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[Xen-devel] [PATCH] linux/x86-64: use xen_new_user_pt() rather than open

To: <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-devel] [PATCH] linux/x86-64: use xen_new_user_pt() rather than open-coding it
From: "Jan Beulich" <jbeulich@xxxxxxxxxx>
Date: 2008年8月08日 13:23:46 +0100
Delivery-date: 2008年8月08日 05:23:24 -0700
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As usual, written and tested on 2.6.26 and made apply to the 2.6.18
tree without further testing.
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
Index: head-2008年08月07日/drivers/xen/core/machine_reboot.c
===================================================================
--- head-2008年08月07日.orig/drivers/xen/core/machine_reboot.c 2008年08月07日 
12:44:36.000000000 +0200
+++ head-2008年08月07日/drivers/xen/core/machine_reboot.c 2008年08月07日 
13:59:00.000000000 +0200
@@ -184,14 +184,8 @@ static int take_machine_down(void *_susp
 * We do it here just in case, but there's no need if we are
 * in fast-suspend mode as that implies a new enough Xen.
 */
- if (!suspend->fast_suspend) {
- struct mmuext_op op;
- op.cmd = MMUEXT_NEW_USER_BASEPTR;
- op.arg1.mfn = pfn_to_mfn(__pa(__user_pgd(
- current->active_mm->pgd)) >> PAGE_SHIFT);
- if (HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF))
- BUG();
- }
+ if (!suspend->fast_suspend)
+ 
xen_new_user_pt(__pa(__user_pgd(current->active_mm->pgd));
 #endif
 }
 time_resume();
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