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Diffstat (limited to 'arch/x86/kvm/svm.c')
-rw-r--r--arch/x86/kvm/svm.c138
1 files changed, 121 insertions, 17 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index ce438e0fdd26..56c9b6bd7655 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -4,6 +4,7 @@
* AMD SVM support
*
* Copyright (C) 2006 Qumranet, Inc.
+ * Copyright 2010 Red Hat, Inc. and/or its affilates.
*
* Authors:
* Yaniv Kamay <yaniv@qumranet.com>
@@ -285,11 +286,11 @@ static inline void flush_guest_tlb(struct kvm_vcpu *vcpu)
static void svm_set_efer(struct kvm_vcpu *vcpu, u64 efer)
{
+ vcpu->arch.efer = efer;
if (!npt_enabled && !(efer & EFER_LMA))
efer &= ~EFER_LME;
to_svm(vcpu)->vmcb->save.efer = efer | EFER_SVME;
- vcpu->arch.efer = efer;
}
static int is_external_interrupt(u32 info)
@@ -640,7 +641,7 @@ static __init int svm_hardware_setup(void)
if (nested) {
printk(KERN_INFO "kvm: Nested Virtualization enabled\n");
- kvm_enable_efer_bits(EFER_SVME);
+ kvm_enable_efer_bits(EFER_SVME | EFER_LMSLE);
}
for_each_possible_cpu(cpu) {
@@ -806,7 +807,7 @@ static void init_vmcb(struct vcpu_svm *svm)
* svm_set_cr0() sets PG and WP and clears NW and CD on save->cr0.
*/
svm->vcpu.arch.cr0 = X86_CR0_NW | X86_CR0_CD | X86_CR0_ET;
- kvm_set_cr0(&svm->vcpu, svm->vcpu.arch.cr0);
+ (void)kvm_set_cr0(&svm->vcpu, svm->vcpu.arch.cr0);
save->cr4 = X86_CR4_PAE;
/* rdx = ?? */
@@ -903,13 +904,18 @@ static struct kvm_vcpu *svm_create_vcpu(struct kvm *kvm, unsigned int id)
svm->asid_generation = 0;
init_vmcb(svm);
- fx_init(&svm->vcpu);
+ err = fx_init(&svm->vcpu);
+ if (err)
+ goto free_page4;
+
svm->vcpu.arch.apic_base = 0xfee00000 | MSR_IA32_APICBASE_ENABLE;
if (kvm_vcpu_is_bsp(&svm->vcpu))
svm->vcpu.arch.apic_base |= MSR_IA32_APICBASE_BSP;
return &svm->vcpu;
+free_page4:
+ __free_page(hsave_page);
free_page3:
__free_pages(nested_msrpm_pages, MSRPM_ALLOC_ORDER);
free_page2:
@@ -1488,7 +1494,7 @@ static void svm_handle_mce(struct vcpu_svm *svm)
*/
pr_err("KVM: Guest triggered AMD Erratum 383\n");
- set_bit(KVM_REQ_TRIPLE_FAULT, &svm->vcpu.requests);
+ kvm_make_request(KVM_REQ_TRIPLE_FAULT, &svm->vcpu);
return;
}
@@ -1535,7 +1541,7 @@ static int io_interception(struct vcpu_svm *svm)
string = (io_info & SVM_IOIO_STR_MASK) != 0;
in = (io_info & SVM_IOIO_TYPE_MASK) != 0;
if (string || in)
- return !(emulate_instruction(vcpu, 0, 0, 0) == EMULATE_DO_MMIO);
+ return emulate_instruction(vcpu, 0, 0, 0) == EMULATE_DONE;
port = io_info >> 16;
size = (io_info & SVM_IOIO_SIZE_MASK) >> SVM_IOIO_SIZE_SHIFT;
@@ -1957,7 +1963,7 @@ static int nested_svm_vmexit(struct vcpu_svm *svm)
svm->vmcb->save.cr3 = hsave->save.cr3;
svm->vcpu.arch.cr3 = hsave->save.cr3;
} else {
- kvm_set_cr3(&svm->vcpu, hsave->save.cr3);
+ (void)kvm_set_cr3(&svm->vcpu, hsave->save.cr3);
}
kvm_register_write(&svm->vcpu, VCPU_REGS_RAX, hsave->save.rax);
kvm_register_write(&svm->vcpu, VCPU_REGS_RSP, hsave->save.rsp);
@@ -2080,7 +2086,7 @@ static bool nested_svm_vmrun(struct vcpu_svm *svm)
svm->vmcb->save.cr3 = nested_vmcb->save.cr3;
svm->vcpu.arch.cr3 = nested_vmcb->save.cr3;
} else
- kvm_set_cr3(&svm->vcpu, nested_vmcb->save.cr3);
