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From: Christoph Hellwig <hch@lst.de>
To: Greg Ungerer <gerg@linux-m68k.org>
Cc: uclinux-h8-devel@lists.sourceforge.jp,
	linux-xtensa@linux-xtensa.org, Michal Simek <monstr@monstr.eu>,
	Vladimir Murzin <vladimir.murzin@arm.com>,
	linux-c6x-dev@linux-c6x.org, linux-sh@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org,
	linux-riscv@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH 11/17] binfmt_flat: add a ARCH_HAS_BINFMT_FLAT option
Date: Thu, 13 Jun 2019 09:08:57 +0200
Message-ID: <20190613070903.17214-12-hch@lst.de> (raw)
In-Reply-To: <20190613070903.17214-1-hch@lst.de>

Allow architectures to opt into ARCH_HAS_BINFMT_FLAT support instead of
assuming that all nommu ports support the format.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Vladimir Murzin <vladimir.murzin@arm.com>
---
 arch/arm/Kconfig        | 1 +
 arch/c6x/Kconfig        | 1 +
 arch/h8300/Kconfig      | 1 +
 arch/m68k/Kconfig       | 1 +
 arch/microblaze/Kconfig | 1 +
 arch/sh/Kconfig         | 1 +
 arch/xtensa/Kconfig     | 1 +
 fs/Kconfig.binfmt       | 5 ++++-
 8 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index b1b48c0bde76..695a26c68064 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -4,6 +4,7 @@ config ARM
 	default y
 	select ARCH_32BIT_OFF_T
 	select ARCH_CLOCKSOURCE_DATA
+	select ARCH_HAS_BINFMT_FLAT
 	select ARCH_HAS_DEBUG_VIRTUAL if MMU
 	select ARCH_HAS_DEVMEM_IS_ALLOWED
 	select ARCH_HAS_ELF_RANDOMIZE
diff --git a/arch/c6x/Kconfig b/arch/c6x/Kconfig
index eeb0471268a0..78dfe186d708 100644
--- a/arch/c6x/Kconfig
+++ b/arch/c6x/Kconfig
@@ -7,6 +7,7 @@
 config C6X
 	def_bool y
 	select ARCH_32BIT_OFF_T
+	select ARCH_HAS_BINFMT_FLAT
 	select ARCH_HAS_SYNC_DMA_FOR_CPU
 	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
 	select CLKDEV_LOOKUP
diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig
index 7457f190caaa..ec800e9d5aad 100644
--- a/arch/h8300/Kconfig
+++ b/arch/h8300/Kconfig
@@ -2,6 +2,7 @@
 config H8300
         def_bool y
 	select ARCH_32BIT_OFF_T
+	select ARCH_HAS_BINFMT_FLAT
 	select BINFMT_FLAT_ARGVP_ENVP_ON_STACK
 	select BINFMT_FLAT_OLD_ALWAYS_RAM
 	select GENERIC_ATOMIC64
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index fd69ee5ad6ab..c0c43c624afa 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -3,6 +3,7 @@ config M68K
 	bool
 	default y
 	select ARCH_32BIT_OFF_T
+	select ARCH_HAS_BINFMT_FLAT
 	select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA
 	select ARCH_MIGHT_HAVE_PC_PARPORT if ISA
 	select ARCH_NO_COHERENT_DMA_MMAP if !MMU
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index f11433daab4a..d411de05b628 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -3,6 +3,7 @@ config MICROBLAZE
 	def_bool y
 	select ARCH_32BIT_OFF_T
 	select ARCH_NO_SWAP
+	select ARCH_HAS_BINFMT_FLAT if !MMU
 	select ARCH_HAS_DMA_COHERENT_TO_PFN if MMU
 	select ARCH_HAS_GCOV_PROFILE_ALL
 	select ARCH_HAS_SYNC_DMA_FOR_CPU
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index b77f512bb176..df3e6215b78c 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 config SUPERH
 	def_bool y
+	select ARCH_HAS_BINFMT_FLAT if !MMU
 	select ARCH_HAS_PTE_SPECIAL
 	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
 	select ARCH_MIGHT_HAVE_PC_PARPORT
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 6ec1b75eabc5..ebc135bda921 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -2,6 +2,7 @@
 config XTENSA
 	def_bool y
 	select ARCH_32BIT_OFF_T
+	select ARCH_HAS_BINFMT_FLAT if !MMU
 	select ARCH_HAS_SYNC_DMA_FOR_CPU
 	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
 	select ARCH_NO_COHERENT_DMA_MMAP if !MMU
diff --git a/fs/Kconfig.binfmt b/fs/Kconfig.binfmt
index 82f7d7f234f3..286b425b30b9 100644
--- a/fs/Kconfig.binfmt
+++ b/fs/Kconfig.binfmt
@@ -91,9 +91,12 @@ config BINFMT_SCRIPT
 
