diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2020-05-08 14:34:03 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-05-19 00:10:34 +1000 |
| commit | 116ac378bb3ff844df333e7609e7604651a0db9d (patch) | |
| tree | d4d450c112d899d277babdfd5d58bce99e637117 /arch/powerpc/lib/code-patching.c | |
| parent | 2576f5f9169620bf329cf1e91086e6041b98e4b2 (diff) | |
powerpc/64s: machine check interrupt update NMI accounting
machine_check_early() is taken as an NMI, so nmi_enter() is used
there. machine_check_exception() is no longer taken as an NMI (it's
invoked via irq_work in the case a machine check hits in kernel mode),
so remove the nmi_enter() from that case.
In NMI context, hash faults don't try to refill the hash table, which
can lead to crashes accessing non-pinned kernel pages. System reset
still has this potential problem.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
[mpe: Drop change in show_regs() which breaks Book3E]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200508043408.886394-12-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/lib/code-patching.c')
0 files changed, 0 insertions, 0 deletions