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making update_dirty_bit get called without disabling preempt

PATCH In review Izik Eidus 1 participant 1 message Oct 15, 2007 KVM

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Izik Eidus

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PATCH 1/2 making update_dirty_bit get called without disabling preempt

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From d11f64d00e5fd5fdcd6c82bf819653f392e5ad2b Mon Sep 17 00:00:00 2001

From: Izik Eidus <izike-atKUWr5tajBWk0Htik3J/[email protected]>
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/[email protected]>
---
 drivers/kvm/paging_tmpl.h |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
drivers/kvm/paging_tmpl.h +4 -0
index 600b1cc..bd850c4 100644
@@ -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;
Signature · 1 line
1.5.2.4

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