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 X-Spam-Level: X-Spam-Status: No, score=-17.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT, USER_IN_DEF_DKIM_WL autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DC63AC2D0DB for ; Tue, 28 Jan 2020 18:49:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B75CA24681 for ; Tue, 28 Jan 2020 18:49:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="WKzYD9qR" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726784AbgA1Sty (ORCPT ); Tue, 28 Jan 2020 13:49:54 -0500 Received: from mail-pg1-f201.google.com ([209.85.215.201]:40474 "EHLO mail-pg1-f201.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726687AbgA1Stw (ORCPT ); Tue, 28 Jan 2020 13:49:52 -0500 Received: by mail-pg1-f201.google.com with SMTP id 63so8479512pge.7 for ; Tue, 28 Jan 2020 10:49:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=3z69QiWDrqEiuvPmX+boefS4xCQlVDQqcKUHkZHcYiM=; b=WKzYD9qRh241gJR37Gn3slI0Ze0ENEB50B561Azo46OjWSNnKsQSwTha+IR8iUN7A8 bIL8fU7f6KviuaQftzEamZyVxAqUTnnHC6uedeJC4aQF/6TkFDuvF+sEqqFHwmjqQfoI TymdgIColOq7seg3DKZbAHmhw5jAFVHT2lWBR1O1QVgR4imxTSma7d51+vNTPwsWA4fb YlEIvbI2hzVY5IAfh+gyqKxuXZ3bTx983VQ7LbP5xF7SPACPNJAhj8V6Bq3bI9I3rHA0 G+wMuqmht03rH27g5NqQOLr3hTXl+79EaIr4HNKT04efHrIRskPatCwoVaiqyFAzs5sr 3rFQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=3z69QiWDrqEiuvPmX+boefS4xCQlVDQqcKUHkZHcYiM=; b=plrbODl8UM0wPq64hhpjDRMrtATaGJYlLXs6sx+vLlQ4YH5/Rn66Kk+WIkkleab4nB qyi0C4TwPu556eQnNPIKZ9Rsn5NWsJwEYU/mw8EZYLNrO640/k/q+//+SbTNgQJkFC5B rNeFxsIIYmDjvaWoVftLMnAhsxA3YzH97ZDfcI4Q3bLEiyRGdhTIKNQDpZLrPHqyNp3s XqJKNAqsLAdUQYxtHz73NGSTxPO06AvqMjQ9g/vuX7aimXm/uELpLnLcelXZ17AdCIov GqjiHjHf5nOgZ8AD0bS5T0/5BWmECrg+fqxJjEjH0HXhoV5AkvRHwmxBeN41/ScekUEz T7Yw== X-Gm-Message-State: APjAAAXw+FvXGCmXJNifyfCfxeTQjWpvmICBU2k8K6WQH0CaN+c4NsIj gR2kO54qeBA7TzMnScaxozvDCE9jzT9sESI3JW4= X-Google-Smtp-Source: APXvYqyCCLKh4s0TkRqrwhynUzYu2+5v/oLjs7TG9/zRyQpl2gfMCAhVzqKgups6XR11XC6BZHds7SoxOgaSqO5NAfY= X-Received: by 2002:a65:64c6:: with SMTP id t6mr25413296pgv.392.1580237391528; Tue, 28 Jan 2020 10:49:51 -0800 (PST) Date: Tue, 28 Jan 2020 10:49:28 -0800 In-Reply-To: <20200128184934.77625-1-samitolvanen@google.com> Message-Id: <20200128184934.77625-6-samitolvanen@google.com> Mime-Version: 1.0 References: <20191018161033.261971-1-samitolvanen@google.com> <20200128184934.77625-1-samitolvanen@google.com> X-Mailer: git-send-email 2.25.0.341.g760bfbb309-goog Subject: [PATCH v7 05/11] arm64: reserve x18 from general allocation with SCS From: Sami Tolvanen To: Will Deacon , Catalin Marinas , Steven Rostedt , Masami Hiramatsu , Ard Biesheuvel , Mark Rutland , james.morse@arm.com Cc: Dave Martin , Kees Cook , Laura Abbott , Marc Zyngier , Nick Desaulniers , Jann Horn , Miguel Ojeda , Masahiro Yamada , clang-built-linux@googlegroups.com, kernel-hardening@lists.openwall.