Re: [PATCH 30/30] x32: Add x32 VDSO support

[PATCH 00/30] RFC: x32 support · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 01/30] x86: Factor out TIF_IA32 from 32-bit address space · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 02/30] x86-64: Use explicit sizes in sigcontext.h, prepare for x32 · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
Re: [PATCH 02/30] x86-64: Use explicit sizes in sigcontext.h, prepare for x32 · Linus Torvalds <torvalds@linux-foundation.org> · 2012-02-20
Re: [PATCH 02/30] x86-64: Use explicit sizes in sigcontext.h, prepare for x32 · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
Re: [PATCH 02/30] x86-64: Use explicit sizes in sigcontext.h, prepare for x32 · Arnd Bergmann <arnd@arndb.de> · 2012-02-22
Re: [PATCH 02/30] x86-64: Use explicit sizes in sigcontext.h, prepare for x32 · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-22
Re: [PATCH 02/30] x86-64: Use explicit sizes in sigcontext.h, prepare for x32 · Arnd Bergmann <arnd@arndb.de> · 2012-02-22
Re: [PATCH 02/30] x86-64: Use explicit sizes in sigcontext.h, prepare for x32 · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-22
Re: [PATCH 02/30] x86-64: Use explicit sizes in sigcontext.h, prepare for x32 · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-24
Re: [PATCH 02/30] x86-64: Use explicit sizes in sigcontext.h, prepare for x32 · "H. Peter Anvin" <hpa@kernel.org> · 2012-03-06
[PATCH 03/30] sysinfo: Move struct sysinfo to a separate header file · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 04/30] posix_types: Introduce __kernel_[u]long_t · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 05/30] x32: Create posix_types_x32.h · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 06/30] sysinfo: Use explicit types in <linux/sysinfo.h> · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
Re: [PATCH 06/30] sysinfo: Use explicit types in <linux/sysinfo.h> · Geert Uytterhoeven <geert@linux-m68k.org> · 2012-02-20
Re: [PATCH 06/30] sysinfo: Use explicit types in <linux/sysinfo.h> · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
Re: [PATCH 06/30] sysinfo: Use explicit types in <linux/sysinfo.h> · Geert Uytterhoeven <geert@linux-m68k.org> · 2012-02-20
Re: [PATCH 06/30] sysinfo: Use explicit types in <linux/sysinfo.h> · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 07/30] compat: Introduce COMPAT_USE_64BIT_TIME · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 08/30] compat: Use COMPAT_USE_64BIT_TIME in the lp driver · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
Re: [PATCH 08/30] compat: Use COMPAT_USE_64BIT_TIME in the lp driver · Linus Torvalds <torvalds@linux-foundation.org> · 2012-02-20
Re: [PATCH 08/30] compat: Use COMPAT_USE_64BIT_TIME in the lp driver · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 0/7] COMPAT_USE_64BIT_TIME v2 · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 1/7] compat: Introduce COMPAT_USE_64BIT_TIME · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 2/7] compat: Add helper functions to read/write struct timeval, timespec · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 3/7] compat: Handle COMPAT_USE_64BIT_TIME in the lp driver · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 4/7] compat: Use COMPAT_USE_64BIT_TIME in the input subsystem · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 5/7] compat: Use COMPAT_USE_64BIT_TIME in the Bluetooth subsystem · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 6/7] compat: Use COMPAT_USE_64BIT_TIME in net/compat.c · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 7/7] compat: Handle COMPAT_USE_64BIT_TIME in net/socket.c · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
Re: [PATCH 0/7] COMPAT_USE_64BIT_TIME v2 · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
Re: [PATCH 0/7] COMPAT_USE_64BIT_TIME v2 · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 09/30] compat: Use COMPAT_USE_64BIT_TIME in the input subsystem · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 10/30] compat: Use COMPAT_USE_64BIT_TIME in the Bluetooth subsystem · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
Re: [PATCH 10/30] compat: Use COMPAT_USE_64BIT_TIME in the Bluetooth subsystem · Gustavo Padovan <hidden> · 2012-02-21
