From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Nicholas Piggin <npiggin@gmail.com>
Subject: [PATCH v6 18/18] powerpc/microwatt: add POWER9_CPU, clear PPC_64S_HASH_MMU
Date: Thu, 2 Dec 2021 00:41:53 +1000 [thread overview]
Message-ID: <20211201144153.2456614-19-npiggin@gmail.com> (raw)
In-Reply-To: <20211201144153.2456614-1-npiggin@gmail.com>
Microwatt implements a subset of ISA v3.0 (which is equivalent to
the POWER9_CPU option). It is radix-only, so does not require hash
MMU support.
This saves 20kB compressed dtbImage and 56kB vmlinux size.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
arch/powerpc/configs/microwatt_defconfig | 3 ++-
arch/powerpc/platforms/microwatt/Kconfig | 1 -
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/configs/microwatt_defconfig b/arch/powerpc/configs/microwatt_defconfig
index 07d87a4044b2..eff933ebbb9e 100644
--- a/arch/powerpc/configs/microwatt_defconfig
+++ b/arch/powerpc/configs/microwatt_defconfig
@@ -15,6 +15,8 @@ CONFIG_EMBEDDED=y
# CONFIG_COMPAT_BRK is not set
# CONFIG_SLAB_MERGE_DEFAULT is not set
CONFIG_PPC64=y
+CONFIG_POWER9_CPU=y
+# CONFIG_PPC_64S_HASH_MMU is not set
# CONFIG_PPC_KUEP is not set
# CONFIG_PPC_KUAP is not set
CONFIG_CPU_LITTLE_ENDIAN=y
@@ -27,7 +29,6 @@ CONFIG_PPC_MICROWATT=y
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
# CONFIG_COREDUMP is not set
diff --git a/arch/powerpc/platforms/microwatt/Kconfig b/arch/powerpc/platforms/microwatt/Kconfig
index 823192e9d38a..5e320f49583a 100644
--- a/arch/powerpc/platforms/microwatt/Kconfig
+++ b/arch/powerpc/platforms/microwatt/Kconfig
@@ -5,7 +5,6 @@ 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:[~2021-12-01 14:54 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-01 14:41 [PATCH v6 00/18] powerpc: Make hash MMU code build configurable Nicholas Piggin
2021-12-01 14:41 ` [PATCH v6 01/18] powerpc: Remove unused FW_FEATURE_NATIVE references Nicholas Piggin
2021-12-01 14:41 ` [PATCH v6 02/18] powerpc: Rename PPC_NATIVE to PPC_HASH_MMU_NATIVE Nicholas Piggin
2021-12-01 14:41 ` [PATCH v6 03/18] powerpc/pseries: Stop selecting PPC_HASH_MMU_NATIVE Nicholas Piggin
2021-12-01 14:41 ` [PATCH v6 04/18] powerpc/64s: Move and rename do_bad_slb_fault as it is not hash specific Nicholas Piggin
2021-12-01 14:41 ` [PATCH v6 05/18] powerpc/pseries: move process table registration away from hash-specific code Nicholas Piggin
2021-12-01 14:41 ` [PATCH v6 06/18] powerpc/pseries: lparcfg don't include slb_size line in radix mode Nicholas Piggin
2021-12-01 14:41 ` [PATCH v6 07/18] powerpc/64s: move THP trace point creation out of hash specific file Nicholas Piggin
2021-12-01 14:41 ` [PATCH v6 08/18] powerpc/64s: Make flush_and_reload_slb a no-op when radix is enabled Nicholas Piggin
2021-12-01 14:41 ` [PATCH v6 09/18] powerpc/64s: move page size definitions from hash specific file Nicholas Piggin
2021-12-01 14:41 ` [PATCH v6 10/18] powerpc/64s: Rename hash_hugetlbpage.c to hugetlbpage.c Nicholas Piggin
2021-12-01 14:41 ` [PATCH v6 11/18] powerpc/64: pcpu setup avoid reading mmu_linear_psize on 64e or radix Nicholas Piggin
2021-12-01 14:41 ` [PATCH v6 12/18] powerpc: make memremap_compat_align 64s-only Nicholas Piggin
2021-12-01 14:41 ` [PATCH v6 13/18] powerpc/64e: remove mmu_linear_psize Nicholas Piggin
2021-12-01 14:41 ` [PATCH v6 14/18] powerpc/64s: Fix radix MMU when MMU_FTR_HPTE_TABLE is clear Nicholas Piggin
2021-12-01 14:41 ` [PATCH v6 15/18] powerpc/64s: Always define arch unmapped area calls Nicholas Piggin
2021-12-08 9:38 ` Christophe Leroy
2021-12-09 8:25 ` Nicholas Piggin
2021-12-09 8:28 ` Christophe Leroy
2021-12-09 9:30 ` Nicholas Piggin
2021-12-08 10:00 ` Christophe Leroy
2021-12-09 8:29 ` Nicholas Piggin
2021-12-01 14:41 ` [PATCH v6 16/18] powerpc/64s: Make hash MMU support configurable Nicholas Piggin
2021-12-01 14:41 ` [PATCH v6 17/18] powerpc/64s: Move hash MMU support code under CONFIG_PPC_64S_HASH_MMU Nicholas Piggin
2021-12-02 13:30 ` Fabiano Rosas
2021-12-03 12:34 ` Michael Ellerman
2021-12-07 12:58 ` Michael Ellerman
2021-12-07 13:00 ` Michael Ellerman
2021-12-09 8:30 ` Nicholas Piggin
2021-12-01 14:41 ` Nicholas Piggin [this message]
2021-12-15 0:24 ` [PATCH v6 00/18] powerpc: Make hash MMU code build configurable Michael Ellerman
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