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Sami Tolvanen Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Reserve the x18 register from general allocation when SCS is enabled, because the compiler uses the register to store the current task's shadow stack pointer. Note that all external kernel modules must also be compiled with -ffixed-x18 if the kernel has SCS enabled. Signed-off-by: Sami Tolvanen Reviewed-by: Nick Desaulniers Reviewed-by: Kees Cook Acked-by: Will Deacon --- arch/arm64/Makefile | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index dca1a97751ab..ab26b448faa9 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -65,6 +65,10 @@ stack_protector_prepare: prepare0 include/generated/asm-offsets.h)) endif +ifeq ($(CONFIG_SHADOW_CALL_STACK), y) +KBUILD_CFLAGS += -ffixed-x18 +endif + ifeq ($(CONFIG_CPU_BIG_ENDIAN), y) KBUILD_CPPFLAGS += -mbig-endian CHECKFLAGS += -D__AARCH64EB__ -- 2.25.0.341.g760bfbb309-goog 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 X-Spam-Level: X-Spam-Status: No, score=-7.2 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_ADSP_CUSTOM_MED,DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_DBL_ABUSE_MALW,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7D029C2D0DB for ; Tue, 28 Jan 2020 18:51:40 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 571A7214AF for ; Tue, 28 Jan 2020 18:51:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="joOH6WDl"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=google.com header.i=@google.com header.b="WKzYD9qR" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 571A7214AF Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:To:From:Subject:References:Mime-Version :Message-Id:In-Reply-To:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=V+kfRBBZYO6vw7B3CSDCPsf2DCI4Lc8+XJUJ7fEmgCA=; b=joOH6WDlfC5Cv6 rJr/CrphqSPMKqycYNWOjFx9IztiJC6chEIGE1AdWcOrDmpOhd+NDYG77BJY0Saj3lP0d59TJb8TX 348BmrP8T0B4jpnodoo6evYVu0ppY8J0qunlrHbtk924e3oxZUVETxqrDlT5IkaQBnUTYO8iE2jOS 7KLsilVzMdRfhSVEUlPYpQ85pN9m8WXGte6FLWSb9CY23qo3rvfu/t3Jbr5AYLEJEzZMb7yZB8Hkk Ir+f2GRNCe8AW0xtsLziR+mWIBWZ3wfrvZmgRUOuS23ybjF+vRroHJNl3nDjEvkfiEOEK2PGP5mvy FFMNhW5LjO5G4sQtNGZg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iwVxV-0001r4-Q0; Tue, 28 Jan 2020 18:51:33 +0000 Received: from mail-pj1-x1049.google.com ([2607:f8b0:4864:20::1049]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iwVvt-0007ny-NO for linux-arm-kernel@lists.infradead.org; Tue, 28 Jan 2020 18:49:55 +0000 Received: by mail-pj1-x1049.google.com with SMTP id ds13so2034671pjb.6 for ; Tue, 28 Jan 2020 10:49:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=3z69QiWDrqEiuvPmX+boefS4xCQlVDQqcKUHkZHcYiM=; b=WKzYD9qRh241gJR37Gn3slI0Ze0ENEB50B561Azo46OjWSNnKsQSwTha+IR8iUN7A8 bIL8fU7f6KviuaQftzEamZyVxAqUTnnHC6uedeJC4aQF/6TkFDuvF+sEqqFHwmjqQfoI TymdgIColOq7seg3DKZbAHmhw5jAFVHT2lWBR1O1QVgR4imxTSma7d51+vNTPwsWA4fb YlEIvbI2hzVY5IAfh+gyqKxuXZ3bTx983VQ7LbP5xF7SPACPNJAhj8V6Bq3bI9I3rHA0 G+wMuqmht03rH27g5NqQOLr3hTXl+79EaIr4HNKT04efHrIRskPatCwoVaiqyFAzs5sr 3rFQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=3z69QiWDrqEiuvPmX+boefS4xCQlVDQqcKUHkZHcYiM=; b=HXs1Ak09QfhpCJ5nGkPmHPyvbBdO+vep55WYAjiWunAnUdz+4Y/t1ufzmMxpn839SH AIkAzsIBwias8EogwuPXm14FMx8K4o2yMOqJiOrk+ZQ+Z2KPKkgDRg9YD6iOoVXFavW3 BuqE/6vFnTHdyClVApVi0Zd6AvhgoxCgyITCvy0ShjS9CRJHyEbpHLIDkrHmxf/UiKwr 