Messages in this thread | | | From | Andy Lutomirski <> | Date | Fri, 11 Dec 2015 14:38:13 -0800 | Subject | Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks |
| |
On Fri, Dec 11, 2015 at 2:35 PM, Luck, Tony <tony.luck@intel.com> wrote: >> Also, are there really PCOMMIT-capable CPUs that still forcibly >> broadcast MCE? If, so, that's unfortunate. > > PCOMMIT and LMCE arrive together ... though BIOS is in the decision > path to enable LMCE, so it is possible that some systems could still > broadcast if the BIOS writer decides to not allow local.
I really wish Intel would stop doing that.
> > But a machine check safe copy_from_user() would be useful > current generation cpus that broadcast all the time.
Fair enough.
--Andy
| |