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Commit 5a63f0ad authored by Peter Xu's avatar Peter Xu Committed by Joerg Roedel
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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: default avatarPeter Xu <peterx@redhat.com>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 2e6c6a86

drivers/iommu/amd_iommu_v2.c

+0 −24
Original line number Diff line number Diff line
@@ -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,

};