From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (bilbo.ozlabs.org [203.11.71.1]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 40v1bX5HPHzDr4d for ; Sun, 27 May 2018 23:50:48 +1000 (AEST) Received: from ozlabs.org (ozlabs.org [IPv6:2401:3900:2:1::2]) by bilbo.ozlabs.org (Postfix) with ESMTP id 40v1bX4XsZz8tG1 for ; Sun, 27 May 2018 23:50:48 +1000 (AEST) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 40v1bX0v4Vz9s02 for ; Sun, 27 May 2018 23:50:48 +1000 (AEST) Subject: Patch "powerpc/powernv: Support firmware disable of RFI flush" has been added to the 4.14-stable tree To: greg@kroah.com, gregkh@linuxfoundation.org, linuxppc-dev@ozlabs.org, mpe@ellerman.id.au, tglx@linutronix.de Cc: From: Date: Sun, 27 May 2018 15:49:52 +0200 In-Reply-To: <20180526042749.5324-4-mpe@ellerman.id.au> Message-ID: <15274289925916@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This is a note to let you know that I've just added the patch titled powerpc/powernv: Support firmware disable of RFI flush to the 4.14-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-powernv-support-firmware-disable-of-rfi-flush.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From foo@baz Sun May 27 15:47:18 CEST 2018 From: Michael Ellerman Date: Sat, 26 May 2018 14:27:29 +1000 Subject: powerpc/powernv: Support firmware disable of RFI flush To: greg@kroah.com Cc: stable@vger.kernel.org, tglx@linutronix.de, linuxppc-dev@ozlabs.org Message-ID: <20180526042749.5324-4-mpe@ellerman.id.au> From: Michael Ellerman commit eb0a2d2620ae431c543963c8c7f08f597366fc60 upstream. Some versions of firmware will have a setting that can be configured to disable the RFI flush, add support for it. Fixes: 6e032b350cd1 ("powerpc/powernv: Check device-tree for RFI flush settings") Signed-off-by: Michael Ellerman Signed-off-by: Greg Kroah-Hartman --- arch/powerpc/platforms/powernv/setup.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/arch/powerpc/platforms/powernv/setup.c +++ b/arch/powerpc/platforms/powernv/setup.c @@ -79,6 +79,10 @@ static void pnv_setup_rfi_flush(void) if (np && of_property_read_bool(np, "disabled")) enable--; + np = of_get_child_by_name(fw_features, "speculation-policy-favor-security"); + if (np && of_property_read_bool(np, "disabled")) + enable = 0; + of_node_put(np); of_node_put(fw_features); } Patches currently in stable-queue which might be from mpe@ellerman.id.au are queue-4.14/powerpc-64s-clear-pcr-on-boot.patch queue-4.14/powerpc-rfi-flush-differentiate-enabled-and-patched-flush-types.patch queue-4.14/powerpc-64s-fix-section-mismatch-warnings-from-setup_rfi_flush.patch queue-4.14/powerpc-pseries-fix-clearing-of-security-feature-flags.patch queue-4.14/powerpc-powernv-set-or-clear-security-feature-flags.patch queue-4.14/powerpc-64s-move-cpu_show_meltdown.patch queue-4.14/powerpc-rfi-flush-call-setup_rfi_flush-after-lpm-migration.patch queue-4.14/powerpc-pseries-set-or-clear-security-feature-flags.patch queue-4.14/powerpc-rfi-flush-make-it-possible-to-call-setup_rfi_flush-again.patch queue-4.14/powerpc-move-default-security-feature-flags.patch queue-4.14/powerpc-powernv-use-the-security-flags-in-pnv_setup_rfi_flush.patch queue-4.14/powerpc-add-security-feature-flags-for-spectre-meltdown.patch queue-4.14/powerpc-pseries-use-the-security-flags-in-pseries_setup_rfi_flush.patch queue-4.14/powerpc-64s-enhance-the-information-in-cpu_show_meltdown.patch queue-4.14/powerpc-64s-improve-rfi-l1-d-cache-flush-fallback.patch queue-4.14/powerpc-rfi-flush-always-enable-fallback-flush-on-pseries.patch queue-4.14/powerpc-rfi-flush-move-the-logic-to-avoid-a-redo-into-the-debugfs-code.patch queue-4.14/powerpc-pseries-restore-default-security-feature-flags-on-setup.patch queue-4.14/powerpc-pseries-add-new-h_get_cpu_characteristics-flags.patch queue-4.14/powerpc-64s-add-support-for-a-store-forwarding-barrier-at-kernel-entry-exit.patch queue-4.14/powerpc-64s-wire-up-cpu_show_spectre_v1.patch queue-4.14/powerpc-powernv-support-firmware-disable-of-rfi-flush.patch queue-4.14/powerpc-pseries-support-firmware-disable-of-rfi-flush.patch queue-4.14/powerpc-64s-wire-up-cpu_show_spectre_v2.patch