[Devel] [PATCH RHEL7 COMMIT] ms/kvm: add hyper-v crash msrs values

[Konstantin Khorenko]

The commit is pushed to "branch-rh7-3.10.0-229.7.2.vz7.8.x-ovz" and will appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-229.7.2.vz7.8.2
------>
commit a838d5278c5d320c75333abb5cefe00aea936d4c
Author: Andrey Smetanin <asmetanin at virtuozzo.com>
Date:   Fri Oct 2 12:17:37 2015 +0400

    ms/kvm: add hyper-v crash msrs values
    
    Patchset description:
    
    Hyper-V pvpanic equivalent
    
    Windows 2012 guests can notify hypervisor about occurred guest crash
    (Windows bugcheck(BSOD)) by writing specific Hyper-V msrs. This patch does
    handling of this MSR's by KVM and sending notification to user space that
    allows to gather Windows guest crash dump by QEMU/LIBVIRT.
    
    The idea is to provide functionality equal to pvpanic device without
    QEMU guest agent for Windows.
    
    The idea is borrowed from Linux HyperV bus driver and validated against
    Windows 2k12.
    
    Andrey Smetanin (6):
      kvm: add hyper-v crash msrs values
      kvm/x86: move Hyper-V MSR's/hypercall code into hyperv.c file
      kvm: introduce vcpu_debug = kvm_debug + vcpu context
      kvm/x86: Move Hyper-V specific fields into new per vm/vcpu Hyper-V
        structures
      kvm/x86: added hyper-v crash msrs into kvm hyperv context
      kvm/x86: add sending hyper-v crash notification to user space
    
    Anup Patel (1):
      KVM: Add KVM_EXIT_SYSTEM_EVENT to user space API header
    
    ============================
    This patch description:
    
    Added Hyper-V crash msrs values - HV_X64_MSR_CRASH*.
    
    ms commit - a88464a8b0ffb2f8dfb69d3ab982169578b50f22
    
    Signed-off-by: Andrey Smetanin <asmetanin at virtuozzo.com>
    
    Signed-off-by: Denis V. Lunev <den at openvz.org>
    Reviewed-by: Peter Hornyack <peterhornyack at google.com>
    CC: Paolo Bonzini <pbonzini at redhat.com>
    CC: Gleb Natapov <gleb at kernel.org>
    Signed-off-by: Paolo Bonzini <pbonzini at redhat.com>
---
 arch/x86/include/uapi/asm/hyperv.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/x86/include/uapi/asm/hyperv.h b/arch/x86/include/uapi/asm/hyperv.h
index 462efe7..1808792 100644
--- a/arch/x86/include/uapi/asm/hyperv.h
+++ b/arch/x86/include/uapi/asm/hyperv.h
@@ -187,6 +187,16 @@
 #define HV_X64_MSR_SINT14			0x4000009E
 #define HV_X64_MSR_SINT15			0x4000009F
 
+/* Hyper-V guest crash notification MSR's */
+#define HV_X64_MSR_CRASH_P0			0x40000100
+#define HV_X64_MSR_CRASH_P1			0x40000101
+#define HV_X64_MSR_CRASH_P2			0x40000102
+#define HV_X64_MSR_CRASH_P3			0x40000103
+#define HV_X64_MSR_CRASH_P4			0x40000104
+#define HV_X64_MSR_CRASH_CTL			0x40000105
+#define HV_X64_MSR_CRASH_CTL_NOTIFY		(1ULL << 63)
+#define HV_X64_MSR_CRASH_PARAMS		\
+		(1 + (HV_X64_MSR_CRASH_P4 - HV_X64_MSR_CRASH_P0))
 
 #define HV_X64_MSR_HYPERCALL_ENABLE		0x00000001
 #define HV_X64_MSR_HYPERCALL_PAGE_ADDRESS_SHIFT	12