From mboxrd@z Thu Jan 1 00:00:00 1970 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 B7DD7C433EF for ; Fri, 8 Apr 2022 21:06:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236066AbiDHVI0 (ORCPT ); Fri, 8 Apr 2022 17:08:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37834 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239715AbiDHVIC (ORCPT ); Fri, 8 Apr 2022 17:08:02 -0400 Received: from mail-pl1-x64a.google.com (mail-pl1-x64a.google.com [IPv6:2607:f8b0:4864:20::64a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AE34913C70C for ; Fri, 8 Apr 2022 14:05:57 -0700 (PDT) Received: by mail-pl1-x64a.google.com with SMTP id a5-20020a170902ecc500b00156762be487so5022532plh.10 for ; Fri, 08 Apr 2022 14:05:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=GW1vKV9N5teOyvfb5I9sUS6KK3JTNrM8T3BSiJA3u58=; b=YPJzdBeiwqt4fjOsYpcbGkh1gLEAIoalUN0DQYlSc34An29/tzLZqwDKzPep8ILYxR Gu3b8EV6mtpXvJASkRADF/66OiaUIGTMgyJ5ovvU6ymdAYVy6wSWmka6NJGH0QRLTXL6 r2umjRjjUO6obXxOyLt75iI38lUoWAVVot2IPIJrVpmnX2hCCKBQw8JrfIKdkNKRgrh9 HaASvu7mS+//qfMTma0LOYpXsp7UOHwgUHWVY2EbYHGbGfqmSHagSzBTN5AqRBH8YL7h 0etiyCrAptQNAVpnH5L7JXc2gn6U8vp7IR3Wvr+y9Af1hD+XHs5GzjRM+yZELeINoH3k fh4w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=GW1vKV9N5teOyvfb5I9sUS6KK3JTNrM8T3BSiJA3u58=; b=yJbaYvg9y+qYFXdQMg7ix20Z83sU6Vbw8xI32x+7zthmAR5NULtMUPeVg+w9/s44+q FnwkDkPhK/qHV91gypV0Stav51cvmHhFVWQEIBrr7cy/S6XApV59Kz15oPVwZYHi965K 8wRlKHeWwPp2cQ0qCnm1hWiPxKz3R4DeyRVWZ0jnWZUl05O6beCo30uOEKnR80opDWcy 9TJvPQzGY8/4WuuUzjYAT1+goEAeXEwwKtIKdwRSLe6MOgENrEnXe6RFuIXT659gznTO NIFEeKFof6Efe23sHTBxbPe/FWdXk7OM2KcseiJ7gzk0l6AFb+nGwgXC9BMHKxcE00MZ cUjg== X-Gm-Message-State: AOAM532HWmIaj+I2EE1COy3508WVLMVI1ZyrfbaiWF+QwZSjZcMitx71 9G7JYLfXYCSAN8GLcmD1KFxAifpqq/2qY+Kp X-Google-Smtp-Source: ABdhPJxPmdiW7rz30UJ3Ed7dM0wffN2Qn1qWfxF8EThuEe9ikuR8T5UVcG1/UtpEZ1q7GRUv78CpjaDK4xF4IDVi X-Received: from vannapurve2.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:41f8]) (user=vannapurve job=sendgmr) by 2002:a05:6a00:198c:b0:4fa:c717:9424 with SMTP id d12-20020a056a00198c00b004fac7179424mr21025716pfl.63.1649451957132; Fri, 08 Apr 2022 14:05:57 -0700 (PDT) Date: Fri, 8 Apr 2022 21:05:42 +0000 In-Reply-To: <20220408210545.3915712-1-vannapurve@google.com> Message-Id: <20220408210545.3915712-3-vannapurve@google.com> Mime-Version: 1.0 References: <20220408210545.3915712-1-vannapurve@google.com> X-Mailer: git-send-email 2.35.1.1178.g4f1659d476-goog Subject: [RFC V1 PATCH 2/5] selftests: kvm: Fix inline assembly for hypercall From: Vishal Annapurve To: x86@kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org Cc: pbonzini@redhat.com, vkuznets@redhat.com, wanpengli@tencent.com, jmattson@google.com, joro@8bytes.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, shauh@kernel.org, yang.zhong@intel.com, drjones@redhat.com, ricarkol@google.com, aaronlewis@google.com, wei.w.wang@intel.com, kirill.shutemov@linux.intel.com, corbet@lwn.net, hughd@google.com, jlayton@kernel.org, bfields@fieldses.org, akpm@linux-foundation.org, chao.p.peng@linux.intel.com, yu.c.zhang@linux.intel.com, jun.nakajima@intel.com, dave.hansen@intel.com, michael.roth@amd.com, qperret@google.com, steven.price@arm.com, ak@linux.intel.com, david@redhat.com, luto@kernel.org, vbabka@suse.cz, marcorr@google.com, erdemaktas@google.com, pgonda@google.com, seanjc@google.com, diviness@google.com, Vishal Annapurve Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Fix inline assembly for hypercall to explicitly set eax with hypercall number to allow the implementation to work even in cases where compiler would inline the function. Signed-off-by: Vishal Annapurve --- tools/testing/selftests/kvm/lib/x86_64/processor.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index 9f000dfb5594..4d88e1a553bf 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -1461,7 +1461,7 @@ uint64_t kvm_hypercall(uint64_t nr, uint64_t a0, uint64_t a1, uint64_t a2, asm volatile("vmcall" : "=a"(r) - : "b"(a0), "c"(a1), "d"(a2), "S"(a3)); + : "a"(nr), "b"(a0), "c"(a1), "d"(a2), "S"(a3)); return r; } -- 2.35.1.1178.g4f1659d476-goog