From mboxrd@z Thu Jan 1 00:00:00 1970 From: giacomo@tesio.it (Giacomo Tesio) Date: Mon, 15 Jan 2018 10:57:17 +0100 Subject: [9fans] Spectre and Meltdown In-Reply-To: <6B13EEEE29329BEEA52D20997C65F2D5@felloff.net> References: <6B13EEEE29329BEEA52D20997C65F2D5@felloff.net> Message-ID: Topicbox-Message-UUID: cae901cc-ead9-11e9-9d60-3106f5b1d025 2018-01-10 17:59 GMT+01:00 : > wait and see if all these scrambled together mitigations actually work. Sorry if this is a dumb question, but the descriptions I read of the mitigations taken in Linux for Meltdown (in particular kernel page-table isolation) sound really familiar to my poor understanding of how plan 9 and 9front already manage user memory. As far as I can remember plan9 flush tables very often and clearly separate kernel memory pages and user space memory. So my dumb question is: are plan9/9front and friends actually vulnerable to Meltdown? Giacomo