Re: define-auxiliary-vector-size-at_vector_size.patch added to -mm tree

From: H. J. Lu
Date: Wed Jul 27 2005 - 13:44:56 EST

Next message: Kyle McMartin: "Re: [2.6 patch] schedule obsolete OSS drivers for removal"
Previous message: Greg KH: "Re: [PATCH 8/8] pci and yenta: pcibios_bus_to_resource"
In reply to: Andrew Morton: "Re: define-auxiliary-vector-size-at_vector_size.patch added to -mmtree"
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On Tue, Jul 26, 2005 at 10:06:37PM -0700, Andrew Morton wrote:
> "H. J. Lu" <hjl@xxxxxxxxx> wrote:
> >
> > On Tue, Jul 26, 2005 at 09:53:23PM -0700, Andrew Morton wrote:
> > > "H. J. Lu" <hjl@xxxxxxxxx> wrote:
> > > >
> > > > My patch breaks x86_64 build. This patch will fix x86_64 build. I am
> > > > also enclosing the updated full patch.
> > >
> > > It now breaks ppc64
> > >
> > > include/asm/elf.h: In function `dump_task_regs':
> > > include/asm/elf.h:177: error: dereferencing pointer to incomplete type
> > >
> > > That's because pt_regs isn't known, because sched.h is including elf.h
> > > before pt_regs gets defined. This is a pretty fragile area I'm afraid.
> >
> > Should we creat a new header file like auxvector.h? Auxiliary isn't
> > ELF specific anyway.
>
> That would work.

How about this patch?

H.J.
--- linux/include/asm-alpha/auxvec.h.auxv 2005-07-27 11:34:19.226937310 -0700
+++ linux/include/asm-alpha/auxvec.h 2005-07-27 11:34:19.227937145 -0700
@@ -0,0 +1,24 @@
+#ifndef __ASM_ALPHA_AUXVEC_H
+#define __ASM_ALPHA_AUXVEC_H
+
+/* Reserve these numbers for any future use of a VDSO. */
+#if 0
+#define AT_SYSINFO 32
+#define AT_SYSINFO_EHDR 33
+#endif
+
+/* More complete cache descriptions than AT_[DIU]CACHEBSIZE. If the
+ value is -1, then the cache doesn't exist. Otherwise:
+
+ bit 0-3: Cache set-associativity; 0 means fully associative.
+ bit 4-7: Log2 of cacheline size.
+ bit 8-31: Size of the entire cache >> 8.
+ bit 32-63: Reserved.
+*/
+
+#define AT_L1I_CACHESHAPE 34
+#define AT_L1D_CACHESHAPE 35
+#define AT_L2_CACHESHAPE 36
+#define AT_L3_CACHESHAPE 37
+
+#endif /* __ASM_ALPHA_AUXVEC_H */
--- linux/include/asm-alpha/elf.h.auxv 2005-03-01 23:38:09.000000000 -0800
+++ linux/include/asm-alpha/elf.h 2005-07-27 11:34:19.227937145 -0700
@@ -1,6 +1,8 @@
#ifndef __ASM_ALPHA_ELF_H
#define __ASM_ALPHA_ELF_H

+#include <asm/auxvec.h>
+
/* Special values for the st_other field in the symbol table. */

#define STO_ALPHA_NOPV 0x80
@@ -142,26 +144,6 @@ extern int dump_elf_task_fp(elf_fpreg_t
: amask (AMASK_CIX) ? "ev6" : "ev67"); \
})

-/* Reserve these numbers for any future use of a VDSO. */
-#if 0
-#define AT_SYSINFO 32
-#define AT_SYSINFO_EHDR 33
-#endif
-
-/* More complete cache descriptions than AT_[DIU]CACHEBSIZE. If the
- value is -1, then the cache doesn't exist. Otherwise:
-
- bit 0-3: Cache set-associativity; 0 means fully associative.
- bit 4-7: Log2 of cacheline size.
- bit 8-31: Size of the entire cache >> 8.
- bit 32-63: Reserved.
-*/
-
-#define AT_L1I_CACHESHAPE 34
-#define AT_L1D_CACHESHAPE 35
-#define AT_L2_CACHESHAPE 36
-#define AT_L3_CACHESHAPE 37
-
#ifdef __KERNEL__

