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Commit ce87b3d3 authored by Jeremy Fitzhardinge's avatar Jeremy Fitzhardinge Committed by Ingo Molnar
Browse files

xen64: get active_mm from the pda 



x86_64 stores the active_mm in the pda, so fetch it from there.

Signed-off-by: default avatarJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Stephen Tweedie <sct@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent f5d36de0

arch/x86/xen/mmu.c

+8 −1
Original line number Diff line number Diff line
@@ -805,8 +805,15 @@ void xen_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm) 
static void drop_other_mm_ref(void *info)

{

	struct mm_struct *mm = info;

	struct mm_struct *active_mm;



	if (__get_cpu_var(cpu_tlbstate).active_mm == mm)

#ifdef CONFIG_X86_64

	active_mm = read_pda(active_mm);

#else

	active_mm = __get_cpu_var(cpu_tlbstate).active_mm;

#endif



	if (active_mm == mm)

		leave_mm(smp_processor_id());



	/* If this cpu still has a stale cr3 reference, then make sure