>>> On 06.06.17 at 10:13, <yi.y....@linux.intel.com> wrote: > On 17-06-06 01:45:11, Jan Beulich wrote: >> >>> On 02.06.17 at 09:26, <yi.y....@linux.intel.com> wrote: >> > On 17-05-31 03:37:48, Jan Beulich wrote: >> >> >>> On 03.05.17 at 10:44, <yi.y....@linux.intel.com> wrote: >> >> > + /* Cut half of cos_max when CDP is enabled. */ >> >> > + feat->cos_max >>= 1; >> >> > + >> >> > + /* We only write mask1 since mask0 is always all ones by >> >> > default. */ >> >> >> >> Is this, btw, just reset state or even guaranteed after offlining >> >> and re-onlining a CPU? >> >> >> > Below MSRs are all per socket. So, we just need reset them when socket is >> > online. >> >> Which I hope you've understood then means the comment and >> presumably also the code here need further refinement. >> > Spec states it below. So, the mask0 is guranteed. > "the default mask in IA32_L3_MASK_0 - which is all “1”s (on reset)"
Sigh. I did ask very clearly (and this is still visible above) about the case where the CPU did _not_ undergo a reset cycle. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
