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Re: [RFC PATCH v1 10/15] KVM: VMX: Use WRMSRNS or its immediate form when available
- To: Jim Mattson <jmattson@xxxxxxxxxx>, Sean Christopherson <seanjc@xxxxxxxxxx>
- From: Xin Li <xin@xxxxxxxxx>
- Date: Fri, 11 Apr 2025 21:32:32 -0700
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- Delivery-date: Sat, 12 Apr 2025 04:33:18 +0000
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 4/11/2025 2:12 PM, Jim Mattson wrote:
Surely, any CPU that has WRMSRNS also supports "Virtualize
IA32_SPEC_CTRL," right? Shouldn't we be using that feature rather than
swapping host and guest values with some form of WRMSR?
Good question, the simple answer is that they are irrelevant.
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