 	  Most systems will not boot if you say M or N here.  If unsure, say Y.
 
+config ARCH_HAS_BINFMT_FLAT
+	bool
+
 config BINFMT_FLAT
 	bool "Kernel support for flat binaries"
-	depends on !MMU || ARM || M68K
+	depends on ARCH_HAS_BINFMT_FLAT
 	help
 	  Support uClinux FLAT format binaries.
 
-- 
2.20.1


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  parent reply index

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-13  7:08 binfmt_flat cleanups and RISC-V support v2 Christoph Hellwig
2019-06-13  7:08 ` [PATCH 01/17] binfmt_flat: remove flat_reloc_valid Christoph Hellwig
2019-06-13  7:08 ` [PATCH 02/17] binfmt_flat: remove flat_set_persistent Christoph Hellwig
2019-06-13  7:08 ` [PATCH 03/17] binfmt_flat: provide a default version of flat_get_relocate_addr Christoph Hellwig
2019-06-13  7:08 ` [PATCH 04/17] binfmt_flat: remove flat_old_ram_flag Christoph Hellwig
2019-06-13  7:08 ` [PATCH 05/17] binfmt_flat: replace flat_argvp_envp_on_stack with a Kconfig variable Christoph Hellwig
2019-06-13  7:08 ` [PATCH 06/17] binfmt_flat: remove the uapi <linux/flat.h> header Christoph Hellwig
2019-06-13  7:08 ` [PATCH 07/17] binfmt_flat: remove the unused OLD_FLAT_FLAG_RAM definition Christoph Hellwig
2019-06-13  7:08 ` [PATCH 08/17] binfmt_flat: consolidate two version of flat_v2_reloc_t Christoph Hellwig
2019-06-13  7:08 ` [PATCH 09/17] binfmt_flat: use fixed size type for the on-disk format Christoph Hellwig
2019-06-13  7:08 ` [PATCH 10/17] binfmt_flat: add endianess annotations Christoph Hellwig
2019-06-13  7:08 ` Christoph Hellwig [this message]
2019-06-13  7:08 ` [PATCH 12/17] binfmt_flat: make support for old format binaries optional Christoph Hellwig
2019-06-13  7:08 ` [PATCH 13/17] binfmt_flat: provide an asm-generic/flat.h Christoph Hellwig
2019-06-13  7:09 ` [PATCH 14/17] binfmt_flat: remove the persistent argument from flat_get_addr_from_rp Christoph Hellwig
2019-06-13  7:09 ` [PATCH 15/17] binfmt_flat: move the MAX_SHARED_LIBS definition to binfmt_flat.c Christoph Hellwig
2019-06-14  8:35   ` Sergei Shtylyov
2019-06-13  7:09 ` [PATCH 16/17] binfmt_flat: don't offset the data start Christoph Hellwig
2019-06-13  7:09 ` [PATCH 17/17] riscv: add binfmt_flat support Christoph Hellwig
2019-06-13 23:38 ` binfmt_flat cleanups and RISC-V support v2 Greg Ungerer

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