On Thu, Jun 5, 2025 at 12:15 PM Tom Lendacky <thomas.lendacky@xxxxxxx> wrote: > > On 6/5/25 10:02, Dionna Glaze wrote: > > The ccp driver can be overloaded even with guest request rate limits. > > The return value of -EBUSY means that there is no firmware error to > > report back to user space, so the guest VM would see this as > > exitinfo2 = 0. The false success can trick the guest to update its > > message sequence number when it shouldn't have. > > -EBUSY from the CCP driver is an error, not a throttling condition. Either Ah, okay thanks Tom. I'll drop it for v6. I'll see how the first patch is received before cutting a new email. -- -Dionna Glaze, PhD, CISSP, CCSP (she/her)
