From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.alien8.de (mail.alien8.de [65.109.113.108]) (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 EB98E3E95A4 for ; Fri, 8 May 2026 20:11:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=65.109.113.108 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778271110; cv=none; b=KiJg6CMGjAzx5DS6hQqvV39JGQHl2KA3vZvVU+C6XU8VIcnz/arfEZcuVLZ5QqeKAeynimLnuspFXB27QISKmrxikzC5QfMquOJTZQhUn+g/AXpioSVRhdcgDVkgERbTIcaXwc1hMYYGAdtPcdQD/dgHwxg9X3Kl/x1fdHFKpfs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778271110; c=relaxed/simple; bh=fIIEW0/IUn/2/ctWXUpRhT3A8fBRrfiy8luOg71aJ4M=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=FsTJXG5UmhxkwzGrbKrZSmsRuHDQj76ilk7eKO4LwJpEYgkQzrRLN9ly5hmkJNhO2UuGDBa2J0s672p+RBfNp3Gi9jNtkEfCkcgx/ZhgCspFeAJPXtulV4hSX8dB/RJ7Empd3zkbbEP0Uq/tWTCOd1oJGBpNyexajMxfAZinOPA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=alien8.de; spf=pass smtp.mailfrom=alien8.de; dkim=pass (4096-bit key) header.d=alien8.de header.i=@alien8.de header.b=BgUSsQZ1; arc=none smtp.client-ip=65.109.113.108 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=alien8.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=alien8.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (4096-bit key) header.d=alien8.de header.i=@alien8.de header.b="BgUSsQZ1" Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.alien8.de (SuperMail on ZX Spectrum 128k) with ESMTP id 231D040E01A1; Fri, 8 May 2026 20:11:40 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at mail.alien8.de Authentication-Results: mail.alien8.de (amavisd-new); dkim=pass (4096-bit key) header.d=alien8.de Received: from mail.alien8.de ([127.0.0.1]) by localhost (mail.alien8.de [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id hxj9EnbROTIS; Fri, 8 May 2026 20:11:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=alien8; t=1778271089; bh=4v7UY35eRzE7KrUAOf4RCMfZPGmDgtf1RFgSpH8CwWs=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=BgUSsQZ1U2LSSLglUj11H3swb5Qjx1VXL4WahPKcowqSiE/dsQcTPKhZmoB889hqO CuuAFfnIwnMV4/trq8W1yJNkRNqOgUUVAHHZDBdsD7RorTZ/nvENjyT3MxLqmysEbc M8ru/1Xe83hCMHvPNMaX41BUYDQKL3OShS96rA04i9I/R4YLG6+oGVGXgDSUENMmTJ dWr8EnO999DQkLdUnVUIap4p+Ki5LKcQQNTDzjKYi0gtcWHK8/8OYXx+1Pqj9/+gef exfLhBynFcqWKc/RxTMZ2AwHhLUNm3CGsObwNzIvcesafDQj8z50ToG0VJWxSZh9v9 XqYsCVihb2cMNxVe8rnrOfNDF1XTtsDkN37081bhMECDgDIXnqigLK+o4uzsrgaFRe EMC0JlMB+ToSsFROxlvjavPYHKEidO5ak3Pm/p5blOTJ2A87TAy6MIiz4NoPJUJ/DA jG73Nd6Eh7DOMh2uRal1YRANjLGrBIKR2gFPfGG/VUsSxGEQkoH1aJFpIcItGT8XpB 66gLn1vHObxFJ7P3ivlGtObdzXE9hzLLtHbuEeokAJ5QbroLKHo344Oi6qlgBZcAue 132Q2D8BXRzUNuXDdZ0bkkjRZUxPe+vWP7qoECo6athVJnrUyCRFQhNj6GdyhPbkHQ 2diqaortuEe7Q/5I2jjCy5y4= Received: from zn.tnic (pd953014d.dip0.t-ipconnect.de [217.83.1.77]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature ECDSA (P-256) server-digest SHA256) (No client certificate requested) by mail.alien8.de (SuperMail on ZX Spectrum 128k) with UTF8SMTPSA id 69A7340E00C2; Fri, 8 May 2026 20:11:15 +0000 (UTC) Date: Fri, 8 May 2026 22:11:07 +0200 From: Borislav Petkov To: Kim Phillips Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-coco@lists.linux.dev, x86@kernel.org, Sean Christopherson , Paolo Bonzini , K Prateek Nayak , Nikunj A Dadhania , Tom Lendacky , Michael Roth , Naveen Rao , David Kaplan , Pawan Gupta Subject: Re: [PATCH v3 0/6] KVM: SEV: Add support for IBPB-on-Entry and BTB Isolation Message-ID: <20260508201057.GEaf5DUQPAbvWQPC6M@fat_crate.local> References: <20260402202558.195005-1-kim.phillips@amd.com> Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20260402202558.195005-1-kim.phillips@amd.com> On Thu, Apr 02, 2026 at 03:25:52PM -0500, Kim Phillips wrote: > IBPB-on-Entry and BTB Isolation are supplemental Spectre V2 mitigations > available to SNP guests. Sashiko has a bunch of comments, pls address them: https://sashiko.dev/#/patchset/20260402202558.195005-1-kim.phillips%40amd.com Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette