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 3015CC19F2C for ; Mon, 1 Aug 2022 20:12:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234819AbiHAUMJ (ORCPT ); Mon, 1 Aug 2022 16:12:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54776 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234862AbiHAULa (ORCPT ); Mon, 1 Aug 2022 16:11:30 -0400 Received: from mail-pf1-x449.google.com (mail-pf1-x449.google.com [IPv6:2607:f8b0:4864:20::449]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 29FFE3D598 for ; Mon, 1 Aug 2022 13:11:29 -0700 (PDT) Received: by mail-pf1-x449.google.com with SMTP id j9-20020aa78009000000b0052b5ccdf6b8so3985323pfi.6 for ; Mon, 01 Aug 2022 13:11:28 -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=wPIJC0kH8Rr28qz9cI6ptFgd7ftpiJ73tbDRbiXcB8I=; b=qs4eB9s3lwhhSxqXr3+IIqX1g9QuZMjEDi6wYfdXQy6yKNUcBcBnN99NyZlyFogPr5 IE0HX7r7hzwoS4Szkr9eUvt7FTLaKBzzn2cEGWXuRPQGi4it4YwhYEDC8oF45U1sUV08 ysiMAfQu4DIO2cs0JvVVawSrpYNJFSMIguF4rWcecR73XFZQPn91+Kdct1SKkJStr74L yvGrmVRS/kQsB9RXsCg66XbvyWXYWjUutbAAk3IofJqdXX7tOdD6E/pdnkXCk7sdtYi6 1n2KpMUMQdmb/vDuLd3nTkYB1szzHk3WXoMr7U1huFK5VGFAgjieHcXaZsTkZwinNy0D a7PA== 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=wPIJC0kH8Rr28qz9cI6ptFgd7ftpiJ73tbDRbiXcB8I=; b=yWKoTTpE0WAb8fFZ9DRjalc8e9OJE+JP9OdqrYpc/PrfkC7iP+ujQdbtJhPklte/G3 9GopZY3WTuJmG70fPiAmcRP+G3DOM6RF0JcXFYAzJndpTSl6cCFyL7cLusuF24E4DZDP yhm8e/aJkHm7icUPVuWTg1JpcbJ9oEAuVtJtlfgbqFlUYsPBkjfUJEVjzwwCmjvz33/R InEY1q37dR1lEAzbfKGFeILExx/1V9vfxzGShCzQyOoYc1JcmNaJrnufYJNbSTioEN5I DB3EzAOJhyiPjsxov++oDwnixyDfC0nRGZcqrQknc3XaCXAKO0O/cceZdO0ZX3tZFciX 3RlA== X-Gm-Message-State: ACgBeo07QzmWBzknGrGTaoM4rg+QqTEYTUrxvETVWxn9qYfSDC0pEbon Ef+PxU9MGVB8hw7RnYhY9y8GALCnPWHqrkXlFy0CKFbwtjjHx2RLYMVNsxGGJCtp4qr3giI61pl c+QKamSaCH15fVhKY0LrEwr8o4lmyFCwfsm4VN8dEHTneoAIP52Xvb06zpQ== X-Google-Smtp-Source: AA6agR602aRiSFjdoUoSaxddQh4yvPJntXGflHCl3KfVcNOfyEwRIrD5A0oTb1nJKSU50uuKeZvxzZvWcnA= X-Received: from pgonda1.kir.corp.google.com ([2620:15c:29:203:6be2:f99c:e23c:fa12]) (user=pgonda job=sendgmr) by 2002:a17:90a:249:b0:1e0:a8a3:3c6c with SMTP id t9-20020a17090a024900b001e0a8a33c6cmr911864pje.0.1659384687606; Mon, 01 Aug 2022 13:11:27 -0700 (PDT) Date: Mon, 1 Aug 2022 13:11:06 -0700 In-Reply-To: <20220801201109.825284-1-pgonda@google.com> Message-Id: <20220801201109.825284-9-pgonda@google.com> Mime-Version: 1.0 References: <20220801201109.825284-1-pgonda@google.com> X-Mailer: git-send-email 2.37.1.455.g008518b4e5-goog Subject: [V2 08/11] 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: kvm@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..01cc27ec4520 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, unsigned long *addr) +{ + GEN_BINARY_RMWcc(LOCK_PREFIX __ASM_SIZE(bts), *addr, "Ir", nr, "%0", "c"); + +} + #endif /* _TOOLS_LINUX_ASM_X86_ATOMIC_H */ -- 2.37.1.455.g008518b4e5-goog