#define SET_PERSONALITY(EX, IBCS2) \
--- linux/include/asm-arm/auxvec.h.auxv 2005-07-27 11:34:19.228936980 -0700
+++ linux/include/asm-arm/auxvec.h 2005-07-27 11:34:19.228936980 -0700
@@ -0,0 +1,4 @@
+#ifndef __ASMARM_AUXVEC_H
+#define __ASMARM_AUXVEC_H
+
+#endif
--- linux/include/asm-arm26/auxvec.h.auxv 2005-07-27 11:34:19.229936815 -0700
+++ linux/include/asm-arm26/auxvec.h 2005-07-27 11:34:19.229936815 -0700
@@ -0,0 +1,4 @@
+#ifndef __ASMARM_AUXVEC_H
+#define __ASMARM_AUXVEC_H
+
+#endif
--- linux/include/asm-cris/auxvec.h.auxv 2005-07-27 11:34:19.229936815 -0700
+++ linux/include/asm-cris/auxvec.h 2005-07-27 11:34:19.229936815 -0700
@@ -0,0 +1,4 @@
+#ifndef __ASMCRIS_AUXVEC_H
+#define __ASMCRIS_AUXVEC_H
+
+#endif
--- linux/include/asm-h8300/auxvec.h.auxv 2005-07-27 11:34:19.230936650 -0700
+++ linux/include/asm-h8300/auxvec.h 2005-07-27 11:34:19.230936650 -0700
@@ -0,0 +1,4 @@
+#ifndef __ASMH8300_AUXVEC_H
+#define __ASMH8300_AUXVEC_H
+
+#endif
--- linux/include/asm-i386/auxvec.h.auxv 2005-07-27 11:34:19.230936650 -0700
+++ linux/include/asm-i386/auxvec.h 2005-07-27 11:34:19.230936650 -0700
@@ -0,0 +1,11 @@
+#ifndef __ASMi386_AUXVEC_H
+#define __ASMi386_AUXVEC_H
+
+/*
+ * Architecture-neutral AT_ values in 0-17, leave some room
+ * for more of them, start the x86-specific ones at 32.
+ */
+#define AT_SYSINFO 32
+#define AT_SYSINFO_EHDR 33
+
+#endif
--- linux/include/asm-i386/elf.h.auxv 2005-03-01 23:38:13.000000000 -0800
+++ linux/include/asm-i386/elf.h 2005-07-27 11:36:26.558940660 -0700
@@ -9,6 +9,7 @@
#include <asm/user.h>
#include <asm/processor.h>
#include <asm/system.h> /* for savesegment */
+#include <asm/auxvec.h>

#include <linux/utsname.h>

@@ -109,13 +110,6 @@ typedef struct user_fxsr_struct elf_fpxr

#define ELF_PLATFORM (system_utsname.machine)

-/*
- * Architecture-neutral AT_ values in 0-17, leave some room
- * for more of them, start the x86-specific ones at 32.
- */
-#define AT_SYSINFO 32
-#define AT_SYSINFO_EHDR 33
-
#ifdef __KERNEL__
#define SET_PERSONALITY(ex, ibcs2) do { } while (0)

