From owner-svn-src-head@freebsd.org Tue Apr 9 19:22:09 2019 Return-Path: Delivered-To: svn-src-head@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 A68D2156A614; Tue, 9 Apr 2019 19:22:09 +0000 (UTC) (envelope-from jhb@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 4854C75237; Tue, 9 Apr 2019 19:22:09 +0000 (UTC) (envelope-from jhb@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 27809F96D; Tue, 9 Apr 2019 19:22:09 +0000 (UTC) (envelope-from jhb@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x39JM83O048973; Tue, 9 Apr 2019 19:22:08 GMT (envelope-from jhb@FreeBSD.org) Received: (from jhb@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x39JM8K1048972; Tue, 9 Apr 2019 19:22:08 GMT (envelope-from jhb@FreeBSD.org) Message-Id: <201904091922.x39JM8K1048972@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: jhb set sender to jhb@FreeBSD.org using -f From: John Baldwin Date: Tue, 9 Apr 2019 19:22:08 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r346063 - head/sys/dev/acpica X-SVN-Group: head X-SVN-Commit-Author: jhb X-SVN-Commit-Paths: head/sys/dev/acpica X-SVN-Commit-Revision: 346063 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 4854C75237 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.97 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-0.99)[-0.994,0]; NEURAL_HAM_SHORT(-0.98)[-0.976,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-1.000,0] X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 09 Apr 2019 19:22:09 -0000 Author: jhb Date: Tue Apr 9 19:22:08 2019 New Revision: 346063 URL: https://svnweb.freebsd.org/changeset/base/346063 Log: Don't pre-reserve resources for CPU devices when they are set. CPUs can use shared (RF_SHAREABLE) resources for the I/O port used for entering and exiting C states. If this I/O port is included in an ACPI system resource device, then this happens to still work, but if the port wasn't part of a system resource device, only the first CPU could allocate the I/O port and use C states since resource_list_reserve() was always allocating the resource from nexus0 without RF_SHAREABLE. By avoiding the reservation, the flags from the bus_alloc_resource() in the CPU driver (which include RF_SHAREABLE) are honored. PR: 236513 Reported by: stockhausen@collogia.de Sleuthing by: avg Reviewed by: avg MFC after: 2 weeks Modified: head/sys/dev/acpica/acpi.c Modified: head/sys/dev/acpica/acpi.c ============================================================================== --- head/sys/dev/acpica/acpi.c Tue Apr 9 18:07:17 2019 (r346062) +++ head/sys/dev/acpica/acpi.c Tue Apr 9 19:22:08 2019 (r346063) @@ -1353,6 +1353,14 @@ acpi_set_resource(device_t dev, device_t child, int ty return (0); /* + * Don't reserve resources for CPU devices. Some of these + * resources need to be allocated as shareable, but reservations + * are always non-shareable. + */ + if (device_get_devclass(child) == devclass_find("cpu")) + return (0); + + /* * Reserve the resource. * * XXX: Ignores failure for now. Failure here is probably a