Am 20/03/2023 um 17:52 schrieb Jim Mattson: > On Wed, Feb 1, 2023 at 5:29 AM Emanuele Giuseppe Esposito > <eesposit@xxxxxxxxxx> wrote: >> >> As the title suggest, if the host cpu supports flush_l1d flag and >> QEMU/userspace wants to boot a VM with the same flag (or emulate same >> host features), KVM should be able to do so. >> >> Patch 3 is the main fix, because if flush_l1d is not advertised by >> KVM, a linux VM will erroneously mark >> /sys/devices/system/cpu/vulnerabilities/mmio_stale_data >> as vulnerable, even though it isn't since the host has the feature >> and takes care of this. Not sure what would happen in the nested case though. >> >> Patch 1 and 2 are just taken and refactored from Jim Mattison's serie that it >> seems was lost a while ago: >> https://patchwork.kernel.org/project/kvm/patch/20180814173049.21756-1-jmattson@xxxxxxxxxx/ >> >> I thought it was worth re-posting them. > > What has changed since the patches were originally posted, and Konrad > dissed them? > >From the upstream conversation, I honestly didn't really catch that Konrad dissed them. Or at least, I didn't read a valid reason for doing so, contrary to what Sean instead provided. I thought it was just forgotten. My bad, next time I will be more careful when trying to resume old patches :) Thank you, Emanuele
