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| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2020-04-20 05:37:42 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-04-22 20:23:41 +1000 |
| commit | b61c38baa98056d4802ff5be5cfb979efc2d0f7a (patch) | |
| tree | 65d945fe4357e8c7b2cbe23c207fc48cb66f32c3 /lib/mpi/mpiutil.c | |
| parent | 94c0b013c98583614e1ad911e8795ca36da34a85 (diff) | |
powerpc/8xx: Fix STRICT_KERNEL_RWX startup test failure
WRITE_RO lkdtm test works.
But when selecting CONFIG_DEBUG_RODATA_TEST, the kernel reports
rodata_test: test data was not read only
This is because when rodata test runs, there are still old entries
in TLB.
Flush TLB after setting kernel pages RO or NX.
Fixes: d5f17ee96447 ("powerpc/8xx: don't disable large TLBs with CONFIG_STRICT_KERNEL_RWX")
Cc: stable@vger.kernel.org # v5.1+
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/485caac75f195f18c11eb077b0031fdd2bb7fb9e.1587361039.git.christophe.leroy@c-s.fr
Diffstat (limited to 'lib/mpi/mpiutil.c')
0 files changed, 0 insertions, 0 deletions