap_longmode = (unsigned long *)__get_free_page(GFP_KERNEL);
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if (!vmx_msr_bitmap_longmode)
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goto out3;
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vmx_msr_bitmap_longmode_x2apic =
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(unsigned long *)__get_free_page(GFP_KERNEL);
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if (!vmx_msr_bitmap_longmode_x2apic)
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goto out4;
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vmx_vmread_bitmap = (unsigned long *)__get_free_page(GFP_KERNEL);
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if (!vmx_vmread_bitmap)
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goto out5;
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vmx_vmwrite_bitmap = (unsigned long *)__get_free_page(GFP_KERNEL);
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if (!vmx_vmwrite_bitmap)
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goto out6;
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memset(vmx_vmread_bitmap, 0xff, PAGE_SIZE);
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memset(vmx_vmwrite_bitmap, 0xff, PAGE_SIZE);
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/*
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* Allow direct access to the PC debug port (it is often used for I/O
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* delays, but the vmexits simply slow things down).
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*/
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memset(vmx_io_bitmap_a, 0xff, PAGE_SIZE);
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clear_bit(0x80, vmx_io_bitmap_a);
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memset(vmx_io_bitmap_b, 0xff, PAGE_SIZE);
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memset(vmx_msr_bitmap_legacy, 0xff, PAGE_SIZE);
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memset(vmx_msr_bitmap_longmode, 0xff, PAGE_SIZE);
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vmx_disable_intercept_for_msr(MSR_FS_BASE, false);
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vmx_disable_intercept_for_msr(MSR_GS_BASE, false);
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vmx_disable_intercept_for_msr(MSR_KERNEL_GS_BASE, true);
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vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_CS, false);
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vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_ESP, false);
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vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_EIP, false);
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vmx_disable_intercept_for_msr(MSR_IA32_BNDCFGS, true);
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memcpy(vmx_msr_bitmap_legacy_x2apic,
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vmx_msr_bitmap_legacy, PAGE_SIZE);
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memcpy(vmx_msr_bitmap_longmode_x2apic,
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vmx_msr_bitmap_longmode, PAGE_SIZE);
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if (enable_apicv) {
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for (msr = 0x800; msr <= 0x8ff; msr++)
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vmx_disable_intercept_msr_read_x2apic(msr);
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/* According SDM, in x2apic mode, the whole id reg is used.
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* But in KVM, it only use the highest eight bits. Need to
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* intercept it */
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vmx_enable_intercept_msr_read_x2apic(0x802);
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/* TMCCT */
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vmx_enable_intercept_msr_read_x2apic(0x839);
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/* TPR */
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vmx_disable_intercept_msr_write_x2apic(0x808);
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/* EOI */
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vmx_disable_intercept_msr_write_x2apic(0x80b);
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/* SELF-IPI */
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vmx_disable_intercept_msr_write_x2apic(0x83f);
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}
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if (enable_ept) {
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kvm_mmu_set_mask_ptes(0ull,
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(enable_ept_ad_bits) ? VMX_EPT_ACCESS_BIT : 0ull,
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(enable_ept_ad_bits) ? VMX_EPT_DIRTY_BIT : 0ull,
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0ull, VMX_EPT_EXECUTABLE_MASK);
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ept_set_mmio_spte_mask();
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kvm_enable_tdp();
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} else
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kvm_disable_tdp();
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update_ple_window_actual_max();
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if (setup_vmcs_config(&vmcs_config) < 0) {
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r = -EIO;
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goto out7;
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}
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if (boot_cpu_has(X86_FEATURE_NX))
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kvm_enable_efer_bits(EFER_NX);
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@ -5781,10 +5881,38 @@ static __init int hardware_setup(void)
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nested_vmx_setup_ctls_msrs();
