This patch fix kvm-unit-tests hanging and incorrect PT_ACCESSED_MASK
bit set in the case of SMEP fault.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
---
arch/x86/kvm/paging_tmpl.h | 22 +-
1 files changed, 13 insertions(+), 9 deletions(-)
diff --git
-Original Message-
From: kvm-ow...@vger.kernel.org [mailto:kvm-ow...@vger.kernel.org] On
Behalf Of Xiao Guangrong
Sent: Friday, July 01, 2011 4:06 PM
To: Yang, Wei Y
Cc: a...@redhat.com; kvm@vger.kernel.org
Subject: Re: [PATCH kvm-unit-tests v2] access: check SMEP on prefetch pte
+void set_cr4_smep(int smep)
+{
+unsigned long cr4 = read_cr4();
+
+cr4 = ~CR4_SMEP_MASK;
+if (smep)
+ cr4 |= CR4_SMEP_MASK;
+write_cr4(cr4);
+}
+
It can work if the box does not support SMEP?
It will report unhandled exception 13 in access.out which
we
This patch exposes DRNG feature to KVM guests.
The RDRAND instruction can provide software with sequences of
random numbers generated from white noise.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
---
arch/x86/kvm/x86.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git
This patch removes SMEP bit from CR4_RESERVED_BITS.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/include/asm/kvm_host.h |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff
This patch masks CPUID leaf 7 ebx against host capability word9.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/kvm/x86.c | 20 +++-
1 files changed, 19 insertions(+), 1
This patchset enables a new CPU feature SMEP (Supervisor Mode Execution
Protection) in KVM. SMEP prevents kernel from executing code in application.
Updated Intel SDM describes this CPU feature. The document will be published
soon.
This patchset is based on Fenghua's SMEP patch series, as
This patch adds SMEP handling when setting CR4.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/kvm/x86.c | 15 +--
1 files changed, 13 insertions(+), 2 deletions(-)
diff
This patch adds instruction fetch checking when walking guest page table.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/kvm/paging_tmpl.h |9 -
1 files changed, 8
This patchset enables a new CPU feature SMEP (Supervisor Mode Execution
Protection) in KVM. SMEP prevents kernel from executing code in application.
Updated Intel SDM describes this CPU feature. The document will be published
soon.
This patchset is based on Fenghua's SMEP patch series, as
This patch removes SMEP bit from CR4_RESERVED_BITS.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/include/asm/kvm_host.h |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff
This patch adds SMEP handling when setting CR4.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/kvm/x86.c | 15 +--
1 files changed, 13 insertions(+), 2 deletions(-)
diff
This patch masks CPUID leaf 7 ebx against host capability word9.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/kvm/x86.c | 21 -
1 files changed, 20 insertions(+), 1
This patch adds instruction fetch checking when walking guest page table.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/kvm/paging_tmpl.h |9 -
1 files changed, 8
This patchset enables a new CPU feature SMEP (Supervisor Mode Execution
Protection) in QEMU-KVM. SMEP prevents kernel from executing code in
application.
Updated Intel SDM describes this CPU feature. The document will be published
soon.
SMEP is identified by CPUID leaf 7 EBX[7], which is 0
This patch masks CPUID leaf 7 ebx against host capability word9.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/kvm/x86.c | 15 ++-
1 files changed, 14 insertions(+), 1
This patch adds SMEP handling when setting CR4.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/kvm/x86.c | 15 +--
1 files changed, 13 insertions(+), 2 deletions(-)
diff --git
This patch adds instruction fetch checking when walking guest page table.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/kvm/paging_tmpl.h |9 -
1 files changed, 8 insertions(+),
This patchset enables a new CPU feature SMEP (Supervisor Mode Execution
Protection) in QEMU-KVM. SMEP prevents kernel from executing code in
application.
Updated Intel SDM describes this CPU feature. The document will be published
soon.
SMEP is identified by CPUID leaf 7 EBX[7], which is 0
This patchset enables a new CPU feature SMEP (Supervisor Mode Execution
Protection) in KVM. SMEP prevents kernel from executing code in application.
Updated Intel SDM describes this CPU feature. The document will be
published soon.
This patchset is based on Fenghua's SMEP patch series, as
This patch removes SMEP bit from CR4_RESERVED_BITS.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/include/asm/kvm_host.h |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff
This patchset enables a new CPU feature SMEP (Supervisor Mode Execution
Protection) in KVM. SMEP prevents kernel from executing code in application.
