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5402e239d0
linux/arch/powerpc
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Nicholas Piggin 5402e239d0 powerpc/64s: Get LPID bit width from device tree 
Allow the LPID bit width and partition table size to be set at runtime
from the device tree.

Move the PID bit width detection into the same place.

KVM does not support using the extra bits yet, this is mainly required
to get the PTCR register values correct (so KVM will run but it will
not allocate > 4096 LPIDs).

OPAL firmware provides this property for POWER10 CPUs since skiboot
commit 9b85f7d961f2 ("hdata: add mmu-pid-bits and mmu-lpid-bits for
POWER10 CPUs").

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211129030915.1888332-1-npiggin@gmail.com
2021-11-30 22:27:07 +11:00
..
boot powerpc: flexible GPR range save/restore macros 2021-11-29 23:15:20 +11:00
configs powerpc/pseries: delete scanlog 2021-11-25 11:25:33 +11:00
crypto powerpc: flexible GPR range save/restore macros 2021-11-29 23:15:20 +11:00
include powerpc/64s: Get LPID bit width from device tree 2021-11-30 22:27:07 +11:00
kernel powerpc: flexible GPR range save/restore macros 2021-11-29 23:15:20 +11:00
kexec powerpc/machdep: Remove stale functions from ppc_md structure 2021-10-22 15:22:05 +11:00
kvm powerpc: flexible GPR range save/restore macros 2021-11-29 23:15:20 +11:00
lib powerpc: flexible GPR range save/restore macros 2021-11-29 23:15:20 +11:00
math-emu powerpc/64s: avoid reloading (H)SRR registers if they are still valid 2021-06-25 00:06:55 +10:00
mm powerpc/64s: Get LPID bit width from device tree 2021-11-30 22:27:07 +11:00
net bpf ppc32: Access only if addr is kernel address 2021-11-25 11:25:32 +11:00
perf powerpc/perf: Fix PMU callbacks to clear pending PMI before resetting an overflown PMC 2021-11-30 17:15:49 +11:00
platforms powerpc/85xx: Make c293_pcie_pic_init() static 2021-11-29 22:49:17 +11:00
purgatory powerpc/kexec: Don't use .machine ppc64 in trampoline_64.S 2021-04-08 21:17:43 +10:00
sysdev powerpc/tsi108: make EXPORT_SYMBOL follow its function immediately 2021-11-25 11:25:32 +11:00
tools powerpc/head_check: Fix shellcheck errors 2021-08-17 22:52:02 +10:00
xmon powerpc/64s: guard optional TIDR SPR with CPU ftr test 2021-11-24 21:08:56 +11:00
Kbuild kbuild: use more subdir- for visiting subdirectories while cleaning 2021-10-24 13:49:46 +09:00
Kconfig powerpc/ftrace: Activate HAVE_DYNAMIC_FTRACE_WITH_REGS on PPC32 2021-11-29 22:49:29 +11:00
Kconfig.debug powerpc/ptdump: Convert powerpc to GENERIC_PTDUMP 2021-08-25 13:35:48 +10:00
Makefile Kbuild updates for v5.16 2021-11-08 09:15:45 -08:00
Makefile.postlink