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return alloc_kvm_area();
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out7:
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free_page((unsigned long)vmx_vmwrite_bitmap);
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out6:
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free_page((unsigned long)vmx_vmread_bitmap);
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out5:
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free_page((unsigned long)vmx_msr_bitmap_longmode_x2apic);
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out4:
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free_page((unsigned long)vmx_msr_bitmap_longmode);
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out3:
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free_page((unsigned long)vmx_msr_bitmap_legacy_x2apic);
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out2:
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free_page((unsigned long)vmx_msr_bitmap_legacy);
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out1:
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free_page((unsigned long)vmx_io_bitmap_b);
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out:
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free_page((unsigned long)vmx_io_bitmap_a);
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return r;
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}
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static __exit void hardware_unsetup(void)
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{
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free_page((unsigned long)vmx_msr_bitmap_legacy_x2apic);
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free_page((unsigned long)vmx_msr_bitmap_longmode_x2apic);
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free_page((unsigned long)vmx_msr_bitmap_legacy);
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free_page((unsigned long)vmx_msr_bitmap_longmode);
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free_page((unsigned long)vmx_io_bitmap_b);
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free_page((unsigned long)vmx_io_bitmap_a);
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free_page((unsigned long)vmx_vmwrite_bitmap);
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free_page((unsigned long)vmx_vmread_bitmap);
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free_kvm_area();
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}
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@ -9187,150 +9315,21 @@ static struct kvm_x86_ops vmx_x86_ops = {
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static int __init vmx_init(void)
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{
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int r, i, msr;
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rdmsrl_safe(MSR_EFER, &host_efer);
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for (i = 0; i < ARRAY_SIZE(vmx_msr_index); ++i)
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kvm_define_shared_msr(i, vmx_msr_index[i]);
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vmx_io_bitmap_a = (unsigned long *)__get_free_page(GFP_KERNEL);
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if (!vmx_io_bitmap_a)
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return -ENOMEM;
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r = -ENOMEM;
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vmx_io_bitmap_b = (unsigned long *)__get_free_page(GFP_KERNEL);
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if (!vmx_io_bitmap_b)
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goto out;
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vmx_msr_bitmap_legacy = (unsigned long *)__get_free_page(GFP_KERNEL);
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if (!vmx_msr_bitmap_legacy)
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goto out1;
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vmx_msr_bitmap_legacy_x2apic =
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(unsigned long *)__get_free_page(GFP_KERNEL);
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if (!vmx_msr_bitmap_legacy_x2apic)
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goto out2;
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vmx_msr_bitmap_longmode = (unsigned long *)__get_free_page(GFP_KERNEL);
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if (!vmx_msr_bitmap_longmode)
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goto out3;
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vmx_msr_bitmap_longmode_x2apic =
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(unsigned long *)__get_free_page(GFP_KERNEL);
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if (!vmx_msr_bitmap_longmode_x2apic)
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goto out4;
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vmx_vmread_bitmap = (unsigned long *)__get_free_page(GFP_KERNEL);
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if (!vmx_vmread_bitmap)
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goto out5;
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vmx_vmwrite_bitmap = (unsigned long *)__get_free_page(GFP_KERNEL);
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if (!vmx_vmwrite_bitmap)
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goto out6;
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memset(vmx_vmread_bitmap, 0xff, PAGE_SIZE);
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memset(vmx_vmwrite_bitmap, 0xff, PAGE_SIZE);
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/*
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* Allow direct access to the PC debug port (it is often used for I/O
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* delays, but the vmexits simply slow things down).
