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Author SHA1 Message Date
Daniel Axtens
0d239f3b03 selftests/powerpc: refactor entry and rfi_flush tests 
For simplicity in backporting, the original entry_flush test contained
a lot of duplicated code from the rfi_flush test. De-duplicate that code.

Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
 2020-11-19 23:47:23 +11:00
Daniel Axtens
89a83a0c69 selftests/powerpc: entry flush test 
Add a test modelled on the RFI flush test which counts the number
of L1D misses doing a simple syscall with the entry flush on and off.

For simplicity of backporting, this test duplicates a lot of code from
rfi_flush. We clean that up in the next patch.

Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
 2020-11-19 23:47:20 +11:00