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[Xen-ia64-devel] [PATCH] Allocate frame table/mpt table at mfn=0
| To: | xen-ia64-devel@xxxxxxxxxxxxxxxxxxx |
|---|---|
| Subject: | [Xen-ia64-devel] [PATCH] Allocate frame table/mpt table at mfn=0 |
| From: | Isaku Yamahata <yamahata@xxxxxxxxxxxxx> |
| Date: | Mon, 4 Dec 2006 11:33:53 +0900 |
| Delivery-date: | Sun, 03 Dec 2006 18:33:47 -0800 |
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Allocate frame table/mpt table at mfn=0 even when memory isn't assigned at mfn=0 as work around of transate_domain_pte(). It returns mfn=0 when the machine page isn't present as a work around for memory mapped I/O where no device is assigned. Xen might access page_info of mfn=0, so it must be gurantted that it exists. Otherwise xen panics with tlb miss fault in xen virtual address area. Once transate_domain_pte() is fixed correctly, this will be removed. -- yamahata
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