linux/arch/powerpc
Josh Poimboeuf 782e69efb3 powerpc/speculation: Support 'mitigations=' cmdline option
Configure powerpc CPU runtime speculation bug mitigations in accordance
with the 'mitigations=' cmdline option.  This affects Meltdown, Spectre
v1, Spectre v2, and Speculative Store Bypass.

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/245a606e1a42a558a310220312d9b6adb9159df6.1555085500.git.jpoimboe@redhat.com
2019-04-17 21:37:29 +02:00
..
boot Kbuild updates for v4.21 2018-12-29 12:03:17 -08:00
configs powerpc/configs: Add PPC4xx_OCM to ppc40x_defconfig 2018-12-30 14:00:47 +11:00
crypto powerpc updates for 4.19 2018-08-17 11:32:50 -07:00
include powerpc/64s: Fix possible corruption on big endian due to pgd/pud_present() 2019-02-17 15:24:45 +11:00
kernel powerpc/speculation: Support 'mitigations=' cmdline option 2019-04-17 21:37:29 +02:00
kvm Merge branch 'master' into fixes 2019-01-04 22:07:47 +11:00
lib Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
math-emu
mm powerpc/radix: Fix kernel crash with mremap() 2019-01-31 20:10:15 +11:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2018-12-10 18:00:43 -08:00
oprofile Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
perf powerpc/perf: Update perf_regs structure to include MMCRA 2019-01-08 19:22:47 +11:00
platforms powerpc fixes for 5.0 #6 2019-02-23 11:13:50 -08:00
purgatory powerpc updates for 4.19 2018-08-17 11:32:50 -07:00
sysdev cross-tree: phase out dma_zalloc_coherent() 2019-01-08 07:58:37 -05:00
tools powerpc/tools/checkpatch: Ignore DT_SPLIT_BINDING_PATCH 2018-12-04 19:45:01 +11:00
xmon powerpc/xmon: fix dump_segments() 2018-12-19 18:56:32 +11:00
Kbuild powerpc: Add -Werror at arch/powerpc level 2018-10-19 00:56:17 +11:00
Kconfig Kconfig file consolidation for v4.21 2018-12-29 13:40:29 -08:00
Kconfig.debug powerpc: remove redundant 'default n' from Kconfig-s 2018-10-13 22:21:25 +11:00
Makefile powerpc updates for 4.21 2018-12-27 10:43:24 -08:00
Makefile.postlink