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 E9EF0C433EF for ; Fri, 15 Jul 2022 19:31:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231393AbiGOTbI (ORCPT ); Fri, 15 Jul 2022 15:31:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32982 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231397AbiGOTaZ (ORCPT ); Fri, 15 Jul 2022 15:30:25 -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 C53C9655BA for ; Fri, 15 Jul 2022 12:30:21 -0700 (PDT) Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-31c972f5f84so46616947b3.1 for ; Fri, 15 Jul 2022 12:30:21 -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=TAzWPzxWt/xQfClUKSK8iVRAelG3qw/M2QmSChpgMSI=; b=YNM9JNlWqYCDiOo3N8HlI4kB6O7IiOnhbpDLU5h7U/5DOLcS/NETWbGtl2M5UsAjeU 5FQs1H/BQZETak+scuHq+3xxRENuOnxo3ZmnHKeUYLxlRlA94cNAd8IT2pFoqRcmPIKK 0o+27bCLWXWn2JJ0w10g5lPDoerBxd2qYVjX8W0aAkiNCeA7OC53VkZo84reYKvo98vM +KGohTOxpTC1z0XG4DcXsZCENDMLVxCcONr7EYF+BTbtMzbe1cGhG0onOvPAgH4QM+Yv 3hRGC/jitECNYZz7Ls9gWgR4kWwNkm+YYB2DCJSIhRyYrHMrRKHDe0Hw3hqv6da++U02 Ytaw== 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=TAzWPzxWt/xQfClUKSK8iVRAelG3qw/M2QmSChpgMSI=; b=zynYa+f4ecMhl+WafiyDmRP/KPMtyG2VuFPaUtsBh+Y6VkRO+1Qy3ghyP6vWnhRrLZ PU1jlPTLejai8gIQuv0gS4w1PkR0oJQksPctTA0wWFehCTuqv70EJ5RjpXR8ptLEy56C YPVjRVJ+jzHlIpXpR9SsPblExp9MVDDDnupwWljcjejgdelTrtcsh9hbYIT4HT/PpoHd pojey7vbbiQ5Rn2eN4QPptGYdZ1GSn5xvG2czbpY8q1BRtom8S9cxwWLxnKFZFkUlUMw C6KHN+BTrju26it2DdfnAuLJ/DqqyKvmd8SIp+0agXyQdblc3w2/QZ1WVFmBcyrEOTnA R/Sg== X-Gm-Message-State: AJIora8F0jLzRZEKFVfdhAqMJRkxzredochkaUgyfYPJnU/RWoM2YIBB KlfCQnzHd8I03F69x2kciX1UjsfddT0= X-Google-Smtp-Source: AGRyM1tRj6psVB1GLADfUquHWkwvBdbCnSPQ69Mq1ZfxyCnynBeVXK2A+5crNaMaFlFr3oKyKuVU8aftytc= X-Received: from pgonda1.kir.corp.google.com ([2620:15c:29:203:bd4e:b81d:4780:497d]) (user=pgonda job=sendgmr) by 2002:a81:6cf:0:b0:31c:913c:144c with SMTP id 198-20020a8106cf000000b0031c913c144cmr17753756ywg.437.1657913420660; Fri, 15 Jul 2022 12:30:20 -0700 (PDT) Date: Fri, 15 Jul 2022 12:29:53 -0700 In-Reply-To: <20220715192956.1873315-1-pgonda@google.com> Message-Id: <20220715192956.1873315-9-pgonda@google.com> Mime-Version: 1.0 References: <20220715192956.1873315-1-pgonda@google.com> X-Mailer: git-send-email 2.37.0.170.g444d1eabd0-goog Subject: [RFC V1 07/10] tools: Add atomic_test_and_set_bit() From: Peter Gonda To: kvm@vger.kernel.org Cc: linux-kernel@vger.kernel.org, marcorr@google.com, seanjc@google.com, michael.roth@amd.com, thomas.lendacky@amd.com, joro@8bytes.org, mizhang@google.com, pbonzini@redhat.com, Peter Gonda Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org atomic_test_and_set_bit() allows for atomic bitmap usage from KVM selftests. Signed-off-by: Peter Gonda Suggested-by: Sean Christopherson --- tools/arch/x86/include/asm/atomic.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/tools/arch/x86/include/asm/atomic.h b/tools/arch/x86/include/asm/atomic.h index 1f5e26aae9fc..45ea15c98957 100644 --- a/tools/arch/x86/include/asm/atomic.h +++ b/tools/arch/x86/include/asm/atomic.h @@ -8,6 +8,7 @@ #define LOCK_PREFIX "\n\tlock; " +#include #include /* @@ -70,4 +71,10 @@ static __always_inline int atomic_cmpxchg(atomic_t *v, int old, int new) return cmpxchg(&v->counter, old, new); } +static inline int atomic_test_and_set_bit(long nr, volatile unsigned long *addr) +{ + GEN_BINARY_RMWcc(LOCK_PREFIX __ASM_SIZE(bts), *addr, "Ir", nr, "%0", "c"); + +} + #endif /* _TOOLS_LINUX_ASM_X86_ATOMIC_H */ -- 2.37.0.170.g444d1eabd0-goog