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

[Christoph Egger <Christoph.Egger@xxxxxxx>]

On 09/25/12 07:00, Liu, Jinsong wrote:

> 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>


Acked-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;



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