From nobody Tue Aug 12 12:01:01 2025 X-Original-To: virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4c1VT93mnnz64cfx for ; Tue, 12 Aug 2025 12:01:01 +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 "R10" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4c1VT935Rdz46py for ; Tue, 12 Aug 2025 12:01:01 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1755000061; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Vl2/FY4wN3Y646n6HyVktN2OBlXZWxPvI9l8hq3kzCo=; b=gPvs/ubcBFLGbeClTLkVqKUbxgiPXbHrb1NnG1TvWIMcXh8I1QiER16WtRg4K9gy1OLkFD cBkes1B8wup4xtV0gGifVtXk3pJq0iZ/r3IHEs9X7yunpLmxCSRNmbrivYiEmfowIlZloC +61KdocF5AXGhmfS/KPH/72+ZQ3K3XAQWvjRnyQiXvNz80j2v0kdnR96o6vq7qJ3vhpAh7 oZall9ta77HVOoJIb00BuZDhAy+3YnoTzDcKC0Msh2KHpHlkwZ/LVcqr01EHn1+LIfSXu7 WvmEz+mRt4cvCPHUZd52rn6BY0HmOln4H1RZREM91id7TilmJjTjMNZdUv0OLg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1755000061; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Vl2/FY4wN3Y646n6HyVktN2OBlXZWxPvI9l8hq3kzCo=; b=sJx6xfJk0PRQIe3JThlEEbdJXseLtZDa3CfHb/LsX/sxJ0PlIe7Z5MkNwdFUwc7hBW9E9t uUchDUchuXd5VxAZzp/VQ5XgfMZnEx1nrOtw+aIm/QgHlErwskd/2H0Yh8YmY2nKMrQI5y MsVnvjbOYmf81dy5y0f4G9GHVmhsDaCnny9xYc58OP7Sx/fsjAmZedffkfvOa4WEgfnvrX cAf76kfc6N4QTXiGcvd/ad0HDIUhBa5h+ag0Ym9ihwVEP5psRrji3FbuSTyR200Lo8WEMk V7TZEi1fwyU5NQTitRedndoZ11SK7SuV9iA0eTo7hUx7uRU+5H7L+QcW0WSrUQ== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1755000061; a=rsa-sha256; cv=none; b=YlPtEFo+fjkJZXZvUknVmrcVIHOuRKeFJZNv3mwk7H58PsNr0PTEp3a4VBIJCKaInkaewU H1bZ4ZevRG9hjzUDpc5liccwFGLeefASxhg3EYW5B5ZMSKu/qeBPrQoAxGOyFPlvHsKLxs u4j2BGYdNqAanqF66vMs7hqdtnBC10j6NdZ11kTDRJYzdBOReugokqKRP/ixxDOI2Fz25c aQ1D7J68Q+FReCto8qoGAydmbge48Lb7b793WJxDBnjaM4jRYXCVwrZD7KLynhHIXDi41t LwYJf7u14d7z9n2IOY0R2sIHGz41JfRqPGIJxppHMgDRbLp8j6n/kEh82gCkTg== 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 4c1VT92WSXzd0P for ; Tue, 12 Aug 2025 12:01:01 +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 57CC11mO019582 for ; Tue, 12 Aug 2025 12:01:01 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 57CC11Tp019581 for virtualization@FreeBSD.org; Tue, 12 Aug 2025 12:01:01 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 256781] EC2 Nitro: TSC-low timecounter lags Date: Tue, 12 Aug 2025 12:01:01 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 13.0-RELEASE X-Bugzilla-Keywords: needs-patch, needs-qa X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: dwmw2@infradead.org X-Bugzilla-Status: Closed X-Bugzilla-Resolution: Overcome By Events X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: virtualization@FreeBSD.org X-Bugzilla-Flags: maintainer-feedback? mfc-stable13? mfc-stable12? X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D256781 --- Comment #41 from dwmw2@infradead.org --- But wait... why are you even calibrating the TSC against the PIT in the fir= st place? KVM *tells* you the frequency of the TSC! I take it back... slightly. You are allowed to use the *frequency* field of= the KVM clock structure. :) --=20 You are receiving this mail because: You are the assignee for the bug.=