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45e876f794
linux/arch/x86/kernel/cpu
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Andy Lutomirski 45e876f794 x86/segments/64: When loadsegment(fs, ...) fails, clear the base 
On AMD CPUs, a failed loadsegment currently may not clear the FS
base.  Fix it.

While we're at it, prevent loadsegment(gs, xyz) from even compiling
on 64-bit kernels.  It shouldn't be used.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/a084c1b93b7b1408b58d3fd0b5d6e47da8e7d7cf.1461698311.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-04-29 11:56:41 +02:00
..
mcheck Linux 4.6-rc4 2016-04-19 10:38:52 +02:00
microcode Merge branch 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-15 10:39:22 -07:00
mtrr Merge branch 'x86/mm' into x86/asm to resolve conflict and to create common base 2016-04-13 11:36:19 +02:00
.gitignore
amd.c x86/cpu: Simplify extended APIC ID detection on AMD 2016-04-13 11:37:42 +02:00
bugs_64.c x86/cpu: Convert printk(KERN_<LEVEL> ...) to pr_<level>(...) 2016-02-03 10:30:03 +01:00
bugs.c
centaur.c 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
common.c x86/segments/64: When loadsegment(fs, ...) fails, clear the base 2016-04-29 11:56:41 +02:00
cpu.h
cyrix.c x86/cpufeature: Replace cpu_has_fpu with boot_cpu_has() usage 2016-04-13 11:37:40 +02:00
hypervisor.c x86/cpu: Convert printk(KERN_<LEVEL> ...) to pr_<level>(...) 2016-02-03 10:30:03 +01:00
intel_cacheinfo.c 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
intel.c x86/cpufeature: Replace cpu_has_apic with boot_cpu_has() usage 2016-04-13 11:37:41 +02:00
Makefile kernel: add kcov code coverage 2016-03-22 15:36:02 -07:00
match.c x86/cpufeature: Carve out X86_FEATURE_* 2016-01-30 11:22:17 +01:00
mkcapflags.sh x86/cpufeature: Carve out X86_FEATURE_* 2016-01-30 11:22:17 +01:00
mshyperv.c x86/hyperv: Avoid reporting bogus NMI status for Gen2 instances 2016-04-16 11:18:21 +02:00
perfctr-watchdog.c
powerflags.c x86/cpu: Add advanced power management bits 2016-03-29 11:12:11 +02:00
proc.c
rdrand.c x86/cpu: Convert printk(KERN_<LEVEL> ...) to pr_<level>(...) 2016-02-03 10:30:03 +01:00
scattered.c x86/cpufeature: Move some of the scattered feature bits to x86_capability 2015-12-19 11:49:53 +01:00
topology.c x86/cpu: Convert printk(KERN_<LEVEL> ...) to pr_<level>(...) 2016-02-03 10:30:03 +01:00
transmeta.c 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
umc.c
vmware.c x86/cpufeature: Remove cpu_has_hypervisor 2016-03-31 13:35:07 +02:00