From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AH8x224xkoq2OaPC5rA7IITOPNxOmNRsdYyy3Bl1TT0GQGPdp7nsd7gJ83nhoWChooJOHS8ZxTkn ARC-Seal: i=1; a=rsa-sha256; t=1516897006; cv=none; d=google.com; s=arc-20160816; b=A5j6BWA19TeawyOdjkkrQhwsUOOn5ICWKAXBpIyJx2kudEhEXhYu073j1APvfCBiJI 4soIvegyDCLfUt/JDfu+w2K+iyKAjK56p5ymQeFHQvfuqR7m8x/qdinwPYnzVYdTyfs+ UDmBGqMq/10kq14/T29miaOkqNTOsk5Q5jGM9jiw3xDjP25vi9Q2YHzyg6DvmF9OjRKn 1mp9XxqylL4D2QiROrNp87FCsYQn2Ahg0xu/SCdMok8UANI15GaYkA6OJsrJCAJIO5BK GecPwYV8T9OZGxbU64/uK11VaSjZLqx5Eun3lDYm76WvSSQYtT2NlSTupcXgyU8aqbQD h0UQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:organization:references :in-reply-to:message-id:subject:cc:to:from:date :arc-authentication-results; bh=vAfUJ0JnkheQTSRY4e0UMzgzq5Arh5MYZV5PcTQoFEY=; b=AkaXaLKh1xFKIpeVt3KxljTFujX8OhB+v2BlPBXoRKM1C5cO7eC8mIGwBphkqU/rmS zVvdIEJar/FX+43QZsEsCsu3qT9w7d0/I/GG+itqb4dUSYw7UxIXxjIPOaAIOmiKyX7R zbnRwlBllbu1MSJ+xj7+d23O0Ay6YImzwHjcVsq5g4BEtfTJ3MOLsMmU79GD8Li3johf BeN5cNfTMdZcqkaU2fzhgxNNcggxmXB/jMSRFoVwgh74fQhReP5SYJhPvrGu+u76OP63 WmvQ7tFTXDt1VfSoI+Tpn41NULnK9CFL2zLLzE+I+Y/PBgBGUwwRD3gsTmV/b5M3edWf S+2Q== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of gnomes@lxorguk.ukuu.org.uk designates 82.70.14.225 as permitted sender) smtp.mailfrom=gnomes@lxorguk.ukuu.org.uk Authentication-Results: mx.google.com; spf=pass (google.com: domain of gnomes@lxorguk.ukuu.org.uk designates 82.70.14.225 as permitted sender) smtp.mailfrom=gnomes@lxorguk.ukuu.org.uk Date: Thu, 25 Jan 2018 16:16:14 +0000 From: Alan Cox To: David Woodhouse Cc: Thomas Gleixner , arjan@linux.intel.com, karahmed@amazon.de, x86@kernel.org, linux-kernel@vger.kernel.org, tim.c.chen@linux.intel.com, bp@alien8.de, peterz@infradead.org, pbonzini@redhat.com, ak@linux.intel.com, torvalds@linux-foundation.org, gregkh@linux-foundation.org, dave.hansen@intel.com, ashok.raj@intel.com, mingo@kernel.org Subject: Re: [PATCH v4 6/7] x86/cpufeature: Blacklist SPEC_CTRL on early Spectre v2 microcodes Message-ID: <20180125161547.33e63bb3@alans-desktop> In-Reply-To: <1516887714.30244.121.camel@infradead.org> References: <1516872189-16577-1-git-send-email-dwmw@amazon.co.uk> <1516872189-16577-7-git-send-email-dwmw@amazon.co.uk> <1516876994.30244.51.camel@infradead.org> <1516879213.30244.74.camel@infradead.org> <1516887714.30244.121.camel@infradead.org> Organization: Intel Corporation X-Mailer: Claws Mail 3.15.1-dirty (GTK+ 2.24.31; x86_64-redhat-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1590555855308082400?= X-GMAIL-MSGID: =?utf-8?q?1590581795337168903?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: > Here's what I have now. I'm happy enough with this, so the main thing > I'm looking for is an ack from Alan for patch #5 of the series, if I've > got that sufficiently correct now. You have my ACK for patch 5: Any further changes I'll submit as updates once it's merged. I am happy with patch 5 and I think for 64bit we are probably done for the mainstream. VIA/Centaur data would be nice. The microcode otoh I don't think makes sense - do you want to be secure with a slightly higher risk of crashes or insecure ? Once you can point at a newer ucode for each case then yes I personally at least think it then makes sense to tell users they want the newer one. Alan