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5d7244e7c9
linux/arch/x86/lib
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Jan Beulich 5d7244e7c9 x86-64: Fix memset() to support sizes of 4Gb and above 
While currently there doesn't appear to be any reachable in-tree
case where such large memory blocks may be passed to memset()
(alloc_bootmem() being the primary non-reachable one, as it gets
called with suitably large sizes in FLATMEM configurations), we
have recently hit the problem a second time in our Xen kernels.

Rather than working around it a second time, prevent others from
falling into the same trap by fixing this long standing
limitation.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/4F05D992020000780006AA09@nat28.tlf.novell.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2012-01-26 11:50:04 +01:00
..
.gitignore x86: Gitignore: arch/x86/lib/inat-tables.c 2009-11-04 13:11:28 +01:00
atomic64_32.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
atomic64_386_32.S x86: Use {push,pop}_cfi in more places 2011-02-28 18:06:22 +01:00
atomic64_cx8_32.S x86: Use {push,pop}_cfi in more places 2011-02-28 18:06:22 +01:00
cache-smp.c x86, lib: Add wbinvd smp helpers 2010-01-22 16:05:42 -08:00
checksum_32.S x86: Use {push,pop}_cfi in more places 2011-02-28 18:06:22 +01:00
clear_page_64.S x86, mem: clear_page_64.S: Support clear_page() with enhanced REP MOVSB/STOSB 2011-05-17 15:40:27 -07:00
cmpxchg8b_emu.S x86: Provide an alternative() based cmpxchg64() 2009-09-30 22:55:59 +02:00
cmpxchg16b_emu.S percpu: Omit segment prefix in the UP case for cmpxchg_double 2011-03-27 19:25:36 -07:00
cmpxchg.c x86, asm: Merge cmpxchg_486_u64() and cmpxchg8b_emu() 2010-07-28 17:05:11 -07:00
copy_page_64.S x86-64: Slightly shorten copy_page() 2012-01-06 12:25:37 +01:00
copy_user_64.S x86, 64-bit: Fix copy_[to/from]_user() checks for the userspace address limit 2011-05-18 12:49:00 +02:00
copy_user_nocache_64.S x86: wrong register was used in align macro 2008-07-30 10:10:39 -07:00
csum-copy_64.S x86: Clean up csum-copy_64.S a bit 2011-03-18 10:44:26 +01:00
csum-partial_64.c x86: Fix common misspellings 2011-03-18 10:39:30 +01:00
csum-wrappers_64.c
delay.c x86: udelay: Use this_cpu_read to avoid address calculation 2011-01-04 06:08:55 +01:00
getuser.S x86: use _types.h headers in asm where available 2009-02-13 11:35:01 -08:00
inat.c x86: AVX instruction set decoder support 2009-10-29 08:47:46 +01:00
insn.c x86: Fix insn decoder for longer instruction 2011-10-10 09:05:51 +02:00
iomap_copy_64.S
Makefile Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2011-07-22 17:02:24 -07:00
memcpy_32.c x86, mem: Optimize memmove for small size and unaligned cases 2010-09-24 18:57:11 -07:00
memcpy_64.S Merge branches 'x86-apic-for-linus', 'x86-asm-for-linus' and 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2011-05-19 17:49:35 -07:00
memmove_64.S x86: Make alternative instruction pointers relative 2011-07-13 11:22:56 -07:00
memset_64.S x86-64: Fix memset() to support sizes of 4Gb and above 2012-01-26 11:50:04 +01:00
mmx_32.c x86: clean up mmx_32.c 2008-04-17 17:40:47 +02:00
msr-reg-export.c x86, msr: change msr-reg.o to obj-y, and export its symbols 2009-09-04 10:00:09 -07:00
msr-reg.S x86, msr: Fix msr-reg.S compilation with gas 2.16.1, on 32-bit too 2009-09-03 21:26:34 +02:00
msr-smp.c x86, msr: msrs_alloc/free for CONFIG_SMP=n 2009-12-16 15:36:32 -08:00
msr.c x86, msr: msrs_alloc/free for CONFIG_SMP=n 2009-12-16 15:36:32 -08:00
putuser.S x86: merge putuser asm functions. 2008-07-09 09:14:13 +02:00
rwlock.S x86: Fix write lock scalability 64-bit issue 2011-07-21 09:03:36 +02:00
rwsem.S x86: Unify rwsem assembly implementation 2011-07-21 09:03:32 +02:00
string_32.c x86/i386: Use less assembly in strlen(), speed things up a bit 2011-12-12 18:33:42 +01:00
strstr_32.c x86: coding style fixes to arch/x86/lib/strstr_32.c 2008-08-15 16:53:24 +02:00
thunk_32.S x86: Remove unused bits from lib/thunk_*.S 2011-02-28 18:06:22 +01:00
thunk_64.S x86: Fix write lock scalability 64-bit issue 2011-07-21 09:03:36 +02:00
usercopy_32.c x86: Turn the copy_from_user check into an (optional) compile time warning 2009-10-01 11:31:04 +02:00
usercopy_64.c x86, 64-bit: Clean up user address masking 2009-06-20 15:40:00 -07:00
usercopy.c x86, perf: Make copy_from_user_nmi() a library function 2011-07-21 20:41:57 +02:00
x86-opcode-map.txt x86: Add Intel FMA instructions to x86 opcode map 2009-10-29 08:47:47 +01:00