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authorZenghui Yu <yuzenghui@huawei.com>2024-08-17 18:15:41 +0800
committerOliver Upton <oliver.upton@linux.dev>2024-08-19 17:04:36 +0000
commit2240a50e6294214de791729e9dcba6880fa7e44e (patch)
treea69e0365c0e1a733de41b733896b443843f99e0f /arch
parent9eb18136af9fe4dd688724070f2bfba271bd1542 (diff)
KVM: arm64: vgic-debug: Don't put unmarked LPIs
If there were LPIs being mapped behind our back (i.e., between .start() and .stop()), we would put them at iter_unmark_lpis() without checking if they were actually *marked*, which is obviously not good. Switch to use the xa_for_each_marked() iterator to fix it. Cc: stable@vger.kernel.org Fixes: 85d3ccc8b75b ("KVM: arm64: vgic-debug: Use an xarray mark for debug iterator") Signed-off-by: Zenghui Yu <yuzenghui@huawei.com> Reviewed-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20240817101541.1664-1-yuzenghui@huawei.com Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm64/kvm/vgic/vgic-debug.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/kvm/vgic/vgic-debug.c b/arch/arm64/kvm/vgic/vgic-debug.c
index bc74d06398ef..e1397ab2072a 100644
--- a/arch/arm64/kvm/vgic/vgic-debug.c
+++ b/arch/arm64/kvm/vgic/vgic-debug.c
@@ -85,7 +85,7 @@ static void iter_unmark_lpis(struct kvm *kvm)
struct vgic_irq *irq;
unsigned long intid;
- xa_for_each(&dist->lpi_xa, intid, irq) {
+ xa_for_each_marked(&dist->lpi_xa, intid, irq, LPI_XA_MARK_DEBUG_ITER) {
xa_clear_mark(&dist->lpi_xa, intid, LPI_XA_MARK_DEBUG_ITER);
vgic_put_irq(kvm, irq);
}