Re: [Xen-devel] Current staging crashes on boot on an AMD EPYC 7251

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

On Fri, Sep 21, 2018 at 12:45:18PM +0300, Razvan Cojocaru wrote:
> Hello,
> 
> While doing my best to make sure what I understand to be George's
> proposed changes for the altp2m series I've tried to boot Xen staging on
> an AMD host, but it crashes in an unrelated place (I've tested this by
> stashing my changes and booting a "vanilla" staging):

Can you apply the following debug patch and paste the full boot log?

Thanks, Roger.
---8<---
diff --git a/xen/arch/x86/mm.c b/xen/arch/x86/mm.c
index 955ff0bd78..3648680d57 100644
--- a/xen/arch/x86/mm.c
+++ b/xen/arch/x86/mm.c
@@ -465,6 +465,8 @@ unsigned int page_get_ram_type(mfn_t mfn)
             break;
 
         default:
+printk("[%#lx, %#lx) type: %u\n", e820.map[i].addr,
+       e820.map[i].addr + e820.map[i].size, e820.map[i].type);
             ASSERT_UNREACHABLE();
         }
     }


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