Commit-ID: 930ba49b2ce7b09a5eddc21385fd944ba6b4e829 Gitweb: https://git.kernel.org/tip/930ba49b2ce7b09a5eddc21385fd944ba6b4e829 Author: Juergen Gross <jgross@xxxxxxxx> AuthorDate: Fri, 8 Dec 2017 16:11:39 +0100 Committer: Ingo Molnar <mingo@xxxxxxxxxx> 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 <jgross@xxxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: boris.ostrovsky@xxxxxxxxxx Cc: corbet@xxxxxxx Cc: lenb@xxxxxxxxxx Cc: linux-acpi@xxxxxxxxxxxxxxx Cc: rjw@xxxxxxxxxxxxx Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx Link: http://lkml.kernel.org/r/20171208151139.30213-5-jgross@xxxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> --- 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; } /* -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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