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Commit 3fe0a63e authored by Jeremy Fitzhardinge's avatar Jeremy Fitzhardinge Committed by Ingo Molnar
Browse files

x86, 64-bit: __switch_to(): move arch_leave_lazy_cpu_mode() to the right place 



We must leave lazy mode before switching the %fs and %gs selectors.

Signed-off-by: default avatarEduardo Habkost <ehabkost@redhat.com>
Signed-off-by: default avatarJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: xen-devel <xen-devel@lists.xensource.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 0814e0ba

arch/x86/kernel/process_64.c

+9 −0
Original line number Diff line number Diff line
@@ -562,6 +562,15 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p) 


	load_TLS(next, cpu);



	/*

	 * Leave lazy mode, flushing any hypercalls made here.

	 * This must be done before restoring TLS segments so

	 * the GDT and LDT are properly updated, and must be

	 * done before math_state_restore, so the TS bit is up

	 * to date.

	 */

	arch_leave_lazy_cpu_mode();



	/* 

	 * Switch FS and GS.

	 */