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| author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2018-05-30 19:22:50 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-06-03 20:40:25 +1000 |
| commit | 98fd72fe82527fd26618062b60cfd329451f2329 (patch) | |
| tree | 0f9638aec6beff57c109c4a687cf3e052d95ccf7 /tools/perf/scripts/python/bin/stackcollapse-report | |
| parent | powerpc/xmon: use match_string() helper (diff) | |
| download | linux-98fd72fe82527fd26618062b60cfd329451f2329.tar.gz linux-98fd72fe82527fd26618062b60cfd329451f2329.zip | |
powerpc/powernv/ioda2: Remove redundant free of TCE pages
When IODA2 creates a PE, it creates an IOMMU table with it_ops::free
set to pnv_ioda2_table_free() which calls pnv_pci_ioda2_table_free_pages().
Since iommu_tce_table_put() calls it_ops::free when the last reference
to the table is released, explicit call to pnv_pci_ioda2_table_free_pages()
is not needed so let's remove it.
This should fix double free in the case of PCI hotuplug as
pnv_pci_ioda2_table_free_pages() does not reset neither
iommu_table::it_base nor ::it_size.
This was not exposed by SRIOV as it uses different code path via
pnv_pcibios_sriov_disable().
IODA1 does not inialize it_ops::free so it does not have this issue.
Fixes: c5f7700bbd2e ("powerpc/powernv: Dynamically release PE")
Cc: stable@vger.kernel.org # v4.8+
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-report')
0 files changed, 0 insertions, 0 deletions