Anton Blanchard 5246adec59 powerpc/pseries: Use H_CLEAR_HPT to clear MMU hash table during kexec ... An hcall was recently added that does exactly what we need during kexec - it clears the entire MMU hash table, ignoring any VRMA mappings. Try it and fall back to the old method if we get a failure. On a POWER8 box with 5TB of memory, this reduces the time it takes to kexec a new kernel from from 4 minutes to 1 minute. Signed-off-by: Anton Blanchard <anton@samba.org> Tested-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> [mpe: Split into separate functions and tweak function naming] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2016-11-14 11:11:51 +11:00
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asm	powerpc/pseries: Use H_CLEAR_HPT to clear MMU hash table during kexec	2016-11-14 11:11:51 +11:00
uapi/asm	powerpc/ptrace: Enable support for Performance Monitor registers	2016-08-01 11:15:24 +10:00