linux-stable.git/tools/testing/selftests/powerpc, branch v5.12.2

Merge tag 'powerpc-5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2021-02-22T22:34:00+00:00

Pull powerpc updates from Michael Ellerman:

 - A large series adding wrappers for our interrupt handlers, so that
   irq/nmi/user tracking can be isolated in the wrappers rather than
   spread in each handler.

 - Conversion of the 32-bit syscall handling into C.

 - A series from Nick to streamline our TLB flushing when using the
   Radix MMU.

 - Switch to using queued spinlocks by default for 64-bit server CPUs.

 - A rework of our PCI probing so that it happens later in boot, when
   more generic infrastructure is available.

 - Two small fixes to allow 32-bit little-endian processes to run on
   64-bit kernels.

 - Other smaller features, fixes & cleanups.

Thanks to: Alexey Kardashevskiy, Ananth N Mavinakayanahalli, Aneesh
Kumar K.V, Athira Rajeev, Bhaskar Chowdhury, Cédric Le Goater, Chengyang
Fan, Christophe Leroy, Christopher M. Riedl, Fabiano Rosas, Florian
Fainelli, Frederic Barrat, Ganesh Goudar, Hari Bathini, Jiapeng Chong,
Joseph J Allen, Kajol Jain, Markus Elfring, Michal Suchanek, Nathan
Lynch, Naveen N. Rao, Nicholas Piggin, Oliver O'Halloran, Pingfan Liu,
Po-Hsu Lin, Qian Cai, Ram Pai, Randy Dunlap, Sandipan Das, Stephen
Rothwell, Tyrel Datwyler, Will Springer, Yury Norov, and Zheng Yongjun.

* tag 'powerpc-5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (188 commits)
  powerpc/perf: Adds support for programming of Thresholding in P10
  powerpc/pci: Remove unimplemented prototypes
  powerpc/uaccess: Merge raw_copy_to_user_allowed() into raw_copy_to_user()
  powerpc/uaccess: Merge __put_user_size_allowed() into __put_user_size()
  powerpc/uaccess: get rid of small constant size cases in raw_copy_{to,from}_user()
  powerpc/64: Fix stack trace not displaying final frame
  powerpc/time: Remove get_tbl()
  powerpc/time: Avoid using get_tbl()
  spi: mpc52xx: Avoid using get_tbl()
  powerpc/syscall: Avoid storing 'current' in another pointer
  powerpc/32: Handle bookE debugging in C in syscall entry/exit
  powerpc/syscall: Do not check unsupported scv vector on PPC32
  powerpc/32: Remove the counter in global_dbcr0
  powerpc/32: Remove verification of MSR_PR on syscall in the ASM entry
  powerpc/syscall: implement system call entry/exit logic in C for PPC32
  powerpc/32: Always save non volatile GPRs at syscall entry
  powerpc/syscall: Change condition to check MSR_RI
  powerpc/syscall: Save r3 in regs->orig_r3
  powerpc/syscall: Use is_compat_task()
  powerpc/syscall: Make interrupt.c buildable on PPC32
  ...

selftests/powerpc: Add VF recovery tests

2021-01-31T11:35:47+00:00

The basic EEH test ignores VFs since we the way the eeh_dev_break debugfs
interface works means that if multiple VFs are enabled we may cause errors
on all them them. However, we can work around that by only enabling a
single VF at a time.

This patch adds some infrastructure for finding SR-IOV capable devices and
enabling / disabling VFs so we can exercise the VF specific EEH recovery
paths. Two new tests are added, one for testing EEH aware devices and one
for EEH un-aware VFs.

Signed-off-by: Oliver O'Halloran 
Signed-off-by: Michael Ellerman 
Link: https://lore.kernel.org/r/20201103044503.917128-3-oohall@gmail.com

selftests/powerpc: Use stderr for debug messages in eeh-functions

2021-01-31T11:35:47+00:00

We want to use stdout to return lists of devices, etc so log debug / status
messages to stderr rather than stdout.

