From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ej1-f52.google.com (mail-ej1-f52.google.com [209.85.218.52]) (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 C2C8449483F for ; Wed, 2 Sep 2026 12:41:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.52 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788352887; cv=none; b=c34QlY9U+ZeJWEuhU4LkklCUhzR4A80ET/1g3CEwY+6OA9x+tlIbR3AHuyxGeH+mT6omHwV/eGv7tW83oD78q/QtumcJuXR+w0Vvv1LIApWXc1/VgZJ5IVadGyI1ky5aiN6QoGwtUtax2Yl2uZm0sXwIOsIU3afLxnGqNQmIVKY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788352887; c=relaxed/simple; bh=G+lYeOOKmDDA7vGsZcnldrVLSAUqszDTx32jDkEhPlw=; h=From:Message-ID:Date:MIME-Version:Subject:To:Cc:References: In-Reply-To:Content-Type; b=ElKVit3v39KgUMhhVfJfr4g/HAV2Oew2p70F1q75lD9IsNsyx8mq/cwsS4dDPZmt2clMNLaZ71iZBLIMUCLKFfZhe3NemLUn6n7t3h4yNmOWsAReJWK8JDnRr0OdnQ9IU5BalP2YFmTpRliaQezbLciE5W59lmRmPdeKQql8Rlg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=qbpWcDm6; arc=none smtp.client-ip=209.85.218.52 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="qbpWcDm6" Received: by mail-ej1-f52.google.com with SMTP id a640c23a62f3a-c250f28f1cdso163658166b.0 for ; Wed, 02 Sep 2026 05:41:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1788352884; x=1788957684; darn=vger.kernel.org; h=content-transfer-encoding:content-type:in-reply-to:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:from:to:cc:subject:date:message-id:reply-to:content-type; bh=mxFp9sQLUO1dX2aGvnd0BTgUuZ5fJWW6y/rR0ghk3rQ=; b=qbpWcDm6qQmmEfqES8ga9anX9VIeGZ9ZWVyzagDBEnsdhwbRNp8hfnmJt3QPGDif/m 3O+MJPSRyQjnznB8u3dBfrhBi606rYcH6goZKpobVZXx6Vey1ZHQLPGRb7mBkMG6XAG5 9GIHbzqyXcOXEl9GPp52l9446BTnpiZeSg9Cii2U2xt0uCsX9l80rueQmDWtJXsUzpSh lWZ9i/W+0i0LftGZtTIns6UkoXSTEwVMM1BqJKye/w3vWMScaUrgIEKEupe3HX2mq1vB 7Qq92Ol9AZXG2VK2ylJ+LsOZGuhyDs95ivk6I8Hsw7yl90xycvFO+lhWVYQwdikufTx4 JLlg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1788352884; x=1788957684; h=content-transfer-encoding:content-type:in-reply-to:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to:content-type; bh=mxFp9sQLUO1dX2aGvnd0BTgUuZ5fJWW6y/rR0ghk3rQ=; b=NCh8uTYKKgFKuCo1QDpr+HGXg9gtX/6ln0oZamtY8QRzQD2GAa+jY0dgzcPGCHKFkN 9DOqDvUQNaJBok2/SSVMQvEZXwqSpKwYxMD/krNCflmcUvps0dlmo1ItKY5qrYabnMzJ K79wsuVK052EdedNeNwzIW8a81q0mRp836Uzm8/N6w0L62HEPSudZ47F26Lzh64h/kJt D8bwzqM4/Q3DKhEkGNybU/zivmPIZujOBysz3jYdte4JNCFxGso06596kjDW2w92qhcU qgGXwOYLFAgAHmFNd2GJBsuU5Yp354OZDClxaAOng/d5h5o7A4pwusRyxjx3uP2tW0lW o7eQ== X-Forwarded-Encrypted: i=1; AHgh+RoQm/fICIVRvm62JdxFxIjv+4BIQ6KnyEoUMi2lMwEvoS0el7q6vNAhaA+yOCcTrl188pkYQ8FEkkyM1o4=@vger.kernel.org X-Gm-Message-State: AFuF++lTvnGp1v0mreQnO04Pl8Ch9Noqr2ArrjnyFPVIVOhkcVAg1gEB