From nobody Wed Feb 11 05:41:52 2026 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.9]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 70AAB5FDA5; Fri, 17 May 2024 14:19:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.9 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715955600; cv=none; b=iT+oIeDCX/JO3Y4EJdEwpagjR99mDy4ltRpbYiAuxaaUDF1ZG2/ylURHVEmi0ikQ0yBwyWGd0PKh/pwwir4TBt7A9PyHn8fm/+Er6RfSNGW2qkYh/wqTdtsi+7advCVMGZiKZzp/QhhJjS9Zud9KrWIVcFoU/xISTEDzOiBIP4k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715955600; c=relaxed/simple; bh=bZilNGVw8GXYGxLxRYDja6LYOeRiibYaLxUxsni4eow=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=q6BK6r1FWMi3wNvLwpfA94GZvra13baL5yDFrDs7GBhgfNsTFsgk0ENZOS9BUupmLcYQHORfjXnjJyMwl1sV8GIxnZNynfcdnbh0+GijzPtjcJmMV9kfrw9oXJ7rsrfeIYm9LP533HFVvwpa1pVHnY/y5t9Lq1R6n+gPZokPzw4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.helo=mgamail.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=lMSBqwi4; arc=none smtp.client-ip=192.198.163.9 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.helo=mgamail.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="lMSBqwi4" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1715955599; x=1747491599; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=bZilNGVw8GXYGxLxRYDja6LYOeRiibYaLxUxsni4eow=; b=lMSBqwi4WfG6ETEkI1JZXZcqlrH6KrSSwSVl+dVwK+bXMBtqqknyK76V NIxCdZwnu2RRCPsNTp+4QRBkj2o1YyJ/z59ot7oDnJ4Immn8/J1I4AYdz ylt2X+3xE1GIyqTmZK4h066tHwJ36H3Y07TkwVO4uXHswtca7Vl4ozfTX a/9+5loPyn9IrN4J/bXPqfKtflhNqkqSLPr58BWuFwZpNHoGZ0I8EgbqE 75Tkrdb0kj/XSkjHJbevc/GngHyymhQQcW+K6M7ALl2n/jq1RjdJ1PEaU hxUa2Jh5AYR1UA0XMn4MePnF6LMoNpKuX1rgtbXE/lnU4WQzVLnEEug7I A==; X-CSE-ConnectionGUID: +XR0d0mKTuy5yGhgdzQSPw== X-CSE-MsgGUID: maSgJuqORu2llOyduAjwlw== X-IronPort-AV: E=McAfee;i="6600,9927,11075"; a="22808597" X-IronPort-AV: E=Sophos;i="6.08,167,1712646000"; d="scan'208";a="22808597" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by fmvoesa103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 May 2024 07:19:55 -0700 X-CSE-ConnectionGUID: 3AIT/8JQT1CLr++1r11kTA== X-CSE-MsgGUID: jF4VjyVnTNu8IdmSTVuKvQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,167,1712646000"; d="scan'208";a="69253346" Received: from black.fi.intel.com ([10.237.72.28]) by orviesa001.jf.intel.com with ESMTP; 17 May 2024 07:19:50 -0700 Received: by black.fi.intel.com (Postfix, from userid 1000) id A91EF9F6; Fri, 17 May 2024 17:19:49 +0300 (EEST) From: "Kirill A. Shutemov" To: Sean Christopherson , Paolo Bonzini , Dave Hansen , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, "H. Peter Anvin" , "K. Y. Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Josh Poimboeuf , Peter Zijlstra Cc: linux-coco@lists.linux.dev, linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org, "Kirill A. Shutemov" Subject: [PATCH 02/20] x86/tdx: Add macros to generate TDVMCALL wrappers Date: Fri, 17 May 2024 17:19:20 +0300 Message-ID: <20240517141938.4177174-3-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240517141938.4177174-1-kirill.shutemov@linux.intel.com> References: <20240517141938.4177174-1-kirill.shutemov@linux.intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Introduce a set of macros that allow to generate wrappers for TDVMCALL leafs. The macros uses tdvmcall_trmapoline() and provides SYSV-complaint ABI on top of it. There are three macros differentiated by number of return parameters. Signed-off-by: Kirill A. Shutemov --- arch/x86/include/asm/shared/tdx.h | 54 +++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) diff --git a/arch/x86/include/asm/shared/tdx.h b/arch/x86/include/asm/share= d/tdx.h index 89f7fcade8ae..ddf2cc4a45da 100644 --- a/arch/x86/include/asm/shared/tdx.h +++ b/arch/x86/include/asm/shared/tdx.h @@ -76,6 +76,60 @@ =20 #include =20 +#define TDVMCALL_0(reason, in_r12, in_r13, in_r14, in_r15) \ +({ \ + long __ret; \ + \ + asm( \ + "call tdvmcall_trampoline\n\t" \ + "movq %%r10, %[r10_out]\n\t" \ + : [r10_out] "=3Dr" (__ret), ASM_CALL_CONSTRAINT \ + : "a" (TDX_HYPERCALL_STANDARD), "b" (reason), \ + "D" (in_r12), "S"(in_r13), "d"(in_r14), "c" (in_r15) \ + : "r12", "r13", "r14", "r15" \ + ); \ + __ret; \ +}) + +#define TDVMCALL_1(reason, in_r12, in_r13, in_r14, in_r15, out_r11) \ +({ \ + long __ret; \ + \ + asm( \ + "call tdvmcall_trampoline\n\t" \ + "movq %%r10, %[r10_out]\n\t" \ + "movq %%r11, %[r11_out]\n\t" \ + : [r10_out] "=3Dr" (__ret), [r11_out] "=3Dr" (out_r11), \ + ASM_CALL_CONSTRAINT \ + : "a" (TDX_HYPERCALL_STANDARD), "b" (reason), \ + "D" (in_r12), "S"(in_r13), "d"(in_r14), "c" (in_r15) \ + : "r10", "r11", "r12", "r13", "r14", "r15" \ + ); \ + __ret; \ +}) + +#define TDVMCALL_4(reason, in_r12, in_r13, in_r14, in_r15, \ + out_r12, out_r13, out_r14, out_r15) \ +({ \ + long __ret; \ + \ + asm( \ + "call tdvmcall_trampoline\n\t" \ + "movq %%r10, %[r10_out]\n\t" \ + "movq %%r12, %[r12_out]\n\t" \ + "movq %%r13, %[r13_out]\n\t" \ + "movq %%r14, %[r14_out]\n\t" \ + "movq %%r15, %[r15_out]\n\t" \ + : [r10_out] "=3Dr" (__ret), ASM_CALL_CONSTRAINT, \ + [r12_out] "=3Dr" (out_r12), [r13_out] "=3Dr" (out_r13), \ + [r14_out] "=3Dr" (out_r14), [r15_out] "=3Dr" (out_r15) \ + : "a" (TDX_HYPERCALL_STANDARD), "b" (reason), \ + "D" (in_r12), "S"(in_r13), "d"(in_r14), "c" (in_r15) \ + : "r10", "r12", "r13", "r14", "r15" \ + ); \ + __ret; \ +}) + /* * Used in __tdcall*() to gather the input/output registers' values of the * TDCALL instruction when requesting services from the TDX module. This i= s a --=20 2.43.0