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authorPeter Xu <peterx@redhat.com>2019-01-30 08:57:58 +0300
committerJoerg Roedel <jroedel@suse.de>2019-01-30 19:30:46 +0300
commit5a63f0adebe7d941de29304c526bfe184c43bdec (patch)
tree35369fcc43709d4a07c9ab20ba690e93820d5a34 /drivers/iommu
parent2e6c6a8657e8709ce363a62238e792918dd158b3 (diff)
downloadlinux-5a63f0adebe7d941de29304c526bfe184c43bdec.tar.xz
iommu/amd: Remove clear_flush_young notifier
AMD IOMMU driver is using the clear_flush_young() to do cache flushing but that's actually already covered by invalidate_range(). Remove the extra notifier and the chunks. Signed-off-by: Peter Xu <peterx@redhat.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/amd_iommu_v2.c24
1 files changed, 0 insertions, 24 deletions
diff --git a/drivers/iommu/amd_iommu_v2.c b/drivers/iommu/amd_iommu_v2.c
index 23dae9348ace..5d7ef750e4a0 100644
--- a/drivers/iommu/amd_iommu_v2.c
+++ b/drivers/iommu/amd_iommu_v2.c
@@ -370,29 +370,6 @@ static struct pasid_state *mn_to_state(struct mmu_notifier *mn)
return container_of(mn, struct pasid_state, mn);
}
-static void __mn_flush_page(struct mmu_notifier *mn,
- unsigned long address)
-{
- struct pasid_state *pasid_state;
- struct device_state *dev_state;
-
- pasid_state = mn_to_state(mn);
- dev_state = pasid_state->device_state;
-
- amd_iommu_flush_page(dev_state->domain, pasid_state->pasid, address);
-}
-
-static int mn_clear_flush_young(struct mmu_notifier *mn,
- struct mm_struct *mm,
- unsigned long start,
- unsigned long end)
-{
- for (; start < end; start += PAGE_SIZE)
- __mn_flush_page(mn, start);
-
- return 0;
-}
-
static void mn_invalidate_range(struct mmu_notifier *mn,
struct mm_struct *mm,
unsigned long start, unsigned long end)
@@ -430,7 +407,6 @@ static void mn_release(struct mmu_notifier *mn, struct mm_struct *mm)
static const struct mmu_notifier_ops iommu_mn = {
.release = mn_release,
- .clear_flush_young = mn_clear_flush_young,
.invalidate_range = mn_invalidate_range,
};