Re: [PATCH v9 17/22] KVM: x86: Advertise support for FRED

From: Xin Li

Date: Tue Jan 20 2026 - 01:57:20 EST




> On Nov 11, 2025, at 11:30 PM, Chao Gao <chao.gao@xxxxxxxxx> wrote:
>
> I'm not sure if AMD CPUs support FRED, but just in case, we can clear FRED
> i.e., kvm_cpu_cap_clear(X86_FEATURE_FRED) in svm_set_cpu_caps().

AMD will support FRED, with ISA level compatibility:

https://www.amd.com/en/blogs/2025/amd-and-intel-celebrate-first-anniversary-of-x86-ecosys.html

Thus we don’t need to clear the bit.