Re: [PATCH v2 08/15] KVM: x86: Add mode-aware versions of kvm_<reg>_{read,write}() helpers

[Binbin Wu]

On 5/15/2026 5:53 AM, Sean Christopherson wrote:
> Make kvm_<reg>_{read,write}() mode-aware (where the value is truncated to
> 32 bits if the vCPU isn't in 64-bit mode), and convert all the intentional
> "raw" accesses to kvm_<reg>_{read,write}_raw() versions.  To avoid
> confusion and bikeshedding over whether or not explicit 32-bit accesses
> should use the "raw" or mode-aware variants, add and use "e" versions, e.g.
> for things like RDMSR, WRMSR, and CPUID, where the instruction uses only
> only bits 31:0, regardless of mode.
   ^
  double "only"

> 
> No functional change intended (all use of "e" versions is for cases where
> the value is already truncated due to bouncing through a u32).
> 
> Cc: Binbin Wu <binbin.wu@xxxxxxxxxxxxxxx>
> Cc: Kai Huang <kai.huang@xxxxxxxxx>
> Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
Reviewed-by: Binbin Wu <binbin.wu@xxxxxxxxxxxxxxx>