iommu/amd: Simplify pagetable freeing

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For reasons unclear, pagetable freeing is an effectively recursive
method implemented via an elaborate system of templated functions that
turns out to account for 25% of the object file size. Implementing it
using regular straightforward recursion makes the code simpler, and
seems like a good thing to do before we work on it further. As part of
that, also fix the types to avoid all the needless casting back and
forth which just gets in the way.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/d3d00c9f3fa0df4756b867072c201e6e82f9ce39.1639753638.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Robin Murphy 2021-12-17 15:30:58 +00:00 • committed by Joerg Roedel

parent 649ad9835a

commit 6b3106e9ba

1 changed files with 34 additions and 48 deletions

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drivers/iommu/amd/io_pgtable.c

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