+ (void)kvm_set_cr3(&svm->vcpu, nested_vmcb->save.cr3);
/* Guest paging mode is active - reset mmu */
kvm_mmu_reset_context(&svm->vcpu);
@@ -2386,16 +2392,12 @@ static int iret_interception(struct vcpu_svm *svm)
static int invlpg_interception(struct vcpu_svm *svm)
{
- if (emulate_instruction(&svm->vcpu, 0, 0, 0) != EMULATE_DONE)
- pr_unimpl(&svm->vcpu, "%s: failed\n", __func__);
- return 1;
+ return emulate_instruction(&svm->vcpu, 0, 0, 0) == EMULATE_DONE;
}
static int emulate_on_interception(struct vcpu_svm *svm)
{
- if (emulate_instruction(&svm->vcpu, 0, 0, 0) != EMULATE_DONE)
- pr_unimpl(&svm->vcpu, "%s: failed\n", __func__);
- return 1;
+ return emulate_instruction(&svm->vcpu, 0, 0, 0) == EMULATE_DONE;
}
static int cr8_write_interception(struct vcpu_svm *svm)
@@ -2726,6 +2728,99 @@ static int (*svm_exit_handlers[])(struct vcpu_svm *svm) = {
[SVM_EXIT_NPF] = pf_interception,
};
+void dump_vmcb(struct kvm_vcpu *vcpu)
+{
+ struct vcpu_svm *svm = to_svm(vcpu);
+ struct vmcb_control_area *control = &svm->vmcb->control;
+ struct vmcb_save_area *save = &svm->vmcb->save;
+
+ pr_err("VMCB Control Area:\n");
+ pr_err("cr_read: %04x\n", control->intercept_cr_read);
+ pr_err("cr_write: %04x\n", control->intercept_cr_write);
+ pr_err("dr_read: %04x\n", control->intercept_dr_read);
+ pr_err("dr_write: %04x\n", control->intercept_dr_write);
+ pr_err("exceptions: %08x\n", control->intercept_exceptions);
+ pr_err("intercepts: %016llx\n", control->intercept);
+ pr_err("pause filter count: %d\n", control->pause_filter_count);
+ pr_err("iopm_base_pa: %016llx\n", control->iopm_base_pa);
+ pr_err("msrpm_base_pa: %016llx\n", control->msrpm_base_pa);
+ pr_err("tsc_offset: %016llx\n", control->tsc_offset);
+ pr_err("asid: %d\n", control->asid);
+ pr_err("tlb_ctl: %d\n", control->tlb_ctl);
+ pr_err("int_ctl: %08x\n", control->int_ctl);
+ pr_err("int_vector: %08x\n", control->int_vector);
+ pr_err("int_state: %08x\n", control->int_state);
+ pr_err("exit_code: %08x\n", control->exit_code);
+ pr_err("exit_info1: %016llx\n", control->exit_info_1);
+ pr_err("exit_info2: %016llx\n", control->exit_info_2);
+ pr_err("exit_int_info: %08x\n", control->exit_int_info);
+ pr_err("exit_int_info_err: %08x\n", control->exit_int_info_err);
+ pr_err("nested_ctl: %lld\n", control->nested_ctl);
+ pr_err("nested_cr3: %016llx\n", control->nested_cr3);
+ pr_err("event_inj: %08x\n", control->event_inj);
+ pr_err("event_inj_err: %08x\n", control->event_inj_err);
+ pr_err("lbr_ctl: %lld\n", control->lbr_ctl);
+ pr_err("next_rip: %016llx\n", control->next_rip);
+ pr_err("VMCB State Save Area:\n");
+ pr_err("es: s: %04x a: %04x l: %08x b: %016llx\n",
+ save->es.selector, save->es.attrib,
+ save->es.limit, save->es.base);
+ pr_err("cs: s: %04x a: %04x l: %08x b: %016llx\n",
+ save->cs.selector, save->cs.attrib,
+ save->cs.limit, save->cs.base);
+ pr_err("ss: s: %04x a: %04x l: %08x b: %016llx\n",
+ save->ss.selector, save->ss.attrib,
+ save->ss.limit, save->ss.base);
+ pr_err("ds: s: %04x a: %04x l: %08x b: %016llx\n",
+ save->ds.selector, save->ds.attrib,
+ save->ds.limit, save->ds.base);
+ pr_err("fs: s: %04x a: %04x l: %08x b: %016llx\n",
