Re: [RFC PATCH] KVM: x86: Protect the unused bits in MSR exiting flags

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On 7/14/22 18:13, Aaron Lewis wrote:
---

Posting as an RFC to get feedback whether it's too late to protect the
unused flag bits.  My hope is this feature is still new enough, and not
widely used enough, and this change is reasonable enough to be able to be
corrected.  These bits should have been protected from the start, but
unfortunately they were not.

Another option would be to correct this by adding a quirk, but fixing
it that has its down sides.   It complicates the code more than it
would otherwise be, and complicates the usage for anyone using any new
features introduce in the future because they would also have to enable
a quirk.  For long term simplicity my hope is to be able to just patch
the original change.

Yes, let's do it this way.

Paolo




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