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Subject[PATCH v2 3/3] x86/xen: supply rsdp address in boot params for pvh guests
Date
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 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
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