On Tue, Mar 19, 2024 at 12:22:08PM +0800, Xiaoyao Li wrote: > On 3/13/2024 10:53 PM, Pawan Gupta wrote: > > Register File Data Sampling (RFDS) is a CPU side-channel vulnerability > > that may expose stale register value. CPUs that set RFDS_NO bit in MSR > > IA32_ARCH_CAPABILITIES indicate that they are not vulnerable to RFDS. > > Similarly, RFDS_CLEAR indicates that CPU is affected by RFDS, and has > > the microcode to help mitigate RFDS. > > > > Make RFDS_CLEAR and RFDS_NO bits available to guests. > > What's the status of KVM part?
KVM part is already upstreamed and backported: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.8.1&id=50d33b98b1e23d1cd8743b3cac7a0ae5718b8b00
