From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Nicholas Piggin <npiggin@gmail.com>
Subject: [RFC PATCH 6/6] powerpc/microwatt: Stop building the hash MMU code
Date: Sat, 28 Aug 2021 02:34:10 +1000 [thread overview]
Message-ID: <20210827163410.1177154-7-npiggin@gmail.com> (raw)
In-Reply-To: <20210827163410.1177154-1-npiggin@gmail.com>
Microwatt is radix-only, so stop selecting the hash MMU code.
This saves 20kB compressed dtbImage and 56kB vmlinux size.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
arch/powerpc/configs/microwatt_defconfig | 1 -
arch/powerpc/platforms/Kconfig.cputype | 1 +
arch/powerpc/platforms/microwatt/Kconfig | 1 -
3 files changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/powerpc/configs/microwatt_defconfig b/arch/powerpc/configs/microwatt_defconfig
index bf5f2e5905eb..6fbad42f9e3d 100644
--- a/arch/powerpc/configs/microwatt_defconfig
+++ b/arch/powerpc/configs/microwatt_defconfig
@@ -26,7 +26,6 @@ CONFIG_PPC_MICROWATT=y
# CONFIG_PPC_OF_BOOT_TRAMPOLINE is not set
CONFIG_CPU_FREQ=y
CONFIG_HZ_100=y
-# CONFIG_PPC_MEM_KEYS is not set
# CONFIG_SECCOMP is not set
# CONFIG_MQ_IOSCHED_KYBER is not set
# CONFIG_COREDUMP is not set
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index 9b90fc501ed4..b9acd6c68c81 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -371,6 +371,7 @@ config SPE
config PPC_64S_HASH_MMU
bool "Hash MMU Support"
depends on PPC_BOOK3S_64
+ depends on !PPC_MICROWATT
default y
select PPC_MM_SLICES
help
diff --git a/arch/powerpc/platforms/microwatt/Kconfig b/arch/powerpc/platforms/microwatt/Kconfig
index e0ff2cfc1ca0..4f0ce292a6ce 100644
--- a/arch/powerpc/platforms/microwatt/Kconfig
+++ b/arch/powerpc/platforms/microwatt/Kconfig
@@ -6,7 +6,6 @@ config PPC_MICROWATT
select PPC_XICS
select PPC_ICS_NATIVE
select PPC_ICP_NATIVE
- select PPC_HASH_MMU_NATIVE if PPC_64S_HASH_MMU
select PPC_UDBG_16550
select ARCH_RANDOM
help
--
2.23.0
next prev parent reply other threads:[~2021-08-27 16:38 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-27 16:34 [RFC PATCH 0/6] powerpc: Make hash MMU code build configurable Nicholas Piggin
2021-08-27 16:34 ` [RFC PATCH 1/6] powerpc: Remove unused FW_FEATURE_NATIVE references Nicholas Piggin
2021-08-27 16:34 ` [RFC PATCH 2/6] powerpc: Rename PPC_NATIVE to PPC_HASH_MMU_NATIVE Nicholas Piggin
2021-08-27 16:34 ` [RFC PATCH 3/6] powerpc/pseries: Stop selecting PPC_HASH_MMU_NATIVE Nicholas Piggin
2021-08-27 16:34 ` [RFC PATCH 4/6] powerpc/64s: Make hash MMU code build configurable Nicholas Piggin
2021-08-28 9:34 ` Christophe Leroy
2021-08-30 6:51 ` Nicholas Piggin
2021-08-28 9:59 ` Christophe Leroy
2021-08-30 6:55 ` Nicholas Piggin
2021-08-30 7:12 ` Christophe Leroy
2021-08-27 16:34 ` [RFC PATCH 5/6] powerpc/microwatt: select POWER9_CPU Nicholas Piggin
2021-08-28 9:50 ` Christophe Leroy
2021-08-30 6:56 ` Nicholas Piggin
2021-08-27 16:34 ` Nicholas Piggin [this message]
2021-08-28 9:54 ` [RFC PATCH 6/6] powerpc/microwatt: Stop building the hash MMU code Christophe Leroy
2021-08-30 3:24 ` Michael Ellerman
2021-08-30 6:58 ` Nicholas Piggin
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