From: <gregkh@linuxfoundation•org>
To: diana.craciun@nxp•com, gregkh@linuxfoundation•org,
linuxppc-dev@ozlabs•org, mpe@ellerman•id.au
Cc: stable-commits@vger•kernel.org
Subject: Patch "powerpc/fsl: Enable runtime patching if nospectre_v2 boot arg is used" has been added to the 4.4-stable tree
Date: Tue, 30 Apr 2019 12:40:29 +0200 [thread overview]
Message-ID: <1556620829170127@kroah.com> (raw)
In-Reply-To: <1556552948-24957-2-git-send-email-diana.craciun@nxp.com>
This is a note to let you know that I've just added the patch titled
powerpc/fsl: Enable runtime patching if nospectre_v2 boot arg is used
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-fsl-enable-runtime-patching-if-nospectre_v2-boot-arg-is-used.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger•kernel.org> know about it.
From foo@baz Tue 30 Apr 2019 12:38:50 PM CEST
From: Diana Craciun <diana.craciun@nxp•com>
Date: Mon, 29 Apr 2019 18:49:01 +0300
Subject: powerpc/fsl: Enable runtime patching if nospectre_v2 boot arg is used
To: stable@vger•kernel.org, gregkh@linuxfoundation•org
Cc: linuxppc-dev@ozlabs•org, mpe@ellerman•id.au, Diana Craciun <diana.craciun@nxp•com>
Message-ID: <1556552948-24957-2-git-send-email-diana.craciun@nxp•com>
From: Diana Craciun <diana.craciun@nxp•com>
commit 3bc8ea8603ae4c1e09aca8de229ad38b8091fcb3 upstream.
If the user choses not to use the mitigations, replace
the code sequence with nops.
Signed-off-by: Diana Craciun <diana.craciun@nxp•com>
Signed-off-by: Michael Ellerman <mpe@ellerman•id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation•org>
---
arch/powerpc/kernel/setup_32.c | 1 +
arch/powerpc/kernel/setup_64.c | 1 +
2 files changed, 2 insertions(+)
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -323,6 +323,7 @@ void __init setup_arch(char **cmdline_p)
if ( ppc_md.progress ) ppc_md.progress("arch: exit", 0x3eab);
setup_barrier_nospec();
+ setup_spectre_v2();
paging_init();
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -737,6 +737,7 @@ void __init setup_arch(char **cmdline_p)
ppc_md.setup_arch();
setup_barrier_nospec();
+ setup_spectre_v2();
paging_init();
Patches currently in stable-queue which might be from diana.craciun@nxp•com are
queue-4.4/powerpc-64s-add-support-for-a-store-forwarding-barrier-at-kernel-entry-exit.patch
queue-4.4/powerpc-fsl-emulate-sprn_bucsr-register.patch
queue-4.4/powerpc-64-make-stf-barrier-ppc_book3s_64-specific.patch
queue-4.4/powerpc-pseries-set-or-clear-security-feature-flags.patch
queue-4.4/powerpc-fsl-fix-spectre_v2-mitigations-reporting.patch
queue-4.4/powerpc-64s-patch-barrier_nospec-in-modules.patch
queue-4.4/powerpc-pseries-support-firmware-disable-of-rfi-flush.patch
queue-4.4/powerpc-rfi-flush-call-setup_rfi_flush-after-lpm-migration.patch
queue-4.4/powerpc-pseries-query-hypervisor-for-count-cache-flush-settings.patch
queue-4.4/powerpc-powernv-set-or-clear-security-feature-flags.patch
queue-4.4/powerpc-64s-add-support-for-software-count-cache-flush.patch
queue-4.4/powerpc64s-show-ori31-availability-in-spectre_v1-sysfs-file-not-v2.patch
queue-4.4/powerpc-fsl-flush-the-branch-predictor-at-each-kernel-entry-64bit.patch
queue-4.4/powerpc-fsl-update-spectre-v2-reporting.patch
queue-4.4/powerpc-64s-wire-up-cpu_show_spectre_v2.patch
queue-4.4/powerpc-64-make-meltdown-reporting-book3s-64-specific.patch
queue-4.4/powerpc-rfi-flush-make-it-possible-to-call-setup_rfi_flush-again.patch
queue-4.4/powerpc-64s-add-support-for-ori-barrier_nospec-patching.patch
queue-4.4/powerpc-use-barrier_nospec-in-copy_from_user.patch
queue-4.4/powerpc-64s-fix-section-mismatch-warnings-from-setup_rfi_flush.patch
queue-4.4/powerpc-fsl-sanitize-the-syscall-table-for-nxp-powerpc-32-bit-platforms.patch
queue-4.4/powerpc-avoid-code-patching-freed-init-sections.patch
queue-4.4/powerpc-fsl-add-macro-to-flush-the-branch-predictor.patch
queue-4.4/powerpc-xmon-add-rfi-flush-related-fields-to-paca-dump.patch
queue-4.4/powerpc-fsl-add-barrier_nospec-implementation-for-nxp-powerpc-book3e.patch
queue-4.4/powerpc-security-fix-spectre_v2-reporting.patch
queue-4.4/powerpc-add-security-feature-flags-for-spectre-meltdown.patch
queue-4.4/powerpc-powernv-use-the-security-flags-in-pnv_setup_rfi_flush.patch
