Re: [PATCH v7 07/10] KVM: nVMX: Add a helper to encode VMCS info in MSR_IA32_VMX_BASIC

From: Huang, Kai
Date: Mon May 20 2024 - 19:16:56 EST




On 21/05/2024 5:59 am, Sean Christopherson wrote:
Add a helper to encode the VMCS revision, size, and supported memory types
in MSR_IA32_VMX_BASIC, i.e. when synthesizing KVM's supported BASIC MSR
value, and delete the now unused VMCS size and memtype shift macros.

For a variety of reasons, KVM has shifted (pun intended) to using helpers
to *get* information from the VMX MSRs, as opposed to defined MASK and
SHIFT macros for direct use. Provide a similar helper for the nested VMX
code, which needs to *set* information, so that KVM isn't left with a mix
of SHIFT macros and dedicated helpers.

Reported-by: Xiaoyao Li <xiaoyao.li@xxxxxxxxx>
Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
---

Reviewed-by: Kai Huang <kai.huang@xxxxxxxxx>