From mboxrd@z Thu Jan 1 00:00:00 1970 From: Juergen Gross Subject: [PATCH v2 3/3] x86/xen: supply rsdp address in boot params for pvh guests Date: Thu, 7 Dec 2017 13:28:21 +0100 Message-ID: <20171207122821.30158-4-jgross@suse.com> References: <20171207122821.30158-1-jgross@suse.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20171207122821.30158-1-jgross@suse.com> Sender: linux-kernel-owner@vger.kernel.org To: linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org, x86@kernel.org Cc: boris.ostrovsky@oracle.com, hpa@zytor.com, tglx@linutronix.de, mingo@redhat.com, corbet@lwn.net, rjw@rjwysocki.net, lenb@kernel.org, linux-acpi@vger.kernel.org, Juergen Gross List-Id: linux-acpi@vger.kernel.org When booted via the special PVH entry save the RSDP address set in the boot information block in struct boot_params. This will enable Xen to locate the RSDP at an arbitrary address. Set the boot loader version to 2.14 (0x020e) replacing the wrong 0x0212 which should have been 0x020c. Signed-off-by: Juergen Gross --- V2: set bootloader version to 2.14 (Roger Pau Monné) --- arch/x86/xen/enlighten_pvh.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/x86/xen/enlighten_pvh.c b/arch/x86/xen/enlighten_pvh.c index 436c4f003e17..036e3a5f284a 100644 --- a/arch/x86/xen/enlighten_pvh.c +++ b/arch/x86/xen/enlighten_pvh.c @@ -68,9 +68,12 @@ static void __init init_pvh_bootparams(void) * * Version 2.12 supports Xen entry point but we will use default x86/PC * environment (i.e. hardware_subarch 0). + * The RSDP address is available from version 2.14 on. */ - pvh_bootparams.hdr.version = 0x212; + pvh_bootparams.hdr.version = 0x20e; pvh_bootparams.hdr.type_of_loader = (9 << 4) | 0; /* Xen loader */ + + pvh_bootparams.hdr.acpi_rsdp_addr = pvh_start_info.rsdp_paddr; } /* -- 2.12.3