[PATCH] powerpc/64s: Default to 64K pages for 64 bit book3s

Thu Oct 14 10:31:33 AEDT 2021

For 64-bit book3s the default should be 64K as that's what modern CPUs
are designed for.

The following defconfigs already set CONFIG_PPC_64K_PAGES:

 cell_defconfig
 pasemi_defconfig
 powernv_defconfig
 ppc64_defconfig
 pseries_defconfig
 skiroot_defconfig

The have the option removed from the defconfig, as it is now the
default.

The defconfigs that now need to set CONFIG_PPC_4K_PAGES to maintain
their existing behaviour are:

 g5_defconfig
 maple_defconfig
 microwatt_defconfig
 ps3_defconfig

Link: https://github.com/linuxppc/issues/issues/109
Signed-off-by: Joel Stanley <joel at jms.id.au>
---
 arch/powerpc/Kconfig                     | 1 +
 arch/powerpc/configs/cell_defconfig      | 1 -
 arch/powerpc/configs/g5_defconfig        | 1 +
 arch/powerpc/configs/maple_defconfig     | 1 +
 arch/powerpc/configs/microwatt_defconfig | 2 +-
 arch/powerpc/configs/pasemi_defconfig    | 1 -
 arch/powerpc/configs/powernv_defconfig   | 1 -
 arch/powerpc/configs/ppc64_defconfig     | 1 -
 arch/powerpc/configs/ps3_defconfig       | 1 +
 arch/powerpc/configs/pseries_defconfig   | 1 -
 arch/powerpc/configs/skiroot_defconfig   | 1 -
 11 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 8a584414ef67..e2c220fa91c0 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -708,6 +708,7 @@ config ARCH_MEMORY_PROBE
 
