Messages in this thread | | | Date | Thu, 9 Nov 2017 11:51:08 +0100 (CET) | From | Thomas Gleixner <> | Subject | Re: [PATCH 02/30] x86, tlb: make CR4-based TLB flushes more robust |
| |
On Thu, 9 Nov 2017, Borislav Petkov wrote: > On Wed, Nov 08, 2017 at 11:46:49AM -0800, Dave Hansen wrote: > > + /* Put original CR4 value back: */ > > native_write_cr4(cr4); > > } > > Btw, Andy, we read the CR4 shadow in that function but we don't update > it. Why?
Because its the same as before.
> > + /* Put original CR4 value back: */ > > native_write_cr4(cr4);
Thanks,
tglx
| |