1.1 --- a/linux-2.6-xen-sparse/arch/i386/kernel/setup-xen.c	Thu Feb 15 13:51:25 2007 +0000
     1.2 +++ b/linux-2.6-xen-sparse/arch/i386/kernel/setup-xen.c	Thu Feb 15 14:05:58 2007 +0000
     1.3 @@ -1034,8 +1034,16 @@ e820_all_mapped(unsigned long s, unsigne
     1.4  	u64 start = s;
     1.5  	u64 end = e;
     1.6  	int i;
     1.7 +
     1.8 +#ifndef CONFIG_XEN
     1.9  	for (i = 0; i < e820.nr_map; i++) {
    1.10  		struct e820entry *ei = &e820.map[i];
    1.11 +#else
    1.12 +	if (!is_initial_xendomain())
    1.13 +		return 0;
    1.14 +	for (i = 0; i < machine_e820.nr_map; ++i) {
    1.15 +		const struct e820entry *ei = &machine_e820.map[i];
    1.16 +#endif
    1.17  		if (type && ei->type != type)
    1.18  			continue;
    1.19  		/* is the region (part) in overlap with the current region ?*/
    1.20 @@ -1505,9 +1513,6 @@ e820_setup_gap(struct e820entry *e820, i
    1.21   */
    1.22  static int __init request_standard_resources(void)
    1.23  {
    1.24 -#ifdef CONFIG_XEN
    1.25 -	struct xen_memory_map memmap;
    1.26 -#endif
    1.27  	int	      i;
    1.28  
    1.29  	/* Nothing to do if not running in dom0. */
    1.30 @@ -1516,13 +1521,6 @@ static int __init request_standard_resou
    1.31  
    1.32  	printk("Setting up standard PCI resources\n");
    1.33  #ifdef CONFIG_XEN
    1.34 -	memmap.nr_entries = E820MAX;
    1.35 -	set_xen_guest_handle(memmap.buffer, machine_e820.map);
    1.36 -
    1.37 -	if (HYPERVISOR_memory_op(XENMEM_machine_memory_map, &memmap))
    1.38 -		BUG();
    1.39 -	machine_e820.nr_map = memmap.nr_entries;
    1.40 -
    1.41  	legacy_init_iomem_resources(machine_e820.map, machine_e820.nr_map,
    1.42  				    &code_resource, &data_resource);
    1.43  #else
    1.44 @@ -1546,12 +1544,22 @@ subsys_initcall(request_standard_resourc
    1.45  
    1.46  static void __init register_memory(void)
    1.47  {
    1.48 +#ifdef CONFIG_XEN
    1.49 +	if (is_initial_xendomain()) {
    1.50 +		struct xen_memory_map memmap;
    1.51  
    1.52 -#ifdef CONFIG_XEN
    1.53 -	e820_setup_gap(machine_e820.map, machine_e820.nr_map);
    1.54 -#else
    1.55 -	e820_setup_gap(e820.map, e820.nr_map);
    1.56 +		memmap.nr_entries = E820MAX;
    1.57 +		set_xen_guest_handle(memmap.buffer, machine_e820.map);
    1.58 +
    1.59 +		if (HYPERVISOR_memory_op(XENMEM_machine_memory_map, &memmap))
    1.60 +			BUG();
    1.61 +
    1.62 +		machine_e820.nr_map = memmap.nr_entries;
    1.63 +		e820_setup_gap(machine_e820.map, machine_e820.nr_map);
    1.64 +	}
    1.65 +	else
    1.66  #endif
    1.67 +		e820_setup_gap(e820.map, e820.nr_map);
    1.68  }
    1.69  
    1.70  #ifdef CONFIG_MCA

     2.1 --- a/linux-2.6-xen-sparse/arch/x86_64/kernel/e820-xen.c	Thu Feb 15 13:51:25 2007 +0000
     2.2 +++ b/linux-2.6-xen-sparse/arch/x86_64/kernel/e820-xen.c	Thu Feb 15 14:05:58 2007 +0000
     2.3 @@ -127,8 +127,19 @@ e820_any_mapped(unsigned long start, uns
     2.4  int __init e820_all_mapped(unsigned long start, unsigned long end, unsigned type)
     2.5  {
     2.6  	int i;
     2.7 +
     2.8 +#ifndef CONFIG_XEN
     2.9  	for (i = 0; i < e820.nr_map; i++) {
    2.10  		struct e820entry *ei = &e820.map[i];
    2.11 +#else
    2.12 +	extern struct e820map machine_e820;
    2.13 +
    2.14 +	if (!is_initial_xendomain())
    2.15 +		return 0;
    2.16 +	for (i = 0; i < machine_e820.nr_map; i++) {
    2.17 +		const struct e820entry *ei = &machine_e820.map[i];
    2.18 +#endif
    2.19 +
    2.20  		if (type && ei->type != type)
    2.21  			continue;
    2.22  		/* is the region (part) in overlap with the current region ?*/

     3.1 --- a/linux-2.6-xen-sparse/arch/x86_64/kernel/setup-xen.c	Thu Feb 15 13:51:25 2007 +0000
     3.2 +++ b/linux-2.6-xen-sparse/arch/x86_64/kernel/setup-xen.c	Thu Feb 15 14:05:58 2007 +0000
     3.3 @@ -585,8 +585,6 @@ static void discover_ebda(void)
     3.4  void __init setup_arch(char **cmdline_p)
     3.5  {
     3.6  #ifdef CONFIG_XEN
     3.7 -	struct xen_memory_map memmap;
     3.8 -
     3.9  	/* Register a call for panic conditions. */
    3.10  	atomic_notifier_chain_register(&panic_notifier_list, &xen_panic_block);
    3.11  
    3.12 @@ -895,6 +893,8 @@ void __init setup_arch(char **cmdline_p)
    3.13  	probe_roms();
    3.14  #ifdef CONFIG_XEN
    3.15  	if (is_initial_xendomain()) {
    3.16 +		struct xen_memory_map memmap;
    3.17 +
    3.18  		memmap.nr_entries = E820MAX;
    3.19  		set_xen_guest_handle(memmap.buffer, machine_e820.map);
    3.20