subject:"\[Xen\-devel\] \[PATCH v4 2\/7\] x86\/xpti\: don't flush TLB twice when switching to 64\-bit pv context"

Re: [Xen-devel] [PATCH v4 2/7] x86/xpti: don't flush TLB twice when switching to 64-bit pv context

2018-03-28 Thread Jan Beulich

>>> On 27.03.18 at 11:06, wrote: > When switching to a 64-bit pv context the TLB is flushed twice today: > the first time when switching to the new address space in > write_ptbase(), the second time when switching to guest mode in > restore_to_guest. > > Avoid the first TLB

[Xen-devel] [PATCH v4 2/7] x86/xpti: don't flush TLB twice when switching to 64-bit pv context

2018-03-27 Thread Juergen Gross

When switching to a 64-bit pv context the TLB is flushed twice today: the first time when switching to the new address space in write_ptbase(), the second time when switching to guest mode in restore_to_guest. Avoid the first TLB flush in that case. Signed-off-by: Juergen Gross