From nobody Wed Dec 17 12:17:20 2025 Received: from mail-io1-f73.google.com (mail-io1-f73.google.com [209.85.166.73]) (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 CEA433590D0 for ; Tue, 28 Oct 2025 21:21:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.73 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761686477; cv=none; b=Egwnslzm2bYaV42dYdpfa1gNnyhXRuLA6q8NQQb/uBf4Bl1tHVYaHrQYoNFdoyBn4qirqmsxXVQ7AWVbCHMgw/+Fb/W5oIEzb2hiqVxwWA1sZXt4rfBT5ccU703lWRNtTtKqs19C4Gvqy238nMc7xT+zr0icV+HyQIU+9AM8fuA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761686477; c=relaxed/simple; bh=iSEEdrLiLmqcw9R7W8cvdfSlfMoFs/dHBaP7FgEu694=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=Z+Xdc9ckeuXzGnUsCQyo7J/mKfZmgKr7sNan3AVE5Gq3EdpbatOnhv5m1qzBekZygFIbbX7mEXH0f8Cwyi94C0Z57IWae4318IjdAZmD0C9TeGAmAma4Od+9vZSH/l9W+qu9QQ1qCr7ru9lC8Sj+mi1VdrLJuYPxUL/0oUmf9gg= 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=fu75H0Dk; arc=none smtp.client-ip=209.85.166.73 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="fu75H0Dk" Received: by mail-io1-f73.google.com with SMTP id ca18e2360f4ac-886e347d2afso683736539f.3 for ; Tue, 28 Oct 2025 14:21:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1761686475; x=1762291275; 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=9cMMlxlKXtL0VXA8L0h89s2s0Us0y8kGMwGXpa8RPm0=; b=fu75H0DkvxBHgjB4QkgYDB6nkKMb1rPkIs2AXI40H0+vzQoXYbMmDPebp0UgXzv4fh 2V2hL4+p084OUGpQy0YG5hjjYXZev3D0729ri677u/SRR7mltX62BQ1I35QXi/sfDp3m NpQdq9aSIHuxcBYb0/CQaG6sLIQ16ECLkFTRP1GxTtMh7vYjExCi4f17bcLyn/Z6eBBx zhE0RC3rrZVrXS17aclhl53aAPUfwtlAbOjuJEP453MG9ZGFhkQ7uQi9nOzTOon9k7qf rW2sdGXEWtEQ7rR3JvhXTp0v7vJ4ikfyDxfX0g/pp33WFHLe8J/dFLpTPMOcVOZPiCdC EJPw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1761686475; x=1762291275; 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=9cMMlxlKXtL0VXA8L0h89s2s0Us0y8kGMwGXpa8RPm0=; b=ZL5fcQu/ty77ri3zLXjjrU2zykGMeYvZ7KSH3EBXbrJerlOWenaUg1yApj6E1CBt1D GAW9RtoN93i1GbHclx0otZT7dY/3d1+kZLFvdPe5qyeLGMkP0EcbKUvOMKURtXG77h7x rYqmCJouR/OzZ+muuFnE4lS6kMADplP3tfAsbHTmhK59kwGq7KA1K35th/otiVRYnV0G w6flgKyicvqaCyYzLm+HkZs4Hlh7A8g50mzcEHL1v1rae1zJks7Uq8ZMS4Prf0bHDqGK wIyzv787VSwr4eeAP2Qb6en2qUJUQhIM5HkKKYqKfD0tGzGDsjOo0TcDn24snT/5s9RM ftJw== X-Gm-Message-State: AOJu0YzZ3fi3IQknEvO9x7Q6Lvihbn272mKzwfFYgnmgIA5mbJ0tibr8 bZZSJ3gtPudGc8S5uw7TGkDm/RbXNcKmlP9rHjcUMRWnqDVj8JZH/OBWi2FLnTWvT0qwnuaZH2q iHg== X-Google-Smtp-Source: AGHT+IGeXWSnPReZTOd3BW/1Br2ITY0QeYz/8fcks7dNKFTMkhzfS1nQHUJfmshL3eo+QhycTnHG4IpefQ== X-Received: from iobeh6.prod.google.com ([2002:a05:6602:4a06:b0:940:d830:481e]) (user=sagis job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6602:1581:b0:93e:897a:78f with SMTP id ca18e2360f4ac-945c965df7dmr154836339f.2.1761686474855; Tue, 28 Oct 2025 14:21:14 -0700 (PDT) Date: Tue, 28 Oct 2025 21:20:47 +0000 In-Reply-To: <20251028212052.200523-1-sagis@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20251028212052.200523-1-sagis@google.com> X-Mailer: git-send-email 2.51.1.851.g4ebd6896fd-goog Message-ID: <20251028212052.200523-22-sagis@google.com> Subject: [PATCH v12 21/23] 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 | 23 +++++++++++++++++++ 3 files changed, 38 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 969338b66592..b7a518d62098 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..f9c1acd5b30c --- /dev/null +++ b/tools/testing/selftests/kvm/lib/x86/tdx/tdx.c @@ -0,0 +1,23 @@ +// 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 { + .r10 =3D TDG_VP_VMCALL, + .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 2.51.1.851.g4ebd6896fd-goog