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*/
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memset(vmx_io_bitmap_a, 0xff, PAGE_SIZE);
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clear_bit(0x80, vmx_io_bitmap_a);
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memset(vmx_io_bitmap_b, 0xff, PAGE_SIZE);
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memset(vmx_msr_bitmap_legacy, 0xff, PAGE_SIZE);
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memset(vmx_msr_bitmap_longmode, 0xff, PAGE_SIZE);
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set_bit(0, vmx_vpid_bitmap); /* 0 is reserved for host */
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r = kvm_init(&vmx_x86_ops, sizeof(struct vcpu_vmx),
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int r = kvm_init(&vmx_x86_ops, sizeof(struct vcpu_vmx),
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__alignof__(struct vcpu_vmx), THIS_MODULE);
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if (r)
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goto out7;
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return r;
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#ifdef CONFIG_KEXEC
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rcu_assign_pointer(crash_vmclear_loaded_vmcss,
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crash_vmclear_local_loaded_vmcss);
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#endif
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vmx_disable_intercept_for_msr(MSR_FS_BASE, false);
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vmx_disable_intercept_for_msr(MSR_GS_BASE, false);
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vmx_disable_intercept_for_msr(MSR_KERNEL_GS_BASE, true);
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vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_CS, false);
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vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_ESP, false);
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vmx_disable_intercept_for_msr(MSR_IA32_SYSENTER_EIP, false);
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vmx_disable_intercept_for_msr(MSR_IA32_BNDCFGS, true);
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memcpy(vmx_msr_bitmap_legacy_x2apic,
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vmx_msr_bitmap_legacy, PAGE_SIZE);
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memcpy(vmx_msr_bitmap_longmode_x2apic,
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vmx_msr_bitmap_longmode, PAGE_SIZE);
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if (enable_apicv) {
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for (msr = 0x800; msr <= 0x8ff; msr++)
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vmx_disable_intercept_msr_read_x2apic(msr);
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/* According SDM, in x2apic mode, the whole id reg is used.
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* But in KVM, it only use the highest eight bits. Need to
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* intercept it */
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vmx_enable_intercept_msr_read_x2apic(0x802);
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/* TMCCT */
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vmx_enable_intercept_msr_read_x2apic(0x839);
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/* TPR */
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vmx_disable_intercept_msr_write_x2apic(0x808);
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/* EOI */
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vmx_disable_intercept_msr_write_x2apic(0x80b);
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/* SELF-IPI */
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vmx_disable_intercept_msr_write_x2apic(0x83f);
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}
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if (enable_ept) {
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kvm_mmu_set_mask_ptes(0ull,
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(enable_ept_ad_bits) ? VMX_EPT_ACCESS_BIT : 0ull,
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(enable_ept_ad_bits) ? VMX_EPT_DIRTY_BIT : 0ull,
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0ull, VMX_EPT_EXECUTABLE_MASK);
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ept_set_mmio_spte_mask();
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kvm_enable_tdp();
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} else
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kvm_disable_tdp();
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update_ple_window_actual_max();
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return 0;
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out7:
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free_page((unsigned long)vmx_vmwrite_bitmap);
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out6:
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free_page((unsigned long)vmx_vmread_bitmap);
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out5:
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free_page((unsigned long)vmx_msr_bitmap_longmode_x2apic);
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out4:
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free_page((unsigned long)vmx_msr_bitmap_longmode);
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out3:
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free_page((unsigned long)vmx_msr_bitmap_legacy_x2apic);
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out2:
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free_page((unsigned long)vmx_msr_bitmap_legacy);
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out1:
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free_page((unsigned long)vmx_io_bitmap_b);
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out:
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free_page((unsigned long)vmx_io_bitmap_a);
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return r;
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}
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static void __exit vmx_exit(void)
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{
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free_page((unsigned long)vmx_msr_bitmap_legacy_x2apic);
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free_page((unsigned long)vmx_msr_bitmap_longmode_x2apic);
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free_page((unsigned long)vmx_msr_bitmap_legacy);
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free_page((unsigned long)vmx_msr_bitmap_longmode);
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free_page((unsigned long)vmx_io_bitmap_b);
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free_page((unsigned long)vmx_io_bitmap_a);
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free_page((unsigned long)vmx_vmwrite_bitmap);
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free_page((unsigned long)vmx_vmread_bitmap);
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#ifdef CONFIG_KEXEC
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RCU_INIT_POINTER(crash_vmclear_loaded_vmcss, NULL);
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synchronize_rcu();
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