[PATCH 1/2] making update_dirty_bit get called without disabling preempt

[PATCH 1/2] making update_dirty_bit get called without disabling preempt

[Izik Eidus]

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>From d11f64d00e5fd5fdcd6c82bf819653f392e5ad2b Mon Sep 17 00:00:00 2001
From: Izik Eidus <izike-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
Date: Mon, 15 Oct 2007 19:24:52 +0200
Subject: [PATCH] making update_dirty_bit get called without disabling preempt

Signed-off-by: Izik Eidus <izike-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
---
 drivers/kvm/paging_tmpl.h |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/kvm/paging_tmpl.h b/drivers/kvm/paging_tmpl.h
index 600b1cc..bd850c4 100644
--- a/drivers/kvm/paging_tmpl.h
+++ b/drivers/kvm/paging_tmpl.h
@@ -156,6 +156,8 @@ static int FNAME(walk_addr)(struct guest_walker *walker,
 		if (walker->level == PT_PAGE_TABLE_LEVEL) {
 			walker->gfn = (*ptep & PT_BASE_ADDR_MASK)
 				>> PAGE_SHIFT;
+			kunmap_atomic(walker->table, KM_USER0);
+			walker->table = NULL;
 			FNAME(update_dirty_bit)(vcpu, write_fault, ptep,
 						table_gfn);
 			break;
@@ -167,6 +169,8 @@ static int FNAME(walk_addr)(struct guest_walker *walker,
 			walker->gfn = (*ptep & PT_DIR_BASE_ADDR_MASK)
 				>> PAGE_SHIFT;
 			walker->gfn += PT_INDEX(addr, PT_PAGE_TABLE_LEVEL);
+			kunmap_atomic(walker->table, KM_USER0);
+			walker->table = NULL;
 			FNAME(update_dirty_bit)(vcpu, write_fault, ptep,
 						table_gfn);
 			break;
-- 
1.5.2.4


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