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-rw-r--r--arch/arm64/kvm/arm.c7
-rw-r--r--arch/arm64/kvm/hyp/entry.S8
-rw-r--r--arch/arm64/kvm/hyp/include/hyp/switch.h9
-rw-r--r--arch/arm64/kvm/hyp/nvhe/debug-sr.c12
-rw-r--r--arch/arm64/kvm/hyp/nvhe/host.S15
-rw-r--r--arch/arm64/kvm/hyp/nvhe/hyp-main.c12
-rw-r--r--arch/arm64/kvm/hyp/nvhe/switch.c14
-rw-r--r--arch/arm64/kvm/hyp/nvhe/tlb.c3
-rw-r--r--arch/arm64/kvm/hyp/pgtable.c1
-rw-r--r--arch/arm64/kvm/hyp/vgic-v3-sr.c40
-rw-r--r--arch/arm64/kvm/hyp/vhe/tlb.c3
-rw-r--r--arch/arm64/kvm/mmu.c3
-rw-r--r--arch/arm64/kvm/perf.c10
-rw-r--r--arch/arm64/kvm/pmu-emul.c10
-rw-r--r--arch/arm64/kvm/reset.c22
-rw-r--r--arch/arm64/kvm/vgic/vgic-v3.c12
16 files changed, 129 insertions, 52 deletions
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index fc4c95dd2d26..7f06ba76698d 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -385,11 +385,16 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
last_ran = this_cpu_ptr(mmu->last_vcpu_ran);
/*
+ * We guarantee that both TLBs and I-cache are private to each
+ * vcpu. If detecting that a vcpu from the same VM has
+ * previously run on the same physical CPU, call into the
+ * hypervisor code to nuke the relevant contexts.
+ *
* We might get preempted before the vCPU actually runs, but
* over-invalidation doesn't affect correctness.
*/
if (*last_ran != vcpu->vcpu_id) {
- kvm_call_hyp(__kvm_tlb_flush_local_vmid, mmu);
+ kvm_call_hyp(__kvm_flush_cpu_context, mmu);
*last_ran = vcpu->vcpu_id;
}
diff --git a/arch/arm64/kvm/hyp/entry.S b/arch/arm64/kvm/hyp/entry.S
index b0afad7a99c6..e831d3dfd50d 100644
--- a/arch/arm64/kvm/hyp/entry.S
+++ b/arch/arm64/kvm/hyp/entry.S
@@ -85,8 +85,10 @@ SYM_INNER_LABEL(__guest_exit_panic, SYM_L_GLOBAL)
// If the hyp context is loaded, go straight to hyp_panic
get_loaded_vcpu x0, x1
- cbz x0, hyp_panic
+ cbnz x0, 1f
+ b hyp_panic
+1:
// The hyp context is saved so make sure it is restored to allow
// hyp_panic to run at hyp and, subsequently, panic to run in the host.
// This makes use of __guest_exit to avoid duplication but sets the
@@ -94,7 +96,7 @@ SYM_INNER_LABEL(__guest_exit_panic, SYM_L_GLOBAL)
// current state is saved to the guest context but it will only be
// accurate if the guest had been completely restored.
adr_this_cpu x0, kvm_hyp_ctxt, x1
- adr x1, hyp_panic
+ adr_l x1, hyp_panic
str x1, [x0, #CPU_XREG_OFFSET(30)]
get_vcpu_ptr x1, x0
@@ -146,7 +148,7 @@ SYM_INNER_LABEL(__guest_exit, SYM_L_GLOBAL)
// Now restore the hyp regs
restore_callee_saved_regs x2
- set_loaded_vcpu xzr, x1, x2
+ set_loaded_vcpu xzr, x2, x3
alternative_if ARM64_HAS_RAS_EXTN
// If we have the RAS extensions we can consume a pending error
diff --git a/arch/arm64/kvm/hyp/include/hyp/switch.h b/arch/arm64/kvm/hyp/include/hyp/switch.h
index 54f4860cd87c..6c1f51f25eb3 100644
--- a/arch/arm64/kvm/hyp/include/hyp/switch.h
+++ b/arch/arm64/kvm/hyp/include/hyp/switch.h
@@ -90,15 +90,18 @@ static inline void __activate_traps_common(struct kvm_vcpu *vcpu)
* counter, which could make a PMXEVCNTR_EL0 access UNDEF at
* EL1 instead of being trapped to EL2.