+ save->fs.selector, save->fs.attrib,
+ save->fs.limit, save->fs.base);
+ pr_err("gs: s: %04x a: %04x l: %08x b: %016llx\n",
+ save->gs.selector, save->gs.attrib,
+ save->gs.limit, save->gs.base);
+ pr_err("gdtr: s: %04x a: %04x l: %08x b: %016llx\n",
+ save->gdtr.selector, save->gdtr.attrib,
+ save->gdtr.limit, save->gdtr.base);
+ pr_err("ldtr: s: %04x a: %04x l: %08x b: %016llx\n",
+ save->ldtr.selector, save->ldtr.attrib,
+ save->ldtr.limit, save->ldtr.base);
+ pr_err("idtr: s: %04x a: %04x l: %08x b: %016llx\n",
+ save->idtr.selector, save->idtr.attrib,
+ save->idtr.limit, save->idtr.base);
+ pr_err("tr: s: %04x a: %04x l: %08x b: %016llx\n",
+ save->tr.selector, save->tr.attrib,
+ save->tr.limit, save->tr.base);
+ pr_err("cpl: %d efer: %016llx\n",
+ save->cpl, save->efer);
+ pr_err("cr0: %016llx cr2: %016llx\n",
+ save->cr0, save->cr2);
+ pr_err("cr3: %016llx cr4: %016llx\n",
+ save->cr3, save->cr4);
+ pr_err("dr6: %016llx dr7: %016llx\n",
+ save->dr6, save->dr7);
+ pr_err("rip: %016llx rflags: %016llx\n",
+ save->rip, save->rflags);
+ pr_err("rsp: %016llx rax: %016llx\n",
+ save->rsp, save->rax);
+ pr_err("star: %016llx lstar: %016llx\n",
+ save->star, save->lstar);
+ pr_err("cstar: %016llx sfmask: %016llx\n",
+ save->cstar, save->sfmask);
+ pr_err("kernel_gs_base: %016llx sysenter_cs: %016llx\n",
+ save->kernel_gs_base, save->sysenter_cs);
+ pr_err("sysenter_esp: %016llx sysenter_eip: %016llx\n",
+ save->sysenter_esp, save->sysenter_eip);
+ pr_err("gpat: %016llx dbgctl: %016llx\n",
+ save->g_pat, save->dbgctl);
+ pr_err("br_from: %016llx br_to: %016llx\n",
+ save->br_from, save->br_to);
+ pr_err("excp_from: %016llx excp_to: %016llx\n",
+ save->last_excp_from, save->last_excp_to);
+
+}
+
static int handle_exit(struct kvm_vcpu *vcpu)
{
struct vcpu_svm *svm = to_svm(vcpu);
@@ -2770,6 +2865,8 @@ static int handle_exit(struct kvm_vcpu *vcpu)
kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
kvm_run->fail_entry.hardware_entry_failure_reason
= svm->vmcb->control.exit_code;
+ pr_err("KVM: FAILED VMRUN WITH VMCB:\n");
+ dump_vmcb(vcpu);
return 0;
}
@@ -2826,9 +2923,6 @@ static inline void svm_inject_irq(struct vcpu_svm *svm, int irq)
{
struct vmcb_control_area *control;
- trace_kvm_inj_virq(irq);
-
- ++svm->vcpu.stat.irq_injections;
control = &svm->vmcb->control;
control->int_vector = irq;
control->int_ctl &= ~V_INTR_PRIO_MASK;
@@ -2842,6 +2936,9 @@ static void svm_set_irq(struct kvm_vcpu *vcpu)
BUG_ON(!(gif_set(svm)));
+ trace_kvm_inj_virq(vcpu->arch.interrupt.nr);
+ ++vcpu->stat.irq_injections;
+
svm->vmcb->control.event_inj = vcpu->arch.interrupt.nr |
SVM_EVTINJ_VALID | SVM_EVTINJ_TYPE_INTR;
}
@@ -3327,6 +3424,11 @@ static bool svm_rdtscp_supported(void)
return false;
}
+static bool svm_has_wbinvd_exit(void)
+{
+ return true;
+}
+
static void svm_fpu_deactivate(struct kvm_vcpu *vcpu)
{
struct vcpu_svm *svm = to_svm(vcpu);
@@ -3411,6 +3513,8 @@ static struct kvm_x86_ops svm_x86_ops = {
.rdtscp_supported = svm_rdtscp_supported,
.set_supported_cpuid = svm_set_supported_cpuid,
+
+ .has_wbinvd_exit = svm_has_wbinvd_exit,
};
static int __init svm_init(void)
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.