Re: [PATCH] target/i386: Export RFDS bit to guests

[Pawan Gupta]

On Wed, Mar 20, 2024 at 08:23:39AM +0800, Xiaoyao Li wrote:
> On 3/19/2024 11:08 PM, Pawan Gupta wrote:
> > 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
> 
> I see. It was not sent to kvm maillist and not merged through KVM tree.
> 
> With KVM part in palce,
> 
> Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>

Thanks.