--- linux/include/asm-ia64/auxvec.h.auxv 2005-07-27 11:34:19.232936321 -0700
+++ linux/include/asm-ia64/auxvec.h 2005-07-27 11:34:19.232936321 -0700
@@ -0,0 +1,11 @@
+#ifndef _ASM_IA64_AUXVEC_H
+#define _ASM_IA64_AUXVEC_H
+
+/*
+ * Architecture-neutral AT_ values are in the range 0-17. Leave some room for more of
+ * them, start the architecture-specific ones at 32.
+ */
+#define AT_SYSINFO 32
+#define AT_SYSINFO_EHDR 33
+
+#endif /* _ASM_IA64_AUXVEC_H */
--- linux/include/asm-ia64/elf.h.auxv 2005-03-01 23:38:13.000000000 -0800
+++ linux/include/asm-ia64/elf.h 2005-07-27 11:34:19.253932858 -0700
@@ -12,6 +12,7 @@

#include <asm/fpu.h>
#include <asm/page.h>
+#include <asm/auxvec.h>

/*
* This is used to ensure we don't load something for the wrong architecture.
@@ -177,13 +178,6 @@ extern void ia64_elf_core_copy_regs (str
relevant until we have real hardware to play with... */
#define ELF_PLATFORM NULL

-/*
- * Architecture-neutral AT_ values are in the range 0-17. Leave some room for more of
- * them, start the architecture-specific ones at 32.
- */
-#define AT_SYSINFO 32
-#define AT_SYSINFO_EHDR 33
-
#ifdef __KERNEL__
#define SET_PERSONALITY(ex, ibcs2) set_personality(PER_LINUX)
#define elf_read_implies_exec(ex, executable_stack) \
--- linux/include/asm-m32r/auxvec.h.auxv 2005-07-27 11:34:19.253932858 -0700
+++ linux/include/asm-m32r/auxvec.h 2005-07-27 11:34:19.253932858 -0700
@@ -0,0 +1,4 @@
+#ifndef _ASM_M32R__AUXVEC_H
+#define _ASM_M32R__AUXVEC_H
+
+#endif /* _ASM_M32R__AUXVEC_H */
--- linux/include/asm-m68k/auxvec.h.auxv 2005-07-27 11:34:19.254932694 -0700
+++ linux/include/asm-m68k/auxvec.h 2005-07-27 11:34:19.254932694 -0700
@@ -0,0 +1,4 @@
+#ifndef __ASMm68k_AUXVEC_H
+#define __ASMm68k_AUXVEC_H
+
+#endif
--- linux/include/asm-m68knommu/auxvec.h.auxv 2005-07-27 11:34:19.254932694 -0700
+++ linux/include/asm-m68knommu/auxvec.h 2005-07-27 11:34:19.255932529 -0700
@@ -0,0 +1,4 @@
+#ifndef __ASMm68k_AUXVEC_H
+#define __ASMm68k_AUXVEC_H
+
+#endif
--- linux/include/asm-mips/auxvec.h.auxv 2005-07-27 11:34:19.255932529 -0700
+++ linux/include/asm-mips/auxvec.h 2005-07-27 11:34:19.255932529 -0700
@@ -0,0 +1,4 @@
+#ifndef _ASM_AUXVEC_H
+#define _ASM_AUXVEC_H
+
+#endif /* _ASM_AUXVEC_H */
--- linux/include/asm-parisc/auxvec.h.auxv 2005-07-27 11:34:19.256932364 -0700
+++ linux/include/asm-parisc/auxvec.h 2005-07-27 11:34:19.256932364 -0700
@@ -0,0 +1,4 @@
+#ifndef __ASMPARISC_AUXVEC_H
+#define __ASMPARISC_AUXVEC_H
+
+#endif
--- linux/include/asm-ppc/auxvec.h.auxv 2005-07-27 11:34:19.256932364 -0700
+++ linux/include/asm-ppc/auxvec.h 2005-07-27 11:34:19.256932364 -0700
@@ -0,0 +1,14 @@
+#ifndef __PPC_AUXVEC_H
+#define __PPC_AUXVEC_H
+
+/*
+ * We need to put in some extra aux table entries to tell glibc what
+ * the cache block size is, so it can use the dcbz instruction safely.
+ */
+#define AT_DCACHEBSIZE 19
+#define AT_ICACHEBSIZE 20
+#define AT_UCACHEBSIZE 21
+/* A special ignored type value for PPC, for glibc compatibility. */
+#define AT_IGNOREPPC 22
+
+#endif
--- linux/include/asm-ppc/elf.h.auxv 2005-03-01 23:37:30.000000000 -0800
+++ linux/include/asm-ppc/elf.h 2005-07-27 11:34:19.257932199 -0700
@@ -7,6 +7,7 @@
#include <asm/types.h>
#include <asm/ptrace.h>
#include <asm/cputable.h>
+#include <asm/auxvec.h>