Re: [PATCH 10/30] compat: Use COMPAT_USE_64BIT_TIME in the Bluetooth subsystem · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-21
Re: [PATCH 10/30] compat: Use COMPAT_USE_64BIT_TIME in the Bluetooth subsystem · Jiri Kosina <hidden> · 2012-02-22
Re: [PATCH 10/30] compat: Use COMPAT_USE_64BIT_TIME in the Bluetooth subsystem · Gustavo Padovan <hidden> · 2012-02-22
[PATCH 11/30] aio: Use __kernel_ulong_t to define aio_context_t · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 12/30] compat: Create compat_sys_p{read,write}v64 · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 13/30] elf: Allow core dump-related fields to be overridden · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 14/30] x86-64: Add prototype for old_rsp to a header file · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 15/30] x32: Add a thread flag for x32 processes · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 16/30] x86-64, ia32: Drop sys32_rt_sigprocmask · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 17/30] x32: Add x32 system calls to syscall/syscall_64.tbl · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 18/30] x32: Generate <asm/unistd_x32.h> · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 19/30] x32: Generate <asm/unistd_64_x32.h> · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 20/30] x86: Move some signal-handling definitions to a common header · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 21/30] x32: Export setup/restore_sigcontext from signal.c · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 22/30] x32: Add struct ucontext_x32 · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 23/30] x32: Add rt_sigframe_x32 · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 24/30] x32: Handle the x32 system call flag · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 25/30] x86: Add #ifdef CONFIG_COMPAT to <asm/sys_ia32.h> · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 26/30] x32: Signal-related system calls · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 27/30] x32: Handle process creation · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 28/30] x32: If configured, add x32 system calls to system call tables · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 29/30] x32: Allow x32 to be configured · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
[PATCH 30/30] x32: Add x32 VDSO support · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-20
Re: [PATCH 30/30] x32: Add x32 VDSO support · Andy Lutomirski <hidden> · 2012-02-21
Re: [PATCH 30/30] x32: Add x32 VDSO support · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-21
Re: [PATCH 30/30] x32: Add x32 VDSO support · Andrew Lutomirski <hidden> · 2012-02-21
Re: [PATCH 30/30] x32: Add x32 VDSO support · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-21
Re: [PATCH 30/30] x32: Add x32 VDSO support · Andrew Lutomirski <hidden> · 2012-02-21
Re: [PATCH 30/30] x32: Add x32 VDSO support · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-21
Re: [PATCH 30/30] x32: Add x32 VDSO support · Andrew Lutomirski <hidden> · 2012-02-21
Re: [PATCH 30/30] x32: Add x32 VDSO support · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-21
Re: [PATCH 30/30] x32: Add x32 VDSO support · Andrew Lutomirski <hidden> · 2012-02-21
Re: [PATCH 30/30] x32: Add x32 VDSO support · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-21
Re: [PATCH 30/30] x32: Add x32 VDSO support · Andrew Lutomirski <hidden> · 2012-02-21
Re: [PATCH 30/30] x32: Add x32 VDSO support · "H. Peter Anvin" <hpa@zytor.com> · 2012-02-21

From: "H. Peter Anvin" <hpa@zytor.com>
Date: 2012-02-21 03:58:45
Also in: lkml

On 02/20/2012 04:12 PM, Andy Lutomirski wrote:

Would it make sense to remove the non-__vdso-prefixed weak symbols?
AFAICT they are somewhere between useless (because the __vdso symbols
are unambiguous), confusing (has anyone not read this and said "huh?"),
and wrong (they are not interchangeable with glibc's symbols as they
return different values).

We're stuck with them on x86-64, but x32 is new and has no
backwards-compatibility issues.

What about non-glibc?

	-hpa


-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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