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Merge tag 'kvmarm-6.19' of https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

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KVM/arm64 updates for 6.19

 - Support for userspace handling of synchronous external aborts (SEAs),
   allowing the VMM to potentially handle the abort in a non-fatal
   manner.

 - Large rework of the VGIC's list register handling with the goal of
   supporting more active/pending IRQs than available list registers in
   hardware. In addition, the VGIC now supports EOImode==1 style
   deactivations for IRQs which may occur on a separate vCPU than the
   one that acked the IRQ.

 - Support for FEAT_XNX (user / privileged execute permissions) and
   FEAT_HAF (hardware update to the Access Flag) in the software page
   table walkers and shadow MMU.

 - Allow page table destruction to reschedule, fixing long need_resched
   latencies observed when destroying a large VM.

 - Minor fixes to KVM and selftests
This commit is contained in:
Paolo Bonzini
2025-12-02 18:36:26 +01:00
parent 63a9b0bc65 3eef0c83c3
commit f58e70cc31
55 changed files with 2586 additions and 542 deletions
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9
arch/arm64/kvm/vgic/vgic-init.c
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@@ -198,6 +198,7 @@ static int kvm_vgic_dist_init(struct kvm *kvm, unsigned int nr_spis)
struct kvm_vcpu *vcpu0 = kvm_get_vcpu(kvm, 0);
int i;
dist->active_spis = (atomic_t)ATOMIC_INIT(0);
dist->spis = kcalloc(nr_spis, sizeof(struct vgic_irq), GFP_KERNEL_ACCOUNT);
if (!dist->spis)
return -ENOMEM;
@@ -363,12 +364,12 @@ int kvm_vgic_vcpu_init(struct kvm_vcpu *vcpu)
return ret;
}
static void kvm_vgic_vcpu_enable(struct kvm_vcpu *vcpu)
static void kvm_vgic_vcpu_reset(struct kvm_vcpu *vcpu)
{
if (kvm_vgic_global_state.type == VGIC_V2)
vgic_v2_enable(vcpu);
vgic_v2_reset(vcpu);
else
vgic_v3_enable(vcpu);
vgic_v3_reset(vcpu);
}
/*
@@ -415,7 +416,7 @@ int vgic_init(struct kvm *kvm)
}
kvm_for_each_vcpu(idx, vcpu, kvm)
kvm_vgic_vcpu_enable(vcpu);
kvm_vgic_vcpu_reset(vcpu);
ret = kvm_vgic_setup_default_irq_routing(kvm);
if (ret)