linux-kernel - Re: patch kvm-add-vt-x-machine-check-support.patch added to 2.6.30-stable tree

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Message-ID: <4A4B67A2.9090300@redhat.com>
Date:	Wed, 01 Jul 2009 16:41:54 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Andi Kleen <andi@...stfloor.org>
CC:	Andi Kleen <ak@...ux.intel.com>, Greg KH <gregkh@...e.de>,
	Stefan Lippers-Hollmann <s.L-H@....de>,
	linux-kernel@...r.kernel.org, ying.huang@...el.com,
	stable@...nel.org
Subject: Re: patch kvm-add-vt-x-machine-check-support.patch added to	2.6.30-stable
 tree

On 07/01/2009 04:24 PM, Andi Kleen wrote:
>
> KVM: Add VT-x machine check support v3
>
> VT-x needs an explicit MC vector intercept to handle machine checks in the
> hypervisor.
>
> It also has a special option to catch machine checks that happen
> during VT entry.
>
> Do these interceptions and forward them to the Linux machine check
> handler. Make it always look like user space is interrupted because
> the machine check handler treats kernel/user space differently.
>
> Thanks to Huang Ying and Jiang Yunhong for help and testing.
>
> Cc: ying.huang@...el.com
>
> v2: Handle machine checks still in interrupt off context
> to avoid problems on preemptible kernels.
> v3: Handle old style 32bit and make fully standalone
>
>
> ===================================================================
> --- linux-2.6.30-ak.orig/arch/x86/include/asm/kvm_host.h
> +++ linux-2.6.30-ak/arch/x86/include/asm/kvm_host.h
> @@ -371,6 +371,8 @@ struct kvm_vcpu_arch {
>   	unsigned long dr6;
>   	unsigned long dr7;
>   	unsigned long eff_db[KVM_NR_DB_REGS];
> +
> +	u32 exit_reason;
>   };
>
>    

Should be in struct vmx_vcpu; otherwise ack.

-- 
error compiling committee.c: too many arguments to function

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