/* PowerPC relocations defined by the ABIs */
#define R_PPC_NONE 0
@@ -122,16 +123,6 @@ extern int dump_task_fpu(struct task_str

#define SET_PERSONALITY(ex, ibcs2) set_personality((ibcs2)?PER_SVR4:PER_LINUX)

-/*
- * We need to put in some extra aux table entries to tell glibc what
- * the cache block size is, so it can use the dcbz instruction safely.
- */
-#define AT_DCACHEBSIZE 19
-#define AT_ICACHEBSIZE 20
-#define AT_UCACHEBSIZE 21
-/* A special ignored type value for PPC, for glibc compatibility. */
-#define AT_IGNOREPPC 22
-
extern int dcache_bsize;
extern int icache_bsize;
extern int ucache_bsize;
--- linux/include/asm-ppc64/auxvec.h.auxv 2005-07-27 11:34:19.258932034 -0700
+++ linux/include/asm-ppc64/auxvec.h 2005-07-27 11:35:54.618207638 -0700
@@ -0,0 +1,19 @@
+#ifndef __PPC64_AUXVEC_H
+#define __PPC64_AUXVEC_H
+
+/*
+ * We need to put in some extra aux table entries to tell glibc what
+ * the cache block size is, so it can use the dcbz instruction safely.
+ */
+#define AT_DCACHEBSIZE 19
+#define AT_ICACHEBSIZE 20
+#define AT_UCACHEBSIZE 21
+/* A special ignored type value for PPC, for glibc compatibility. */
+#define AT_IGNOREPPC 22
+
+/* The vDSO location. We have to use the same value as x86 for glibc's
+ * sake :-)
+ */
+#define AT_SYSINFO_EHDR 33
+
+#endif /* __PPC64_AUXVEC_H */
--- linux/include/asm-ppc64/elf.h.auxv 2005-07-08 11:50:09.000000000 -0700
+++ linux/include/asm-ppc64/elf.h 2005-07-27 11:35:08.815760333 -0700
@@ -4,6 +4,7 @@
#include <asm/types.h>
#include <asm/ptrace.h>
#include <asm/cputable.h>
+#include <asm/auxvec.h>

/* PowerPC relocations defined by the ABIs */
#define R_PPC_NONE 0
@@ -237,21 +238,6 @@ do { \

