36 lines
1.3 KiB
Diff
36 lines
1.3 KiB
Diff
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changeset: 23906:7bf85c3fd9f0
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user: Olaf Hering <olaf@aepfle.de>
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date: Thu Oct 06 12:33:17 2011 +0100
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files: xen/arch/x86/mm/p2m.c
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description:
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xenpaging: remove confusing comment from p2m_mem_paging_populate
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Currently there is no way to avoid the double check of the p2mt
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because p2m_mem_paging_populate() is called from many places without
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the p2m_lock held. Upcoming changes will move the function into
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gfn_to_mfn(), so its interface could be changed and the extra
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p2m_lock/get_entry can be removed.
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Signed-off-by: Olaf Hering <olaf@aepfle.de>
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Acked-by: Tim Deegan <tim@xen.org>
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Committed-by: Tim Deegan <tim@xen.org>
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---
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xen/arch/x86/mm/p2m.c | 2 --
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1 file changed, 2 deletions(-)
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Index: xen-4.1.2-testing/xen/arch/x86/mm/p2m.c
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===================================================================
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--- xen-4.1.2-testing.orig/xen/arch/x86/mm/p2m.c
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+++ xen-4.1.2-testing/xen/arch/x86/mm/p2m.c
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@@ -2961,8 +2961,6 @@ void p2m_mem_paging_populate(struct p2m_
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req.type = MEM_EVENT_TYPE_PAGING;
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/* Fix p2m mapping */
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- /* XXX: It seems inefficient to have this here, as it's only needed
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- * in one case (ept guest accessing paging out page) */
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p2m_lock(p2m);
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p2m->get_entry(p2m, gfn, &p2mt, &a, p2m_query);
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if ( p2mt == p2m_ram_paged )
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