Updated Intel SDM describes this CPU feature. The document will be
published soon.
This patchset is based on Fenghua's SMEP patch series, as
This patch adds SMEP bit to CR4_RESERVED_BITS.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/include/asm/kvm_host.h |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git
This patch masks CPUID leaf 7 ebx against host capability word9.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/kvm/x86.c |7 ++-
1 files changed, 6 insertions(+), 1 deletions(-)
This patch adds SMEP handling when setting CR4.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/kvm/x86.c | 15 +--
1 files changed, 13 insertions(+), 2 deletions(-)
diff
This patchset enables a new CPU feature SMEP (Supervisor Mode Execution
Protection) in QEMU-KVM. SMEP prevents kernel from executing code in
application.
Updated Intel SDM describes this CPU feature. The document will be published
soon.
SMEP is identified by CPUID leaf 7 EBX[7], which is 0
This patch adds instruction fetch checking when walking guest page table.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/kvm/paging_tmpl.h |9 -
1 files changed, 8 insertions(+),
This patchset enables a new CPU feature SMEP (Supervisor Mode Execution
Protection) in KVM. SMEP prevents kernel from executing code in application.
Updated Intel SDM describes this CPU feature. The document will be
published soon.
This patchset is based on Fenghua's SMEP patch series, as
This patch removes SMEP bit from CR4_RESERVED_BITS.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/include/asm/kvm_host.h |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff
This patch adds SMEP handling when setting CR4.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/kvm/x86.c | 15 +--
1 files changed, 13 insertions(+), 2 deletions(-)
diff
This patch masks CPUID leaf 7 ebx against host capability word9.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/kvm/x86.c |7 ++-
1 files changed, 6 insertions(+), 1 deletions(-)
This patch adds instruction fetch checking when walking guest page table.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/kvm/paging_tmpl.h |9 -
1 files changed, 8
This patchset enables a new CPU feature SMEP (Supervisor Mode Execution
Protection) in QEMU-KVM. SMEP prevents kernel from executing code in
application.
Updated Intel SDM describes this CPU feature. The document will be published
soon.
SMEP is identified by CPUID leaf 7 EBX[7], which is 0
This patchset enables a new CPU feature SMEP (Supervisor Mode Execution
Protection) in KVM. SMEP prevents kernel from executing code in application.
Updated Intel SDM describes this CPU feature. The document will be published
soon.
This patchset is based on Fenghua's SMEP patch series, as
This patchset enables a new CPU feature SMEP (Supervisor Mode Execution
Protection) in QEMU-KVM. SMEP prevents kernel from executing code in
application.
Updated Intel SDM describes this CPU feature. The document will be published
soon.
SMEP is identified by CPUID leaf 7 EBX[7], which is 0
This patch matches with [PATCH v2] Enable CPU SMEP feature support for
QEMU-KVM, no changes since v1.
Enable newly documented SMEP (Supervisor Mode Execution Protection) CPU
feature in KVM module.
Intel new CPU supports SMEP (Supervisor Mode Execution Protection). SMEP
prevents kernel
This patch matches with [PATCH v2] Enable CPU SMEP feature support for
QEMU-KVM, no changes since v1.
Enable newly documented SMEP (Supervisor Mode Execution Protection) CPU feature
in KVM module.
Intel new CPU supports SMEP (Supervisor Mode Execution Protection). SMEP
prevents kernel from
Enable newly documented SMEP (Supervisor Mode Execution Protection) CPU
feature for QEMU-KVM.
Intel new CPU supports SMEP (Supervisor Mode Execution Protection). SMEP
prevents kernel from executing code in application. Updated Intel SDM describes
this CPU feature. The document will be published
Enable newly documented SMEP (Supervisor Mode Execution Protection) CPU
feature in KVM module.
Intel new CPU supports SMEP (Supervisor Mode Execution Protection). SMEP
prevents kernel from executing code in application. Updated Intel SDM describes
this CPU feature. The document will be published
Enable newly documented SMEP (Supervisor Mode Execution Protection) CPU feature
for QEMU-KVM.
Intel new CPU supports SMEP (Supervisor Mode Execution Protection). SMEP
prevents kernel from executing code in application. Updated Intel SDM describes
this CPU feature. The document will be
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