Re: [PATCH] KVM: handle exit due to INVD in VMX

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On 31.10.2010, at 11:22, Gleb Natapov wrote:

> On Sun, Oct 31, 2010 at 11:00:08AM -0700, Alexander Graf wrote:
>> 
>> On 31.10.2010, at 07:36, Gleb Natapov wrote:
>> 
>>> Call into emulator when INVD instruction is executed by a guest.
>> 
>> Why? This is a poor patch description.
> Why what? Why we need to handle INVD exit instead of stopping with
> unhandled exit error?

Ah, so we get the exit already, but don't handle it? That's an important piece of information that belongs in the patch description. Another thing I as a reader would also like to know is where this got triggered, so which guests would break without the patch.

I'm also wondering why nobody has seen it before. Is this a regression? Is this exit a side-effect of another feature bit of VMX, so only newer CPUs are affected?


Alex

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