#endif

-/*
- * We need to put in some extra aux table entries to tell glibc what
- * the cache block size is, so it can use the dcbz instruction safely.
- */
-#define AT_DCACHEBSIZE 19
-#define AT_ICACHEBSIZE 20
-#define AT_UCACHEBSIZE 21
-/* A special ignored type value for PPC, for glibc compatibility. */
-#define AT_IGNOREPPC 22
-
-/* The vDSO location. We have to use the same value as x86 for glibc's
- * sake :-)
- */
-#define AT_SYSINFO_EHDR 33
-
extern int dcache_bsize;
extern int icache_bsize;
extern int ucache_bsize;
--- linux/include/asm-s390/auxvec.h.auxv 2005-07-27 11:34:19.259931869 -0700
+++ linux/include/asm-s390/auxvec.h 2005-07-27 11:34:19.259931869 -0700
@@ -0,0 +1,4 @@
+#ifndef __ASMS390_AUXVEC_H
+#define __ASMS390_AUXVEC_H
+
+#endif
--- linux/include/asm-sh/auxvec.h.auxv 2005-07-27 11:34:19.260931704 -0700
+++ linux/include/asm-sh/auxvec.h 2005-07-27 11:34:19.260931704 -0700
@@ -0,0 +1,4 @@
+#ifndef __ASM_SH_AUXVEC_H
+#define __ASM_SH_AUXVEC_H
+
+#endif /* __ASM_SH_AUXVEC_H */
--- linux/include/asm-sh64/auxvec.h.auxv 2005-07-27 11:34:19.260931704 -0700
+++ linux/include/asm-sh64/auxvec.h 2005-07-27 11:34:19.260931704 -0700
@@ -0,0 +1,4 @@
+#ifndef __ASM_SH64_AUXVEC_H
+#define __ASM_SH64_AUXVEC_H
+
+#endif /* __ASM_SH64_AUXVEC_H */
--- linux/include/asm-sparc/auxvec.h.auxv 2005-07-27 11:34:19.261931540 -0700
+++ linux/include/asm-sparc/auxvec.h 2005-07-27 11:34:19.261931540 -0700
@@ -0,0 +1,4 @@
+#ifndef __ASMSPARC_AUXVEC_H
+#define __ASMSPARC_AUXVEC_H
+
+#endif /* !(__ASMSPARC_AUXVEC_H) */
--- linux/include/asm-sparc64/auxvec.h.auxv 2005-07-27 11:34:19.262931375 -0700
+++ linux/include/asm-sparc64/auxvec.h 2005-07-27 11:34:19.262931375 -0700
@@ -0,0 +1,4 @@
+#ifndef __ASM_SPARC64_AUXVEC_H
+#define __ASM_SPARC64_AUXVEC_H
+
+#endif /* !(__ASM_SPARC64_AUXVEC_H) */
--- linux/include/asm-um/auxvec.h.auxv 2005-07-27 11:34:19.262931375 -0700
+++ linux/include/asm-um/auxvec.h 2005-07-27 11:34:19.262931375 -0700
@@ -0,0 +1,4 @@
+#ifndef __UM_AUXVEC_H
+#define __UM_AUXVEC_H
+
+#endif
--- linux/include/asm-v850/auxvec.h.auxv 2005-07-27 11:34:19.263931210 -0700
+++ linux/include/asm-v850/auxvec.h 2005-07-27 11:34:19.263931210 -0700
@@ -0,0 +1,4 @@
+#ifndef __V850_AUXVEC_H__
+#define __V850_AUXVEC_H__
+
+#endif /* __V850_AUXVEC_H__ */
--- linux/include/asm-x86_64/auxvec.h.auxv 2005-07-27 11:34:19.263931210 -0700
+++ linux/include/asm-x86_64/auxvec.h 2005-07-27 11:34:19.263931210 -0700
@@ -0,0 +1,4 @@
+#ifndef __ASM_X86_64_AUXVEC_H
+#define __ASM_X86_64_AUXVEC_H
+
+#endif
--- linux/include/linux/auxvec.h.auxv 2005-07-27 11:34:19.265930880 -0700
+++ linux/include/linux/auxvec.h 2005-07-27 11:34:19.265930880 -0700
@@ -0,0 +1,31 @@
+#ifndef _LINUX_AUXVEC_H
+#define _LINUX_AUXVEC_H
+
+#include <asm/auxvec.h>
+
+/* Symbolic values for the entries in the auxiliary table
+ put on the initial stack */
+#define AT_NULL 0 /* end of vector */
+#define AT_IGNORE 1 /* entry should be ignored */
+#define AT_EXECFD 2 /* file descriptor of program */
+#define AT_PHDR 3 /* program headers for program */
+#define AT_PHENT 4 /* size of program header entry */
+#define AT_PHNUM 5 /* number of program headers */
+#define AT_PAGESZ 6 /* system page size */
+#define AT_BASE 7 /* base address of interpreter */
+#define AT_FLAGS 8 /* flags */
+#define AT_ENTRY 9 /* entry point of program */
+#define AT_NOTELF 10 /* program is not ELF */
+#define AT_UID 11 /* real uid */
+#define AT_EUID 12 /* effective uid */
+#define AT_GID 13 /* real gid */
+#define AT_EGID 14 /* effective gid */
+#define AT_PLATFORM 15 /* string identifying CPU for optimizations */
+#define AT_HWCAP 16 /* arch dependent hints at CPU capabilities */
+#define AT_CLKTCK 17 /* frequency at which times() increments */
+
+#define AT_SECURE 23 /* secure mode boolean */
+
+#define AT_VECTOR_SIZE 42 /* Size of auxiliary table. */
+
+#endif /* _LINUX_AUXVEC_H */
--- linux/include/linux/elf.h.auxv 2005-03-01 23:37:49.000000000 -0800
+++ linux/include/linux/elf.h 2005-07-27 11:34:19.266930715 -0700
@@ -2,6 +2,7 @@
#define _LINUX_ELF_H

