* [Qemu-devel] [6755] Fix NX bit
@ 2009-03-07 20:57 Blue Swirl
0 siblings, 0 replies; only message in thread
From: Blue Swirl @ 2009-03-07 20:57 UTC (permalink / raw)
To: qemu-devel
Revision: 6755
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6755
Author: blueswir1
Date: 2009-03-07 20:57:01 +0000 (Sat, 07 Mar 2009)
Log Message:
-----------
Fix NX bit
ctx->nx only got ORed, but never reset. So when one page in the
lifetime of the VM was ever NX, all later pages were too.
Signed-off-by: Alexander Graf <alex@csgraf.de>
Modified Paths:
--------------
trunk/target-ppc/helper.c
Modified: trunk/target-ppc/helper.c
===================================================================
--- trunk/target-ppc/helper.c 2009-03-07 20:56:21 UTC (rev 6754)
+++ trunk/target-ppc/helper.c 2009-03-07 20:57:01 UTC (rev 6755)
@@ -226,7 +226,7 @@
ptem = pte0 & PTE64_PTEM_MASK;
mmask = PTE64_CHECK_MASK;
pp = (pte1 & 0x00000003) | ((pte1 >> 61) & 0x00000004);
- ctx->nx |= (pte1 >> 2) & 1; /* No execute bit */
+ ctx->nx = (pte1 >> 2) & 1; /* No execute bit */
ctx->nx |= (pte1 >> 3) & 1; /* Guarded bit */
} else
#endif
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2009-03-07 20:57 [Qemu-devel] [6755] Fix NX bit Blue Swirl
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