*/
- write_sysreg(0, pmselr_el0);
- write_sysreg(ARMV8_PMU_USERENR_MASK, pmuserenr_el0);
+ if (kvm_arm_support_pmu_v3()) {
+ write_sysreg(0, pmselr_el0);
+ write_sysreg(ARMV8_PMU_USERENR_MASK, pmuserenr_el0);
+ }
write_sysreg(vcpu->arch.mdcr_el2, mdcr_el2);
}
static inline void __deactivate_traps_common(void)
{
write_sysreg(0, hstr_el2);
- write_sysreg(0, pmuserenr_el0);
+ if (kvm_arm_support_pmu_v3())
+ write_sysreg(0, pmuserenr_el0);
}
static inline void ___activate_traps(struct kvm_vcpu *vcpu)
diff --git a/arch/arm64/kvm/hyp/nvhe/debug-sr.c b/arch/arm64/kvm/hyp/nvhe/debug-sr.c
index 91a711aa8382..f401724f12ef 100644
--- a/arch/arm64/kvm/hyp/nvhe/debug-sr.c
+++ b/arch/arm64/kvm/hyp/nvhe/debug-sr.c
@@ -58,16 +58,24 @@ static void __debug_restore_spe(u64 pmscr_el1)
write_sysreg_s(pmscr_el1, SYS_PMSCR_EL1);
}
-void __debug_switch_to_guest(struct kvm_vcpu *vcpu)
+void __debug_save_host_buffers_nvhe(struct kvm_vcpu *vcpu)
{
/* Disable and flush SPE data generation */
__debug_save_spe(&vcpu->arch.host_debug_state.pmscr_el1);
+}
+
+void __debug_switch_to_guest(struct kvm_vcpu *vcpu)
+{
__debug_switch_to_guest_common(vcpu);
}
-void __debug_switch_to_host(struct kvm_vcpu *vcpu)
+void __debug_restore_host_buffers_nvhe(struct kvm_vcpu *vcpu)
{
__debug_restore_spe(vcpu->arch.host_debug_state.pmscr_el1);
+}
+
+void __debug_switch_to_host(struct kvm_vcpu *vcpu)
+{
__debug_switch_to_host_common(vcpu);
}
diff --git a/arch/arm64/kvm/hyp/nvhe/host.S b/arch/arm64/kvm/hyp/nvhe/host.S
index 6585a7cbbc56..5d94584840cc 100644
--- a/arch/arm64/kvm/hyp/nvhe/host.S
+++ b/arch/arm64/kvm/hyp/nvhe/host.S
@@ -71,7 +71,8 @@ SYM_FUNC_START(__host_enter)
SYM_FUNC_END(__host_enter)
/*
- * void __noreturn __hyp_do_panic(bool restore_host, u64 spsr, u64 elr, u64 par);
+ * void __noreturn __hyp_do_panic(struct kvm_cpu_context *host_ctxt, u64 spsr,
+ * u64 elr, u64 par);
*/
SYM_FUNC_START(__hyp_do_panic)
/* Prepare and exit to the host's panic funciton. */
@@ -82,9 +83,11 @@ SYM_FUNC_START(__hyp_do_panic)
hyp_kimg_va lr, x6
msr elr_el2, lr
- /* Set the panic format string. Use the, now free, LR as scratch. */
- ldr lr, =__hyp_panic_string
- hyp_kimg_va lr, x6
+ mov x29, x0
+
+ /* Load the format string into x0 and arguments into x1-7 */
+ ldr x0, =__hyp_panic_string
+ hyp_kimg_va x0, x6
/* Load the format arguments into x1-7. */
mov x6, x3
@@ -94,9 +97,7 @@ SYM_FUNC_START(__hyp_do_panic)
mrs x5, hpfar_el2
/* Enter the host, conditionally restoring the host context. */
- cmp x0, xzr
- mov x0, lr
- b.eq __host_enter_without_restoring
+ cbz x29, __host_enter_without_restoring
b __host_enter_for_panic
SYM_FUNC_END(__hyp_do_panic)
