From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 40v1c02FNCzDr43 for ; Sun, 27 May 2018 23:51:12 +1000 (AEST) Received: from ozlabs.org (bilbo.ozlabs.org [203.11.71.1]) by bilbo.ozlabs.org (Postfix) with ESMTP id 40v1bz6XfFz8tG1 for ; Sun, 27 May 2018 23:51:11 +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 40v1bv1BCHz9s1p for ; Sun, 27 May 2018 23:51:07 +1000 (AEST) Subject: Patch "powerpc/pseries: 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 15:49:53 +0200 In-Reply-To: <20180526042749.5324-3-mpe@ellerman.id.au> Message-ID: <152742899310426@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/pseries: 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-pseries-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 14:27:28 +1000 Subject: powerpc/pseries: Support firmware disable of RFI flush To: greg@kroah.com Cc: stable@vger.kernel.org, tglx@linutronix.de, linuxppc-dev@ozlabs.org Message-ID: <20180526042749.5324-3-mpe@ellerman.id.au> From: Michael Ellerman commit 582605a429e20ae68fd0b041b2e840af296edd08 upstream. Some versions of firmware will have a setting that can be configured to disable the RFI flush, add support for it. Fixes: 8989d56878a7 ("powerpc/pseries: Query hypervisor for RFI flush settings") Signed-off-by: Michael Ellerman Signed-off-by: Greg Kroah-Hartman --- arch/powerpc/platforms/pseries/setup.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -482,7 +482,8 @@ static void pseries_setup_rfi_flush(void if (types == L1D_FLUSH_NONE) types = L1D_FLUSH_FALLBACK; - if (!(result.behaviour & H_CPU_BEHAV_L1D_FLUSH_PR)) + if ((!(result.behaviour & H_CPU_BEHAV_L1D_FLUSH_PR)) || + (!(result.behaviour & H_CPU_BEHAV_FAVOUR_SECURITY))) enable = false; } else { /* Default to fallback if case hcall is not available */ 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