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Commit af7ae3b9 authored by Jeremy Fitzhardinge's avatar Jeremy Fitzhardinge Committed by Ingo Molnar
Browse files

xen: allow compilation with non-flat memory 



There's no real reason we can't support sparsemem/discontigmem, so do so.
This is mostly useful to support hotplug memory.

Signed-off-by: default avatarJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent b77797fb

arch/x86/xen/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -6,7 +6,7 @@ config XEN 
	bool "Xen guest support"

	select PARAVIRT

	depends on X86_32

	depends on X86_CMPXCHG && X86_TSC && !NEED_MULTIPLE_NODES && !(X86_VISWS || X86_VOYAGER)

	depends on X86_CMPXCHG && X86_TSC && !(X86_VISWS || X86_VOYAGER)

	help

	  This is the Linux Xen port.  Enabling this will allow the

	  kernel to boot in a paravirtualized environment under the

arch/x86/xen/enlighten.c

+2 −0
Original line number Diff line number Diff line
@@ -669,7 +669,9 @@ static void xen_write_cr3(unsigned long cr3) 
   everything is pinned. */

static __init void xen_alloc_pte_init(struct mm_struct *mm, u32 pfn)

{

#ifdef CONFIG_FLATMEM

	BUG_ON(mem_map);	/* should only be used early */

#endif

	make_lowmem_page_readonly(__va(PFN_PHYS(pfn)));

}