diff --git a/arch/arm64/kvm/hyp/nvhe/hyp-main.c b/arch/arm64/kvm/hyp/nvhe/hyp-main.c
index f012f8665ecc..936328207bde 100644
--- a/arch/arm64/kvm/hyp/nvhe/hyp-main.c
+++ b/arch/arm64/kvm/hyp/nvhe/hyp-main.c
@@ -46,11 +46,11 @@ static void handle___kvm_tlb_flush_vmid(struct kvm_cpu_context *host_ctxt)
__kvm_tlb_flush_vmid(kern_hyp_va(mmu));
}
-static void handle___kvm_tlb_flush_local_vmid(struct kvm_cpu_context *host_ctxt)
+static void handle___kvm_flush_cpu_context(struct kvm_cpu_context *host_ctxt)
{
DECLARE_REG(struct kvm_s2_mmu *, mmu, host_ctxt, 1);
- __kvm_tlb_flush_local_vmid(kern_hyp_va(mmu));
+ __kvm_flush_cpu_context(kern_hyp_va(mmu));
}
static void handle___kvm_timer_set_cntvoff(struct kvm_cpu_context *host_ctxt)
@@ -67,9 +67,9 @@ static void handle___kvm_enable_ssbs(struct kvm_cpu_context *host_ctxt)
write_sysreg_el2(tmp, SYS_SCTLR);
}
-static void handle___vgic_v3_get_ich_vtr_el2(struct kvm_cpu_context *host_ctxt)
+static void handle___vgic_v3_get_gic_config(struct kvm_cpu_context *host_ctxt)
{
- cpu_reg(host_ctxt, 1) = __vgic_v3_get_ich_vtr_el2();
+ cpu_reg(host_ctxt, 1) = __vgic_v3_get_gic_config();
}
static void handle___vgic_v3_read_vmcr(struct kvm_cpu_context *host_ctxt)
@@ -115,10 +115,10 @@ static const hcall_t host_hcall[] = {
HANDLE_FUNC(__kvm_flush_vm_context),
HANDLE_FUNC(__kvm_tlb_flush_vmid_ipa),
HANDLE_FUNC(__kvm_tlb_flush_vmid),
- HANDLE_FUNC(__kvm_tlb_flush_local_vmid),
+ HANDLE_FUNC(__kvm_flush_cpu_context),
HANDLE_FUNC(__kvm_timer_set_cntvoff),
HANDLE_FUNC(__kvm_enable_ssbs),
- HANDLE_FUNC(__vgic_v3_get_ich_vtr_el2),
+ HANDLE_FUNC(__vgic_v3_get_gic_config),
HANDLE_FUNC(__vgic_v3_read_vmcr),
HANDLE_FUNC(__vgic_v3_write_vmcr),
HANDLE_FUNC(__vgic_v3_init_lrs),
diff --git a/arch/arm64/kvm/hyp/nvhe/switch.c b/arch/arm64/kvm/hyp/nvhe/switch.c
index f3d0e9eca56c..68ab6b4d5141 100644
--- a/arch/arm64/kvm/hyp/nvhe/switch.c
+++ b/arch/arm64/kvm/hyp/nvhe/switch.c
@@ -192,6 +192,14 @@ int __kvm_vcpu_run(struct kvm_vcpu *vcpu)
pmu_switch_needed = __pmu_switch_to_guest(host_ctxt);
__sysreg_save_state_nvhe(host_ctxt);
+ /*
+ * We must flush and disable the SPE buffer for nVHE, as
+ * the translation regime(EL1&0) is going to be loaded with
+ * that of the guest. And we must do this before we change the
+ * translation regime to EL2 (via MDCR_EL2_E2PB == 0) and
+ * before we load guest Stage1.
+ */
+ __debug_save_host_buffers_nvhe(vcpu);
__adjust_pc(vcpu);
@@ -234,11 +242,12 @@ int __kvm_vcpu_run(struct kvm_vcpu *vcpu)
if (vcpu->arch.flags & KVM_ARM64_FP_ENABLED)
__fpsimd_save_fpexc32(vcpu);
+ __debug_switch_to_host(vcpu);
/*
* This must come after restoring the host sysregs, since a non-VHE
* system may enable SPE here and make use of the TTBRs.
