From nobody Mon Feb 9 11:32:14 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=pass(p=reject dis=none) header.from=citrix.com ARC-Seal: i=1; a=rsa-sha256; t=1693316666; cv=none; d=zohomail.com; s=zohoarc; b=aMKMv3aB+55rcAJpXzy5RNYWCM9s51mfvHgaeL9YH027x9J0EDL59p1YPYSPoQ4GnmjumeLljW1uuh3oI3TzBcZkOgBpJqHb/2FxsSDWBt7hEhNLxCPJJxAGGTEZr1ro8CtdGwUns6NB0YYbCsrfySd1bxzYzSRKiObEQKgKrek= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1693316666; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=8lJQrhFGvDA3R4m3Psg4weMeYgsG/DDocWzoLPw64Ak=; b=hAJ2IKVo77dIwisfLy+R/msfesSa/AdfW6nFo3RV+Kt4yWZe7eS+1M8EuoABAoZpcwRc1qWL3GerPH6w8eNDPnS+orBxSeJQjrbpUNhQoSUhV5dqPh6ofxiL5ROG4efqWtoe5O7m6UoluizEgGLtdyDIxmK4gQuuzB5wYfGcYbs= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=pass header.from= (p=reject dis=none) Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1693316666192556.2607924410065; Tue, 29 Aug 2023 06:44:26 -0700 (PDT) Received: from list by lists.xenproject.org with outflank-mailman.592240.924917 (Exim 4.92) (envelope-from ) id 1qaz0c-0004z9-7o; Tue, 29 Aug 2023 13:43:54 +0000 Received: by outflank-mailman (output) from mailman id 592240.924917; Tue, 29 Aug 2023 13:43:54 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1qaz0c-0004yu-3V; Tue, 29 Aug 2023 13:43:54 +0000 Received: by outflank-mailman (input) for mailman id 592240; Tue, 29 Aug 2023 13:43:52 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1qaz0a-0004TH-9J for xen-devel@lists.xenproject.org; Tue, 29 Aug 2023 13:43:52 +0000 Received: from esa6.hc3370-68.iphmx.com (esa6.hc3370-68.iphmx.com [216.71.155.175]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id 14bcaf1a-4672-11ee-9b0d-b553b5be7939; Tue, 29 Aug 2023 15:43:50 +0200 (CEST) X-Outflank-Mailman: Message body and most headers restored to incoming version X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 14bcaf1a-4672-11ee-9b0d-b553b5be7939 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1693316630; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=RzbPMPugAWK+qGKTZXd+6jBqguV16fL2HCkt0+KJ7U8=; b=fZ6t3Pwt7HDnjJXeX+6DKTo0LBkDKV/5FIFaXk0qIK+qk+J26gH/LuVJ UIBhUTwEkssw4ZaRYuNxnrAmaBngXQF8JgQOHn+ORIaM5DollbT5i9o4b 1rVVN6fuPmuXAerIvotZabLMGOqXC4zs+rNJehX1lu0mSrVfxDTPIkOA2 U=; Authentication-Results: esa6.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none X-SBRS: 4.0 X-MesageID: 120249945 X-Ironport-Server: esa6.hc3370-68.iphmx.com X-Remote-IP: 162.221.156.123 X-Policy: $RELAYED IronPort-Data: A9a23:3fA+K6DNW3jAEBVW/wHjw5YqxClBgxIJ4kV8jS/XYbTApDwhhjZUz 2BLCGuAMqzbYGfzeYsla9vkoB5V7MLWn4Q2QQY4rX1jcSlH+JHPbTi7wuUcHAvJd5GeExg3h yk6QoOdRCzhZiaE/n9BCpC48T8nk/nOHuGmYAL9EngZbRd+Tys8gg5Ulec8g4p56fC0GArIs t7pyyHlEAbNNwVcbCRMscpvlDs15K6p4GNC7wRnDRx2lAS2e0c9Xcp3yZ6ZdxMUcqEMdsamS uDKyq2O/2+x13/B3fv8z94X2mVTKlLjFVDmZkh+AsBOsTAbzsAG6Y4pNeJ0VKtio27hc+ada jl6ncfYpQ8BZsUgkQmGOvVSO3kW0aZuoNcrLZUj2CA6IoKvn3bEmp1T4E8K0YIw6+wvJEVzs s0iGnMOUUC9ldKt5JGpVbw57igjBJGD0II3v3hhyXfSDOo8QICFSKLPjTNa9G5u3IYUR6+YP pdHL2M1N3wsYDUWUrsTILs4kP2lmT/UdDpApUjOjaE2/3LS3Ep6172F3N/9I4bSH5kEzxrFz o7A10j6Ais3H+a+9WGMrCup1+zmzXrXVbtHQdVU8dY12QbOlwT/EiY+RVa95PW0lEO6c9ZeM FAPvDojq7Ao806mRcW7WAe3yFamlBMBX9tbE8Uh9RqAjKHT5m6xGWwsXjNHLts8u6ceRz0s0 V/PnNrvCnpsqpWaTHuc8vGfqjbaBMQOBTZcP2leF1JDuoS95thp1XojU+qPDoakhIXQPQy38 gq47ysB14sBvdUv9LekqAWvby2XmrDFSQs85wPyV22j7x9kaIPNW7FE+WQ3/t4bct/HEwDpU Gws3pHHsbtQVc3leDmlGr1lIV2/2xqS3NQwa3ZLFoJpyTmi8mXLkWt4sGAnfxcB3irplFbUj K7vVeF5vs870JiCN/Ufj2eN5yMClPOIKDgdfqqIBueim7AoHON9wAlgZFSLw0fmm1U2nKc0N