linux-stable.git/tools/testing/selftests/powerpc/alignment/alignment_handler.c, branch linux-5.0.y Linux kernel stable tree selftests/powerpc: Add more version checks to alignment_handler test 2018-08-07T14:32:28+00:00 Michael Ellerman mpe@ellerman.id.au 2018-07-31T12:08:42+00:00 8e4bdc699bf32c58bfff7b2bfac204a6bf5efb69 The alignment_handler is documented to only work on Power8/Power9, but we can make it run on older CPUs by guarding more of the tests with feature checks. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> 
The alignment_handler is documented to only work on Power8/Power9, but
we can make it run on older CPUs by guarding more of the tests with
feature checks.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
selftests/powerpc: Skip earlier in alignment_handler test 2018-08-07T14:32:28+00:00 Michael Ellerman mpe@ellerman.id.au 2018-07-31T12:08:41+00:00 edba42cd14dbb0cc8b48cf786b006ac5da4cd9a7 Currently the alignment_handler test prints "Can't open /dev/fb0" about 80 times per run, which is a little annoying. Refactor it to check earlier if it can open /dev/fb0 and skip if not, this results in each test printing something like: test: test_alignment_handler_vsx_206 tags: git_version:v4.18-rc3-134-gfb21a48904aa [SKIP] Test skipped on line 291 skip: test_alignment_handler_vsx_206 Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> 
Currently the alignment_handler test prints "Can't open /dev/fb0"
about 80 times per run, which is a little annoying.

Refactor it to check earlier if it can open /dev/fb0 and skip if not,
this results in each test printing something like:

  test: test_alignment_handler_vsx_206
  tags: git_version:v4.18-rc3-134-gfb21a48904aa
  [SKIP] Test skipped on line 291
  skip: test_alignment_handler_vsx_206

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
selftests/powerpc: Fix to use ucontext_t instead of struct ucontext 2018-02-13T11:44:18+00:00 Harish harish@linux.vnet.ibm.com 2018-02-13T06:32:55+00:00 ecdf06e1ea5376bba03c155751f6869d3dfaa210 With glibc 2.26 'struct ucontext' is removed to improve POSIX compliance, which breaks powerpc/alignment_handler selftest. Fix the test by using ucontext_t. Tested on ppc, works with older glibc versions as well. Fixes the following: alignment_handler.c: In function ‘sighandler’: alignment_handler.c:68:5: error: dereferencing pointer to incomplete type ‘struct ucontext’ ucp->uc_mcontext.gp_regs[PT_NIP] += 4; Signed-off-by: Harish <harish@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> 
With glibc 2.26 'struct ucontext' is removed to improve POSIX
compliance, which breaks powerpc/alignment_handler selftest. Fix the
test by using ucontext_t. Tested on ppc, works with older glibc
versions as well.

Fixes the following:
  alignment_handler.c: In function ‘sighandler’:
  alignment_handler.c:68:5: error: dereferencing pointer to incomplete type ‘struct ucontext’
    ucp->uc_mcontext.gp_regs[PT_NIP] += 4;

Signed-off-by: Harish <harish@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
selftests/powerpc: Add alignment handler selftest 2018-01-21T18:48:34+00:00 Andrew Donnellan andrew.donnellan@au1.ibm.com 2017-10-16T05:04:02+00:00 8d1915873d492b8e1f03bbcab527db62a8d49542 Add a selftest to exercise the powerpc alignment fault handler. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> [mpe: Add 32-bit support to the signal handler] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> 
Add a selftest to exercise the powerpc alignment fault handler.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
[mpe: Add 32-bit support to the signal handler]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>