* [PATCH 05/12] Nested Virtualization: CRn & paged real mode
@ 2010-12-20 16:05 Christoph Egger
0 siblings, 0 replies; 2+ messages in thread
From: Christoph Egger @ 2010-12-20 16:05 UTC (permalink / raw)
To: xen-devel
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--
---to satisfy European Law for business letters:
Advanced Micro Devices GmbH
Einsteinring 24, 85609 Dornach b. Muenchen
Geschaeftsfuehrer: Alberto Bozzo, Andrew Bowd
Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen
Registergericht Muenchen, HRB Nr. 43632
[-- Attachment #2: xen_nh05_cr.diff --]
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# HG changeset patch
# User cegger
# Date 1292839434 -3600
Allow paged real mode during vmrun emulation.
Emulate cr0 and cr4 when guest does not intercept them.
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
diff -r a9465de5a794 -r 6e4fc6e272a7 xen/arch/x86/hvm/hvm.c
--- a/xen/arch/x86/hvm/hvm.c
+++ b/xen/arch/x86/hvm/hvm.c
@@ -55,6 +55,7 @@
#include <asm/hvm/support.h>
#include <asm/hvm/cacheattr.h>
#include <asm/hvm/trace.h>
+#include <asm/hvm/nestedhvm.h>
#include <asm/mtrr.h>
#include <asm/apic.h>
#include <public/sched.h>
@@ -1255,7 +1256,8 @@ int hvm_set_cr0(unsigned long value)
/* ET is reserved and should be always be 1. */
value |= X86_CR0_ET;
- if ( (value & (X86_CR0_PE | X86_CR0_PG)) == X86_CR0_PG )
+ if ( !nestedhvm_vmswitch_in_progress(v) &&
+ (value & (X86_CR0_PE | X86_CR0_PG)) == X86_CR0_PG )
goto gpf;
if ( (value & X86_CR0_PG) && !(old_value & X86_CR0_PG) )
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Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
^ permalink raw reply [flat|nested] 2+ messages in thread
* [PATCH 05/12] Nested Virtualization: CRn & paged real mode
@ 2011-03-09 14:23 Christoph Egger
0 siblings, 0 replies; 2+ messages in thread
From: Christoph Egger @ 2011-03-09 14:23 UTC (permalink / raw)
To: xen-devel
[-- Attachment #1: Type: text/plain, Size: 264 bytes --]
--
---to satisfy European Law for business letters:
Advanced Micro Devices GmbH
Einsteinring 24, 85609 Dornach b. Muenchen
Geschaeftsfuehrer: Alberto Bozzo, Andrew Bowd
Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen
Registergericht Muenchen, HRB Nr. 43632
[-- Attachment #2: xen_nh05_cr.diff --]
[-- Type: text/x-diff, Size: 946 bytes --]
# HG changeset patch
# User cegger
# Date 1298892109 -3600
Allow paged real mode during vmrun emulation.
Emulate cr0 and cr4 when guest does not intercept them.
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
diff -r 4c51c9128e19 -r 71c7d02392aa xen/arch/x86/hvm/hvm.c
--- a/xen/arch/x86/hvm/hvm.c
+++ b/xen/arch/x86/hvm/hvm.c
@@ -55,6 +55,7 @@
#include <asm/hvm/support.h>
#include <asm/hvm/cacheattr.h>
#include <asm/hvm/trace.h>
+#include <asm/hvm/nestedhvm.h>
#include <asm/mtrr.h>
#include <asm/apic.h>
#include <public/sched.h>
@@ -1319,7 +1320,8 @@ int hvm_set_cr0(unsigned long value)
/* ET is reserved and should be always be 1. */
value |= X86_CR0_ET;
- if ( (value & (X86_CR0_PE | X86_CR0_PG)) == X86_CR0_PG )
+ if ( !nestedhvm_vmswitch_in_progress(v) &&
+ (value & (X86_CR0_PE | X86_CR0_PG)) == X86_CR0_PG )
goto gpf;
if ( (value & X86_CR0_PG) && !(old_value & X86_CR0_PG) )
[-- Attachment #3: Type: text/plain, Size: 138 bytes --]
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
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