Re: [PATCH 0/7] powerpc: branch cache flush changes

On Tue, 9 Jun 2020 17:06:03 +1000, Nicholas Piggin wrote:

This series allows the link stack to be flushed with the speical
bcctr 2,0,0 flush instruction that also flushes the count cache if
the processor supports it.

Firmware does not support this at the moment, but I've tested it in
simulator with a patched firmware to advertise support.

[...]

Patches 1-6 applied to powerpc/next.

[1/7] powerpc/security: re-name count cache flush to branch cache flush
      https://git.kernel.org/powerpc/c/1026798c644bfd3115fc4e32fd5e767cfc30ccf1
[2/7] powerpc/security: change link stack flush state to the flush type enum
      https://git.kernel.org/powerpc/c/c06ac2771070f465076e87bba262c64fb0b3aca3
[3/7] powerpc/security: make display of branch cache flush more consistent
      https://git.kernel.org/powerpc/c/1afe00c74ffe6d502bffa81c7d849cb4640d7ae5
[4/7] powerpc/security: split branch cache flush toggle from code patching
      https://git.kernel.org/powerpc/c/c0036549a9d9a060fa8bc24e31f85503ce08ad5e
[5/7] powerpc/64s: Move branch cache flushing bcctr variant to ppc-ops.h
      https://git.kernel.org/powerpc/c/70d7cdaf0548ec95fa7204dcdd39cd8e63cee24d
[6/7] powerpc/security: Allow for processors that flush the link stack using the special bcctr
      https://git.kernel.org/powerpc/c/4d24e21cc694e7253a532fe5a9bde12b284f1317

cheers