cBIQRaOQfDeVqpPgXMeH61PIvT30rX+FhXK+grUVzSSW9wahqMy8B6lN X-Gm-Gg: AYBFou0moaCk+tlR/p30w03bj+ELSDkuHMD9ejJ7E4dS/rWDWP1WlFtaelgg+TSd9rZ NgaAGGpEEzfjaqD9Lr6vCsliakpSGQF05hM9UKMVLtZlOkvAslwkUrzpYNWIq0eVTTWEVPGBMTZ 71W34ORnxnqMZCNa/4WYgnZX4JUTdMjSUyGPsrOxAT7rU9kOBhqzXTNhdoDesedY9ckxH0YlM48 ptQTVsOopgtPXob+61EaRi0f9T6LU6eq5/f07BC3mID6QED9vrlXO4nfyMh7oFEXznIftFDkg3U AJ1OWvJou4KXjrjzy/dLzCqjs9tPYfIA6Wxq2ys2OS8qx32bK9GJPa0eqkzNe50jUMBhIGJAzLX YVa8o8rafOuKYqlhrMnJujTV8D7FlaeUY6QIzOfNocdWDZJ9e7pwyj1F2l4KRIynFPAywPjKoUx 2SAaiyo8zgmOZ87w6oZp1LG2rr4d6W+sbDT2wQBdvTpPtMY+H741WR1ksWVvg4wZzFqXk= X-Received: by 2002:a17:907:9445:b0:c24:e1e9:69c with SMTP id a640c23a62f3a-c25d4de3f33mr302715266b.0.1788352883908; Wed, 02 Sep 2026 05:41:23 -0700 (PDT) Received: from [10.45.18.37] ([15.248.2.233]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c25d002f1dcsm127213466b.19.2026.09.02.05.41.22 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 02 Sep 2026 05:41:23 -0700 (PDT) From: Paul Durrant X-Google-Original-From: Paul Durrant Message-ID: <37f8d783-3305-44de-8ba0-ab0d2134a83e@xen.org> Date: Wed, 2 Sep 2026 13:41:21 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 09/13] KVM: x86/xen: Use atomic*() APIs instead of open coded equivalents To: David Woodhouse , seanjc@google.com, pbonzini@redhat.com Cc: joao.m.martins@oracle.com, boris.ostrovsky@oracle.com, ankur.a.arora@oracle.com, tglx@kernel.org, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, x86@kernel.org, syzbot+208f7f3e5f59c11aeb90@syzkaller.appspotmail.com, syzkaller-bugs@googlegroups.com, suryasaimadhu369@gmail.com, lkp@intel.com, nicoyip.dev@gmail.com, frn1furkan10@gmail.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, imv4bel@gmail.com References: <20260831213632.81023-1-dwmw2@infradead.org> <20260831213632.81023-10-dwmw2@infradead.org> Content-Language: en-US In-Reply-To: <20260831213632.81023-10-dwmw2@infradead.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 31/08/2026 22:26, David Woodhouse wrote: > From: Sean Christopherson > > Replace the open coded atomic asm blobs in the Xen event injection code > with equivalent atomic{,64}_xxx() operations. Casting the event channel > to atomic types is ugly, but not as ugly as asm blobs. > > No functional change intended. > > Signed-off-by: Sean Christopherson > Signed-off-by: David Woodhouse > --- > arch/x86/kvm/xen.c | 35 ++++++++++++----------------------- > 1 file changed, 12 insertions(+), 23 deletions(-) > Not entirely clear why going to the trouble of replacing the asm blobs in patch 8 was necessary only to remove them here but, if that's preferable to squashing this into patch 8... Reviewed-by: Paul Durrant