From: "H. Peter Anvin" <hpa@zytor.com>
To: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org
Cc: mingo@kernel.org, tglx@linutronix.de, hpa@zytor.com,
torvalds@linux-foundation.org, akpm@linux-foundation.org,
hjl.tools@gmail.com
Subject: [PATCH 29/30] x32: Allow x32 to be configured
Date: Sun, 19 Feb 2012 16:08:07 -0800 [thread overview]
Message-ID: <1329696488-16970-30-git-send-email-hpa@zytor.com> (raw)
In-Reply-To: <1329696488-16970-1-git-send-email-hpa@zytor.com>
From: "H. J. Lu" <hjl.tools@gmail.com>
At this point, one should be able to build an x32 kernel.
Note that for now we depend on CONFIG_IA32_EMULATION. Long term, x32
and IA32 should be detangled.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
---
arch/x86/Kconfig | 21 +++++++++++++++++----
1 files changed, 17 insertions(+), 4 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 5bed94e..c9d6c9e 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2165,9 +2165,9 @@ config IA32_EMULATION
depends on X86_64
select COMPAT_BINFMT_ELF
---help---
- Include code to run 32-bit programs under a 64-bit kernel. You should
- likely turn this on, unless you're 100% sure that you don't have any
- 32-bit programs left.
+ Include code to run legacy 32-bit programs under a
+ 64-bit kernel. You should likely turn this on, unless you're
+ 100% sure that you don't have any 32-bit programs left.
config IA32_AOUT
tristate "IA32 a.out support"
@@ -2175,9 +2175,22 @@ config IA32_AOUT
---help---
Support old a.out binaries in the 32bit emulation.
+config X86_X32_ABI
+ bool "x32 ABI for 64-bit mode (EXPERIMENTAL)"
+ depends on X86_64 && IA32_EMULATION && EXPERIMENTAL
+ ---help---
+ Include code to run binaries for the x32 native 32-bit ABI
+ for 64-bit processors. An x32 process gets access to the
+ full 64-bit register file and wide data path while leaving
+ pointers at 32 bits for smaller memory footprint.
+
+ You will need a recent binutils (2.22 or later) with
+ elf32_x86_64 support enabled to compile a kernel with this
+ option set.
+
config COMPAT
def_bool y
- depends on IA32_EMULATION
+ depends on IA32_EMULATION || X86_X32_ABI
config COMPAT_FOR_U64_ALIGNMENT
def_bool COMPAT
--
1.7.6.5
next prev parent reply other threads:[~2012-02-20 0:22 UTC|newest]
Thread overview: 106+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-20 0:07 [PATCH 00/30] RFC: x32 support H. Peter Anvin
2012-02-20 0:07 ` [PATCH 01/30] x86: Factor out TIF_IA32 from 32-bit address space H. Peter Anvin
2012-02-20 0:07 ` [PATCH 02/30] x86-64: Use explicit sizes in sigcontext.h, prepare for x32 H. Peter Anvin
2012-02-20 0:51 ` Linus Torvalds
2012-02-20 0:56 ` H. Peter Anvin
2012-02-22 12:22 ` Arnd Bergmann
2012-02-22 18:14 ` H. Peter Anvin
2012-02-22 21:23 ` Arnd Bergmann
2012-02-22 21:55 ` H. Peter Anvin
2012-02-24 2:33 ` H. Peter Anvin
2012-03-06 5:25 ` H. Peter Anvin
2012-02-20 0:07 ` [PATCH 03/30] sysinfo: Move struct sysinfo to a separate header file H. Peter Anvin
