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[Xen-devel] [PATCH 13/17] xenpaging: page only pagetables for debugging
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
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| Subject: | [Xen-devel] [PATCH 13/17] xenpaging: page only pagetables for debugging |
| From: | Olaf Hering <olaf@xxxxxxxxx> |
| Date: | Mon, 06 Dec 2010 21:59:20 +0100 |
| Delivery-date: | Mon, 06 Dec 2010 13:21:51 -0800 |
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Page only page-tables with a Linux guest, needed to run __hvm_copy code paths
---
tools/xenpaging/policy_default.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
--- xen-unstable.hg-4.1.22459.orig/tools/xenpaging/policy_default.c
+++ xen-unstable.hg-4.1.22459/tools/xenpaging/policy_default.c
@@ -26,7 +26,7 @@
#include "policy.h"
-#define MRU_SIZE (1024 * 16)
+#define MRU_SIZE (1 << 4)
static unsigned long mru[MRU_SIZE];
@@ -60,8 +60,11 @@ int policy_init(xenpaging_t *paging)
for ( i = 0; i < MRU_SIZE; i++ )
mru[i] = INVALID_MFN;
- /* Don't page out page 0 */
- set_bit(0, bitmap);
+ /* Leave a hole for pagetables */
+ for ( i = 0; i < max_pages; i++ )
+ set_bit(i, bitmap);
+ for ( i = 0x1800; i < 0x18ff; i++ )
+ clear_bit(i, bitmap);
out:
return rc;
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