KVM: SVM: Add new intercept word in vmcb_control_area

The new intercept bits have been added in vmcb control area to support
few more interceptions. Here are the some of them.
 - INTERCEPT_INVLPGB,
 - INTERCEPT_INVLPGB_ILLEGAL,
 - INTERCEPT_INVPCID,
 - INTERCEPT_MCOMMIT,
 - INTERCEPT_TLBSYNC,

Add a new intercept word in vmcb_control_area to support these instructions.
Also update kvm_nested_vmrun trace function to support the new addition.

AMD documentation for these instructions is available at "AMD64
Architecture Programmer’s Manual Volume 2: System Programming, Pub. 24593
Rev. 3.34(or later)"

The documentation can be obtained at the links below:
Link: https://www.amd.com/system/files/TechDocs/24593.pdf
Link: https://bugzilla.kernel.org/show_bug.cgi?id=206537
Signed-off-by: Babu Moger <babu.moger@amd.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Message-Id: <159985251547.11252.16994139329949066945.stgit@bmoger-ubuntu>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/include/asm/svm.h b/arch/x86/include/asm/svm.h
index c2ae1df..71d630b 100644 (file)
--- a/arch/x86/include/asm/svm.h
+++ b/arch/x86/include/asm/svm.h
@@ -16,6 +16,7 @@ enum intercept_words {
        INTERCEPT_EXCEPTION,
        INTERCEPT_WORD3,
        INTERCEPT_WORD4,
+       INTERCEPT_WORD5,
        MAX_INTERCEPT,
 };
 
@@ -97,6 +98,12 @@ enum {
        INTERCEPT_MWAIT_COND,
        INTERCEPT_XSETBV,
        INTERCEPT_RDPRU,
+       /* Byte offset 014h (word 5) */
+       INTERCEPT_INVLPGB = 160,
+       INTERCEPT_INVLPGB_ILLEGAL,
+       INTERCEPT_INVPCID,
+       INTERCEPT_MCOMMIT,
+       INTERCEPT_TLBSYNC,
 };
 
 

diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
index cc0985c..cf6e74b 100644 (file)
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -485,7 +485,8 @@ int nested_svm_vmrun(struct vcpu_svm *svm)
                                    vmcb12->control.intercepts[INTERCEPT_CR] >> 16,
                                    vmcb12->control.intercepts[INTERCEPT_EXCEPTION],
                                    vmcb12->control.intercepts[INTERCEPT_WORD3],
-                                   vmcb12->control.intercepts[INTERCEPT_WORD4]);
+                                   vmcb12->control.intercepts[INTERCEPT_WORD4],
+                                   vmcb12->control.intercepts[INTERCEPT_WORD5]);
 
        /* Clear internal status */
        kvm_clear_exception_queue(&svm->vcpu);

diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
index b250c6a..11cb4c0 100644 (file)
--- a/arch/x86/kvm/trace.h
+++ b/arch/x86/kvm/trace.h
@@ -544,9 +544,10 @@ TRACE_EVENT(kvm_nested_vmrun,
 );
 
 TRACE_EVENT(kvm_nested_intercepts,
-           TP_PROTO(__u16 cr_read, __u16 cr_write, __u32 exceptions, __u32 intercept1,
-                    __u32 intercept2),
-           TP_ARGS(cr_read, cr_write, exceptions, intercept1, intercept2),
+           TP_PROTO(__u16 cr_read, __u16 cr_write, __u32 exceptions,
+                    __u32 intercept1, __u32 intercept2, __u32 intercept3),
+           TP_ARGS(cr_read, cr_write, exceptions, intercept1,
+                   intercept2, intercept3),
 
        TP_STRUCT__entry(
                __field(        __u16,          cr_read         )
@@ -554,6 +555,7 @@ TRACE_EVENT(kvm_nested_intercepts,
                __field(        __u32,          exceptions      )
                __field(        __u32,          intercept1      )
                __field(        __u32,          intercept2      )
+               __field(        __u32,          intercept3      )
        ),
 
        TP_fast_assign(
@@ -562,12 +564,13 @@ TRACE_EVENT(kvm_nested_intercepts,
                __entry->exceptions     = exceptions;
                __entry->intercept1     = intercept1;
                __entry->intercept2     = intercept2;
+               __entry->intercept3     = intercept3;
        ),
 
        TP_printk("cr_read: %04x cr_write: %04x excp: %08x "
-                 "intercepts: %08x %08x",
+                 "intercepts: %08x %08x %08x",
                  __entry->cr_read, __entry->cr_write, __entry->exceptions,
-                 __entry->intercept1, __entry->intercept2)
+                 __entry->intercept1, __entry->intercept2, __entry->intercept3)
 );
 /*
  * Tracepoint for #VMEXIT while nested