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Josh Poimboeuf d68be4c4d3 x86/speculation: Support 'mitigations=' cmdline option 
Configure x86 runtime CPU speculation bug mitigations in accordance with
the 'mitigations=' cmdline option.  This affects Meltdown, Spectre v2,
Speculative Store Bypass, and L1TF.

The default behavior is unchanged.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Jiri Kosina <jkosina@suse.cz> (on x86)
Reviewed-by: Jiri Kosina <jkosina@suse.cz>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Waiman Long <longman@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Jon Masters <jcm@redhat.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: linux-s390@vger.kernel.org
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-arch@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Tyler Hicks <tyhicks@canonical.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Steven Price <steven.price@arm.com>
Cc: Phil Auld <pauld@redhat.com>
Link: https://lkml.kernel.org/r/6616d0ae169308516cfdf5216bedd169f8a8291b.1555085500.git.jpoimboe@redhat.com
2019-04-17 21:37:28 +02:00
..
alpha alpha: fix page fault handling for r16-r18 targets 2019-02-10 20:42:23 -08:00
arc ARCv2: don't assume core 0x54 has dual issue 2019-02-21 14:53:36 -08:00
arm ARM: SoC fixes for v5.0 2019-03-02 16:43:15 -08:00
arm64 ARM: SoC fixes for v5.0 2019-03-02 16:43:15 -08:00
c6x arch: unexport asm/shmparam.h for all architectures 2019-02-01 15:46:22 -08:00
csky csky: Fixup dead loop in show_stack 2019-02-13 09:48:14 +08:00
h8300 arch: unexport asm/shmparam.h for all architectures 2019-02-01 15:46:22 -08:00
hexagon arch: unexport asm/shmparam.h for all architectures 2019-02-01 15:46:22 -08:00
ia64 ia64: remove redundant 'export AWK' 2019-01-16 23:31:18 +09:00
m68k for-linus-20190209 2019-02-09 10:26:09 -08:00
microblaze arch: unexport asm/shmparam.h for all architectures 2019-02-01 15:46:22 -08:00
mips Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-03-02 08:46:34 -08:00
nds32 nds32: remove unneeded code in arch/nds32/Makefile 2019-01-17 23:42:37 +09:00
nios2 arch: remove redundant UAPI generic-y defines 2019-01-06 10:22:15 +09:00
openrisc arch: unexport asm/shmparam.h for all architectures 2019-02-01 15:46:22 -08:00
parisc parisc: Fix ptrace syscall number modification 2019-02-21 20:10:46 +01:00
powerpc powerpc fixes for 5.0 #6 2019-02-23 11:13:50 -08:00
riscv Revert "RISC-V: Make BSS section as the last section in vmlinux.lds.S" 2019-02-11 15:24:45 -08:00
s390 KVM: s390: Fix crypto handling for nested KVM 2019-02-20 23:48:55 +01:00
sh sh: fix build error for invisible CONFIG_BUILTIN_DTB_SOURCE 2019-02-13 23:29:42 +09:00
sparc arch: remove redundant UAPI generic-y defines 2019-01-06 10:22:15 +09:00
um Merge branch 'akpm' (patches from Andrew) 2019-01-05 09:16:18 -08:00
unicore32 arch: unexport asm/shmparam.h for all architectures 2019-02-01 15:46:22 -08:00
x86 x86/speculation: Support 'mitigations=' cmdline option 2019-04-17 21:37:28 +02:00
xtensa xtensa: SMP: limit number of possible CPUs by NR_CPUS 2019-01-27 10:04:30 -08:00
.gitignore
Kconfig jump_label: move 'asm goto' support test to Kconfig 2019-01-06 09:46:51 +09:00