linux-stable.git/arch/x86/boot/cpu.c, branch linux-4.2.y Linux kernel stable tree x86: Support compiling out human-friendly processor feature names 2014-08-17T22:54:00+00:00 Josh Triplett josh@joshtriplett.org 2013-10-30T15:09:45+00:00 9def39be4e960917fcb80514ff23651f9ec97193 The table mapping CPUID bits to human-readable strings takes up a non-trivial amount of space, and only exists to support /proc/cpuinfo and a couple of kernel messages. Since programs depend on the format of /proc/cpuinfo, force inclusion of the table when building with /proc support; otherwise, support omitting that table to save space, in which case the kernel messages will print features numerically instead. In addition to saving 1408 bytes out of vmlinux, this also saves 1373 bytes out of the uncompressed setup code, which contributes directly to the size of bzImage. Signed-off-by: Josh Triplett <josh@joshtriplett.org> 
The table mapping CPUID bits to human-readable strings takes up a
non-trivial amount of space, and only exists to support /proc/cpuinfo
and a couple of kernel messages.  Since programs depend on the format of
/proc/cpuinfo, force inclusion of the table when building with /proc
support; otherwise, support omitting that table to save space, in which
case the kernel messages will print features numerically instead.

In addition to saving 1408 bytes out of vmlinux, this also saves 1373
bytes out of the uncompressed setup code, which contributes directly to
the size of bzImage.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
x86 setup: handle more than 8 CPU flag words 2008-09-16T22:09:26+00:00 H. Peter Anvin hpa@zytor.com 2008-09-16T22:09:26+00:00 97fc0555dae8f4d437c8672c14d7191962429be4 Checkin e38e05a85828dac23540cd007df5f20985388afc added a 9th CPU flag word, but didn't adjust the boot code to match. This patch adds the necessary boot code support. Note: due to a typo in an #if statement, it didn't trigger the #error this was supposed to do. Signed-off-by: H. Peter Anvin <hpa@zytor.com> 
Checkin e38e05a85828dac23540cd007df5f20985388afc added a 9th CPU flag
word, but didn't adjust the boot code to match.  This patch adds the
necessary boot code support.

Note: due to a typo in an #if statement, it didn't trigger the #error
this was supposed to do.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
x86: cleanup for setup code crashes during IST probe 2008-08-13T22:13:52+00:00 H. Peter Anvin hpa@zytor.com 2008-08-13T20:14:22+00:00 c2dcfde8274883e1f6050784dcbd34b01e824b91 Clean up the code for crashes during SpeedStep probing on older machines. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> 
Clean up the code for crashes during SpeedStep probing on older
machines.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
x86: Fix up silly i1586 boot message. 2008-05-28T17:34:12+00:00 Dave Jones davej@redhat.com 2008-05-28T16:57:13+00:00 c7d624d1ee7b77622305bd638755394e4d3f2d2f Trying to boot a 64-bit kernel on a 32bit Pentium 4 gets you an amusing message along the lines of. "you need an x86-64, but you only have an i1586" due to the P4 being family F. Munge it to be 686. Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> 
Trying to boot a 64-bit kernel on a 32bit Pentium 4 gets
you an amusing message along the lines of.
"you need an x86-64, but you only have an i1586"
due to the P4 being family F.  Munge it to be 686.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
x86 setup: print missing CPU features in cleartext 2008-02-04T15:48:00+00:00 H. Peter Anvin hpa@zytor.com 2008-02-04T15:48:00+00:00 f0be6c6a697c2fe8e2efbe98cd157bdbcff969ae Instead of obscure numbers, print the list of missing CPU features in cleartext. To conserve space, use a host program (mkcpustr.c) to produce a compact list of mandatory features only. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> 
Instead of obscure numbers, print the list of missing CPU features in
cleartext.  To conserve space, use a host program (mkcpustr.c) to
produce a compact list of mandatory features only.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
i386: move boot 2007-10-11T09:16:45+00:00 Thomas Gleixner tglx@linutronix.de 2007-10-11T09:16:45+00:00 96ae6ea0be1b902c28b3b463c27da42b41e2b63a Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> 
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>