*/
- __debug_switch_to_host(vcpu);
+ __debug_restore_host_buffers_nvhe(vcpu);
if (pmu_switch_needed)
__pmu_switch_to_host(host_ctxt);
@@ -257,7 +266,6 @@ void __noreturn hyp_panic(void)
u64 spsr = read_sysreg_el2(SYS_SPSR);
u64 elr = read_sysreg_el2(SYS_ELR);
u64 par = read_sysreg_par();
- bool restore_host = true;
struct kvm_cpu_context *host_ctxt;
struct kvm_vcpu *vcpu;
@@ -271,7 +279,7 @@ void __noreturn hyp_panic(void)
__sysreg_restore_state_nvhe(host_ctxt);
}
- __hyp_do_panic(restore_host, spsr, elr, par);
+ __hyp_do_panic(host_ctxt, spsr, elr, par);
unreachable();
}
diff --git a/arch/arm64/kvm/hyp/nvhe/tlb.c b/arch/arm64/kvm/hyp/nvhe/tlb.c
index fbde89a2c6e8..229b06748c20 100644
--- a/arch/arm64/kvm/hyp/nvhe/tlb.c
+++ b/arch/arm64/kvm/hyp/nvhe/tlb.c
@@ -123,7 +123,7 @@ void __kvm_tlb_flush_vmid(struct kvm_s2_mmu *mmu)
__tlb_switch_to_host(&cxt);
}
-void __kvm_tlb_flush_local_vmid(struct kvm_s2_mmu *mmu)
+void __kvm_flush_cpu_context(struct kvm_s2_mmu *mmu)
{
struct tlb_inv_context cxt;
@@ -131,6 +131,7 @@ void __kvm_tlb_flush_local_vmid(struct kvm_s2_mmu *mmu)
__tlb_switch_to_guest(mmu, &cxt);
__tlbi(vmalle1);
+ asm volatile("ic iallu");
dsb(nsh);
isb();
diff --git a/arch/arm64/kvm/hyp/pgtable.c b/arch/arm64/kvm/hyp/pgtable.c
index 4d177ce1d536..926fc07074f5 100644
--- a/arch/arm64/kvm/hyp/pgtable.c
+++ b/arch/arm64/kvm/hyp/pgtable.c
@@ -223,6 +223,7 @@ static inline int __kvm_pgtable_visit(struct kvm_pgtable_walk_data *data,
goto out;
if (!table) {
+ data->addr = ALIGN_DOWN(data->addr, kvm_granule_size(level));
data->addr += kvm_granule_size(level);
goto out;
}
diff --git a/arch/arm64/kvm/hyp/vgic-v3-sr.c b/arch/arm64/kvm/hyp/vgic-v3-sr.c
index 80406f463c28..ee3682b9873c 100644
--- a/arch/arm64/kvm/hyp/vgic-v3-sr.c
+++ b/arch/arm64/kvm/hyp/vgic-v3-sr.c
@@ -405,9 +405,45 @@ void __vgic_v3_init_lrs(void)
__gic_v3_set_lr(0, i);
}
-u64 __vgic_v3_get_ich_vtr_el2(void)
+/*
+ * Return the GIC CPU configuration:
+ * - [31:0] ICH_VTR_EL2
+ * - [62:32] RES0
+ * - [63] MMIO (GICv2) capable
+ */
+u64 __vgic_v3_get_gic_config(void)
{
- return read_gicreg(ICH_VTR_EL2);
+ u64 val, sre = read_gicreg(ICC_SRE_EL1);
+ unsigned long flags = 0;
+
+ /*
+ * To check whether we have a MMIO-based (GICv2 compatible)
+ * CPU interface, we need to disable the system register
+ * view. To do that safely, we have to prevent any interrupt
+ * from firing (which would be deadly).
+ *
+ * Note that this only makes sense on VHE, as interrupts are
+ * already masked for nVHE as part of the exception entry to
+ * EL2.
