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authorLinus Torvalds <torvalds@linux-foundation.org>2017-05-12 10:04:09 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-12 10:04:09 -0700
commitdc2a24816637ff6c60f08c4245aba01c6e9b6a79 (patch)
tree15a4a6462323beb7aed6eb9bb44192439dd0452a /arch/powerpc/Kconfig
parentac3c4aa248c5b5390c40fad1ceb0a15a53f57a36 (diff)
parent5a61ef74f269f2573f48fa53607a8911216c3326 (diff)
Merge tag 'powerpc-4.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull more powerpc updates from Michael Ellerman: "The change to the Linux page table geometry was delayed for more testing with 16G pages, and there's the new CPU features stuff which just needed one more polish before going in. Plus a few changes from Scott which came in a bit late. And then various fixes, mostly minor. Summary highlights: - rework the Linux page table geometry to lower memory usage on 64-bit Book3S (IBM chips) using the Hash MMU. - support for a new device tree binding for discovering CPU features on future firmwares. - Freescale updates from Scott: "Includes a fix for a powerpc/next mm regression on 64e, a fix for a kernel hang on 64e when using a debugger inside a relocated kernel, a qman fix, and misc qe improvements." Thanks to: Christophe Leroy, Gavin Shan, Horia Geantă, LiuHailong, Nicholas Piggin, Roy Pledge, Scott Wood, Valentin Longchamp" * tag 'powerpc-4.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/64s: Support new device tree binding for discovering CPU features powerpc: Don't print cpu_spec->cpu_name if it's NULL of/fdt: introduce of_scan_flat_dt_subnodes and of_get_flat_dt_phandle powerpc/64s: Fix unnecessary machine check handler relocation branch powerpc/mm/book3s/64: Rework page table geometry for lower memory usage powerpc: Fix distclean with Makefile.postlink powerpc/64e: Don't place the stack beyond TASK_SIZE powerpc/powernv: Block PCI config access on BCM5718 during EEH recovery powerpc/8xx: Adding support of IRQ in MPC8xx GPIO soc/fsl/qbman: Disable IRQs for deferred QBMan work soc/fsl/qe: add EXPORT_SYMBOL for the 2 qe_tdm functions soc/fsl/qe: only apply QE_General4 workaround on affected SoCs soc/fsl/qe: round brg_freq to 1kHz granularity soc/fsl/qe: get rid of immrbar_virt_to_phys() net: ethernet: ucc_geth: fix MEM_PART_MURAM mode powerpc/64e: Fix hang when debugging programs with relocated kernel
Diffstat (limited to 'arch/powerpc/Kconfig')
-rw-r--r--arch/powerpc/Kconfig16
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 964da1891ea9..f7c8f9972f61 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -380,6 +380,22 @@ source "arch/powerpc/platforms/Kconfig"
menu "Kernel options"
+config PPC_DT_CPU_FTRS
+ bool "Device-tree based CPU feature discovery & setup"
+ depends on PPC_BOOK3S_64
+ default n
+ help
+ This enables code to use a new device tree binding for describing CPU
+ compatibility and features. Saying Y here will attempt to use the new
+ binding if the firmware provides it. Currently only the skiboot
+ firmware provides this binding.
+ If you're not sure say Y.
+
+config PPC_CPUFEATURES_ENABLE_UNKNOWN
+ bool "cpufeatures pass through unknown features to guest/userspace"
+ depends on PPC_DT_CPU_FTRS
+ default y
+
config HIGHMEM
bool "High memory support"
depends on PPC32