3 commits

Author	SHA1	Message	Date
Michael Ellerman	73da08f696	selftests/powerpc: Remove powerpc special cases from stack expansion test ... Now that the powerpc code behaves the same as other architectures we can drop the special cases we had. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200724092528.1578671-5-mpe@ellerman.id.au	2020-07-29 21:02:12 +10:00
Michael Ellerman	9ee571d84b	selftests/powerpc: Update the stack expansion test ... Update the stack expansion load/store test to take into account the new allowance of 4224 bytes below the stack pointer. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200724092528.1578671-3-mpe@ellerman.id.au	2020-07-29 21:02:12 +10:00
Michael Ellerman	c9938a9dac	selftests/powerpc: Add test of stack expansion logic ... We have custom stack expansion checks that it turns out are extremely badly tested and contain bugs, surprise. So add some tests that exercise the code and capture the current boundary conditions. The signal test currently fails on 64-bit kernels because the 2048 byte allowance for the signal frame is too small, we will fix that in a subsequent patch. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200724092528.1578671-1-mpe@ellerman.id.au	2020-07-29 21:02:11 +10:00