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From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>,
	Ganesh Goudar <ganeshgr@linux.ibm.com>,
	Nicholas Piggin <npiggin@gmail.com>
Subject: [PATCH v3 00/15] powerpc/64: machine check and system reset fixes
Date: Tue,  7 Apr 2020 15:16:21 +1000	[thread overview]
Message-ID: <20200407051636.648369-1-npiggin@gmail.com> (raw)

There's a bunch of problems we hit bringing up fwnmi sreset and testing
with mce injection on QEMU. Mostly pseries issues.

This series of fixes applies on top of next-test, the machine
check reconcile patch won't apply cleanly to previous kernels but
it might want to be backported. We can do that after upstreaming.

This doesn't solve all known problems yet, but fwnmi machine check
and system reset injection in QEMU is significantly better. There
will be more to come but these should be ready for review now.

Thanks,
Nick

v3:
- Addressed comments and fixed compile bugs.
- Didn't convert to pr_err because it's an existing printk that was
  moved. A cleanup to convert printks could go afterward.

v2:
- Added a couple more fixes
- Review comments and tags
- Re-tested with some fixes to my qemu machine check injection patches


Nicholas Piggin (15):
  powerpc/64s/exception: Fix machine check no-loss idle wakeup
  powerpc/64s/exceptions: Fix in_mce accounting in unrecoverable path
  powerpc/64s/exceptions: Change irq reconcile for NMIs from reusing
    _DAR to RESULT
  powerpc/64s/exceptions: machine check reconcile irq state
  powerpc/pseries/ras: avoid calling rtas_token in NMI paths
  powerpc/pseries/ras: FWNMI_VALID off by one
  powerpc/pseries/ras: fwnmi avoid modifying r3 in error case
  powerpc/pseries/ras: fwnmi sreset should not interlock
  powerpc/pseries: limit machine check stack to 4GB
  powerpc/pseries: machine check use rtas_call_unlocked with args on
    stack
  powerpc/64s: machine check interrupt update NMI accounting
  powerpc: ftrace_enabled helper
  powerpc/64s: machine check do not trace real-mode handler
  powerpc/64s: system reset do not trace
  powerpc: make unrecoverable NMIs die instead of panic

 arch/powerpc/include/asm/firmware.h    |  1 +
 arch/powerpc/include/asm/ftrace.h      | 14 ++++++
 arch/powerpc/kernel/exceptions-64s.S   | 47 +++++++++++++++-----
 arch/powerpc/kernel/mce.c              | 16 ++++++-
 arch/powerpc/kernel/process.c          |  2 +-
 arch/powerpc/kernel/setup_64.c         | 15 +++++--
 arch/powerpc/kernel/traps.c            | 24 ++++-------
 arch/powerpc/platforms/pseries/ras.c   | 60 +++++++++++++++++++-------
 arch/powerpc/platforms/pseries/setup.c | 14 ++++--
 9 files changed, 142 insertions(+), 51 deletions(-)

-- 
2.23.0


             reply	other threads:[~2020-04-07  5:20 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-07  5:16 Nicholas Piggin [this message]
2020-04-07  5:16 ` [PATCH v3 01/15] powerpc/64s/exception: Fix machine check no-loss idle wakeup Nicholas Piggin
2020-04-07  5:16 ` [PATCH v3 02/15] powerpc/64s/exceptions: Fix in_mce accounting in unrecoverable path Nicholas Piggin
2020-04-07  5:16 ` [PATCH v3 03/15] powerpc/64s/exceptions: Change irq reconcile for NMIs from reusing _DAR to RESULT Nicholas Piggin
2020-04-07  5:16 ` [PATCH v3 04/15] powerpc/64s/exceptions: machine check reconcile irq state Nicholas Piggin
2020-04-07  5:16 ` [PATCH v3 05/15] powerpc/pseries/ras: avoid calling rtas_token in NMI paths Nicholas Piggin
2020-04-07  5:42   ` Christophe Leroy
2020-04-07  5:16 ` [PATCH v3 06/15] powerpc/pseries/ras: FWNMI_VALID off by one Nicholas Piggin
2020-04-07  5:16 ` [PATCH v3 07/15] powerpc/pseries/ras: fwnmi avoid modifying r3 in error case Nicholas Piggin
2020-04-07  5:16 ` [PATCH v3 08/15] powerpc/pseries/ras: fwnmi sreset should not interlock Nicholas Piggin
2020-04-07  5:41   ` Christophe Leroy
2020-04-07  5:16 ` [PATCH v3 09/15] powerpc/pseries: limit machine check stack to 4GB Nicholas Piggin
2020-04-07  5:38   ` Christophe Leroy
2020-04-07  5:16 ` [PATCH v3 10/15] powerpc/pseries: machine check use rtas_call_unlocked with args on stack Nicholas Piggin
2020-04-07  5:16 ` [PATCH v3 11/15] powerpc/64s: machine check interrupt update NMI accounting Nicholas Piggin
2020-04-07  5:37   ` Christophe Leroy
2020-05-06  3:50     ` Nicholas Piggin
2020-04-12  8:46   ` kbuild test robot
2020-04-12  8:46     ` kbuild test robot
2020-04-07  5:16 ` [PATCH v3 12/15] powerpc: ftrace_enabled helper Nicholas Piggin
2020-04-07  5:45   ` Christophe Leroy
2020-04-07  5:16 ` [PATCH v3 13/15] powerpc/64s: machine check do not trace real-mode handler Nicholas Piggin
2020-04-07  5:45   ` Christophe Leroy
2020-04-07  5:16 ` [PATCH v3 14/15] powerpc/64s: system reset do not trace Nicholas Piggin
2020-04-07  5:45   ` Christophe Leroy
2020-04-07  5:16 ` [PATCH v3 15/15] powerpc: make unrecoverable NMIs die instead of panic Nicholas Piggin
2020-04-07  5:46   ` Christophe Leroy

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