From owner-freebsd-virtualization@freebsd.org Thu May 14 22:18:58 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 048252E1FEE for ; Thu, 14 May 2020 22:18:58 +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 49NQtT6Qtgz41qM for ; Thu, 14 May 2020 22:18:57 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id DC9F62E1FEB; Thu, 14 May 2020 22:18:57 +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 DC6B02E1FEA for ; Thu, 14 May 2020 22:18:57 +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) server-signature RSA-PSS (4096 bits) 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 49NQtT5bmCz41qL for ; Thu, 14 May 2020 22:18:57 +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) server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id BBADA1A214 for ; Thu, 14 May 2020 22:18:57 +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 04EMIvl1055839 for ; Thu, 14 May 2020 22:18:57 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from bugzilla@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 04EMIv6r055838 for virtualization@FreeBSD.org; Thu, 14 May 2020 22:18:57 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: bugzilla set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 246321] Key press timing/repeat issue on UEFI VNC console for OpenBSD => 6.6 guest Date: Thu, 14 May 2020 22:18:57 +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: Unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: commit-hook@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: 2.1.33 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: Thu, 14 May 2020 22:18:58 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D246321 --- Comment #4 from commit-hook@freebsd.org --- A commit references this bug: Author: grehan Date: Thu May 14 22:18:12 UTC 2020 New revision: 361064 URL: https://svnweb.freebsd.org/changeset/base/361064 Log: Hide host CPUID 0x15 TSC/Crystal ratio/freq info from guest In recent Linux (5.3+) and OpenBSD (6.6+) kernels, and with hosts that support CPUID 0x15, the local APIC frequency is determined directly from the reported crystal clock to avoid calibration against the 8254 timer. However, the local APIC frequency implemented by bhyve is 128MHz, where most h/w systems report frequencies around 25MHz. This shows up on OpenBSD guests as repeated keystrokes on the emulated PS2 keyboard when using VNC, since the kernel's timers are now much shorter. Fix by reporting all-zeroes for CPUID 0x15. This allows guests to fall back to using the 8254 to calibrate the local APIC frequency. Future work could be to compute values returned for 0x15 that would match the host TSC and bhyve local APIC frequency, though all dependencies on this would need to be examined (for example, Linux will start using 0x16 for some hosts). PR: 246321 Reported by: Jason Tubnor (and tested) Reviewed by: jhb Approved by: jhb, bz (mentor) MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D24837 Changes: head/sys/amd64/vmm/x86.c head/sys/amd64/vmm/x86.h --=20 You are receiving this mail because: You are the assignee for the bug.=