From owner-freebsd-virtualization@freebsd.org Sat Mar 23 22:07:44 2019 Return-Path: Delivered-To: freebsd-virtualization@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 68038155E5EB for ; Sat, 23 Mar 2019 22:07:44 +0000 (UTC) (envelope-from ctuffli@gmail.com) Received: from mail-ot1-f42.google.com (mail-ot1-f42.google.com [209.85.210.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 8F39A84E4E for ; Sat, 23 Mar 2019 22:07:43 +0000 (UTC) (envelope-from ctuffli@gmail.com) Received: by mail-ot1-f42.google.com with SMTP id x8so4926710otg.7 for ; Sat, 23 Mar 2019 15:07:43 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=y/2fPSg+1/qeeQ2PHA59wiw9DdJBw5QbpkJBqLR7gGs=; b=IztBze2EjGEsZ8K9wnY5+b9WmnC68T+m9bHX6w7t4QfqUx3GcWw8+QV9xXt3FZS+SG j8hs/Nh1maHtNxp8a7vF7KNsVHncnUNAdtpE1ZetGH0OENW84hpIn8rxn78zq0247K0m wSdluvNwO+lm3OfPY0hgsQyozJ6iF5JljgBIR1Kaf05ppw3dpSJmciuajr0q1DgB8kiF r/IFttZt8QT3/nbdcxVDd2WEMnDHrCCU7sUmhTKrYOYcQDQ9i7Wzgz2lBH36n6setKhI a+VCaKbktVwnx733EHnimxwMSAR/lFi0rtcZ5H4U43BOTqe7XgtLET4I2g5WHiIjiYUM crbQ== X-Gm-Message-State: APjAAAX6wSumiWSpfq4Qlx7retWi8trgBIlKGw3l3F8zBJjA5s55JzeW 42nkfzdXktOfc8xZOV8XdQGdGj5A X-Google-Smtp-Source: APXvYqx+1iWOI7DwHeizsBmsHWXBHMIM7HLU7Kla5P3b8p+ZvOXaMP4YKZ3RtXVpoW6oyh+HtFWilA== X-Received: by 2002:a9d:73c2:: with SMTP id m2mr11811049otk.338.1553378857289; Sat, 23 Mar 2019 15:07:37 -0700 (PDT) Received: from mail-oi1-f172.google.com (mail-oi1-f172.google.com. [209.85.167.172]) by smtp.gmail.com with ESMTPSA id 65sm4678723ota.35.2019.03.23.15.07.36 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 23 Mar 2019 15:07:36 -0700 (PDT) Received: by mail-oi1-f172.google.com with SMTP id v7so4299095oie.8 for ; Sat, 23 Mar 2019 15:07:36 -0700 (PDT) X-Received: by 2002:aca:7541:: with SMTP id q62mr6803313oic.49.1553378856519; Sat, 23 Mar 2019 15:07:36 -0700 (PDT) MIME-Version: 1.0 From: Chuck Tuffli Date: Sat, 23 Mar 2019 15:07:25 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: bhyve threading model? To: freebsd-virtualization@freebsd.org Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 8F39A84E4E X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; spf=pass (mx1.freebsd.org: domain of ctuffli@gmail.com designates 209.85.210.42 as permitted sender) smtp.mailfrom=ctuffli@gmail.com X-Spamd-Result: default: False [-3.15 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; RWL_MAILSPIKE_GOOD(0.00)[42.210.85.209.rep.mailspike.net : 127.0.0.18]; R_SPF_ALLOW(-0.20)[+ip4:209.85.128.0/17]; TO_DN_NONE(0.00)[]; RCVD_COUNT_THREE(0.00)[4]; MX_GOOD(-0.01)[cached: alt3.gmail-smtp-in.l.google.com]; NEURAL_HAM_SHORT(-0.93)[-0.925,0]; FORGED_SENDER(0.30)[chuck@freebsd.org,ctuffli@gmail.com]; MIME_TRACE(0.00)[0:+]; R_DKIM_NA(0.00)[]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:209.85.128.0/17, country:US]; FROM_NEQ_ENVFROM(0.00)[chuck@freebsd.org,ctuffli@gmail.com]; TO_DOM_EQ_FROM_DOM(0.00)[]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-virtualization@freebsd.org]; DMARC_NA(0.00)[freebsd.org]; RCPT_COUNT_ONE(0.00)[1]; SUBJECT_ENDS_QUESTION(1.00)[]; RCVD_IN_DNSWL_NONE(0.00)[42.210.85.209.list.dnswl.org : 127.0.5.0]; IP_SCORE(-1.21)[ipnet: 209.85.128.0/17(-3.86), asn: 15169(-2.14), country: US(-0.07)]; RCVD_TLS_LAST(0.00)[] X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 23 Mar 2019 22:07:44 -0000 In the process of refactoring some of bhyve's NVMe emulation code, I'm noticing there are a handful of mutexes. But this leads me to believe I don't understand how the emulated devices work. Is there a paper / video / code comment / etc. somewhere that explains bhyve's threading model, specifically around the emulated devices? TIA --chuck