2012-02-20 0:07 ` [PATCH 04/30] posix_types: Introduce __kernel_[u]long_t H. Peter Anvin
2012-02-20 0:07 ` [PATCH 05/30] x32: Create posix_types_x32.h H. Peter Anvin
2012-02-20 0:07 ` [PATCH 06/30] sysinfo: Use explicit types in <linux/sysinfo.h> H. Peter Anvin
2012-02-20 12:12 ` Geert Uytterhoeven
2012-02-20 17:29 ` H. Peter Anvin
2012-02-20 20:01 ` Geert Uytterhoeven
2012-02-20 20:44 ` H. Peter Anvin
2012-02-20 0:07 ` [PATCH 07/30] compat: Introduce COMPAT_USE_64BIT_TIME H. Peter Anvin
2012-02-20 0:07 ` [PATCH 08/30] compat: Use COMPAT_USE_64BIT_TIME in the lp driver H. Peter Anvin
2012-02-20 0:56 ` Linus Torvalds
2012-02-20 0:59 ` H. Peter Anvin
2012-02-20 2:22 ` [PATCH 0/7] COMPAT_USE_64BIT_TIME v2 H. Peter Anvin
2012-02-20 2:22 ` [PATCH 1/7] compat: Introduce COMPAT_USE_64BIT_TIME H. Peter Anvin
2012-02-20 2:22 ` [PATCH 2/7] compat: Add helper functions to read/write struct timeval, timespec H. Peter Anvin
2012-02-20 2:22 ` [PATCH 3/7] compat: Handle COMPAT_USE_64BIT_TIME in the lp driver H. Peter Anvin
2012-02-20 2:22 ` [PATCH 4/7] compat: Use COMPAT_USE_64BIT_TIME in the input subsystem H. Peter Anvin
2012-02-20 2:22 ` [PATCH 5/7] compat: Use COMPAT_USE_64BIT_TIME in the Bluetooth subsystem H. Peter Anvin
2012-02-20 2:22 ` [PATCH 6/7] compat: Use COMPAT_USE_64BIT_TIME in net/compat.c H. Peter Anvin
2012-02-20 2:22 ` [PATCH 7/7] compat: Handle COMPAT_USE_64BIT_TIME in net/socket.c H. Peter Anvin
2012-02-20 2:42 ` [PATCH 0/7] COMPAT_USE_64BIT_TIME v2 H. Peter Anvin
2012-02-20 6:22 ` H. Peter Anvin
2012-02-20 0:07 ` [PATCH 09/30] compat: Use COMPAT_USE_64BIT_TIME in the input subsystem H. Peter Anvin
2012-02-20 0:07 ` [PATCH 10/30] compat: Use COMPAT_USE_64BIT_TIME in the Bluetooth subsystem H. Peter Anvin
2012-02-21 19:05 ` Gustavo Padovan
2012-02-21 19:15 ` H. Peter Anvin
2012-02-22 13:47 ` Jiri Kosina
2012-02-22 14:45 ` Gustavo Padovan
2012-02-20 0:07 ` [PATCH 11/30] aio: Use __kernel_ulong_t to define aio_context_t H. Peter Anvin
2012-02-20 0:07 ` [PATCH 12/30] compat: Create compat_sys_p{read,write}v64 H. Peter Anvin
2012-02-20 0:07 ` [PATCH 13/30] elf: Allow core dump-related fields to be overridden H. Peter Anvin
2012-02-20 0:07 ` [PATCH 14/30] x86-64: Add prototype for old_rsp to a header file H. Peter Anvin
2012-02-20 0:07 ` [PATCH 15/30] x32: Add a thread flag for x32 processes H. Peter Anvin
2012-02-20 0:07 ` [PATCH 16/30] x86-64, ia32: Drop sys32_rt_sigprocmask H. Peter Anvin
2012-02-20 0:07 ` [PATCH 17/30] x32: Add x32 system calls to syscall/syscall_64.tbl H. Peter Anvin
2012-02-20 0:07 ` [PATCH 18/30] x32: Generate <asm/unistd_x32.h> H. Peter Anvin
2012-02-20 0:07 ` [PATCH 19/30] x32: Generate <asm/unistd_64_x32.h> H. Peter Anvin
2012-02-20 0:07 ` [PATCH 20/30] x86: Move some signal-handling definitions to a common header H. Peter Anvin
2012-02-20 0:07 ` [PATCH 21/30] x32: Export setup/restore_sigcontext from signal.c H. Peter Anvin
2012-02-20 0:08 ` [PATCH 22/30] x32: Add struct ucontext_x32 H. Peter Anvin
