iommu/amd: Do not try copy old DTE resume path

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In suspend/resume path, no need to copy old DTE (early_enable_iommus()).
Just need to reload IOMMU hardware.

This is the side effect of commit 3ac3e5ee5e ("iommu/amd: Copy old
trans table from old kernel") which changed early_enable_iommus() but
missed to fix enable_iommus().

Resume path continue to work as 'amd_iommu_pre_enabled' is set to false
and copy_device_table() will fail. It will just re-loaded IOMMU. Hence I
think we don't need to backport this to stable tree.

Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Link: https://lore.kernel.org/r/20241016084958.99727-1-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Vasant Hegde 2024-10-16 08:49:58 +00:00 • committed by Joerg Roedel

parent 5ce73c524f

commit 3f6eeada69

1 changed files with 2 additions and 6 deletions

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drivers/iommu/amd/init.c

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