From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BFBB1C3DA6F for ; Fri, 25 Aug 2023 07:02:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242645AbjHYHCM (ORCPT ); Fri, 25 Aug 2023 03:02:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58670 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241203AbjHYHCF (ORCPT ); Fri, 25 Aug 2023 03:02:05 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5CC98E6B for ; Fri, 25 Aug 2023 00:02:03 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E684562C89 for ; Fri, 25 Aug 2023 07:02:02 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DCAD8C433C8; Fri, 25 Aug 2023 07:02:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1692946922; bh=UBJmLcWAydNk4AsVk/2V5lnKNBOxuN5coNe2xiTdpmE=; h=From:To:Cc:Subject:Date:From; b=Yk3TlyDSqvvG0RtWoJYkLm56VSSKYsZM1o91S0t4//6I9SvsKa2Qn67myCwx/LtIY u49BTdOoFedPgK2hB9tS4wGJSPGNSiGqslXBVRkLnpMRXyM65Qg6pRPdZ2Jal3dpyq bQXmW/E7vC1/zbHCErg1To98Hez0Lga9+yu10MtMzRNHr7TuSFikVILkYWXN3Lgv4m SVHX2KjVTIMXlnp0rwOIY9k0CnwMZHAnC6szQFu2ujow6mOcHhDtVtkAIBUE++eCEy /NzHgl1hGWLwEJNzCTRZJNrnQKFupVg24+B7kYbBwY/fGl/XlSAiyy0BJrRMBZuXDU F8dHEv+OrBLog== From: Josh Poimboeuf To: x86@kernel.org Cc: linux-kernel@vger.kernel.org, Borislav Petkov , Peter Zijlstra , Babu Moger , Paolo Bonzini , Sean Christopherson , David.Kaplan@amd.com, Andrew Cooper , Nikolay Borisov , gregkh@linuxfoundation.org, Thomas Gleixner Subject: [PATCH v2 00/23] SRSO fixes/cleanups Date: Fri, 25 Aug 2023 00:01:31 -0700 Message-ID: X-Mailer: git-send-email 2.41.0 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org v2: - reorder everything: fixes/functionality before cleanups - split up KVM patch, add Sean's changes - add patch to support live migration - remove "default:" case for enums throughout bugs.c - various minor tweaks based on v1 discussions with Boris - add Reviewed-by's Josh Poimboeuf (23): x86/srso: Fix srso_show_state() side effect x86/srso: Set CPUID feature bits independently of bug or mitigation status x86/srso: Don't probe microcode in a guest KVM: x86: Add IBPB_BRTYPE support KVM: x86: Add SBPB support x86/srso: Fix SBPB enablement for spec_rstack_overflow=off x86/srso: Fix SBPB enablement for (possible) future fixed HW x86/srso: Print actual mitigation if requested mitigation isn't possible x86/srso: Print mitigation for retbleed IBPB case x86/srso: Fix vulnerability reporting for missing microcode x86/srso: Fix unret validation dependencies x86/alternatives: Remove faulty optimization x86/srso: Improve i-cache locality for alias mitigation x86/srso: Unexport untraining functions x86/srso: Remove 'pred_cmd' label x86/bugs: Remove default case for fully switched enums x86/srso: Move retbleed IBPB check into existing 'has_microcode' code block x86/srso: Remove redundant X86_FEATURE_ENTRY_IBPB check x86/srso: Disentangle rethunk-dependent options x86/rethunk: Use SYM_CODE_START[_LOCAL]_NOALIGN macros x86/retpoline: Remove .text..__x86.return_thunk section x86/nospec: Refactor UNTRAIN_RET[_*] x86/calldepth: Rename __x86_return_skl() to call_depth_return_thunk() Documentation/admin-guide/hw-vuln/srso.rst | 22 ++- arch/x86/include/asm/nospec-branch.h | 69 ++++----- arch/x86/include/asm/processor.h | 2 - arch/x86/kernel/alternative.c | 8 - arch/x86/kernel/cpu/amd.c | 28 ++-- arch/x86/kernel/cpu/bugs.c | 104 ++++++------- arch/x86/kernel/vmlinux.lds.S | 10 +- arch/x86/kvm/cpuid.c | 5 +- arch/x86/kvm/cpuid.h | 3 +- arch/x86/kvm/x86.c | 29 +++- arch/x86/lib/retpoline.S | 171 +++++++++++---------- include/linux/objtool.h | 3 +- scripts/Makefile.vmlinux_o | 3 +- 13 files changed, 230 insertions(+), 227 deletions(-) -- 2.41.0