Signed-off-by: Oliver O'Halloran 
Signed-off-by: Michael Ellerman 
Link: https://lore.kernel.org/r/20201103044503.917128-2-oohall@gmail.com

selftests/powerpc: Hoist helper code out of eeh-basic

2021-01-31T11:35:47+00:00

Hoist some of the useful test environment checking and prep code into
eeh-functions.sh so they can be reused in other tests.

Signed-off-by: Oliver O'Halloran 
Signed-off-by: Michael Ellerman 
Link: https://lore.kernel.org/r/20201103044503.917128-1-oohall@gmail.com

selftests/powerpc: Only test lwm/stmw on big endian

2021-01-20T00:49:55+00:00

Newer binutils (>= 2.36) refuse to assemble lmw/stmw when building in
little endian mode. That breaks compilation of our alignment handler
test:

  /tmp/cco4l14N.s: Assembler messages:
  /tmp/cco4l14N.s:1440: Error: `lmw' invalid when little-endian
  /tmp/cco4l14N.s:1814: Error: `stmw' invalid when little-endian
  make[2]: *** [../../lib.mk:139: /output/kselftest/powerpc/alignment/alignment_handler] Error 1

These tests do pass on little endian machines, as the kernel will
still emulate those instructions even when running little
endian (which is arguably a kernel bug).

But we don't really need to test that case, so ifdef those
instructions out to get the alignment test building again.

Reported-by: Libor Pechacek 
Signed-off-by: Michael Ellerman 
Tested-by: Libor Pechacek 
Link: https://lore.kernel.org/r/20210119041800.3093047-1-mpe@ellerman.id.au

selftests/powerpc: Fix exit status of pkey tests

2021-01-18T21:04:32+00:00

Since main() does not return a value explicitly, the
return values from FAIL_IF() conditions are ignored
and the tests can still pass irrespective of failures.
This makes sure that we always explicitly return the
correct test exit status.

Fixes: 1addb6444791 ("selftests/powerpc: Add test for execute-disabled pkeys")
Fixes: c27f2fd1705a ("selftests/powerpc: Add test for pkey siginfo verification")
Reported-by: Eirik Fuller 
Signed-off-by: Sandipan Das 
Signed-off-by: Michael Ellerman 
Link: https://lore.kernel.org/r/20210118093145.10134-1-sandipan@linux.ibm.com

selftests/powerpc: Make the test check in eeh-basic.sh posix compliant

2021-01-04T13:00:29+00:00

The == operand is a bash extension, thus this will fail on Ubuntu
with:
  ./eeh-basic.sh: 89: test: 2: unexpected operator

As the /bin/sh on Ubuntu is pointed to DASH.

Use -eq to fix this posix compatibility issue.

Fixes: 996f9e0f93f162 ("selftests/powerpc: Fix eeh-basic.sh exit codes")
Signed-off-by: Po-Hsu Lin 
Reviewed-by: Frederic Barrat 
Signed-off-by: Michael Ellerman 
Link: https://lore.kernel.org/r/20201228043459.14281-1-po-hsu.lin@canonical.com

selftests/powerpc: Fix uninitialized variable warning

2020-12-03T14:01:21+00:00

Patch fixes uninitialized variable warning in bad_accesses test
which causes the selftests build to fail in older distibutions

bad_accesses.c: In function ‘bad_access’:
bad_accesses.c:52:9: error: ‘x’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
   printf("Bad - no SEGV! (%c)\n", x);
         ^
cc1: all warnings being treated as errors

Signed-off-by: Harish 
Signed-off-by: Michael Ellerman 
Link: https://lore.kernel.org/r/20201201092403.238182-1-harish@linux.ibm.com

selftests/powerpc: update .gitignore

2020-12-03T14:01:21+00:00

I did an in-place build of the self-tests and found that it left
the tree dirty.

Add missed test binaries to .gitignore

Signed-off-by: Daniel Axtens 
Signed-off-by: Michael Ellerman 
Link: https://lore.kernel.org/r/20201201144427.1228745-1-dja@axtens.net

Merge branch 'fixes' into next

2020-11-25T12:17:31+00:00

Merge our fixes branch, in particular to bring in the changes for the
entry/uaccess flush.