Linus Torvalds 8ccb3dcd1f x86: Fix booting with "no387 nofxsr" ...

Jesper Juhl reported that testing the software math-emulation by forcing
"no387" doesn't work on modern CPU's.

The reason was two-fold:
 - you also need to pass in "nofxsr" to make sure that we not only don't
   touch the old i387 legacy hardware, it also needs to disable the
   modern XMM/FXSR sequences
 - "nofxsr" didn't actually clear the capability bits immediately,
   leaving the early boot sequence still using FXSR until we got to
   the identify_cpu() stage.

This fixes the "nofxsr" flag to take effect immediately on the boot CPU.

Debugging by Randy Dunlap

Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: Jesper Juhl <jesper.juhl@gmail.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2006-10-03 09:47:14 -07:00

..

alpha

[PATCH] VFS: Make filldir_t and struct kstat deal in 64-bit inode numbers

2006-10-03 08:03:40 -07:00

arm

Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm

2006-10-03 09:14:00 -07:00

arm26

[PATCH] rename the provided execve functions to kernel_execve

2006-10-02 07:57:23 -07:00

avr32

[PATCH] AVR32: Implement kernel_execve

2006-10-02 07:57:24 -07:00

cris

[PATCH] namespaces: utsname: use init_utsname when appropriate

2006-10-02 07:57:21 -07:00

frv

Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-serial

2006-10-03 09:13:29 -07:00

h8300

[PATCH] provide kernel_execve on all architectures

2006-10-02 07:57:23 -07:00

i386

x86: Fix booting with "no387 nofxsr"

2006-10-03 09:47:14 -07:00

ia64

Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-serial

2006-10-03 09:13:29 -07:00

m32r

[PATCH] provide kernel_execve on all architectures

2006-10-02 07:57:23 -07:00

m68k

[PATCH] provide kernel_execve on all architectures

2006-10-02 07:57:23 -07:00

m68knommu

[PATCH] provide kernel_execve on all architectures

2006-10-02 07:57:23 -07:00

mips

Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-serial

2006-10-03 09:13:29 -07:00

parisc

[PATCH] VFS: Make filldir_t and struct kstat deal in 64-bit inode numbers

2006-10-03 08:03:40 -07:00

powerpc

Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

2006-10-03 08:52:26 -07:00

ppc

Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

2006-10-03 08:52:26 -07:00

s390

[PATCH] VFS: Make filldir_t and struct kstat deal in 64-bit inode numbers

2006-10-03 08:03:40 -07:00

sh

sh: Kill off remaining config.h references.

2006-10-03 13:19:02 +09:00

sh64

sh64: Update cayman defconfig.

2006-10-03 13:31:43 +09:00

sparc

[PATCH] VFS: Make filldir_t and struct kstat deal in 64-bit inode numbers

2006-10-03 08:03:40 -07:00

sparc64

Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6

2006-10-03 08:53:26 -07:00

um

[PATCH] Remove the use of _syscallX macros in UML

2006-10-02 07:57:23 -07:00

v850

[PATCH] provide kernel_execve on all architectures

2006-10-02 07:57:23 -07:00

x86_64

[PATCH] VFS: Make filldir_t and struct kstat deal in 64-bit inode numbers

2006-10-03 08:03:40 -07:00

xtensa

[PATCH] provide kernel_execve on all architectures

2006-10-02 07:57:23 -07:00