diff options
| author | Will Deacon <will@kernel.org> | 2019-07-02 16:44:06 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2019-07-29 17:22:52 +0100 |
| commit | 56f8af5e9d38f120cba2c2adb0786fa2dbc901a4 (patch) | |
| tree | b46a5f01874bd1543e610949be6171296cd6300e /drivers/iommu/amd_iommu.c | |
| parent | 4fcf8544fc677fc8af135f1d86b3ba69c4ad429d (diff) | |
iommu: Pass struct iommu_iotlb_gather to ->unmap() and ->iotlb_sync()
To allow IOMMU drivers to batch up TLB flushing operations and postpone
them until ->iotlb_sync() is called, extend the prototypes for the
->unmap() and ->iotlb_sync() IOMMU ops callbacks to take a pointer to
the current iommu_iotlb_gather structure.
All affected IOMMU drivers are updated, but there should be no
functional change since the extra parameter is ignored for now.
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/iommu/amd_iommu.c')
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index f93b148cf55e..29eeea914660 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -3055,7 +3055,8 @@ static int amd_iommu_map(struct iommu_domain *dom, unsigned long iova, } static size_t amd_iommu_unmap(struct iommu_domain *dom, unsigned long iova, - size_t page_size) + size_t page_size, + struct iommu_iotlb_gather *gather) { struct protection_domain *domain = to_pdomain(dom); size_t unmap_size; @@ -3196,6 +3197,12 @@ static void amd_iommu_flush_iotlb_all(struct iommu_domain *domain) domain_flush_complete(dom); } +static void amd_iommu_iotlb_sync(struct iommu_domain *domain, + struct iommu_iotlb_gather *gather) +{ + amd_iommu_flush_iotlb_all(domain); +} + const struct iommu_ops amd_iommu_ops = { .capable = amd_iommu_capable, .domain_alloc = amd_iommu_domain_alloc, @@ -3214,7 +3221,7 @@ const struct iommu_ops amd_iommu_ops = { .is_attach_deferred = amd_iommu_is_attach_deferred, .pgsize_bitmap = AMD_IOMMU_PGSIZES, .flush_iotlb_all = amd_iommu_flush_iotlb_all, - .iotlb_sync = amd_iommu_flush_iotlb_all, + .iotlb_sync = amd_iommu_iotlb_sync, }; /***************************************************************************** |