2012-02-20 0:08 ` [PATCH 23/30] x32: Add rt_sigframe_x32 H. Peter Anvin
2012-02-20 0:08 ` [PATCH 24/30] x32: Handle the x32 system call flag H. Peter Anvin
2012-02-20 0:08 ` [PATCH 25/30] x86: Add #ifdef CONFIG_COMPAT to <asm/sys_ia32.h> H. Peter Anvin
2012-02-20 0:08 ` [PATCH 26/30] x32: Signal-related system calls H. Peter Anvin
2012-02-20 0:08 ` [PATCH 27/30] x32: Handle process creation H. Peter Anvin
2012-02-20 0:08 ` [PATCH 28/30] x32: If configured, add x32 system calls to system call tables H. Peter Anvin
2012-02-20 0:08 ` H. Peter Anvin [this message]
2012-02-20 0:08 ` [PATCH 30/30] x32: Add x32 VDSO support H. Peter Anvin
2012-02-21 0:12 ` Andy Lutomirski
2012-02-21 3:58 ` H. Peter Anvin
2012-02-21 16:52 ` Andrew Lutomirski
2012-02-21 17:51 ` H. Peter Anvin
2012-02-21 18:54 ` Andrew Lutomirski
2012-02-21 19:03 ` H. Peter Anvin
2012-02-21 19:29 ` Andrew Lutomirski
2012-02-21 19:37 ` H. Peter Anvin
2012-02-21 19:40 ` Andrew Lutomirski
2012-02-21 19:49 ` H. Peter Anvin
2012-02-21 19:51 ` Andrew Lutomirski
2012-02-21 19:56 ` H. Peter Anvin
2012-02-23 4:49 ` [tip:x86/x32] x32: Drop non-__vdso weak symbols from the x32 VDSO tip-bot for H. Peter Anvin
2012-02-23 10:55 ` Ingo Molnar
2012-02-23 14:36 ` H. Peter Anvin
2012-02-27 22:21 ` [tip:x86/x32] x32: Warn and disable rather than error if binutils too old tip-bot for H. Peter Anvin
2012-02-28 9:49 ` [tip:x86/x32] x86/x32: Fix the binutils auto-detect tip-bot for Ingo Molnar
2012-03-06 0:56 ` [tip:x86/x32] x32: Provide separate is_ia32_task() and is_x32_task () predicates tip-bot for H. Peter Anvin
2012-03-06 0:56 ` [tip:x86/x32] x32: Switch to a 64-bit clock_t tip-bot for H. Peter Anvin
2012-03-06 0:57 ` [tip:x86/x32] x32: Add ptrace for x32 tip-bot for H.J. Lu
2012-03-14 5:58 ` [tip:x86/x32] x32: Fix stupid ia32/ x32 inversion in the siginfo format tip-bot for H. Peter Anvin
2012-03-14 21:43 ` [tip:x86/x32] x32: Fix alignment fail in struct compat_siginfo tip-bot for H. Peter Anvin
2012-03-14 23:17 ` H.J. Lu
2012-03-14 23:19 ` H. Peter Anvin
2012-03-15 0:33 ` H.J. Lu
2012-03-14 23:33 ` Derek Fawcus
2012-03-14 23:44 ` H. Peter Anvin
2012-04-18 17:38 ` H.J. Lu
2012-04-18 17:47 ` H. Peter Anvin
2012-04-18 18:01 ` H.J. Lu
2012-04-18 18:10 ` H. Peter Anvin
2012-04-18 18:15 ` H.J. Lu
2012-04-18 18:21 ` H. Peter Anvin
2012-04-18 18:33 ` H.J. Lu
2012-04-18 19:03 ` H. Peter Anvin
2012-04-18 21:24 ` H. Peter Anvin
2012-04-18 21:49 ` H.J. Lu
2012-04-18 21:58 ` H. Peter Anvin
2012-04-18 22:58 ` H.J. Lu
2012-04-18 22:55 ` H.J. Lu
2012-04-18 23:48 ` H. Peter Anvin
2012-04-18 23:54 ` H.J. Lu
2012-04-19 0:09 ` H. Peter Anvin
2012-04-19 0:14 ` H.J. Lu
2012-04-23 23:49 ` [tip:x86/urgent] asm-generic: Allow overriding clock_t and add attributes to siginfo_t tip-bot for H. Peter Anvin
2012-04-23 23:50 ` [tip:x86/urgent] x32, siginfo: Provide proper overrides for x32 siginfo_t tip-bot for H. Peter Anvin
2012-04-24 1:19 ` tip-bot for H. Peter Anvin
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