https://bugzilla.kernel.org/show_bug.cgi?id=203543 --- Comment #8 from Liran Alon (liran.alon@xxxxxxxxxx) --- +Paolo What are your thoughts on this? What is the reason that KVM relies on CPU_BASED_RDPMC_EXITING to be exposed from underlying CPU? How is it critical for it’s functionality? If it’s because we want to make sure that we hide host PMCs, we should condition this to be a min requirement of kvm_intel only in case underlying CPU exposes PMU to begin with. Do you agree? If yes, I can create the patch to fix this. -Liran > On 8 May 2019, at 16:51, bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > > > https://urldefense.proofpoint.com/v2/url?u=https-3A__bugzilla.kernel.org_show-5Fbug.cgi-3Fid-3D203543&d=DwIDaQ&c=RoP1YumCXCgaWHvlZYR8PZh8Bv7qIrMUB65eapI_JnE&r=Jk6Q8nNzkQ6LJ6g42qARkg6ryIDGQr-yKXPNGZbpTx0&m=7TirfLMNxYI-3Ygxm3kjDUB49Jwmk8bqD7671wy0hi8&s=Z_L1UqH19zon0ohDrCMU91ixA-Wn_vO7d-fO8s2G3PI&e= > > --- Comment #5 from David Hill (hilld@xxxxxxxxxxxxxxx) --- > I can confirm that reverting that commit solves the problem: > > e51bfdb68725 ("KVM: nVMX: Expose RDPMC-exiting only when guest supports PMU”) > > -- > You are receiving this mail because: > You are watching the assignee of the bug. -- You are receiving this mail because: You are watching the assignee of the bug.
