Kirill Korotaev c1217a75ea x86: mark read_crX() asm code as volatile ...

Some gcc versions (I checked at least 4.1.1 from RHEL5 & 4.1.2 from gentoo)
can generate incorrect code with read_crX()/write_crX() functions mix up,
due to cached results of read_crX().

The small app for x8664 below compiled with -O2 demonstrates this
(i686 does the same thing):

2007-10-17 20:15:31 +02:00

..

acpi

…

asm-alpha

increase AT_VECTOR_SIZE to terminate saved_auxv properly

2007-10-17 08:43:00 -07:00

asm-arm

…

asm-arm26

…

asm-avr32

…

asm-blackfin

…

asm-cris

…

asm-frv

…

asm-generic

…

asm-h8300

…

asm-ia64

increase AT_VECTOR_SIZE to terminate saved_auxv properly

2007-10-17 08:43:00 -07:00

asm-m32r

…

asm-m68k

…

asm-m68knommu

…

asm-mips

…

asm-parisc

…

asm-powerpc

Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

2007-10-17 09:05:55 -07:00

asm-ppc

Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

2007-10-17 09:05:55 -07:00

asm-s390

…

asm-sh

increase AT_VECTOR_SIZE to terminate saved_auxv properly

2007-10-17 08:43:00 -07:00

asm-sh64

…

asm-sparc

…

asm-sparc64

…

asm-um

…

asm-v850

…

asm-x86

x86: mark read_crX() asm code as volatile

2007-10-17 20:15:31 +02:00

asm-xtensa

…

crypto

…

keys

…

linux

Merge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched

2007-10-17 09:11:18 -07:00

math-emu

…

media

…

mtd

…

net

…

pcmcia

…

rdma

…

rxrpc

…

scsi

…

sound

…

video

…

xen

…

Kbuild

…