Commit-ID: 930ba49b2ce7b09a5eddc21385fd944ba6b4e829 Gitweb: https://git.kernel.org/tip/930ba49b2ce7b09a5eddc21385fd944ba6b4e829 Author: Juergen Gross <jgr...@suse.com> AuthorDate: Fri, 8 Dec 2017 16:11:39 +0100 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Mon, 11 Dec 2017 15:14:21 +0100
x86/xen: Supply RSDP address in boot params for PVH guests 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. Signed-off-by: Juergen Gross <jgr...@suse.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Thomas Gleixner <t...@linutronix.de> Cc: boris.ostrov...@oracle.com Cc: cor...@lwn.net Cc: l...@kernel.org Cc: linux-a...@vger.kernel.org Cc: r...@rjwysocki.net Cc: xen-de...@lists.xenproject.org Link: http://lkml.kernel.org/r/20171208151139.30213-5-jgr...@suse.com Signed-off-by: Ingo Molnar <mi...@kernel.org> --- 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 6e6430c..e85e6da 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 = (2 << 8) | 12; + pvh_bootparams.hdr.version = (2 << 8) | 14; pvh_bootparams.hdr.type_of_loader = (9 << 4) | 0; /* Xen loader */ + + pvh_bootparams.hdr.acpi_rsdp_addr = pvh_start_info.rsdp_paddr; } /*
