On Tue, Feb 25, 2025 at 09:25:40AM -0800, Nicolin Chen wrote: > Use it to store all vSMMU-related data. The vsid (Virtual Stream ID) will > be the first use case. Since the vsid reader will be the eventq handler > that already holds a streams_mutex, reuse that to fenche the vmaster too. > > Also add a pair of arm_smmu_attach_prepare/commit_vmaster helpers to set > or unset the master->vmaster point. Put these helpers inside the existing > arm_smmu_attach_prepare/commit(). > > For identity/blocked ops that don't call arm_smmu_attach_prepare/commit(), > add a simpler arm_smmu_master_clear_vmaster helper to unset the vmaster. > > Reviewed-by: Jason Gunthorpe <j...@nvidia.com> > Reviewed-by: Pranjal Shrivastavat <pr...@google.com> > Signed-off-by: Nicolin Chen <nicol...@nvidia.com> > --- > drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 28 ++++++++++++ > .../arm/arm-smmu-v3/arm-smmu-v3-iommufd.c | 45 +++++++++++++++++++ > drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 18 +++++++- > 3 files changed, 90 insertions(+), 1 deletion(-) >
Apologies for my spelling error in [1]. It's supposed to be: Reviewed-by: Pranjal Shrivastava <pr...@google.com> For all the other patches too. Correct spelling in [2]. Thanks, Praan [1] https://lore.kernel.org/all/z73zvibsxzjmc...@google.com/ [2] https://lore.kernel.org/all/z730m3xptvdro...@google.com/
