From patchwork Thu Sep 14 01:55:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 13384179 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C627FEE0203 for ; Thu, 14 Sep 2023 02:00:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234793AbjINCAz (ORCPT ); Wed, 13 Sep 2023 22:00:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60478 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234231AbjINB74 (ORCPT ); Wed, 13 Sep 2023 21:59:56 -0400 Received: from mail-yw1-x1149.google.com (mail-yw1-x1149.google.com [IPv6:2607:f8b0:4864:20::1149]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EE8F03AAD for ; Wed, 13 Sep 2023 18:56:28 -0700 (PDT) Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-59bdac026f7so6806297b3.0 for ; Wed, 13 Sep 2023 18:56:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1694656588; x=1695261388; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=UjBddbZXLqwDqs/dRSKLKY4HwUhf6Ai3WxLtYL+KxyQ=; b=KboWSIH7XxmXbABlwi/6KJLJB3fhVTfhSqa+YwT/eN4xatsBOrQ3g/WiEFYZxztaO3 GYloXmdz7qHX5Vy4ANktTMYIxorfyRtz75U++EXqXcKb6A3T1NvXFtR9WrKAZDhVLEBv y9XBoBYeOQuT7r+7UXXM8J8WV2BMYyQuHv3WZTqy+V/2vef8lrBIx8SkDu+kJdaBfuoo qrTrIHrrOVDJj+i4dZb81pvre5u9a7iS57AnHEyXS1gTIT6cE4nTY6Ycc0JnnBwBlkJG Za0fu3fKb8MzMHzP51/o0B4t7QNJaR4hUacg+kEY4qjsWeEfHhIoUupY0DLJhcZqTjYr zGvw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1694656588; x=1695261388; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=UjBddbZXLqwDqs/dRSKLKY4HwUhf6Ai3WxLtYL+KxyQ=; b=pPekI5eYBKFjfhMtrcG2PoxrsxZ/n6KAS8Vcn36RLabuzVnIhU8A/a3xmVhDbdi5Vc HWPpVlf1fD8v+woYipfFfOavthOkW8wdacmcSxLCQnMci3h03Ch8Io1g3Qm65zRgciV4 SYbscGEjmT2sYglQXhHFpmQRli7ySCQmI0bnXdxf+g5FkkxGm0e8yMFB7zW4qbx7pIg9 GmtqF+GmvP/h7p9lXBqJHPt97nquQ84DdVXJdjdfK8kcBgndZv4u2c7odqQjN+zCbFYI +Me97WlLSYfafy1EljFaHT0GD6KBe1lKo5Dhh2mLsWTGxUdt5isLVQi6/bnU+yq9SoXA IpKQ== X-Gm-Message-State: AOJu0YxJybPxVjBxDsVLmuZrWBp9w7xsciHcHj4rge4R5YHrDdn+LRtO PeEElkP1soGhDzJxZTyUAgtePis8oBQ= X-Google-Smtp-Source: AGHT+IH0gGeX6zOzLjc3uszP5L1cVBy/yaTsK9vfF/9VEoisKrc6F33BJumlmtJCwJ85BnFPZfgq0s7SPdg= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a05:690c:2e05:b0:59b:e1db:5633 with SMTP id et5-20020a05690c2e0500b0059be1db5633mr53066ywb.1.1694656588217; Wed, 13 Sep 2023 18:56:28 -0700 (PDT) Reply-To: Sean Christopherson Date: Wed, 13 Sep 2023 18:55:24 -0700 In-Reply-To: <20230914015531.1419405-1-seanjc@google.com> Mime-Version: 1.0 References: <20230914015531.1419405-1-seanjc@google.com> X-Mailer: git-send-email 2.42.0.283.g2d96d420d3-goog Message-ID: <20230914015531.1419405-27-seanjc@google.com> Subject: [RFC PATCH v12 26/33] KVM: selftests: Add helpers to do KVM_HC_MAP_GPA_RANGE hypercalls (x86) From: Sean Christopherson To: Paolo Bonzini , Marc Zyngier , Oliver Upton , Huacai Chen , Michael Ellerman , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Sean Christopherson , "Matthew Wilcox (Oracle)" , Andrew Morton , Paul Moore , James Morris , "Serge E. Hallyn" Cc: kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, Chao Peng , Fuad Tabba , Jarkko Sakkinen , Anish Moorthy , Yu Zhang , Isaku Yamahata , Xu Yilun , Vlastimil Babka , Vishal Annapurve , Ackerley Tng , Maciej Szmigiero , David Hildenbrand , Quentin Perret , Michael Roth , Wang , Liam Merwick , Isaku Yamahata , "Kirill A . Shutemov" Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org From: Vishal Annapurve Add helpers for x86 guests to invoke the KVM_HC_MAP_GPA_RANGE hypercall, which KVM will forward to userspace and thus can be used by tests to coordinate private<=>shared conversions between host userspace code and guest code. Signed-off-by: Vishal Annapurve [sean: drop shared/private helpers (let tests specify flags)] Signed-off-by: Sean Christopherson --- .../selftests/kvm/include/x86_64/processor.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h index 4fd042112526..1911c12d5bad 100644 --- a/tools/testing/selftests/kvm/include/x86_64/processor.h +++ b/tools/testing/selftests/kvm/include/x86_64/processor.h @@ -15,6 +15,7 @@ #include #include +#include #include #include "../kvm_util.h" @@ -1171,6 +1172,20 @@ uint64_t kvm_hypercall(uint64_t nr, uint64_t a0, uint64_t a1, uint64_t a2, uint64_t __xen_hypercall(uint64_t nr, uint64_t a0, void *a1); void xen_hypercall(uint64_t nr, uint64_t a0, void *a1); +static inline uint64_t __kvm_hypercall_map_gpa_range(uint64_t gpa, + uint64_t size, uint64_t flags) +{ + return kvm_hypercall(KVM_HC_MAP_GPA_RANGE, gpa, size >> PAGE_SHIFT, flags, 0); +} + +static inline void kvm_hypercall_map_gpa_range(uint64_t gpa, uint64_t size, + uint64_t flags) +{ + uint64_t ret = __kvm_hypercall_map_gpa_range(gpa, size, flags); + + GUEST_ASSERT(!ret); +} + void __vm_xsave_require_permission(uint64_t xfeature, const char *name); #define vm_xsave_require_permission(xfeature) \