mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-31 16:38:12 +00:00
KVM: arm64: vgic-v4: Initialize GICv4.1 even in the absence of a virtual ITS
KVM now expects to be able to use HW-accelerated delivery of vSGIs
as soon as the guest has enabled thm. Unfortunately, we only
initialize the GICv4 context if we have a virtual ITS exposed to
the guest.
Fix it by always initializing the GICv4.1 context if it is
available on the host.
Fixes: 2291ff2f2a
("KVM: arm64: GICv4.1: Plumb SGI implementation selection in the distributor")
Reviewed-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
parent
6e977984f6
commit
958e8e14fd
2 changed files with 10 additions and 2 deletions
|
@ -294,8 +294,15 @@ int vgic_init(struct kvm *kvm)
|
|||
}
|
||||
}
|
||||
|
||||
if (vgic_has_its(kvm)) {
|
||||
if (vgic_has_its(kvm))
|
||||
vgic_lpi_translation_cache_init(kvm);
|
||||
|
||||
/*
|
||||
* If we have GICv4.1 enabled, unconditionnaly request enable the
|
||||
* v4 support so that we get HW-accelerated vSGIs. Otherwise, only
|
||||
* enable it if we present a virtual ITS to the guest.
|
||||
*/
|
||||
if (vgic_supports_direct_msis(kvm)) {
|
||||
ret = vgic_v4_init(kvm);
|
||||
if (ret)
|
||||
goto out;
|
||||
|
|
|
@ -50,7 +50,8 @@ bool vgic_has_its(struct kvm *kvm)
|
|||
|
||||
bool vgic_supports_direct_msis(struct kvm *kvm)
|
||||
{
|
||||
return kvm_vgic_global_state.has_gicv4 && vgic_has_its(kvm);
|
||||
return (kvm_vgic_global_state.has_gicv4_1 ||
|
||||
(kvm_vgic_global_state.has_gicv4 && vgic_has_its(kvm)));
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
Loading…
Reference in a new issue