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author | Joerg Roedel <jroedel@suse.de> | 2023-10-26 18:05:58 +0300 |
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committer | Joerg Roedel <jroedel@suse.de> | 2023-10-26 18:05:58 +0300 |
commit | 3613047280ec42a4e1350fdc1a6dd161ff4008cc (patch) | |
tree | 6cf2f03f518537f3229e6066a8b2638755f0bb48 /drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | |
parent | bbc70e0aec287e164344b1a071bd46466a4f29b3 (diff) | |
parent | 05d3ef8bba77c1b5f98d941d8b2d4aeab8118ef1 (diff) | |
download | linux-3613047280ec42a4e1350fdc1a6dd161ff4008cc.tar.xz |
Merge tag 'v6.6-rc7' into core
Linux 6.6-rc7
Diffstat (limited to 'drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c')
-rw-r--r-- | drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c index e82bf1c449a3..bd0a596f9863 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -1895,18 +1895,23 @@ static void __arm_smmu_tlb_inv_range(struct arm_smmu_cmdq_ent *cmd, /* Get the leaf page size */ tg = __ffs(smmu_domain->domain.pgsize_bitmap); + num_pages = size >> tg; + /* Convert page size of 12,14,16 (log2) to 1,2,3 */ cmd->tlbi.tg = (tg - 10) / 2; /* - * Determine what level the granule is at. For non-leaf, io-pgtable - * assumes .tlb_flush_walk can invalidate multiple levels at once, - * so ignore the nominal last-level granule and leave TTL=0. + * Determine what level the granule is at. For non-leaf, both + * io-pgtable and SVA pass a nominal last-level granule because + * they don't know what level(s) actually apply, so ignore that + * and leave TTL=0. However for various errata reasons we still + * want to use a range command, so avoid the SVA corner case + * where both scale and num could be 0 as well. */ if (cmd->tlbi.leaf) cmd->tlbi.ttl = 4 - ((ilog2(granule) - 3) / (tg - 3)); - - num_pages = size >> tg; + else if ((num_pages & CMDQ_TLBI_RANGE_NUM_MAX) == 1) + num_pages++; } cmds.num = 0; |