From nobody Tue Feb 10 02:49:00 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1493106993320568.6651922332512; Tue, 25 Apr 2017 00:56:33 -0700 (PDT) Received: from localhost ([::1]:47566 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d2vKq-0001Uh-1F for importer@patchew.org; Tue, 25 Apr 2017 03:56:32 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33746) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d2vIf-0008FB-Aq for qemu-devel@nongnu.org; Tue, 25 Apr 2017 03:54:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d2vIe-0000iw-IW for qemu-devel@nongnu.org; Tue, 25 Apr 2017 03:54:17 -0400 Received: from out4-smtp.messagingengine.com ([66.111.4.28]:41085) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1d2vIZ-0000fC-Mu; Tue, 25 Apr 2017 03:54:12 -0400 Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailout.nyi.internal (Postfix) with ESMTP id F0E2121F25; Tue, 25 Apr 2017 03:54:03 -0400 (EDT) Received: from frontend1 ([10.202.2.160]) by compute4.internal (MEProxy); Tue, 25 Apr 2017 03:54:03 -0400 Received: from localhost (flamenco.cs.columbia.edu [128.59.20.216]) by mail.messagingengine.com (Postfix) with ESMTPA id B00027E7A2; Tue, 25 Apr 2017 03:54:03 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=braap.org; h=cc :date:from:in-reply-to:message-id:references:subject:to :x-me-sender:x-me-sender:x-sasl-enc:x-sasl-enc; s=mesmtp; bh=api 3sjPXzyP7+xh0OFgAe0egor5sVk45hJf7nyGr+ps=; b=aIL2rF1NBFWim09DZYb dBa6W0+xBhPn4Ws2YXfEcGprFPIlrTv84zMtr9Q8HzFxhMfdAiaKEjCewGrFxh4X 0k234iCd5DYvx/xLdnfa+g7awJvbN2F4Ty9q5e8rhh4aaxiy1dEj1woqvuDt5o/C kVJiqaZ9re/WBo0GE12NYiSM= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:date:from:in-reply-to:message-id :references:subject:to:x-me-sender:x-me-sender:x-sasl-enc :x-sasl-enc; s=fm1; bh=api3sjPXzyP7+xh0OFgAe0egor5sVk45hJf7nyGr+ ps=; b=kFj2A0hoeOMVbPFOIKEPPFSA2x175pL5QWfN3BfkxGYU6quQEfBiVdmyD leYyxquxAOH8YbgS69Fc62Iw40OzW6TMkrmw+b8UeTgzCyJoNPkUzWkkWKMFDKLp 3NWx4HQ3JRyTAY4+A5YdamrQ7N8q4ZDM2RhmQ6M+y/cg60oDodWsLDwAzHOlYm8E I/6wFCNr7cJhn3o66A2phJAycFRdV9EEcd13vXe3V3IveoRPMdE+joy8L+boCQI1 0Jw08eL5rOGBxcSaQgEa1RgbDHxVWKqJ2Otdyn+wXn+97MTGGDE5LbnTogsEmE9z +8p23VCukUF3jPpQ39qk2iFxLy6EQ== X-ME-Sender: X-Sasl-enc: ePeDty/F/chD3XayqVefcqyZu2z64H3tf2JaKdSpLtfA 1493106843 From: "Emilio G. Cota" To: qemu-devel@nongnu.org Date: Tue, 25 Apr 2017 03:53:49 -0400 Message-Id: <1493106839-10438-4-git-send-email-cota@braap.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1493106839-10438-1-git-send-email-cota@braap.org> References: <1493106839-10438-1-git-send-email-cota@braap.org> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.111.4.28 Subject: [Qemu-devel] [PATCH v2 03/13] tcg: enforce 64-byte alignment of TCGContext X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , Eduardo Habkost , Peter Crosthwaite , Stefan Weil , Alexander Graf , alex.bennee@linaro.org, qemu-arm@nongnu.org, Pranith Kumar , Paolo Bonzini , Aurelien Jarno , Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" This will allow us to prevent cache line false sharing in TCGContext. Before: $ objdump -t build/x86_64-linux-user/qemu-x86_64 | grep tcg_ctx 00000000003ea820 g O .bss 00000000000152d8 tcg_ctx After: $ objdump -t build/x86_64-linux-user/qemu-x86_64 | grep tcg_ctx 00000000003ea880 g O .bss 0000000000015300 tcg_ctx Signed-off-by: Emilio G. Cota --- tcg/tcg.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tcg/tcg.h b/tcg/tcg.h index 6c216bb..5fdbfe3 100644 --- a/tcg/tcg.h +++ b/tcg/tcg.h @@ -727,7 +727,7 @@ struct TCGContext { =20 uint16_t gen_insn_end_off[TCG_MAX_INSNS]; target_ulong gen_insn_data[TCG_MAX_INSNS][TARGET_INSN_START_WORDS]; -}; +} QEMU_ALIGNED(64); =20 extern TCGContext tcg_ctx; extern bool parallel_cpus; --=20 2.7.4