+ */
+ if (has_vhe())
+ flags = local_daif_save();
+
+ write_gicreg(0, ICC_SRE_EL1);
+ isb();
+
+ val = read_gicreg(ICC_SRE_EL1);
+
+ write_gicreg(sre, ICC_SRE_EL1);
+ isb();
+
+ if (has_vhe())
+ local_daif_restore(flags);
+
+ val = (val & ICC_SRE_EL1_SRE) ? 0 : (1ULL << 63);
+ val |= read_gicreg(ICH_VTR_EL2);
+
+ return val;
}
u64 __vgic_v3_read_vmcr(void)
diff --git a/arch/arm64/kvm/hyp/vhe/tlb.c b/arch/arm64/kvm/hyp/vhe/tlb.c
index fd7895945bbc..66f17349f0c3 100644
--- a/arch/arm64/kvm/hyp/vhe/tlb.c
+++ b/arch/arm64/kvm/hyp/vhe/tlb.c
@@ -127,7 +127,7 @@ void __kvm_tlb_flush_vmid(struct kvm_s2_mmu *mmu)
__tlb_switch_to_host(&cxt);
}
-void __kvm_tlb_flush_local_vmid(struct kvm_s2_mmu *mmu)
+void __kvm_flush_cpu_context(struct kvm_s2_mmu *mmu)
{
struct tlb_inv_context cxt;
@@ -135,6 +135,7 @@ void __kvm_tlb_flush_local_vmid(struct kvm_s2_mmu *mmu)
__tlb_switch_to_guest(mmu, &cxt);
__tlbi(vmalle1);
+ asm volatile("ic iallu");
dsb(nsh);
isb();
diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c
index 77cb2d28f2a4..8711894db8c2 100644
--- a/arch/arm64/kvm/mmu.c
+++ b/arch/arm64/kvm/mmu.c
@@ -1312,8 +1312,7 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm,
* Prevent userspace from creating a memory region outside of the IPA
* space addressable by the KVM guest IPA space.
*/
- if (memslot->base_gfn + memslot->npages >=
- (kvm_phys_size(kvm) >> PAGE_SHIFT))
+ if ((memslot->base_gfn + memslot->npages) > (kvm_phys_size(kvm) >> PAGE_SHIFT))
return -EFAULT;
mmap_read_lock(current->mm);
diff --git a/arch/arm64/kvm/perf.c b/arch/arm64/kvm/perf.c
index d45b8b9a4415..739164324afe 100644
--- a/arch/arm64/kvm/perf.c
+++ b/arch/arm64/kvm/perf.c
@@ -11,6 +11,8 @@
#include <asm/kvm_emulate.h>
+DEFINE_STATIC_KEY_FALSE(kvm_arm_pmu_available);
+
static int kvm_is_in_guest(void)
{
return kvm_get_running_vcpu() != NULL;
@@ -48,6 +50,14 @@ static struct perf_guest_info_callbacks kvm_guest_cbs = {
int kvm_perf_init(void)
{
+ /*
+ * Check if HW_PERF_EVENTS are supported by checking the number of
+ * hardware performance counters. This could ensure the presence of
+ * a physical PMU and CONFIG_PERF_EVENT is selected.
+ */
+ if (IS_ENABLED(CONFIG_ARM_PMU) && perf_num_counters() > 0)
+ static_branch_enable(&kvm_arm_pmu_available);
+
return perf_register_guest_info_callbacks(&kvm_guest_cbs);
}
diff --git a/arch/arm64/kvm/pmu-emul.c b/arch/arm64/kvm/pmu-emul.c
index e9ec08b0b070..e32c6e139a09 100644
--- a/arch/arm64/kvm/pmu-emul.c
+++ b/arch/arm64/kvm/pmu-emul.c
@@ -823,16 +823,6 @@ u64 kvm_pmu_get_pmceid(struct kvm_vcpu *vcpu, bool pmceid1)
return val & mask;
}
-bool kvm_arm_support_pmu_v3(void)
-{
- /*
- * Check if HW_PERF_EVENTS are supported by checking the number of
- * hardware performance counters. This could ensure the presence of
- * a physical PMU and CONFIG_PERF_EVENT is selected.
