From nobody Sat Oct 4 03:01:37 2025 Received: from mail-pg1-f202.google.com (mail-pg1-f202.google.com [209.85.215.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 587542EBDDC for ; Thu, 21 Aug 2025 04:29:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755750592; cv=none; b=eznw9bNBw4RbHfvGGTjnDnPovYj19MwXHQNLTE0G4Q88ar8jqwY21hQrTswFqSl0tGOiV6AVOyrSIsygAiN+wP3n5jZy03T3GJhSZESv6DtOT4w0yH4Y+mZmqdEmCro1hY3MwiPLuzSj/1PbhjGaNkPVXF9WBethwrHo9G2AYdo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755750592; c=relaxed/simple; bh=YfCKtl1oYUHFl63/I/l0XnKZWiM4Uj8GywSB9cp0jjE=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=rAkriMbrTRE5Uu6g7lfMtw6jutfmO1oqZP8Egj9Q1MeCrPJcYT1R3zHa6/QHkOayprQKNkBfEhVfEDHEg9JYOWd9F53zgakeGchnJ0Qe9R0DzEKMaAVQLdIRhVP42nMtn6pvlLdk8JN3xv5Q7oDQ3RZDtdhtAFSMqr3zjAEcQ/o= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--sagis.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=O52GhE5q; arc=none smtp.client-ip=209.85.215.202 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--sagis.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="O52GhE5q" Received: by mail-pg1-f202.google.com with SMTP id 41be03b00d2f7-b47174bdce2so465128a12.2 for ; Wed, 20 Aug 2025 21:29:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1755750589; x=1756355389; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=17hgKbvgVoShstlAaX3KPF4mBrZKhgeiLGz5GZxS0HI=; b=O52GhE5qK4AMD2GXcRnwmN5F4wVV5RohZRhH5L1ughC0WR6OrXZddN64EFUx8ZZvoZ jmgvqnlyqsXJuQBzpXeDyKxu1AYglzOfdnuJBsfZxzDFSSgodPJaydfnPNMXc9KLcdmN 33wQLkl8Pfx3UwUNj15M+9/7RFyoRXdn3UOPNl9CZWjYUqt41+7Xik/R5Rl3bCMlvnuE NYX9S6RSgLfouq4gL81jmg5BjNu2jJTE83wPx2r+gJ6And613amn9Q3M52GGYjaXkVeZ tfaqRVepyXmH04DlPtKXZ9ZXYDQvMSs9lTEx4KbkDTx0KXePqNAEag7pSp+2kOibeobI MS0w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1755750589; x=1756355389; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=17hgKbvgVoShstlAaX3KPF4mBrZKhgeiLGz5GZxS0HI=; b=g05or8FOF/CvpN9kUQ4ObWFrGPVzm2Z1D2e2ck2fmG4WpVV0awcRkCPT8xyxv2Xtpk oIcJWX4pl387NRIZXRHVAuuKZngCsPRYN3DM0I6ldSGEOhwF2WOFHsqRp4WwAlNsgMMI cNSJENr4E134j26L/bwcSEjBqB8KE3pFHNgRMS1YT3vtmlyuAOlX950Z7+z+sJb+lTmR Xt3xXtl8WDnCMsTjSYrekJJ0x7NVvwPCc7OxhSN5cHLsQjdSJe+ZCDz4oMwAPtCZRex/ tiCKyryerzqJBYnDo7StCOKzzgHKL5acQDVIE2MGXXzS1ayJXvwOYET7KpMPq3k77X4q 6BaA== X-Gm-Message-State: AOJu0Yw+dcshflZoIIYmb6mNcVsWsgMJyO/bsXTOQzzxkxvgcuETVN+z Um00CWayfHmksM30M0aLwqC6Ocb3xfLjT9E6gcquALe5Pi/P7H8u8cGGTQc8M6dLTNsupEU1PiC WHg== X-Google-Smtp-Source: AGHT+IGF5a5kRZmxUiR0v1iGU7vvhEaAdIOjYi1z34R/ceiLYsiE+HhRHvw9xVKXOykbRjsvm8/UnJbeaw== X-Received: from pgbl17.prod.google.com ([2002:a63:5711:0:b0:b47:9d0:bf72]) (user=sagis job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a20:6a0c:b0:240:101c:4428 with SMTP id adf61e73a8af0-243308364d2mr1563120637.10.1755750589607; Wed, 20 Aug 2025 21:29:49 -0700 (PDT) Date: Wed, 20 Aug 2025 21:29:10 -0700 In-Reply-To: <20250821042915.3712925-1-sagis@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250821042915.3712925-1-sagis@google.com> X-Mailer: git-send-email 2.51.0.rc1.193.gad69d77794-goog Message-ID: <20250821042915.3712925-18-sagis@google.com> Subject: [PATCH v9 17/19] KVM: selftests: Add wrapper for TDX MMIO from guest From: Sagi Shahar To: linux-kselftest@vger.kernel.org, Paolo Bonzini , Shuah Khan , Sean Christopherson , Ackerley Tng , Ryan Afranji , Andrew Jones , Isaku Yamahata , Erdem Aktas , Rick Edgecombe , Sagi Shahar , Roger Wang , Binbin Wu , Oliver Upton , "Pratik R. Sampat" , Reinette Chatre , Ira Weiny , Chao Gao , Chenyi Qiang Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add utility function to issue MMIO TDCALL from TDX guests. Signed-off-by: Sagi Shahar --- tools/testing/selftests/kvm/Makefile.kvm | 1 + .../selftests/kvm/include/x86/tdx/tdx.h | 14 ++++++++++++ tools/testing/selftests/kvm/lib/x86/tdx/tdx.c | 22 +++++++++++++++++++ 3 files changed, 37 insertions(+) create mode 100644 tools/testing/selftests/kvm/include/x86/tdx/tdx.h create mode 100644 tools/testing/selftests/kvm/lib/x86/tdx/tdx.c diff --git a/tools/testing/selftests/kvm/Makefile.kvm b/tools/testing/selft= ests/kvm/Makefile.kvm index 1f541c0d4fe1..8d1aaebd746e 100644 --- a/tools/testing/selftests/kvm/Makefile.kvm +++ b/tools/testing/selftests/kvm/Makefile.kvm @@ -35,6 +35,7 @@ LIBKVM_x86 +=3D lib/x86/vmx.c LIBKVM_x86 +=3D lib/x86/tdx/tdx_util.c LIBKVM_x86 +=3D lib/x86/tdx/td_boot.S LIBKVM_x86 +=3D lib/x86/tdx/tdcall.S +LIBKVM_x86 +=3D lib/x86/tdx/tdx.c =20 LIBKVM_arm64 +=3D lib/arm64/gic.c LIBKVM_arm64 +=3D lib/arm64/gic_v3.c diff --git a/tools/testing/selftests/kvm/include/x86/tdx/tdx.h b/tools/test= ing/selftests/kvm/include/x86/tdx/tdx.h new file mode 100644 index 000000000000..22b096402998 --- /dev/null +++ b/tools/testing/selftests/kvm/include/x86/tdx/tdx.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +#ifndef SELFTESTS_TDX_TDX_H +#define SELFTESTS_TDX_TDX_H + +#include + +/* MMIO direction */ +#define MMIO_READ 0 +#define MMIO_WRITE 1 + +uint64_t tdg_vp_vmcall_ve_request_mmio_write(uint64_t address, uint64_t si= ze, + uint64_t data_in); + +#endif // SELFTESTS_TDX_TDX_H diff --git a/tools/testing/selftests/kvm/lib/x86/tdx/tdx.c b/tools/testing/= selftests/kvm/lib/x86/tdx/tdx.c new file mode 100644 index 000000000000..12df30ac1ceb --- /dev/null +++ b/tools/testing/selftests/kvm/lib/x86/tdx/tdx.c @@ -0,0 +1,22 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include "tdx/tdcall.h" +#include "tdx/tdx.h" + +#define TDG_VP_VMCALL 0 + +#define TDG_VP_VMCALL_VE_REQUEST_MMIO 48 + +uint64_t tdg_vp_vmcall_ve_request_mmio_write(uint64_t address, uint64_t si= ze, + uint64_t data_in) +{ + struct tdx_tdcall_args args =3D { + .r11 =3D TDG_VP_VMCALL_VE_REQUEST_MMIO, + .r12 =3D size, + .r13 =3D MMIO_WRITE, + .r14 =3D address, + .r15 =3D data_in, + }; + + return __tdx_tdcall(&args, 0); +} --=20 2.51.0.rc1.193.gad69d77794-goog