# HG changeset patch
# User Keir Fraser <keir.fraser@citrix.com>
# Date 1267131806 0
# Node ID 94535cc638355c1981c10626f720df97f7c99f55
# Parent  5db0a9bd6a500233194283206ee1cbd8cc52f47d
x86 numa: Fix post-boot ACPI SLIT accesses.

Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com>

diff -r 5db0a9bd6a50 -r 94535cc63835 xen/arch/x86/srat.c
--- a/xen/arch/x86/srat.c	Thu Feb 25 21:00:54 2010 +0000
+++ b/xen/arch/x86/srat.c	Thu Feb 25 21:03:26 2010 +0000
@@ -140,11 +140,22 @@ static __init int slit_valid(struct acpi
 /* Callback for SLIT parsing */
 void __init acpi_numa_slit_init(struct acpi_table_slit *slit)
 {
+#ifdef CONFIG_X86_64
+	unsigned long mfn;
 	if (!slit_valid(slit)) {
-		printk(KERN_INFO "ACPI: SLIT table looks invalid. Not used.\n");
+		printk(KERN_INFO "ACPI: SLIT table looks invalid. "
+		       "Not used.\n");
 		return;
 	}
-	acpi_slit = slit;
+	mfn = alloc_boot_pages(PFN_UP(slit->header.length), 1);
+	if (!mfn) {
+		printk(KERN_ERR "ACPI: Unable to allocate memory for "
+		       "saving ACPI SLIT numa information.\n");
+		return;
+	}
+	acpi_slit = mfn_to_virt(mfn);
+	memcpy(acpi_slit, slit, slit->header.length);
+#endif
 }
 
 /* Callback for Proximity Domain -> LAPIC mapping */