P+zKJj9VixGVvs+k2HqH4/xNIPHIQhkmQvuqW3TlUz7gdJymlbIIVv6DLd+Rr9gt/7VyOkk2 91eK9GL231ivB7WO0HqHXooBQlSdxATXMmmw/G7g8bfemKK7kl9Ua6OqV7gEqQ595loehDgp SrjBhEFmQKi2xUq62yiMxheVV8mZr4nxVpTAMDmFQzAN6QLCWp30JoiSg== IronPort-HdrOrdr: A9a23:vO5RUK9ym4qTvT1n1fxuk+AcI+orL9Y04lQ7vn2ZKSY5TiX4rb HKoB1/73XJYVkqN03I9ervBEDiewK/yXcW2+ks1N6ZNWGLhILBFupfBODZsl7d8kPFl9K01c 1bAtJD4N+bNykGsS4tijPIb+rJw7O8gd+Vbf+19QYIcenzAZsQlzuQDGygYypLbTgDP7UVPr yG6PFKojKxEE5nFfhSVhE+Lo7+T8SgruOeXSI7 X-Talos-CUID: 9a23:rfIg2WMLA19Fe+5DSSM/0WopXfEfQD7e8yfuMX+jLUV7V+jA X-Talos-MUID: =?us-ascii?q?9a23=3A412/Mw4k/AwLaW7UoTg7l/24xoxE4KSUJWs3sKl?= =?us-ascii?q?dspfdMH1zEmfEoDmOF9o=3D?= X-IronPort-AV: E=Sophos;i="6.02,210,1688443200"; d="scan'208";a="120249945" From: Andrew Cooper To: Xen-devel CC: Andrew Cooper , Jan Beulich , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Wei Liu , Jinoh Kang Subject: [PATCH 2/3] x86: Introduce new debug.c for debug register infrastructure Date: Tue, 29 Aug 2023 14:43:32 +0100 Message-ID: <20230829134333.3551243-3-andrew.cooper3@citrix.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230829134333.3551243-1-andrew.cooper3@citrix.com> References: <20230829134333.3551243-1-andrew.cooper3@citrix.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @citrix.com) X-ZM-MESSAGEID: 1693316668854100001 Broken out of the subsequent patch for clarity. Add stub x86_adj_dr{6,7}_rsvd() functions which will be extended in the following patch to fix bugs, and adjust debugreg.h to compile with a more minimal set of includes. Signed-off-by: Andrew Cooper Acked-by: Jan Beulich --- CC: Jan Beulich CC: Roger Pau Monn=C3=A9 CC: Wei Liu CC: Jinoh Kang --- xen/arch/x86/Makefile | 1 + xen/arch/x86/debug.c | 19 +++++++++++++++++++ xen/arch/x86/include/asm/debugreg.h | 11 +++++++++++ 3 files changed, 31 insertions(+) create mode 100644 xen/arch/x86/debug.c diff --git a/xen/arch/x86/Makefile b/xen/arch/x86/Makefile index e642ad6c5578..f3abdf9cd111 100644 --- a/xen/arch/x86/Makefile +++ b/xen/arch/x86/Makefile @@ -24,6 +24,7 @@ obj-y +=3D cpuid.o obj-$(CONFIG_PV) +=3D compat.o obj-$(CONFIG_PV32) +=3D x86_64/compat.o obj-$(CONFIG_KEXEC) +=3D crash.o +obj-y +=3D debug.o obj-y +=3D delay.o obj-y +=3D desc.o obj-bin-y +=3D dmi_scan.init.o diff --git a/xen/arch/x86/debug.c b/xen/arch/x86/debug.c new file mode 100644 index 000000000000..9900b555d6d3 --- /dev/null +++ b/xen/arch/x86/debug.c @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 XenServer. + */ +#include + +#include + +#include + +unsigned int x86_adj_dr6_rsvd(const struct cpu_policy *p, unsigned int dr6) +{ + return dr6; +} + +unsigned int x86_adj_dr7_rsvd(const struct cpu_policy *p, unsigned int dr7) +{ + return dr7; +} diff --git a/xen/arch/x86/include/asm/debugreg.h b/xen/arch/x86/include/asm= /debugreg.h index 86aa6d714347..673b81ec5eda 100644 --- a/xen/arch/x86/include/asm/debugreg.h +++ b/xen/arch/x86/include/asm/debugreg.h @@ -77,7 +77,18 @@ asm volatile ( "mov %%db" #reg ",%0" : "=3Dr" (__val) ); \ __val; \ }) + +struct vcpu; long set_debugreg(struct vcpu *, unsigned int reg, unsigned long value); void activate_debugregs(const struct vcpu *); =20 +struct cpu_policy; + +/* + * Architecturally dr6/7 are full GPR-width, but only the bottom 32 bits m= ay + * legally be non-zero. We avoid avoid storing the upper bits when possib= le. + */ +unsigned int x86_adj_dr6_rsvd(const struct cpu_policy *p, unsigned int dr6= ); +unsigned int x86_adj_dr7_rsvd(const struct cpu_policy *p, unsigned int dr7= ); + #endif /* _X86_DEBUGREG_H */ --=20 2.30.2