Re: [PATCH v13 08/19] xen/pvh/mmu: Use PV TLB instead of native.

2014-01-06 Thread Konrad Rzeszutek Wilk
On Mon, Jan 06, 2014 at 11:33:00AM +, Stefano Stabellini wrote: > On Sun, 5 Jan 2014, Konrad Rzeszutek Wilk wrote: > > On Sun, Jan 05, 2014 at 06:11:39PM +, Stefano Stabellini wrote: > > > On Fri, 3 Jan 2014, Konrad Rzeszutek Wilk wrote: > > > > From: Mukesh Rathor > > > > > > > > We also

Re: [PATCH v13 08/19] xen/pvh/mmu: Use PV TLB instead of native.

2014-01-06 Thread Stefano Stabellini
On Sun, 5 Jan 2014, Konrad Rzeszutek Wilk wrote: > On Sun, Jan 05, 2014 at 06:11:39PM +, Stefano Stabellini wrote: > > On Fri, 3 Jan 2014, Konrad Rzeszutek Wilk wrote: > > > From: Mukesh Rathor > > > > > > We also optimize one - the TLB flush. The native operation would > > > needlessly IPI o

Re: [PATCH v13 08/19] xen/pvh/mmu: Use PV TLB instead of native.

2014-01-05 Thread Konrad Rzeszutek Wilk
On Sun, Jan 05, 2014 at 06:11:39PM +, Stefano Stabellini wrote: > On Fri, 3 Jan 2014, Konrad Rzeszutek Wilk wrote: > > From: Mukesh Rathor > > > > We also optimize one - the TLB flush. The native operation would > > needlessly IPI offline VCPUs causing extra wakeups. Using the > > Xen one avo

Re: [PATCH v13 08/19] xen/pvh/mmu: Use PV TLB instead of native.

2014-01-05 Thread Stefano Stabellini
On Fri, 3 Jan 2014, Konrad Rzeszutek Wilk wrote: > From: Mukesh Rathor > > We also optimize one - the TLB flush. The native operation would > needlessly IPI offline VCPUs causing extra wakeups. Using the > Xen one avoids that and lets the hypervisor determine which > VCPU needs the TLB flush. >