From: Izik Eidus <izike-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: kvm-devel <kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
Subject: [PATCH 1/2] making update_dirty_bit get called without disabling preempt
Date: Mon, 15 Oct 2007 23:23:02 +0200 [thread overview]
Message-ID: <4713DA36.80205@qumranet.com> (raw)
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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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