From owner-freebsd-virtualization@freebsd.org Sun Nov 8 20:45:33 2020 Return-Path: Delivered-To: freebsd-virtualization@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 76A682D4A19 for ; Sun, 8 Nov 2020 20:45:33 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (mailman.nyi.freebsd.org [IPv6:2610:1c1:1:606c::50:13]) by mx1.freebsd.org (Postfix) with ESMTP id 4CTmNY2lrFz4qTS for ; Sun, 8 Nov 2020 20:45:33 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 5C68D2D4A90; Sun, 8 Nov 2020 20:45:33 +0000 (UTC) Delivered-To: virtualization@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 5AF1C2D4A18 for ; Sun, 8 Nov 2020 20:45:33 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4CTmNY1nNvz4qR6 for ; Sun, 8 Nov 2020 20:45:33 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 3027825D8B for ; Sun, 8 Nov 2020 20:45:33 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 0A8KjWPs048087 for ; Sun, 8 Nov 2020 20:45:32 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 0A8KjW0u048086 for virtualization@FreeBSD.org; Sun, 8 Nov 2020 20:45:32 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 250802] bhyve exited with status 134 when GPU PCI passthrough Date: Sun, 08 Nov 2020 20:45:33 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bhyve X-Bugzilla-Version: 12.2-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: kib@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.34 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: Sun, 08 Nov 2020 20:45:33 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D250802 --- Comment #35 from Konstantin Belousov --- (In reply to mr.xanto from comment #34) Ok, so D27138 cannot work because BARs are not mapped into userspace, and p= atch caused infinite recursion. Not to mention Peter' objection. Lets try to see why EPT violation was translated to instruction assist inst= ead of being handled by vm_fault(). First, you use stable/12 and you do not have debugging turned on. Please enable at least INVARIANTS in your kernel. Second, I do not see how to find the cause except by some debugging. Apply the following patch for start and report if the printf triggered diff --git a/sys/amd64/vmm/vmm.c b/sys/amd64/vmm/vmm.c index 3a1d0d54bca..1e715d458a9 100644 --- a/sys/amd64/vmm/vmm.c +++ b/sys/amd64/vmm/vmm.c @@ -650,6 +650,7 @@ vm_mem_allocated(struct vm *vm, int vcpuid, vm_paddr_t = gpa) return (true); /* 'gpa' is sysmem or devme= m */ } +if (gpa >=3D 0xd0000000 && gpa < 0xe0000000) printf("ppt_is_mmio %#lx %d\n= ", gpa, ppt_is_mmio(vm, gpa)); if (ppt_is_mmio(vm, gpa)) return (true); /* 'gpa' is pci passthru mm= io */ --=20 You are receiving this mail because: You are the assignee for the bug.=