From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-3946214-1519035423-2-15282329461644645026 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.001, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES enroca, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='com', MailFrom='org' X-Spam-charsets: X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1519035422; b=YywY6EO9Pe3RYuc+wAXoYrdtj36/jC4v0vpbxjXPu5s40De mF6eR79hjiNTIwIkDse/Wriq/VVe8mCU8lx4Gf3TdellOzW4mBd929/N8+yJsWlj PZcN8D/QtTSboMdgO1jsF6SAUtx0G5daujgu2J3uF9KxcvYH+efrXGYewuqFhSjc qE3bfekWLfQhvyulyY9H94PK8XczcN7QBRLYgLHAXoog62zZl+zB8Naz5vyutj8b E2pJeV7IKf1TFbl/lm7Ou5rbP9bQ6aTUAEt6/xQ0FwcD+rny50hD7eJdmrPW9vHD LfJg6ZbT5gDlrIN2FV50ABYgL67KI6y2H4QIEtQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:sender:list-id; s=arctest; t=1519035422; bh=LXbJQtFJLFIx81LzdjQcK/4AX+vmUwbGmOln7nj7uA0=; b=VPgaBCG7QJpM dsvoyJz/ALt+bMKDYRqk4GeCiZUMma47zxSM3ejhUGYak2g/fLvfFXC7IiknENxW 5qNQMEL8geq7Kc0DM619d92jXJ3cPqVpvm+BKiyaT9Rx7smBUIzi8kTLmMmxAPeJ gvv45XSHGCO9fFmB48hO5l39LDpWtvAKqU3UxHWLeBxjbBXzDxReLhbiE/WJ0vnd 3MrovD2YstafIXfWtgUjOufFx2MtAQONZN2aFFWTcTC3gqMJdb2ZmZN+svVDxSVS Cu8fe5ysZiafV0GdsgrfDX7DC1FXex6FWt1bMuvAItnCOF5QyE0lrwarYVeReIt2 OYwxdOQy0w== ARC-Authentication-Results: i=1; mx6.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=suse.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=suse.com header.result=pass header_is_org_domain=yes Authentication-Results: mx6.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=suse.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=suse.com header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752492AbeBSKQi (ORCPT ); Mon, 19 Feb 2018 05:16:38 -0500 Received: from mx2.suse.de ([195.135.220.15]:53123 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752372AbeBSKOj (ORCPT ); Mon, 19 Feb 2018 05:14:39 -0500 From: Juergen Gross To: linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org, linux-acpi@vger.kernel.org, x86@kernel.org Cc: rafael.j.wysocki@intel.com, lenb@kernel.org, boris.ostrovsky@oracle.com, hpa@zytor.com, tglx@linutronix.de, mingo@redhat.com, Juergen Gross , stable@vger.kernel.org Subject: [PATCH v3 1/3] acpi: introduce acpi_arch_get_root_pointer() for getting rsdp address Date: Mon, 19 Feb 2018 11:09:04 +0100 Message-Id: <20180219100906.14265-2-jgross@suse.com> X-Mailer: git-send-email 2.13.6 In-Reply-To: <20180219100906.14265-1-jgross@suse.com> References: <20180219100906.14265-1-jgross@suse.com> Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: Add an architecture specific function to get the address of the RSDP table. Per default it will just return 0 indicating falling back to the current mechanism. Cc: # 4.11 Signed-off-by: Juergen Gross --- drivers/acpi/osl.c | 5 ++++- include/linux/acpi.h | 7 +++++++ 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index 3bb46cb24a99..ff812243bac3 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -189,12 +189,15 @@ early_param("acpi_rsdp", setup_acpi_rsdp); acpi_physical_address __init acpi_os_get_root_pointer(void) { - acpi_physical_address pa = 0; + acpi_physical_address pa; #ifdef CONFIG_KEXEC if (acpi_rsdp) return acpi_rsdp; #endif + pa = acpi_arch_get_root_pointer(); + if (pa) + return pa; if (efi_enabled(EFI_CONFIG_TABLES)) { if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 968173ec2726..15bfb15c2fa5 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -623,6 +623,13 @@ bool acpi_gtdt_c3stop(int type); int acpi_arch_timer_mem_init(struct arch_timer_mem *timer_mem, int *timer_count); #endif +#ifndef ACPI_HAVE_ARCH_GET_ROOT_POINTER +static inline u64 acpi_arch_get_root_pointer(void) +{ + return 0; +} +#endif + #else /* !CONFIG_ACPI */ #define acpi_disabled 1 -- 2.13.6