- */
- return (perf_num_counters() > 0);
-}
-
int kvm_arm_pmu_v3_enable(struct kvm_vcpu *vcpu)
{
if (!kvm_vcpu_has_pmu(vcpu))
diff --git a/arch/arm64/kvm/reset.c b/arch/arm64/kvm/reset.c
index 47f3f035f3ea..bd354cd45d28 100644
--- a/arch/arm64/kvm/reset.c
+++ b/arch/arm64/kvm/reset.c
@@ -311,23 +311,24 @@ int kvm_set_ipa_limit(void)
}
switch (cpuid_feature_extract_unsigned_field(mmfr0, tgran_2)) {
- default:
- case 1:
+ case ID_AA64MMFR0_TGRAN_2_SUPPORTED_NONE:
kvm_err("PAGE_SIZE not supported at Stage-2, giving up\n");
return -EINVAL;
- case 0:
+ case ID_AA64MMFR0_TGRAN_2_SUPPORTED_DEFAULT:
kvm_debug("PAGE_SIZE supported at Stage-2 (default)\n");
break;
- case 2:
+ case ID_AA64MMFR0_TGRAN_2_SUPPORTED_MIN ... ID_AA64MMFR0_TGRAN_2_SUPPORTED_MAX:
kvm_debug("PAGE_SIZE supported at Stage-2 (advertised)\n");
break;
+ default:
+ kvm_err("Unsupported value for TGRAN_2, giving up\n");
+ return -EINVAL;
}
kvm_ipa_limit = id_aa64mmfr0_parange_to_phys_shift(parange);
- WARN(kvm_ipa_limit < KVM_PHYS_SHIFT,
- "KVM IPA Size Limit (%d bits) is smaller than default size\n",
- kvm_ipa_limit);
- kvm_info("IPA Size Limit: %d bits\n", kvm_ipa_limit);
+ kvm_info("IPA Size Limit: %d bits%s\n", kvm_ipa_limit,
+ ((kvm_ipa_limit < KVM_PHYS_SHIFT) ?
+ " (Reduced IPA size, limited VM/VMM compatibility)" : ""));
return 0;
}
@@ -356,6 +357,11 @@ int kvm_arm_setup_stage2(struct kvm *kvm, unsigned long type)
return -EINVAL;
} else {
phys_shift = KVM_PHYS_SHIFT;
+ if (phys_shift > kvm_ipa_limit) {
+ pr_warn_once("%s using unsupported default IPA limit, upgrade your VMM\n",
+ current->comm);
+ return -EINVAL;
+ }
}
mmfr0 = read_sanitised_ftr_reg(SYS_ID_AA64MMFR0_EL1);
diff --git a/arch/arm64/kvm/vgic/vgic-v3.c b/arch/arm64/kvm/vgic/vgic-v3.c
index 52915b342351..6f530925a231 100644
--- a/arch/arm64/kvm/vgic/vgic-v3.c
+++ b/arch/arm64/kvm/vgic/vgic-v3.c
@@ -574,9 +574,13 @@ early_param("kvm-arm.vgic_v4_enable", early_gicv4_enable);
*/
int vgic_v3_probe(const struct gic_kvm_info *info)
{
- u32 ich_vtr_el2 = kvm_call_hyp_ret(__vgic_v3_get_ich_vtr_el2);
+ u64 ich_vtr_el2 = kvm_call_hyp_ret(__vgic_v3_get_gic_config);
+ bool has_v2;
int ret;
+ has_v2 = ich_vtr_el2 >> 63;
+ ich_vtr_el2 = (u32)ich_vtr_el2;
+
/*
* The ListRegs field is 5 bits, but there is an architectural
* maximum of 16 list registers. Just ignore bit 4...
@@ -594,13 +598,15 @@ int vgic_v3_probe(const struct gic_kvm_info *info)
gicv4_enable ? "en" : "dis");
}
+ kvm_vgic_global_state.vcpu_base = 0;
+
if (!info->vcpu.start) {
kvm_info("GICv3: no GICV resource entry\n");
- kvm_vgic_global_state.vcpu_base = 0;
+ } else if (!has_v2) {
+ pr_warn(FW_BUG "CPU interface incapable of MMIO access\n");
} else if (!PAGE_ALIGNED(info->vcpu.start)) {
pr_warn("GICV physical address 0x%llx not page aligned\n",
(unsigned long long)info->vcpu.start);
- kvm_vgic_global_state.vcpu_base = 0;
} else {
kvm_vgic_global_state.vcpu_base = info->vcpu.start;
kvm_vgic_global_state.can_emulate_gicv2 = true;