Andy Lutomirski 426d1aff31 Revert "x86/boot: Fail the boot if !M486 and CPUID is missing" ...

This reverts commit ed68d7e9b9.

The patch wasn't quite correct -- there are non-Intel (and hence
non-486) CPUs that we support that don't have CPUID.  Since we no
longer require CPUID for sync_core(), just revert the patch.

I think the relevant CPUs are Geode and Elan, but I'm not sure.

In principle, we should try to do better at identifying CPUID-less
CPUs in early boot, but that's more complicated.

Reported-by: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Juergen Gross <jgross@suse.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Matthew Whitehead <tedheadster@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: xen-devel <Xen-devel@lists.xen.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/82acde18a108b8e353180dd6febcc2876df33f24.1481307769.git.luto@kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2016-12-19 11:54:20 +01:00

..

boot

Revert "x86/boot: Fail the boot if !M486 and CPUID is missing"

2016-12-19 11:54:20 +01:00

configs

Merge tag 'iommu-updates-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

2016-10-11 12:52:41 -07:00

crypto

Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

2016-12-14 13:31:29 -08:00

entry

Merge tag 'trace-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2016-12-15 13:49:34 -08:00

events

Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2016-12-12 14:20:14 -08:00

ia32

x86/signal: Add SA_{X32,IA32}_ABI sa_flags

2016-09-14 21:28:11 +02:00

include

x86/asm/32: Make sync_core() handle missing CPUID on all 32-bit kernels

2016-12-19 11:54:20 +01:00

kernel

x86/cpu: Probe CPUID leaf 6 even when cpuid_level == 6

2016-12-19 11:50:24 +01:00

kvm

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2016-12-13 15:47:02 -08:00

lguest

x86/fpu: Remove clts()

2016-11-01 07:47:55 +01:00

lib

Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2016-12-12 13:49:57 -08:00

math-emu

Merge branch 'x86-headers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2015-11-03 21:05:40 -08:00

mm

x86/mpx: Move bd_addr to mm_context_t

2016-12-17 12:29:56 +01:00

net

bpf: xdp: Allow head adjustment in XDP prog

2016-12-08 14:25:13 -05:00

oprofile

x86/oprofile/nmi: Convert to hotplug state machine

2016-11-22 23:34:43 +01:00

pci

Merge tag 'for-linus-4.10-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

2016-12-13 16:07:55 -08:00

platform

x86/init: Remove i8042_detect() from platform ops

2016-12-19 11:34:15 +01:00

power

Merge branch 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2016-12-18 13:59:10 -08:00

purgatory

x86/kexec: add -fno-PIE

2016-11-09 22:28:09 +01:00

ras

x86/RAS: Add TSC timestamp to the injected MCE

2016-11-08 17:10:13 +01:00

realmode

x86/build: Don't use $(LINUXINCLUDE) twice

2016-11-28 07:49:17 +01:00

tools

x86/tools: Fix gcc-7 warning in relocs.c

2016-12-19 11:50:24 +01:00

um

locking/core: Provide common cpu_relax_yield() definition

2016-11-17 08:17:36 +01:00

video

x86/video: Don't assume all FB devices are PCI devices

2016-03-15 11:08:26 +01:00

xen

Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2016-12-18 11:12:53 -08:00

.gitignore

…

Kbuild

perf/x86: Move perf_event.c ............... => x86/events/core.c

2016-02-09 10:23:49 +01:00

Kconfig

Merge tag 'platform-drivers-x86-v4.10-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86

2016-12-18 15:45:33 -08:00

Kconfig.cpu

x86/Kconfig/cpus: Fix/complete CPU type help texts

2015-10-21 11:12:56 +02:00

Kconfig.debug

Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2016-03-15 09:32:27 -07:00

Makefile

lib/raid6: Add AVX512 optimized gen_syndrome functions

2016-09-21 09:09:44 -07:00

Makefile_32.cpu

…

Makefile.um

…