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From: Michal Suchanek <msuchanek@suse.de>
To: linuxppc-dev@lists.ozlabs.org
Cc: Michal Suchanek <msuchanek@suse.de>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	Michael Ellerman <mpe@ellerman.id.au>,
	Oleg Nesterov <oleg@redhat.com>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	Christian Brauner <christian@brauner.io>,
	Nicholas Piggin <npiggin@gmail.com>,
	Allison Randal <allison@lohutok.net>,
	"Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Breno Leitao <leitao@debian.org>,
	Christophe Leroy <christophe.leroy@c-s.fr>,
	Claudio Carvalho <cclaudio@linux.ibm.com>,
	Russell Currey <ruscur@russell.cc>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>,
	Arnd Bergmann <arnd@arndb.de>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	Firoz Khan <firoz.khan@linaro.org>,
	Dmitry Vyukov <dvyukov@google.com>,
	Masahiro Yamada <yamada.masahiro@socionext.com>,
	Hari Bathini <hbathini@linux.ibm.com>,
	Andrew Donnellan <andrew.donnellan@au1.ibm.com>,
	Nicolai Stange <nstange@suse.de>,
	Valentin Schneider <valentin.schneider@arm.com>,
	Diana Craciun <diana.craciun@nxp.com>,
	Daniel Axtens <dja@axtens.net>,
	Michael Neuling <mikey@neuling.org>,
	Gustavo Romero <gromero@linux.ibm.com>,
	Mathieu Malaterre <malat@debian.org>,
	"Steven Rostedt" <rostedt@goodmis.org>,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	Heiko Carstens <heiko.carstens@de.ibm.com>,
	David Howells <dhowells@redhat.com>,
	Brajeswar Ghosh <brajeswar.linux@gmail.com>,
	Jagadeesh Pagadala <jagdsh.linux@gmail.com>,
	David Hildenbrand <david@redhat.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Madhavan Srinivasan <maddy@linux.vnet.ibm.com>,
	linux-kernel@vger.kernel.org
Subject: [PATCH 32/33] powerpc/64: Make COMPAT user-selectable disabled on littleendian by default.
Date: Tue, 12 Nov 2019 17:52:30 +0100	[thread overview]
Message-ID: <de25301cfce69b8f82eb4c0d2511d2056739d33f.1573576649.git.msuchanek@suse.de> (raw)
In-Reply-To: <cover.1573576649.git.msuchanek@suse.de>

On bigendian ppc64 it is common to have 32bit legacy binaries but much
less so on littleendian.

Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
v3: make configurable
---
 arch/powerpc/Kconfig | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 3e56c9c2f16e..825528db2921 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -266,8 +266,9 @@ config PANIC_TIMEOUT
 	default 180
 
 config COMPAT
-	bool
-	default y if PPC64
+	bool "Enable support for 32bit binaries"
+	depends on PPC64
+	default y if !CPU_LITTLE_ENDIAN
 	select COMPAT_BINFMT_ELF
 	select ARCH_WANT_OLD_COMPAT_IPC
 	select COMPAT_OLD_SIGACTION
-- 
2.23.0


WARNING: multiple messages have this Message-ID (diff)
From: Michal Suchanek <msuchanek@suse.de>
To: linuxppc-dev@lists.ozlabs.org
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>,
	David Hildenbrand <david@redhat.com>,
	Heiko Carstens <heiko.carstens@de.ibm.com>,
	Claudio Carvalho <cclaudio@linux.ibm.com>,
	David Howells <dhowells@redhat.com>,
	Masahiro Yamada <yamada.masahiro@socionext.com>,
	Paul Mackerras <paulus@samba.org>,
	Christian Brauner <christian@brauner.io>,
	Breno Leitao <leitao@debian.org>,
	Michael Neuling <mikey@neuling.org>,
	Nicolai Stange <nstange@suse.de>,
	Diana Craciun <diana.craciun@nxp.com>,
	Firoz Khan <firoz.khan@linaro.org>,
	Allison Randal <allison@lohutok.net>,
	Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	"Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>,
	Michal Suchanek <msuchanek@suse.de>,
	Valentin Schneider <valentin.schneider@arm.com>,
	Jagadeesh Pagadala <jagdsh.linux@gmail.com>,
	Arnd Bergmann <arnd@arndb.de>,
	Nicholas Piggin <npiggin@gmail.com>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	Steven Rostedt <rostedt@goodmis.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Dmitry Vyukov <dvyukov@google.com>,
	Daniel Axtens <dja@axtens.net>,
	Gustavo Romero <gromero@linux.ibm.com>,
	Mathieu Malaterre <malat@debian.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Oleg Nesterov <oleg@redhat.com>,
	linux-kernel@vger.kernel.org,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	Andrew Donnellan <andrew.donnellan@au1.ibm.com>,
	Brajeswar Ghosh <brajeswar.linux@gmail.com>,
	Hari Bathini <hbathini@linux.ibm.com>,
	Andrew Morton <akpm@linux-foundation.org>
Subject: [PATCH 32/33] powerpc/64: Make COMPAT user-selectable disabled on littleendian by default.
Date: Tue, 12 Nov 2019 17:52:30 +0100	[thread overview]
Message-ID: <de25301cfce69b8f82eb4c0d2511d2056739d33f.1573576649.git.msuchanek@suse.de> (raw)
In-Reply-To: <cover.1573576649.git.msuchanek@suse.de>

On bigendian ppc64 it is common to have 32bit legacy binaries but much
less so on littleendian.

Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
v3: make configurable
---
 arch/powerpc/Kconfig | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 3e56c9c2f16e..825528db2921 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -266,8 +266,9 @@ config PANIC_TIMEOUT
 	default 180
 
 config COMPAT
-	bool
-	default y if PPC64
+	bool "Enable support for 32bit binaries"
+	depends on PPC64
+	default y if !CPU_LITTLE_ENDIAN
 	select COMPAT_BINFMT_ELF
 	select ARCH_WANT_OLD_COMPAT_IPC
 	select COMPAT_OLD_SIGACTION
-- 
2.23.0


  parent reply	other threads:[~2019-11-12 16:54 UTC|newest]

Thread overview: 74+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-12 16:51 [PATCH 00/33] exception cleanup, syscall in C and !COMPAT Michal Suchanek
2019-11-12 16:51 ` Michal Suchanek
2019-11-12 16:51 ` [PATCH 01/33] powerpc/64s/exception: Introduce INT_DEFINE parameter block for code generation Michal Suchanek
2019-11-12 16:51   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 02/33] powerpc/64s/exception: Add GEN_COMMON macro that uses INT_DEFINE parameters Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 03/33] powerpc/64s/exception: Add GEN_KVM " Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 04/33] powerpc/64s/exception: Expand EXC_COMMON and EXC_COMMON_ASYNC macros Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 05/33] powerpc/64s/exception: Move all interrupt handlers to new style code gen macros Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 06/33] powerpc/64s/exception: Remove old INT_ENTRY macro Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 07/33] powerpc/64s/exception: Remove old INT_COMMON macro Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 08/33] powerpc/64s/exception: Remove old INT_KVM_HANDLER Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 09/33] powerpc/64s/exception: Add ISIDE option Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 10/33] powerpc/64s/exception: move real->virt switch into the common handler Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 11/33] powerpc/64s/exception: move soft-mask test to common code Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 12/33] powerpc/64s/exception: move KVM " Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 13/33] powerpc/64s/exception: remove confusing IEARLY option Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 14/33] powerpc/64s/exception: remove the SPR saving patch code macros Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 15/33] powerpc/64s/exception: trim unused arguments from KVMTEST macro Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 16/33] powerpc/64s/exception: hdecrementer avoid touching the stack Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 17/33] powerpc/64s/exception: re-inline some handlers Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 18/33] powerpc/64s/exception: Clean up SRR specifiers Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 19/33] powerpc/64s/exception: add more comments for interrupt handlers Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 20/33] powerpc/64s/exception: only test KVM in SRR interrupts when PR KVM is supported Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 21/33] powerpc/64s/exception: soft nmi interrupt should not use ret_from_except Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 22/33] powerpc/64: system call remove non-volatile GPR save optimisation Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 23/33] powerpc/64: system call implement the bulk of the logic in C Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 24/33] powerpc/64s: interrupt return " Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 25/33] powerpc/64s/exception: remove lite interrupt return Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 26/33] powerpc: Add back __ARCH_WANT_SYS_LLSEEK macro Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 27/33] powerpc: move common register copy functions from signal_32.c to signal.c Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 28/33] powerpc/perf: consolidate read_user_stack_32 Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 29/33] powerpc/perf: consolidate valid_user_sp Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 30/33] powerpc/perf: remove current_is_64bit() Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-12 16:52 ` [PATCH 31/33] powerpc/64: make buildable without CONFIG_COMPAT Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek
2019-11-13  3:02   ` Nicholas Piggin
2019-11-13  3:02     ` Nicholas Piggin
2019-11-13  8:41     ` Michal Suchánek
2019-11-13  8:41       ` Michal Suchánek
2019-11-13 10:04       ` Arnd Bergmann
2019-11-13 10:04         ` Arnd Bergmann
2019-11-12 16:52 ` Michal Suchanek [this message]
2019-11-12 16:52   ` [PATCH 32/33] powerpc/64: Make COMPAT user-selectable disabled on littleendian by default Michal Suchanek
2019-11-12 16:52 ` [PATCH 33/33] powerpc/perf: split callchain.c by bitness Michal Suchanek
2019-11-12 16:52   ` Michal Suchanek

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