 choice
 	prompt "Page size"
+	default PPC_64K_PAGES if PPC_BOOK3S_64
 	default PPC_4K_PAGES
 	help
 	  Select the kernel logical page size. Increasing the page size
diff --git a/arch/powerpc/configs/cell_defconfig b/arch/powerpc/configs/cell_defconfig
index cc2c0d51f493..7fd9e596ea33 100644
--- a/arch/powerpc/configs/cell_defconfig
+++ b/arch/powerpc/configs/cell_defconfig
@@ -36,7 +36,6 @@ CONFIG_GEN_RTC=y
 CONFIG_BINFMT_MISC=m
 CONFIG_IRQ_ALL_CPUS=y
 CONFIG_NUMA=y
-CONFIG_PPC_64K_PAGES=y
 CONFIG_SCHED_SMT=y
 CONFIG_PCIEPORTBUS=y
 CONFIG_NET=y
diff --git a/arch/powerpc/configs/g5_defconfig b/arch/powerpc/configs/g5_defconfig
index 63d611cc160f..9d6212a8b195 100644
--- a/arch/powerpc/configs/g5_defconfig
+++ b/arch/powerpc/configs/g5_defconfig
@@ -26,6 +26,7 @@ CONFIG_CPU_FREQ_PMAC64=y
 CONFIG_GEN_RTC=y
 CONFIG_KEXEC=y
 CONFIG_IRQ_ALL_CPUS=y
+CONFIG_PPC_4K_PAGES=y
 CONFIG_PCI_MSI=y
 CONFIG_NET=y
 CONFIG_PACKET=y
diff --git a/arch/powerpc/configs/maple_defconfig b/arch/powerpc/configs/maple_defconfig
index 9424c1e67e1c..c821a97f4a89 100644
--- a/arch/powerpc/configs/maple_defconfig
+++ b/arch/powerpc/configs/maple_defconfig
@@ -25,6 +25,7 @@ CONFIG_UDBG_RTAS_CONSOLE=y
 CONFIG_GEN_RTC=y
 CONFIG_KEXEC=y
 CONFIG_IRQ_ALL_CPUS=y
+CONFIG_PPC_4K_PAGES=y
 CONFIG_PCI_MSI=y
 CONFIG_NET=y
 CONFIG_PACKET=y
diff --git a/arch/powerpc/configs/microwatt_defconfig b/arch/powerpc/configs/microwatt_defconfig
index 9465209b8c5b..556ec5eec684 100644
--- a/arch/powerpc/configs/microwatt_defconfig
+++ b/arch/powerpc/configs/microwatt_defconfig
@@ -1,7 +1,6 @@
 # CONFIG_SWAP is not set
 # CONFIG_CROSS_MEMORY_ATTACH is not set
 CONFIG_HIGH_RES_TIMERS=y
-CONFIG_PREEMPT_VOLUNTARY=y
 CONFIG_TICK_CPU_ACCOUNTING=y
 CONFIG_LOG_BUF_SHIFT=16
 CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=12
@@ -26,6 +25,7 @@ CONFIG_PPC_MICROWATT=y
 # CONFIG_PPC_OF_BOOT_TRAMPOLINE is not set
 CONFIG_CPU_FREQ=y
 CONFIG_HZ_100=y
+CONFIG_PPC_4K_PAGES=y
 # CONFIG_PPC_MEM_KEYS is not set
 # CONFIG_SECCOMP is not set
 # CONFIG_MQ_IOSCHED_KYBER is not set
diff --git a/arch/powerpc/configs/pasemi_defconfig b/arch/powerpc/configs/pasemi_defconfig
index 78606b7e42df..e00a703581c3 100644
--- a/arch/powerpc/configs/pasemi_defconfig
+++ b/arch/powerpc/configs/pasemi_defconfig
@@ -22,7 +22,6 @@ CONFIG_CPU_FREQ_GOV_POWERSAVE=y
 CONFIG_CPU_FREQ_GOV_USERSPACE=y
 CONFIG_CPU_FREQ_GOV_ONDEMAND=y
 CONFIG_HZ_1000=y
-CONFIG_PPC_64K_PAGES=y
 # CONFIG_SECCOMP is not set
 CONFIG_PCI_MSI=y
 CONFIG_PCCARD=y
diff --git a/arch/powerpc/configs/powernv_defconfig b/arch/powerpc/configs/powernv_defconfig
index 8bfeea6c7de7..49f49c263935 100644
--- a/arch/powerpc/configs/powernv_defconfig
+++ b/arch/powerpc/configs/powernv_defconfig
@@ -62,7 +62,6 @@ CONFIG_MEMORY_FAILURE=y
 CONFIG_HWPOISON_INJECT=m
 CONFIG_TRANSPARENT_HUGEPAGE=y
 CONFIG_DEFERRED_STRUCT_PAGE_INIT=y
-CONFIG_PPC_64K_PAGES=y
 CONFIG_SCHED_SMT=y
 CONFIG_PM=y
 CONFIG_HOTPLUG_PCI=y
diff --git a/arch/powerpc/configs/ppc64_defconfig b/arch/powerpc/configs/ppc64_defconfig
index 0ad2291337a7..203d0b7f0bb8 100644
--- a/arch/powerpc/configs/ppc64_defconfig
+++ b/arch/powerpc/configs/ppc64_defconfig
@@ -52,7 +52,6 @@ CONFIG_KEXEC_FILE=y
 CONFIG_CRASH_DUMP=y
 CONFIG_FA_DUMP=y
 CONFIG_IRQ_ALL_CPUS=y
-CONFIG_PPC_64K_PAGES=y
 CONFIG_SCHED_SMT=y
 CONFIG_HOTPLUG_PCI=y
 CONFIG_HOTPLUG_PCI_RPA=m
diff --git a/arch/powerpc/configs/ps3_defconfig b/arch/powerpc/configs/ps3_defconfig
index f300dcb937cc..7c95fab4b920 100644
--- a/arch/powerpc/configs/ps3_defconfig
+++ b/arch/powerpc/configs/ps3_defconfig
@@ -30,6 +30,7 @@ CONFIG_PS3_LPM=m
 # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
 CONFIG_BINFMT_MISC=y
 CONFIG_KEXEC=y
+CONFIG_PPC_4K_PAGES=y
 # CONFIG_SPARSEMEM_VMEMMAP is not set
 # CONFIG_COMPACTION is not set
 CONFIG_SCHED_SMT=y
diff --git a/arch/powerpc/configs/pseries_defconfig b/arch/powerpc/configs/pseries_defconfig
index b183629f1bcf..de7641adb899 100644
--- a/arch/powerpc/configs/pseries_defconfig
+++ b/arch/powerpc/configs/pseries_defconfig
@@ -56,7 +56,6 @@ CONFIG_MEMORY_HOTPLUG=y
 CONFIG_MEMORY_HOTREMOVE=y
 CONFIG_KSM=y
 CONFIG_TRANSPARENT_HUGEPAGE=y
-CONFIG_PPC_64K_PAGES=y
 CONFIG_SCHED_SMT=y
 CONFIG_HOTPLUG_PCI=y
 CONFIG_HOTPLUG_PCI_RPA=m
diff --git a/arch/powerpc/configs/skiroot_defconfig b/arch/powerpc/configs/skiroot_defconfig
index c3ba614c973d..f491875700e8 100644
--- a/arch/powerpc/configs/skiroot_defconfig
+++ b/arch/powerpc/configs/skiroot_defconfig
@@ -43,7 +43,6 @@ CONFIG_KEXEC_FILE=y
 CONFIG_PRESERVE_FA_DUMP=y
 CONFIG_IRQ_ALL_CPUS=y
 CONFIG_NUMA=y
-CONFIG_PPC_64K_PAGES=y
 CONFIG_SCHED_SMT=y
 CONFIG_CMDLINE="console=tty0 console=hvc0 ipr.fast_reboot=1 quiet"
 # CONFIG_SECCOMP is not set
-- 
2.33.0

