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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2020-05-28 10:17:04 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-06-22 09:33:07 +0200 |
| commit | 32a65dcf6910a6b8f5544ebf86b2ae27b8ca0fdc (patch) | |
| tree | dc97084f3f6eef47c81cddf0e54e4f5638270005 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | d7c98b30124914727d147da691bc15d31a8859cb (diff) | |
powerpc/32: Disable KASAN with pages bigger than 16k
commit 888468ce725a4cd56d72dc7e5096078f7a9251a0 upstream.
Mapping of early shadow area is implemented by using a single static
page table having all entries pointing to the same early shadow page.
The shadow area must therefore occupy full PGD entries.
The shadow area has a size of 128MB starting at 0xf8000000.
With 4k pages, a PGD entry is 4MB
With 16k pages, a PGD entry is 64MB
With 64k pages, a PGD entry is 1GB which is too big.
Until we rework the early shadow mapping, disable KASAN when the page
size is too big.
Fixes: 2edb16efc899 ("powerpc/32: Add KASAN support")
Cc: stable@vger.kernel.org # v5.2+
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/7195fcde7314ccbf7a081b356084a69d421b10d4.1590660977.git.christophe.leroy@csgroup.eu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions