linux.git/tools/testing/selftests/powerpc/math/Makefile, branch v4.10 Linux kernel source tree selftests/powerpc: Check for VSX preservation across userspace preemption 2016-10-04T09:10:09+00:00 Cyril Bur cyrilbur@gmail.com 2016-09-23T06:18:13+00:00 65ca668f58a260e144621fd93a413da67635b999 Ensure the kernel correctly switches VSX registers correctly. VSX registers are all volatile, and despite the kernel preserving VSX across syscalls, it doesn't have to. Test that during interrupts and timeslices ending the VSX regs remain the same. Signed-off-by: Cyril Bur <cyrilbur@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> 
Ensure the kernel correctly switches VSX registers correctly. VSX
registers are all volatile, and despite the kernel preserving VSX
across syscalls, it doesn't have to. Test that during interrupts and
timeslices ending the VSX regs remain the same.

Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
selftests/powerpc: Test FPU and VMX regs in signal ucontext 2016-03-02T12:34:47+00:00 Cyril Bur cyrilbur@gmail.com 2016-02-29T06:53:45+00:00 48e8c571a4f86978c72c2aa799dc7436d1c38c77 Load up the non volatile FPU and VMX regs and ensure that they are the expected value in a signal handler Signed-off-by: Cyril Bur <cyrilbur@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> 
Load up the non volatile FPU and VMX regs and ensure that they are the
expected value in a signal handler

Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
selftests/powerpc: Test preservation of FPU and VMX regs across preemption 2016-03-02T12:34:47+00:00 Cyril Bur cyrilbur@gmail.com 2016-02-29T06:53:44+00:00 e5ab8be68e4421d7f8d4e69e2a8ddb3d69508d2a Loop in assembly checking the registers with many threads. Signed-off-by: Cyril Bur <cyrilbur@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> 
Loop in assembly checking the registers with many threads.

Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
selftests/powerpc: Test the preservation of FPU and VMX regs across syscall 2016-03-02T12:34:46+00:00 Cyril Bur cyrilbur@gmail.com 2016-02-29T06:53:43+00:00 01127f1ead4cef75e2b9b309e0ea95418ccd53bd Test that the non volatile floating point and Altivec registers get correctly preserved across the fork() syscall. fork() works nicely for this purpose, the registers should be the same for both parent and child Signed-off-by: Cyril Bur <cyrilbur@gmail.com> [mpe: Add include guards to basic_asm.h, minor formatting] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> 
Test that the non volatile floating point and Altivec registers get
correctly preserved across the fork() syscall.

fork() works nicely for this purpose, the registers should be the same for
both parent and child

Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
[mpe: Add include guards to basic_asm.h, minor formatting]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>