| Message ID | 20230509163712.376117-1-robdclark@gmail.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [1/2] iommu/arm-smmu-qcom: Fix missing adreno_smmu's | expand |
On Tue, May 9, 2023 at 9:37 AM Rob Clark <robdclark@gmail.com> wrote: > > From: Rob Clark <robdclark@chromium.org> > > When the special handling of qcom,adreno-smmu was moved into > qcom_smmu_create(), it was overlooked that we didn't have all the > required entries in qcom_smmu_impl_of_match. So we stopped getting > adreno_smmu_priv on sc7180, breaking per-process pgtables. > > Fixes: 30b912a03d91 ("iommu/arm-smmu-qcom: Move the qcom,adreno-smmu check into qcom_smmu_create") > Suggested-by: Lepton Wu <lepton@chromium.org> > Signed-off-by: Rob Clark <robdclark@chromium.org> Any chance I could get an ack for landing this fix via msm-fixes? Broken per-process pgtables is kind of a serious regression.. BR, -R > --- > drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c > index d1b296b95c86..760d9c43dbd2 100644 > --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c > +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c > @@ -496,20 +496,21 @@ static const struct qcom_smmu_match_data qcom_smmu_500_impl0_data = { > /* > * Do not add any more qcom,SOC-smmu-500 entries to this list, unless they need > * special handling and can not be covered by the qcom,smmu-500 entry. > */ > static const struct of_device_id __maybe_unused qcom_smmu_impl_of_match[] = { > { .compatible = "qcom,msm8996-smmu-v2", .data = &msm8996_smmu_data }, > { .compatible = "qcom,msm8998-smmu-v2", .data = &qcom_smmu_v2_data }, > { .compatible = "qcom,qcm2290-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,qdu1000-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,sc7180-smmu-500", .data = &qcom_smmu_500_impl0_data }, > + { .compatible = "qcom,sc7180-smmu-v2", .data = &qcom_smmu_v2_data }, > { .compatible = "qcom,sc7280-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,sc8180x-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,sc8280xp-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,sdm630-smmu-v2", .data = &qcom_smmu_v2_data }, > { .compatible = "qcom,sdm845-smmu-v2", .data = &qcom_smmu_v2_data }, > { .compatible = "qcom,sdm845-smmu-500", .data = &sdm845_smmu_500_data }, > { .compatible = "qcom,sm6115-smmu-500", .data = &qcom_smmu_500_impl0_data}, > { .compatible = "qcom,sm6125-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,sm6350-smmu-v2", .data = &qcom_smmu_v2_data }, > { .compatible = "qcom,sm6350-smmu-500", .data = &qcom_smmu_500_impl0_data }, > @@ -540,12 +541,14 @@ struct arm_smmu_device *qcom_smmu_impl_init(struct arm_smmu_device *smmu) > /* Match platform for ACPI boot */ > if (acpi_match_platform_list(qcom_acpi_platlist) >= 0) > return qcom_smmu_create(smmu, &qcom_smmu_500_impl0_data); > } > #endif > > match = of_match_node(qcom_smmu_impl_of_match, np); > if (match) > return qcom_smmu_create(smmu, match->data); > > + WARN_ON(of_device_is_compatible(np, "qcom,adreno-smmu")); > + > return smmu; > } > -- > 2.40.1 >
On Tue, 9 May 2023 at 19:37, Rob Clark <robdclark@gmail.com> wrote: > > From: Rob Clark <robdclark@chromium.org> > > When the special handling of qcom,adreno-smmu was moved into > qcom_smmu_create(), it was overlooked that we didn't have all the > required entries in qcom_smmu_impl_of_match. So we stopped getting > adreno_smmu_priv on sc7180, breaking per-process pgtables. > > Fixes: 30b912a03d91 ("iommu/arm-smmu-qcom: Move the qcom,adreno-smmu check into qcom_smmu_create") > Suggested-by: Lepton Wu <lepton@chromium.org> > Signed-off-by: Rob Clark <robdclark@chromium.org> > --- > drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c > index d1b296b95c86..760d9c43dbd2 100644 > --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c > +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c > @@ -496,20 +496,21 @@ static const struct qcom_smmu_match_data qcom_smmu_500_impl0_data = { > /* > * Do not add any more qcom,SOC-smmu-500 entries to this list, unless they need > * special handling and can not be covered by the qcom,smmu-500 entry. > */ > static const struct of_device_id __maybe_unused qcom_smmu_impl_of_match[] = { > { .compatible = "qcom,msm8996-smmu-v2", .data = &msm8996_smmu_data }, > { .compatible = "qcom,msm8998-smmu-v2", .data = &qcom_smmu_v2_data }, > { .compatible = "qcom,qcm2290-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,qdu1000-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,sc7180-smmu-500", .data = &qcom_smmu_500_impl0_data }, > + { .compatible = "qcom,sc7180-smmu-v2", .data = &qcom_smmu_v2_data }, > { .compatible = "qcom,sc7280-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,sc8180x-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,sc8280xp-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,sdm630-smmu-v2", .data = &qcom_smmu_v2_data }, > { .compatible = "qcom,sdm845-smmu-v2", .data = &qcom_smmu_v2_data }, > { .compatible = "qcom,sdm845-smmu-500", .data = &sdm845_smmu_500_data }, > { .compatible = "qcom,sm6115-smmu-500", .data = &qcom_smmu_500_impl0_data}, > { .compatible = "qcom,sm6125-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,sm6350-smmu-v2", .data = &qcom_smmu_v2_data }, > { .compatible = "qcom,sm6350-smmu-500", .data = &qcom_smmu_500_impl0_data }, > @@ -540,12 +541,14 @@ struct arm_smmu_device *qcom_smmu_impl_init(struct arm_smmu_device *smmu) > /* Match platform for ACPI boot */ > if (acpi_match_platform_list(qcom_acpi_platlist) >= 0) > return qcom_smmu_create(smmu, &qcom_smmu_500_impl0_data); > } > #endif > > match = of_match_node(qcom_smmu_impl_of_match, np); > if (match) > return qcom_smmu_create(smmu, match->data); > > + WARN_ON(of_device_is_compatible(np, "qcom,adreno-smmu")); Could you please add a comment here, noting the reason? Or maybe we should change that to: if (WARN_ON(...)) return ERR_PTR(-EINVAL); > + > return smmu; > } > -- > 2.40.1 >
On Thu, May 11, 2023 at 7:51 AM Dmitry Baryshkov <dmitry.baryshkov@linaro.org> wrote: > > On Tue, 9 May 2023 at 19:37, Rob Clark <robdclark@gmail.com> wrote: > > > > From: Rob Clark <robdclark@chromium.org> > > > > When the special handling of qcom,adreno-smmu was moved into > > qcom_smmu_create(), it was overlooked that we didn't have all the > > required entries in qcom_smmu_impl_of_match. So we stopped getting > > adreno_smmu_priv on sc7180, breaking per-process pgtables. > > > > Fixes: 30b912a03d91 ("iommu/arm-smmu-qcom: Move the qcom,adreno-smmu check into qcom_smmu_create") > > Suggested-by: Lepton Wu <lepton@chromium.org> > > Signed-off-by: Rob Clark <robdclark@chromium.org> > > --- > > drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 3 +++ > > 1 file changed, 3 insertions(+) > > > > diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c > > index d1b296b95c86..760d9c43dbd2 100644 > > --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c > > +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c > > @@ -496,20 +496,21 @@ static const struct qcom_smmu_match_data qcom_smmu_500_impl0_data = { > > /* > > * Do not add any more qcom,SOC-smmu-500 entries to this list, unless they need > > * special handling and can not be covered by the qcom,smmu-500 entry. > > */ > > static const struct of_device_id __maybe_unused qcom_smmu_impl_of_match[] = { > > { .compatible = "qcom,msm8996-smmu-v2", .data = &msm8996_smmu_data }, > > { .compatible = "qcom,msm8998-smmu-v2", .data = &qcom_smmu_v2_data }, > > { .compatible = "qcom,qcm2290-smmu-500", .data = &qcom_smmu_500_impl0_data }, > > { .compatible = "qcom,qdu1000-smmu-500", .data = &qcom_smmu_500_impl0_data }, > > { .compatible = "qcom,sc7180-smmu-500", .data = &qcom_smmu_500_impl0_data }, > > + { .compatible = "qcom,sc7180-smmu-v2", .data = &qcom_smmu_v2_data }, > > { .compatible = "qcom,sc7280-smmu-500", .data = &qcom_smmu_500_impl0_data }, > > { .compatible = "qcom,sc8180x-smmu-500", .data = &qcom_smmu_500_impl0_data }, > > { .compatible = "qcom,sc8280xp-smmu-500", .data = &qcom_smmu_500_impl0_data }, > > { .compatible = "qcom,sdm630-smmu-v2", .data = &qcom_smmu_v2_data }, > > { .compatible = "qcom,sdm845-smmu-v2", .data = &qcom_smmu_v2_data }, > > { .compatible = "qcom,sdm845-smmu-500", .data = &sdm845_smmu_500_data }, > > { .compatible = "qcom,sm6115-smmu-500", .data = &qcom_smmu_500_impl0_data}, > > { .compatible = "qcom,sm6125-smmu-500", .data = &qcom_smmu_500_impl0_data }, > > { .compatible = "qcom,sm6350-smmu-v2", .data = &qcom_smmu_v2_data }, > > { .compatible = "qcom,sm6350-smmu-500", .data = &qcom_smmu_500_impl0_data }, > > @@ -540,12 +541,14 @@ struct arm_smmu_device *qcom_smmu_impl_init(struct arm_smmu_device *smmu) > > /* Match platform for ACPI boot */ > > if (acpi_match_platform_list(qcom_acpi_platlist) >= 0) > > return qcom_smmu_create(smmu, &qcom_smmu_500_impl0_data); > > } > > #endif > > > > match = of_match_node(qcom_smmu_impl_of_match, np); > > if (match) > > return qcom_smmu_create(smmu, match->data); > > > > + WARN_ON(of_device_is_compatible(np, "qcom,adreno-smmu")); > > Could you please add a comment here, noting the reason? Or maybe we > should change that to: > if (WARN_ON(...)) > return ERR_PTR(-EINVAL); I'll add a comment. Not having an iommu is even worse, so returning an error isn't a good idea. I just wanted to leave some breadcrumbs so people can see where the problem actually is if per-process pgtables break again. BR, -R > > > + > > return smmu; > > } > > -- > > 2.40.1 > > > > > -- > With best wishes > Dmitry
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c index d1b296b95c86..760d9c43dbd2 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c @@ -496,20 +496,21 @@ static const struct qcom_smmu_match_data qcom_smmu_500_impl0_data = { /* * Do not add any more qcom,SOC-smmu-500 entries to this list, unless they need * special handling and can not be covered by the qcom,smmu-500 entry. */ static const struct of_device_id __maybe_unused qcom_smmu_impl_of_match[] = { { .compatible = "qcom,msm8996-smmu-v2", .data = &msm8996_smmu_data }, { .compatible = "qcom,msm8998-smmu-v2", .data = &qcom_smmu_v2_data }, { .compatible = "qcom,qcm2290-smmu-500", .data = &qcom_smmu_500_impl0_data }, { .compatible = "qcom,qdu1000-smmu-500", .data = &qcom_smmu_500_impl0_data }, { .compatible = "qcom,sc7180-smmu-500", .data = &qcom_smmu_500_impl0_data }, + { .compatible = "qcom,sc7180-smmu-v2", .data = &qcom_smmu_v2_data }, { .compatible = "qcom,sc7280-smmu-500", .data = &qcom_smmu_500_impl0_data }, { .compatible = "qcom,sc8180x-smmu-500", .data = &qcom_smmu_500_impl0_data }, { .compatible = "qcom,sc8280xp-smmu-500", .data = &qcom_smmu_500_impl0_data }, { .compatible = "qcom,sdm630-smmu-v2", .data = &qcom_smmu_v2_data }, { .compatible = "qcom,sdm845-smmu-v2", .data = &qcom_smmu_v2_data }, { .compatible = "qcom,sdm845-smmu-500", .data = &sdm845_smmu_500_data }, { .compatible = "qcom,sm6115-smmu-500", .data = &qcom_smmu_500_impl0_data}, { .compatible = "qcom,sm6125-smmu-500", .data = &qcom_smmu_500_impl0_data }, { .compatible = "qcom,sm6350-smmu-v2", .data = &qcom_smmu_v2_data }, { .compatible = "qcom,sm6350-smmu-500", .data = &qcom_smmu_500_impl0_data }, @@ -540,12 +541,14 @@ struct arm_smmu_device *qcom_smmu_impl_init(struct arm_smmu_device *smmu) /* Match platform for ACPI boot */ if (acpi_match_platform_list(qcom_acpi_platlist) >= 0) return qcom_smmu_create(smmu, &qcom_smmu_500_impl0_data); } #endif match = of_match_node(qcom_smmu_impl_of_match, np); if (match) return qcom_smmu_create(smmu, match->data); + WARN_ON(of_device_is_compatible(np, "qcom,adreno-smmu")); + return smmu; }