#include <linux/types.h>
+#include <linux/auxvec.h>
#include <asm/elf.h>

#ifndef elf_read_implies_exec
@@ -158,29 +159,6 @@ typedef __s64 Elf64_Sxword;
#define ELF64_ST_BIND(x) ELF_ST_BIND(x)
#define ELF64_ST_TYPE(x) ELF_ST_TYPE(x)

-/* Symbolic values for the entries in the auxiliary table
- put on the initial stack */
-#define AT_NULL 0 /* end of vector */
-#define AT_IGNORE 1 /* entry should be ignored */
-#define AT_EXECFD 2 /* file descriptor of program */
-#define AT_PHDR 3 /* program headers for program */
-#define AT_PHENT 4 /* size of program header entry */
-#define AT_PHNUM 5 /* number of program headers */
-#define AT_PAGESZ 6 /* system page size */
-#define AT_BASE 7 /* base address of interpreter */
-#define AT_FLAGS 8 /* flags */
-#define AT_ENTRY 9 /* entry point of program */
-#define AT_NOTELF 10 /* program is not ELF */
-#define AT_UID 11 /* real uid */
-#define AT_EUID 12 /* effective uid */
-#define AT_GID 13 /* real gid */
-#define AT_EGID 14 /* effective gid */
-#define AT_PLATFORM 15 /* string identifying CPU for optimizations */
-#define AT_HWCAP 16 /* arch dependent hints at CPU capabilities */
-#define AT_CLKTCK 17 /* frequency at which times() increments */
-
-#define AT_SECURE 23 /* secure mode boolean */
-
typedef struct dynamic{
Elf32_Sword d_tag;
union{
--- linux/include/linux/sched.h.auxv 2005-07-08 11:50:09.000000000 -0700
+++ linux/include/linux/sched.h 2005-07-27 11:34:19.269930221 -0700
@@ -35,6 +35,8 @@
#include <linux/topology.h>
#include <linux/seccomp.h>

+#include <linux/auxvec.h> /* For AT_VECTOR_SIZE */
+
struct exec_domain;

/*
@@ -243,7 +245,7 @@ struct mm_struct {
mm_counter_t _rss;
mm_counter_t _anon_rss;

- unsigned long saved_auxv[42]; /* for /proc/PID/auxv */
+ unsigned long saved_auxv[AT_VECTOR_SIZE]; /* for /proc/PID/auxv */

unsigned dumpable:1;
cpumask_t cpu_vm_mask;

Next message: Kyle McMartin: "Re: [2.6 patch] schedule obsolete OSS drivers for removal"
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In reply to: Andrew Morton: "Re: define-auxiliary-vector-size-at_vector_size.patch added to -mmtree"
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