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authorRobin Murphy <robin.murphy@arm.com>2020-11-25 20:29:39 +0300
committerWill Deacon <will@kernel.org>2020-12-08 18:23:37 +0300
commitfefe8527a1e0e0014946c6b5b3b2e40cb32bb5d3 (patch)
tree15a5bba2e250001761f5521ec45cc4aa12fc938a /drivers/iommu/io-pgtable-arm.c
parentc74009f5290d6679ecb865b5d795508df7ad599f (diff)
downloadlinux-fefe8527a1e0e0014946c6b5b3b2e40cb32bb5d3.tar.xz
iommu/io-pgtable: Remove tlb_flush_leaf
The only user of tlb_flush_leaf is a particularly hairy corner of the Arm short-descriptor code, which wants a synchronous invalidation to minimise the races inherent in trying to split a large page mapping. This is already far enough into "here be dragons" territory that no sensible caller should ever hit it, and thus it really doesn't need optimising. Although using tlb_flush_walk there may technically be more heavyweight than needed, it does the job and saves everyone else having to carry around useless baggage. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Reviewed-by: Steven Price <steven.price@arm.com> Link: https://lore.kernel.org/r/9844ab0c5cb3da8b2f89c6c2da16941910702b41.1606324115.git.robin.murphy@arm.com Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/iommu/io-pgtable-arm.c')
-rw-r--r--drivers/iommu/io-pgtable-arm.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c
index 135f57b37bbd..49ad8d2a82df 100644
--- a/drivers/iommu/io-pgtable-arm.c
+++ b/drivers/iommu/io-pgtable-arm.c
@@ -1085,7 +1085,6 @@ static void __init dummy_tlb_add_page(struct iommu_iotlb_gather *gather,
static const struct iommu_flush_ops dummy_tlb_ops __initconst = {
.tlb_flush_all = dummy_tlb_flush_all,
.tlb_flush_walk = dummy_tlb_flush,
- .tlb_flush_leaf = dummy_tlb_flush,
.tlb_add_page = dummy_tlb_add_page,
};