linux/arch
H. Peter Anvin b015124e56 [x86 setup] Volatilize asm() statements
asm() statements need to be volatile when:

a. They have side effects (other than value returned).
b. When the value returned can vary over time.
c. When they have ordering constraints that cannot be expressed to gcc.

In particular, the keyboard and timer reads were violating constraint (b),
which resulted in the keyboard/timeout poll getting
loop-invariant-removed when compiling with gcc 4.2.0.

Thanks to an anonymous bug reporter for pointing this out.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2007-08-23 13:03:25 -07:00
..
alpha alpha: -Werror fixes for sys_titan.c 2007-08-11 15:47:42 -07:00
arm [ARM] 4549/1: KS8695: Fix build errors 2007-08-14 17:23:55 +01:00
avr32 [AVR32] Wire up i2c-gpio on the ATNGW100 board 2007-08-15 16:36:55 +02:00
blackfin Blackfin arch: after removing fs.h from mm.h, fix the broken on Blackfin arch 2007-08-11 15:47:39 -07:00
cris ide: fix hidden dependencies on CONFIG_IDE_GENERIC 2007-08-20 22:42:54 +02:00
frv FRV: connect up fallocate 2007-08-11 15:47:40 -07:00
h8300 h8300: missing include 2007-08-22 19:52:44 -07:00
i386 [x86 setup] Volatilize asm() statements 2007-08-23 13:03:25 -07:00
ia64 [IA64] Enable early console for Ski simulator 2007-08-17 13:44:15 -07:00
m32r m32r: build fix for removing fs.h from mm.h 2007-07-30 10:52:10 -07:00
m68k m68k: Dont include RODATA into text segment 2007-08-22 19:52:45 -07:00
m68knommu m68knommu: get rid of duplicate include 2007-07-31 15:39:40 -07:00
mips [MIPS] Add smp_call_function_single() 2007-07-31 21:35:37 +01:00
parisc Remove fs.h from mm.h 2007-07-29 17:09:29 -07:00
powerpc [POWERPC] Fix PCI Device ID for MPC8544/8533 processors 2007-08-21 19:15:31 -05:00
ppc [POWERPC] Fix small race in 44x tlbie function 2007-08-15 15:12:50 +10:00
s390 [S390] kprobes: fix instruction length calculation 2007-08-22 13:51:49 +02:00
sh sh: remove extraneous ; on scif_sercon_putc wait loop 2007-08-17 01:25:34 +09:00
sh64 sh64: arch/sh64/kernel/setup.c: duplicate include removal. 2007-08-12 12:18:54 +09:00
sparc [SPARC32]: Revert f642b26380. 2007-08-20 23:40:01 -07:00
sparc64 [SPARC64]: SMP trampoline needs to avoid %tick_cmpr on sun4v too. 2007-08-16 01:56:00 -07:00
um uml: fix previous request size limit fix 2007-08-22 19:52:46 -07:00
v850 PTRACE_POKEDATA consolidation 2007-07-17 10:23:03 -07:00
x86_64 x86_64: Check for .cfi_rel_offset in CFI probe 2007-08-18 10:25:25 -07:00
xtensa Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild 2007-07-19 14:28:19 -07:00