From: Wei Liu <wei.liu2@citrix.com>
Date: Wed, 30 Jan 2019 13:55:55 +0000 (+0000)
Subject: x86/pvh-boot: don't mandate validity of RSDP pointer
X-Git-Tag: xen-pt-allocation-1.1-base~39
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=f15ff4d50011d6860e0e577b147b9f8b6670661d;p=people%2Fliuw%2Fxen.git

x86/pvh-boot: don't mandate validity of RSDP pointer

RSDP is not mandatory according to PVH spec. Remove the BUG_ON. The
guest (xen) will fall back to scanning if necessary.

Reported-by: Andrew Cooper <andrew.cooper3@citrix.com>
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: Andrew Cooper <andrew.cooepr3@citrix.com>
Release-acked-by: Juergen Gross <jgross@suse.com>
---

diff --git a/xen/arch/x86/guest/pvh-boot.c b/xen/arch/x86/guest/pvh-boot.c
index 544775eeb4..ca8e156f7d 100644
--- a/xen/arch/x86/guest/pvh-boot.c
+++ b/xen/arch/x86/guest/pvh-boot.c
@@ -79,7 +79,6 @@ static void __init convert_pvh_info(multiboot_info_t **mbi,
         pvh_mbi_mods[i].string    = entry[i].cmdline_paddr;
     }
 
-    BUG_ON(!pvh_info->rsdp_paddr);
     rsdp_hint = pvh_info->rsdp_paddr;
 
     *mbi = &pvh_mbi;