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iommu/amd: Remove redundant domain flush from attach_device()

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Domain flush was introduced in attach_device() path to handle kdump
scenario. Later init code was enhanced to handle kdump scenario where
it also takes care of flushing everything including TLB
(see early_enable_iommus()).

Hence remove redundant flush from attach_device() function.

Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20231122090215.6191-3-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Vasant Hegde 2023-11-22 09:02:08 +00:00 committed by Joerg Roedel
parent af3263758b
commit 3f2571fed2
1 changed files with 0 additions and 9 deletions
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9
drivers/iommu/amd/iommu.c
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@ -1896,15 +1896,6 @@ static int attach_device(struct device *dev,
do_attach(dev_data, domain);
/*
* We might boot into a crash-kernel here. The crashed kernel
* left the caches in the IOMMU dirty. So we have to flush
* here to evict all dirty stuff.
*/
amd_iommu_domain_flush_tlb_pde(domain);
amd_iommu_domain_flush_complete(domain);
out:
spin_unlock(&dev_data->lock);