From: Oliver Upton Date: Wed, 21 Feb 2024 05:42:46 +0000 (+0000) Subject: KVM: arm64: vgic-v3: Iterate the xarray to find pending LPIs X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=49f0a468a158daa10e730e9050587a6014f8cf87;p=linux.git KVM: arm64: vgic-v3: Iterate the xarray to find pending LPIs Start walking the LPI xarray to find pending LPIs in preparation for the removal of the LPI linked-list. Note that the 'basic' iterator is chosen here as each iteration needs to drop the xarray read lock (RCU) as reads/writes to guest memory can potentially block. Reviewed-by: Marc Zyngier Link: https://lore.kernel.org/r/20240221054253.3848076-4-oliver.upton@linux.dev Signed-off-by: Oliver Upton --- diff --git a/arch/arm64/kvm/vgic/vgic-v3.c b/arch/arm64/kvm/vgic/vgic-v3.c index 9465d3706ab9b..4ea3340786b95 100644 --- a/arch/arm64/kvm/vgic/vgic-v3.c +++ b/arch/arm64/kvm/vgic/vgic-v3.c @@ -380,6 +380,7 @@ int vgic_v3_save_pending_tables(struct kvm *kvm) struct vgic_irq *irq; gpa_t last_ptr = ~(gpa_t)0; bool vlpi_avail = false; + unsigned long index; int ret = 0; u8 val; @@ -396,7 +397,7 @@ int vgic_v3_save_pending_tables(struct kvm *kvm) vlpi_avail = true; } - list_for_each_entry(irq, &dist->lpi_list_head, lpi_list) { + xa_for_each(&dist->lpi_xa, index, irq) { int byte_offset, bit_nr; struct kvm_vcpu *vcpu; gpa_t pendbase, ptr;