queue-4.4/powerpc-64-disable-the-speculation-barrier-from-the-command-line.patch
queue-4.4/powerpc-fsl-fix-the-flush-of-branch-predictor.patch
queue-4.4/powerpc-pseries-use-the-security-flags-in-pseries_setup_rfi_flush.patch
queue-4.4/powerpc-64-add-config_ppc_barrier_nospec.patch
queue-4.4/powerpc-64s-move-cpu_show_meltdown.patch
queue-4.4/powerpc-fsl-enable-runtime-patching-if-nospectre_v2-boot-arg-is-used.patch
queue-4.4/powerpc-64-use-barrier_nospec-in-syscall-entry.patch
queue-4.4/powerpc-fsl-fixed-warning-orphan-section-__btb_flush_fixup.patch
queue-4.4/powerpc-fsl-add-nospectre_v2-command-line-argument.patch
queue-4.4/powerpc-64s-add-new-security-feature-flags-for-count-cache-flush.patch
queue-4.4/powerpc-fsl-add-infrastructure-to-fixup-branch-predictor-flush.patch
queue-4.4/powerpc-rfi-flush-differentiate-enabled-and-patched-flush-types.patch
queue-4.4/powerpc-64s-enhance-the-information-in-cpu_show_spectre_v1.patch
queue-4.4/powerpc-64-call-setup_barrier_nospec-from-setup_arch.patch
queue-4.4/powerpc-rfi-flush-always-enable-fallback-flush-on-pseries.patch
queue-4.4/powerpc-64s-improve-rfi-l1-d-cache-flush-fallback.patch
queue-4.4/powerpc-asm-add-a-patch_site-macro-helpers-for-patching-instructions.patch
queue-4.4/powerpc-pseries-add-new-h_get_cpu_characteristics-flags.patch
queue-4.4/powerpc-fsl-flush-the-branch-predictor-at-each-kernel-entry-32-bit.patch
queue-4.4/powerpc-64s-enable-barrier_nospec-based-on-firmware-settings.patch
queue-4.4/powerpc-powernv-support-firmware-disable-of-rfi-flush.patch
queue-4.4/powerpc-rfi-flush-move-the-logic-to-avoid-a-redo-into-the-debugfs-code.patch
queue-4.4/powerpc-fsl-flush-branch-predictor-when-entering-kvm.patch
queue-4.4/powerpc-powernv-query-firmware-for-count-cache-flush-settings.patch
queue-4.4/powerpc-64s-wire-up-cpu_show_spectre_v1.patch
queue-4.4/powerpc-64s-add-barrier_nospec.patch
queue-4.4/powerpc-64s-enhance-the-information-in-cpu_show_meltdown.patch
queue-4.4/powerpc-move-default-security-feature-flags.patch
queue-4.4/powerpc-pseries-fix-clearing-of-security-feature-flags.patch
queue-4.4/powerpc-pseries-restore-default-security-feature-flags-on-setup.patch
next prev parent reply other threads:[~2019-04-30 10:45 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-29 15:49 [PATCH stable v4.4 0/8] missing powerpc spectre backports for 4.4 Diana Craciun
2019-04-29 15:49 ` [PATCH stable v4.4 1/8] powerpc/fsl: Enable runtime patching if nospectre_v2 boot arg is used Diana Craciun
2019-04-30 10:40 ` gregkh [this message]
2019-04-29 15:49 ` [PATCH stable v4.4 2/8] powerpc/fsl: Flush branch predictor when entering KVM Diana Craciun
2019-04-30 10:40 ` Patch "powerpc/fsl: Flush branch predictor when entering KVM" has been added to the 4.4-stable tree gregkh
2019-04-29 15:49 ` [PATCH stable v4.4 3/8] powerpc/fsl: Emulate SPRN_BUCSR register Diana Craciun
2019-04-30 10:40 ` Patch "powerpc/fsl: Emulate SPRN_BUCSR register" has been added to the 4.4-stable tree gregkh
2019-04-29 15:49 ` [PATCH stable v4.4 4/8] powerpc/fsl: Flush the branch predictor at each kernel entry (32 bit) Diana Craciun
2019-04-30 10:40 ` Patch "powerpc/fsl: Flush the branch predictor at each kernel entry (32 bit)" has been added to the 4.4-stable tree gregkh
2019-04-29 15:49 ` [PATCH stable v4.4 5/8] powerpc/fsl: Sanitize the syscall table for NXP PowerPC 32 bit platforms Diana Craciun
2019-04-30 10:40 ` Patch "powerpc/fsl: Sanitize the syscall table for NXP PowerPC 32 bit platforms" has been added to the 4.4-stable tree gregkh
2019-04-29 15:49 ` [PATCH stable v4.4 6/8] powerpc/fsl: Fixed warning: orphan section `__btb_flush_fixup' Diana Craciun
2019-04-30 10:40 ` Patch "powerpc/fsl: Fixed warning: orphan section `__btb_flush_fixup'" has been added to the 4.4-stable tree gregkh
2019-04-29 15:49 ` [PATCH stable v4.4 7/8] powerpc/fsl: Add FSL_PPC_BOOK3E as supported arch for nospectre_v2 boot arg Diana Craciun
2019-04-30 10:37 ` Greg KH
2019-04-29 15:49 ` [PATCH stable v4.4 8/8] Documentation: Add nospectre_v1 parameter Diana Craciun
2019-04-30 10:38 ` Greg KH
2019-04-30 10:41 ` [PATCH stable v4.4 0/8] missing powerpc spectre backports for 4.4 Greg KH
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