68kZaOF8nmkb/71oc5IqUGSiC4khxSYFgEV14CLBLp362oC+58OAj/zL4cYwpaNuwArM UWTc0LH8VwQO2di96udcccsAnzQTN3d2ZVzHoywnJRXYKY9q4YMNGmHV1wYOCSVWkcG3 5aOw== X-Gm-Message-State: APjAAAWz7Q5SgcwC2ljmBWsNMqiMV7ist0P5u6ajcHjzjECRzjahxEzQ NNIsa4zuUAd0qN6+T0Iy0NSwV5V2bY3tXW20NP0= X-Google-Smtp-Source: APXvYqyCCLKh4s0TkRqrwhynUzYu2+5v/oLjs7TG9/zRyQpl2gfMCAhVzqKgups6XR11XC6BZHds7SoxOgaSqO5NAfY= X-Received: by 2002:a65:64c6:: with SMTP id t6mr25413296pgv.392.1580237391528; Tue, 28 Jan 2020 10:49:51 -0800 (PST) Date: Tue, 28 Jan 2020 10:49:28 -0800 In-Reply-To: <20200128184934.77625-1-samitolvanen@google.com> Message-Id: <20200128184934.77625-6-samitolvanen@google.com> Mime-Version: 1.0 References: <20191018161033.261971-1-samitolvanen@google.com> <20200128184934.77625-1-samitolvanen@google.com> X-Mailer: git-send-email 2.25.0.341.g760bfbb309-goog Subject: [PATCH v7 05/11] arm64: reserve x18 from general allocation with SCS From: Sami Tolvanen To: Will Deacon , Catalin Marinas , Steven Rostedt , Masami Hiramatsu , Ard Biesheuvel , Mark Rutland , james.morse@arm.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200128_104953_796417_39003EB9 X-CRM114-Status: UNSURE ( 8.88 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kees Cook , Jann Horn , Masahiro Yamada , Marc Zyngier , kernel-hardening@lists.openwall.com, Nick Desaulniers , linux-kernel@vger.kernel.org, Miguel Ojeda , clang-built-linux@googlegroups.com, Sami Tolvanen , Laura Abbott , Dave Martin , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Reserve the x18 register from general allocation when SCS is enabled, because the compiler uses the register to store the current task's shadow stack pointer. Note that all external kernel modules must also be compiled with -ffixed-x18 if the kernel has SCS enabled. Signed-off-by: Sami Tolvanen Reviewed-by: Nick Desaulniers Reviewed-by: Kees Cook Acked-by: Will Deacon --- arch/arm64/Makefile | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index dca1a97751ab..ab26b448faa9 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -65,6 +65,10 @@ stack_protector_prepare: prepare0 include/generated/asm-offsets.h)) endif +ifeq ($(CONFIG_SHADOW_CALL_STACK), y) +KBUILD_CFLAGS += -ffixed-x18 +endif + ifeq ($(CONFIG_CPU_BIG_ENDIAN), y) KBUILD_CPPFLAGS += -mbig-endian CHECKFLAGS += -D__AARCH64EB__ -- 2.25.0.341.g760bfbb309-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel 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 X-Spam-Level: X-Spam-Status: No, score=-17.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT, USER_IN_DEF_DKIM_WL autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1D33CC2D0DB for ; Tue, 28 Jan 2020 18:50:42 +0000 (UTC) Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.kernel.org (Postfix) with SMTP id 6F00F207FD for ; Tue, 28 Jan 2020 18:50:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="WKzYD9qR" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6F00F207FD Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernel-hardening-return-17626-kernel-hardening=archiver.kernel.org@lists.openwall.com Received: (qmail 11607 invoked by uid 550); 28 Jan 2020 18:50:03 -0000 