[Xen-devel] [PATCH 6] X86/MCE: update vMCE injection for AMD

["Liu, Jinsong" <jinsong.liu@xxxxxxxxx>]

X86/MCE: update vMCE injection for AMD

For Intel MCE, it broadcasts vMCE to all vcpus. For AMD MCE, it injects
vMCE only to vcpu0. This patch update inject_vmce for AMD.

Signed-off-by: Liu, Jinsong <jinsong.liu@xxxxxxxxx>
Suggested_by: Christoph Egger <Christoph.Egger@xxxxxxx>

diff -r a6d12a1bc758 xen/arch/x86/cpu/mcheck/mce.h
--- a/xen/arch/x86/cpu/mcheck/mce.h     Thu Sep 20 00:03:25 2012 +0800
+++ b/xen/arch/x86/cpu/mcheck/mce.h     Tue Sep 25 19:52:20 2012 +0800
@@ -168,7 +168,7 @@
 
 int fill_vmsr_data(struct mcinfo_bank *mc_bank, struct domain *d,
     uint64_t gstatus);
-int inject_vmce(struct domain *d);
+int inject_vmce(struct domain *d, bool_t vmce_broadcast);
 
 static inline int mce_vendor_bank_msr(const struct vcpu *v, uint32_t msr)
 {
diff -r a6d12a1bc758 xen/arch/x86/cpu/mcheck/mce_intel.c
--- a/xen/arch/x86/cpu/mcheck/mce_intel.c       Thu Sep 20 00:03:25 2012 +0800
+++ b/xen/arch/x86/cpu/mcheck/mce_intel.c       Tue Sep 25 19:52:20 2012 +0800
@@ -365,7 +365,7 @@
                 }
 
                 /* We will inject vMCE to DOMU*/
-                if ( inject_vmce(d) < 0 )
+                if ( inject_vmce(d, 1) < 0 )
                 {
                     mce_printk(MCE_QUIET, "inject vMCE to DOM%d"
                       " failed\n", d->domain_id);
diff -r a6d12a1bc758 xen/arch/x86/cpu/mcheck/vmce.c
--- a/xen/arch/x86/cpu/mcheck/vmce.c    Thu Sep 20 00:03:25 2012 +0800
+++ b/xen/arch/x86/cpu/mcheck/vmce.c    Tue Sep 25 19:52:20 2012 +0800
@@ -344,11 +344,14 @@
 HVM_REGISTER_SAVE_RESTORE(VMCE_VCPU, vmce_save_vcpu_ctxt,
                           vmce_load_vcpu_ctxt, 1, HVMSR_PER_VCPU);
 
-int inject_vmce(struct domain *d)
+/* 
+ * for Intel MCE, broadcast vMCE to all vcpus
+ * for AMD MCE, only inject vMCE to vcpu0
+ */
+int inject_vmce(struct domain *d, bool_t vmce_broadcast)
 {
     struct vcpu *v;
 
-    /* inject vMCE to all vcpus */
     for_each_vcpu(d, v)
     {
         if ( !test_and_set_bool(v->mce_pending) &&
@@ -365,6 +368,9 @@
                        d->domain_id, v->vcpu_id);
             return -1;
         }
+
+        if ( !vmce_broadcast )
+            break;
     }
 
     return 0;

Attachment: 6_vmce_inject_for_AMD.patch
Description: 6_vmce_inject_for_AMD.patch

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