Re: [PATCH v3 3/7] iommu/arm-smmu-v3: Introduce a per-domain arm_smmu_invs array
From: Nicolin Chen <hidden>
Date: 2025-10-16 21:32:21
Also in:
linux-iommu, lkml
On Wed, Oct 15, 2025 at 12:42:48PM -0700, Nicolin Chen wrote:
+size_t arm_smmu_invs_unref(struct arm_smmu_invs *invs,
+ struct arm_smmu_invs *to_unref,
+ void (*flush_fn)(struct arm_smmu_inv *inv))
+{
+ unsigned long flags;
+ size_t num_trashes = 0;
+ size_t num_invs = 0;
+ size_t i, j;
+
+ for (i = j = 0; i != invs->num_invs || j != to_unref->num_invs;) {
+ int cmp;
+
+ /* Skip any existing trash entry */
+ if (cmp <= 0 && !refcount_read(&invs->inv[i].users)) {
+ num_trashes++;
+ i++;
+ continue;
+ }
+
+ cmp = arm_smmu_invs_cmp(invs, i, to_unref, j);This should be moved upwards to "int cmp" before if. Will fix in v4. Nicolin