Messages in this thread Patch in this message | | | From | Juergen Gross <> | Subject | [PATCH v3 4/4] x86/xen: supply rsdp address in boot params for pvh guests | Date | Fri, 8 Dec 2017 16:11:39 +0100 |
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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 <jgross@suse.com> --- 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 6e6430cb5e3f..e85e6dafe4bc 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; } /* -- 2.12.3
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