From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 777793176EB for ; Fri, 15 Aug 2025 19:14:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755285279; cv=none; b=fbRO8++oNAxXZMCkxoozWCXDrhzH2UnmPxMFuwfgULApT5r7kWWrpPHD0C8eX4bim0e0ZkagBIJwY8mdvK1PUQcYbL+zvnSrPT8q+Cn6BnKfV/Mwv/VS3bd8tzkQ29kytRK5Y4ZyWeuMMRqJa98FxVqEGnqZRgqe3FDCwipd92E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755285279; c=relaxed/simple; bh=t7lDdd/prjdNckA3dH6FxmW8FJ9YrEOD3cdSwXgfAn8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=cAvBhFY6JQ6yqeutTa2i+3dki2cgWv6+Dk5/mqdWNLFGyUTVaHzlQ+aJSdYcbwyKTdAfbLNHp9w913n5KPdPm31KMoJLRSm4jhu2jo638UA1xkggz4uH0NSjgX5ky4Tm4upzeV2E6WvoNf1OS5xLZGDz38Wgj78wA6sRq3a5tQg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=h3ye08IV; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="h3ye08IV" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1755285277; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=t7lDdd/prjdNckA3dH6FxmW8FJ9YrEOD3cdSwXgfAn8=; b=h3ye08IVIS4vqh0NgpaPq5i7ILg5F9wmBhqf0VrDJWbm2ZBvqkxOyb/nlVZ/YpMeMx9DCv lBo3KVSJPtPBIwNISGc0Ci2MN1YAxFp2oGJIUcnCLK3aTH9L2NvecMa/yPHv2iJlOL9NB2 O80rMYP3B6YaNas8zZ7dvsN/1vzebus= Received: from mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-310-Qq_5zeBEO0qiGHCA0Gd_Kg-1; Fri, 15 Aug 2025 15:14:33 -0400 X-MC-Unique: Qq_5zeBEO0qiGHCA0Gd_Kg-1 X-Mimecast-MFC-AGG-ID: Qq_5zeBEO0qiGHCA0Gd_Kg_1755285271 Received: from mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.111]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 74C1D1955D56; Fri, 15 Aug 2025 19:14:30 +0000 (UTC) Received: from dhcp-27-174.brq.redhat.com (unknown [10.44.33.47]) by mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with SMTP id CFBA81800280; Fri, 15 Aug 2025 19:14:24 +0000 (UTC) Received: by dhcp-27-174.brq.redhat.com (nbSMTP-1.00) for uid 1000 oleg@redhat.com; Fri, 15 Aug 2025 21:13:13 +0200 (CEST) Date: Fri, 15 Aug 2025 21:13:06 +0200 From: Oleg Nesterov To: "Edgecombe, Rick P" Cc: "debug@rivosinc.com" , "mingo@kernel.org" , "bp@alien8.de" , "broonie@kernel.org" , "peterz@infradead.org" , "hpa@zytor.com" , "linux-kernel@vger.kernel.org" , "tglx@linutronix.de" , "dave.hansen@linux.intel.com" , "Mehta, Sohil" , "axboe@kernel.dk" , "x86@kernel.org" Subject: Re: [PATCH 5/6] x86/shstk: don't create the shadow stack for PF_USER_WORKERs Message-ID: <20250815191306.GK11549@redhat.com> References: <20250814101435.GA17362@redhat.com> <8818b456954644ce609e07d77a65714788ef9098.camel@intel.com> <20250815121702.GB11549@redhat.com> <20250815165445.GJ11549@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 Rick, I'll try to write another email and send V2 next week. Although perhaps I'll send some other unrelated and "obvious" cleanups before that... Until then: On 08/15, Edgecombe, Rick P wrote: > > Maybe you can explain Damn yes, agreed, my fault. > Stop me if I'm telling you something you already know... Or, quite possibly, you should stop me to send the patches which change the code I can hardly understand ;) And that is why I CC'ed the experts like you. See you next week, Oleg.