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4b3f686d4a
android_kernel_xiaomi_sm8350/arch/i386/kernel
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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
..
acpi [PATCH] x86: Allow disabling early pci scans with pci=noearly or disallowing conf1 2006-09-26 10:52:41 +02:00
cpu x86: Fix booting with "no387 nofxsr" 2006-10-03 09:47:14 -07:00
.gitignore [PATCH] x86: gitignore some autogenerated files for i386 2006-02-14 16:09:35 -08:00
alternative.c [PATCH] lockdep: x86 smp alternatives workaround 2006-07-03 15:27:04 -07:00
apic.c [PATCH] i386: Make enable_local_apic static 2006-09-26 10:52:35 +02:00
apm.c [PATCH] kthread: convert arch/i386/kernel/apm.c 2006-09-29 09:18:12 -07:00
asm-offsets.c [PATCH] vdso: randomize the i386 vDSO by moving it into a vma 2006-06-27 17:32:38 -07:00
bootflag.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
cpuid.c [PATCH] Fix modular cpuid.ko 2006-07-03 21:25:20 -07:00
crash_dump.c [PATCH] kdump: read previous kernel's memory 2006-01-10 08:01:28 -08:00
crash.c [PATCH] stack overflow safe kdump: safe smp_send_nmi_allbutself() 2006-10-01 00:39:31 -07:00
doublefault.c [PATCH] i386: cpu_relax() in crash.c and doublefault.c 2006-06-25 10:00:55 -07:00
early_printk.c
efi_stub.S [PATCH] x86: remove unused include from efi_stub.S 2006-09-26 08:48:56 -07:00
efi.c [PATCH] efi: add lock annotations for efi_call_phys_prelog and efi_call_phys_epilog 2006-09-29 09:18:07 -07:00
entry.S [PATCH] i386/x86-64: Work around gcc bug with noreturn functions in unwinder 2006-09-26 10:52:41 +02:00
head.S [PATCH] i386: Do better early exception handlers 2006-09-26 10:52:39 +02:00
hpet.c [PATCH] Fix faulty HPET clocksource usage (fix for bug #7062) 2006-09-01 11:39:08 -07:00
i386_ksyms.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
i387.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
i8237.c [PATCH] mmc (mainly): add "or later" clause to licence statement. 2006-10-01 00:39:23 -07:00
i8253.c [PATCH] time: fix time going backward w/ clock=pit 2006-06-26 09:58:21 -07:00
i8259.c [PATCH] x86: - restore i8259A eoi status on resume 2006-09-26 10:52:41 +02:00
init_task.c [PATCH] nsproxy: move init_nsproxy into kernel/nsproxy.c 2006-10-02 07:57:20 -07:00
io_apic.c [PATCH] i386: Replace i386 open-coded cmdline parsing with 2006-09-26 10:52:32 +02:00
ioport.c [PATCH] i386: use thread_info flags for debug regs and IO bitmaps 2006-07-09 18:47:12 -07:00
irq.c [PATCH] i386: Fix stack switching in do_IRQ 2006-08-30 16:05:16 -07:00
kprobes.c [PATCH] kretprobe spinlock deadlock patch 2006-10-02 07:57:16 -07:00
ldt.c
machine_kexec.c [PATCH] i386: Avoid overwriting the current pgd (V4, i386) 2006-09-26 10:52:38 +02:00
Makefile [PATCH] i386: Do stacktracer conversion too 2006-09-26 10:52:34 +02:00
mca.c [PATCH] i386: Disallow kprobes on NMI handlers 2006-09-26 10:52:36 +02:00
microcode.c [PATCH] x86 microcode: don't check the size 2006-09-27 08:26:18 -07:00
module.c [PATCH] x86: SMP alternatives 2006-03-23 07:38:04 -08:00
mpparse.c [PATCH] i386: Support physical cpu hotplug for x86_64 2006-09-26 10:52:35 +02:00
msr.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial 2006-06-30 15:39:30 -07:00
nmi.c [PATCH] Some config.h removals 2006-10-01 00:39:34 -07:00
numaq.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
pci-dma.c
process.c [PATCH] namespaces: utsname: use init_utsname when appropriate 2006-10-02 07:57:21 -07:00
ptrace.c [PATCH] i386/x86-64: rename is_at_popf(), add iret to tests and fix 2006-09-26 10:52:33 +02:00
quirks.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
reboot_fixups.c [PATCH] i386: Remove printk about reboot fixups at reboot 2006-04-09 11:53:53 -07:00
reboot.c [PATCH] x86: remove locally-defined ldt structure in favour of standard type 2006-09-26 08:48:55 -07:00
relocate_kernel.S [PATCH] i386: Avoid overwriting the current pgd (V4, i386) 2006-09-26 10:52:38 +02:00
scx200.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
setup.c [PATCH] i386: replace intermediate array-size definitions with ARRAY_SIZE() 2006-09-30 01:47:55 +02:00
sigframe.h
signal.c [PATCH] vdso: randomize the i386 vDSO by moving it into a vma 2006-06-27 17:32:38 -07:00
smp.c [PATCH] stack overflow safe kdump: safe_smp_processor_id() 2006-10-01 00:39:30 -07:00
smpboot.c [PATCH] cpumask: export node_to_cpu_mask consistently 2006-10-02 07:57:17 -07:00
srat.c [PATCH] convert i386 Summit subarch to use SRAT info for apicid_to_node calls 2006-09-29 09:18:03 -07:00
summit.c
sys_i386.c [PATCH] provide kernel_execve on all architectures 2006-10-02 07:57:23 -07:00
syscall_table.S [PATCH] x86: Add portable getcpu call 2006-09-26 10:52:28 +02:00
sysenter.c [PATCH] small fix for not releasing the mmap semaphore in i386/arch_setup_additional_pages 2006-06-28 12:05:50 -07:00
time_hpet.c [PATCH] hpet rtc emulation: add watchdog timer 2006-09-26 08:48:54 -07:00
time.c [PATCH] kill wall_jiffies 2006-10-01 00:39:27 -07:00
topology.c [PATCH] i386: clean up topology.c 2006-09-26 10:52:35 +02:00
trampoline.S
traps.c [PATCH] namespaces: utsname: use init_utsname when appropriate 2006-10-02 07:57:21 -07:00
tsc.c [PATCH] i386: mark two more functions as __init 2006-09-26 10:52:35 +02:00
vm86.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
vmlinux.lds.S [PATCH] x86: put .note.* sections into a PT_NOTE segment in vmlinux 2006-09-26 08:48:55 -07:00
vsyscall-int80.S
vsyscall-note.S
vsyscall-sigreturn.S [PATCH] Mark unwind info for signal trampolines in vDSOs 2006-03-31 12:18:52 -08:00
vsyscall-sysenter.S [PATCH] vdso: randomize the i386 vDSO by moving it into a vma 2006-06-27 17:32:38 -07:00
vsyscall.lds.S [PATCH] vDSO hash-style fix 2006-07-31 13:28:43 -07:00
vsyscall.S