Mailing-List: contact kernel-hardening-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Received: (qmail 11539 invoked from network); 28 Jan 2020 18:50:03 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=3z69QiWDrqEiuvPmX+boefS4xCQlVDQqcKUHkZHcYiM=; b=WKzYD9qRh241gJR37Gn3slI0Ze0ENEB50B561Azo46OjWSNnKsQSwTha+IR8iUN7A8 bIL8fU7f6KviuaQftzEamZyVxAqUTnnHC6uedeJC4aQF/6TkFDuvF+sEqqFHwmjqQfoI TymdgIColOq7seg3DKZbAHmhw5jAFVHT2lWBR1O1QVgR4imxTSma7d51+vNTPwsWA4fb YlEIvbI2hzVY5IAfh+gyqKxuXZ3bTx983VQ7LbP5xF7SPACPNJAhj8V6Bq3bI9I3rHA0 G+wMuqmht03rH27g5NqQOLr3hTXl+79EaIr4HNKT04efHrIRskPatCwoVaiqyFAzs5sr 3rFQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=3z69QiWDrqEiuvPmX+boefS4xCQlVDQqcKUHkZHcYiM=; b=CrG918aOWgWJFPbwdoyOoq51sRDEaKuF70L1fR5Vc+0NdMlI4YJ9+nHaGLQ/2Ec9Ro vjZRelFIPN8SyDYQbyCru6edZ9cK1X/lw/uv46xgjp2wAH89cQ21V0XcF2l0lDHJblh8 mumoP2MOhE0oTDaKKru2MPrRlD8Bg+AqYNYJncNraSNi6UqauQzhrIwXLLlhUEynBTXB 4MWP6pLvqvjfHUTMnN0E8kUhtfRj+v3yMlADbXyZ6IfNhtFdXUO2qsM1nrLrTuJpkPns qXa0R1MF4wkR5WwB2bfKFhdLeGtl9jRYQ1Wyci0W5yhi2PAbz6JvggDYHI2IWBxITf8U SguQ== X-Gm-Message-State: APjAAAXWBzriaPeyUe26IFHL/2shWn/Mu7Nnn2pp5WUIPLX8aD7YdUIE gjV4DEzMIJBqoj2eTexEi9bHqv/LnjxxdrRolYY= X-Google-Smtp-Source: APXvYqyCCLKh4s0TkRqrwhynUzYu2+5v/oLjs7TG9/zRyQpl2gfMCAhVzqKgups6XR11XC6BZHds7SoxOgaSqO5NAfY= X-Received: by 2002:a65:64c6:: with SMTP id t6mr25413296pgv.392.1580237391528; Tue, 28 Jan 2020 10:49:51 -0800 (PST) Date: Tue, 28 Jan 2020 10:49:28 -0800 In-Reply-To: <20200128184934.77625-1-samitolvanen@google.com> Message-Id: <20200128184934.77625-6-samitolvanen@google.com> Mime-Version: 1.0 References: <20191018161033.261971-1-samitolvanen@google.com> <20200128184934.77625-1-samitolvanen@google.com> X-Mailer: git-send-email 2.25.0.341.g760bfbb309-goog Subject: [PATCH v7 05/11] arm64: reserve x18 from general allocation with SCS From: Sami Tolvanen To: Will Deacon , Catalin Marinas , Steven Rostedt , Masami Hiramatsu , Ard Biesheuvel , Mark Rutland , james.morse@arm.com Cc: Dave Martin , Kees Cook , Laura Abbott , Marc Zyngier , Nick Desaulniers , Jann Horn , Miguel Ojeda , Masahiro Yamada , clang-built-linux@googlegroups.com, kernel-hardening@lists.openwall.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Sami Tolvanen Content-Type: text/plain; charset="UTF-8" Reserve the x18 register from general allocation when SCS is enabled, because the compiler uses the register to store the current task's shadow stack pointer. Note that all external kernel modules must also be compiled with -ffixed-x18 if the kernel has SCS enabled. Signed-off-by: Sami Tolvanen Reviewed-by: Nick Desaulniers Reviewed-by: Kees Cook Acked-by: Will Deacon --- arch/arm64/Makefile | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index dca1a97751ab..ab26b448faa9 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -65,6 +65,10 @@ stack_protector_prepare: prepare0 include/generated/asm-offsets.h)) endif +ifeq ($(CONFIG_SHADOW_CALL_STACK), y) +KBUILD_CFLAGS += -ffixed-x18 +endif + ifeq ($(CONFIG_CPU_BIG_ENDIAN), y) KBUILD_CPPFLAGS += -mbig-endian CHECKFLAGS += -D__AARCH64EB__ -- 2.25.0.341.g760bfbb309-goog