On 28/01/2019 10:51, Jan Beulich wrote: > The increased number of messages (spec_ctrl.c:print_details()) within a > certain time window made me notice some slowness of boot time screen > output. Experimentally I've narrowed the time window to be from > immediately after the early ucode update on the BSP to the PAT write in > cpu_init(), which upon further investigation has an effect because of > the full TLB flush that's implied by that write. > > For that reason, as a workaround, flush the TLB of the mapping of the > page that holds the blob. Note that flushing just a single page is > sufficient: As per verify_patch_size() patch size can't exceed 4k, and > the way xmalloc() works the blob can't be crossing a page boundary. > > Signed-off-by: Jan Beulich <jbeul...@suse.com>
Release-acked-by: Juergen Gross <jgr...@suse.com> Juergen _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
