From: Dulloor <dulloor@gmail.com>
To: xen-devel@lists.xensource.com
Subject: [PATCH 11/11] [PVOPS] numa-guest-support elfnote
Date: Sun, 4 Apr 2010 15:30:47 -0400 [thread overview]
Message-ID: <s2r940bcfd21004041230za828ba5bgdb734d3cc8ea70da@mail.gmail.com> (raw)
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Add numa-guest-support elfnote, if compiled with CONFIG_XEN_NUMA_GUEST
-dulloor
Signed-off-by: Dulloor Rao <dulloor@gatech.edu>
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diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S
index 1a5ff24..61b0460 100644
--- a/arch/x86/xen/xen-head.S
+++ b/arch/x86/xen/xen-head.S
@@ -44,6 +44,9 @@ ENTRY(hypercall_page)
ELFNOTE(Xen, XEN_ELFNOTE_ENTRY, _ASM_PTR startup_xen)
ELFNOTE(Xen, XEN_ELFNOTE_HYPERCALL_PAGE, _ASM_PTR hypercall_page)
ELFNOTE(Xen, XEN_ELFNOTE_FEATURES, .asciz "!writable_page_tables|pae_pgdir_above_4gb")
+#ifdef CONFIG_XEN_NUMA_GUEST
+ ELFNOTE(Xen, XEN_ELFNOTE_FEATURES, .asciz "numa_guest_support")
+#endif
ELFNOTE(Xen, XEN_ELFNOTE_PAE_MODE, .asciz "yes")
ELFNOTE(Xen, XEN_ELFNOTE_LOADER, .asciz "generic")
ELFNOTE(Xen, XEN_ELFNOTE_L1_MFN_VALID,
diff --git a/include/xen/interface/features.h b/include/xen/interface/features.h
index f51b641..6578d76 100644
--- a/include/xen/interface/features.h
+++ b/include/xen/interface/features.h
@@ -41,6 +41,21 @@
/* x86: Does this Xen host support the MMU_PT_UPDATE_PRESERVE_AD hypercall? */
#define XENFEAT_mmu_pt_update_preserve_ad 5
+/* x86: Does this Xen host support the MMU_{CLEAR,COPY}_PAGE hypercall? */
+#define XENFEAT_highmem_assist 6
+
+/*
+ * If set, GNTTABOP_map_grant_ref honors flags to be placed into guest kernel
+ * available pte bits.
+ */
+#define XENFEAT_gnttab_map_avail_bits 7
+
+/*
+ * If set, the guest is made aware of the underlying NUMA characteristics
+ * (numa guest enlightenment)
+ */
+#define XENFEAT_numa_guest_support 8
+
#define XENFEAT_NR_SUBMAPS 1
#endif /* __XEN_PUBLIC_FEATURES_H__ */
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