From nobody Sun Sep 14 14:53:50 2025 Received: from mail-pl1-f202.google.com (mail-pl1-f202.google.com [209.85.214.202]) (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 E9CF52857EA for ; Thu, 4 Sep 2025 06:55:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756968934; cv=none; b=Sckn+923bihIcptL9WwZgbSOOT9Qhp5JxGK5fJTviSLC79AEoyygLjQ7frq2BwNVlbLWaulKDsChzJ3mSgT1WDMvDJKXWtMSiaTGblxuEQZURmbXyrWxFRNDraPwOgTpgxlhsxqo164v22d+kWXNGloQeY6ii+r+FVUhC/bOm6M= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756968934; c=relaxed/simple; bh=hzGFMgxPgiU24vsXArlIv7U3vM7g+M9P+mccb58lX9c=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=NqKE6QFlryNaNvJAnNOAMxD81T2UcDTpOv57hyK8FOZiwGz4J5eVf3HHpzs9EPXx+QeW+CXEMZ7Ad4QXKrPrNUGVmvS1YwjjE41gfOYRyHqt0/qU7xQtdcB2xHsoFFodcJfnYUIJzPsYxpOktqAp7ePPaVoXvfJB1a85P8QeGOQ= 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=PBsuYiJP; arc=none smtp.client-ip=209.85.214.202 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="PBsuYiJP" Received: by mail-pl1-f202.google.com with SMTP id d9443c01a7336-248eec89618so9992505ad.1 for ; Wed, 03 Sep 2025 23:55:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1756968932; x=1757573732; 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=9UX1Rmgz0kZ8N5Zzn+bY2xvvNkdxwsBMWh8MtnA4+GY=; b=PBsuYiJPs/FlU73o4wvXk1Qiinadd/TO9BnIqyeZi0DEwdqtZuLYE4B4C+G6rXir4H 67c5581E9i5K0rxCWGaF93UoPDpw42INO0cjTOZxuLOt1ncVyEx0suRzS/GCHo60wpgO XXxncRe+K+migRVsLQX7aEz+0Y8b3AY9Eg/358g2t+CL68f+Mii04kbBiZpOKueP08fV MCNJI0P+KYMarxlJCkY0vb6CkCJtMBp57shgO46qFxaHprhvWyLTgqog4oTtvGR6f+pC 0q0oEM0kZCSsdAQZqULXICtf2pkWZDFrmdMWGpQZW82qko+EpyPpXo+QQjIQQCarFesq 6URw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756968932; x=1757573732; 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=9UX1Rmgz0kZ8N5Zzn+bY2xvvNkdxwsBMWh8MtnA4+GY=; b=uOSxzfoKFqFo5AMHE3TGLmIN9GBYHNpmOlk2Yiz5o4QyvZa5RN1FAok/awwfbJgzIl IOedgnTmXXl5ovMzkUXmkKcK5XYy8iABrHzegbfwbgxgkKi6otXvhD4e1dQqY8mnZW6W Dh7UY6UbfGzDOJDb5JL2qxBNG6JQYpN6O4B+OwZei4PM4dj9ohwtovaiY8E03rX+zVFW tM9SmiC3Jf3NW/bv6/gqes92jTnMPyKbEdQ3M8Xlk329xF9KxNnM8qVtA0nG9We1pZm7 wog7FIZ3gGYP2WYRJ1xZa3Z5eiVOUeYfatdxGB53D0UVwoTa7dZ6sqhVsYuJPajenv/D 9dgg== X-Gm-Message-State: AOJu0YwJaujOj9SpFnYfpcCh/bEKhwUkYj+99jDuQ9z2BNLsFC8u+pcP PDSC9L8MQE0uL2b+3QCxqd2ztQec/mnjW6OBQQuHz/g3HfAg2txzRy4BUMVhZIzvEQ2gJpaHD6C sdQ== X-Google-Smtp-Source: AGHT+IHOlHSl+cTZyC4uq0Q+4FX/lDRZCbT49C2vuUwUTLFpr3fu9v9q9yWaZlGTC0/nL8JeHBMtiOebmw== X-Received: from plat5.prod.google.com ([2002:a17:902:e1c5:b0:24a:f8cf:c06a]) (user=sagis job=prod-delivery.src-stubby-dispatcher) by 2002:a17:902:ce03:b0:248:cd0b:3454 with SMTP id d9443c01a7336-24944873445mr201786195ad.9.1756968932344; Wed, 03 Sep 2025 23:55:32 -0700 (PDT) Date: Wed, 3 Sep 2025 23:54:49 -0700 In-Reply-To: <20250904065453.639610-1-sagis@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250904065453.639610-1-sagis@google.com> X-Mailer: git-send-email 2.51.0.338.gd7d06c2dae-goog Message-ID: <20250904065453.639610-20-sagis@google.com> Subject: [PATCH v10 19/21] 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 2d4fd68984a0..1a73e08c8437 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 2.51.0.338.gd7d06c2dae-goog